956e45f6fb
Lots of new unit-tests increase code coverage. Lots of refactoring, cleanup and simlpification to reduce code size. Fixes for Bug 223564 and 245807 Updates to dirdeps.mk and meta2deps.py
2912 lines
80 KiB
C
2912 lines
80 KiB
C
/* $NetBSD: job.c,v 1.302 2020/11/01 18:45:49 rillig Exp $ */
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/*
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* Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Adam de Boor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1988, 1989 by Adam de Boor
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* Copyright (c) 1989 by Berkeley Softworks
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Adam de Boor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*-
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* job.c --
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* handle the creation etc. of our child processes.
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*
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* Interface:
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* Job_Init Called to initialize this module. In addition,
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* any commands attached to the .BEGIN target
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* are executed before this function returns.
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* Hence, the makefiles must have been parsed
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* before this function is called.
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*
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* Job_End Clean up any memory used.
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*
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* Job_Make Start the creation of the given target.
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*
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* Job_CatchChildren
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* Check for and handle the termination of any
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* children. This must be called reasonably
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* frequently to keep the whole make going at
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* a decent clip, since job table entries aren't
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* removed until their process is caught this way.
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*
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* Job_CatchOutput
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* Print any output our children have produced.
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* Should also be called fairly frequently to
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* keep the user informed of what's going on.
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* If no output is waiting, it will block for
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* a time given by the SEL_* constants, below,
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* or until output is ready.
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*
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* Job_ParseShell Given the line following a .SHELL target, parse
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* the line as a shell specification. Returns
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* FALSE if the spec was incorrect.
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*
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* Job_Finish Perform any final processing which needs doing.
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* This includes the execution of any commands
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* which have been/were attached to the .END
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* target. It should only be called when the
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* job table is empty.
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*
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* Job_AbortAll Abort all currently running jobs. It doesn't
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* handle output or do anything for the jobs,
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* just kills them. It should only be called in
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* an emergency.
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*
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* Job_CheckCommands
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* Verify that the commands for a target are
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* ok. Provide them if necessary and possible.
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*
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* Job_Touch Update a target without really updating it.
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*
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* Job_Wait Wait for all currently-running jobs to finish.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/file.h>
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#include <sys/time.h>
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#include "wait.h"
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#include <errno.h>
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#if !defined(USE_SELECT) && defined(HAVE_POLL_H)
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#include <poll.h>
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#else
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#ifndef USE_SELECT /* no poll.h */
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# define USE_SELECT
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#endif
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#if defined(HAVE_SYS_SELECT_H)
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# include <sys/select.h>
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#endif
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#endif
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#include <signal.h>
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#include <utime.h>
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#if defined(HAVE_SYS_SOCKET_H)
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# include <sys/socket.h>
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#endif
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#include "make.h"
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#include "dir.h"
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#include "job.h"
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#include "pathnames.h"
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#include "trace.h"
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/* "@(#)job.c 8.2 (Berkeley) 3/19/94" */
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MAKE_RCSID("$NetBSD: job.c,v 1.302 2020/11/01 18:45:49 rillig Exp $");
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/* A shell defines how the commands are run. All commands for a target are
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* written into a single file, which is then given to the shell to execute
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* the commands from it. The commands are written to the file using a few
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* templates for echo control and error control.
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*
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* The name of the shell is the basename for the predefined shells, such as
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* "sh", "csh", "bash". For custom shells, it is the full pathname, and its
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* basename is used to select the type of shell; the longest match wins.
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* So /usr/pkg/bin/bash has type sh, /usr/local/bin/tcsh has type csh.
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*
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* The echoing of command lines is controlled using hasEchoCtl, echoOff,
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* echoOn, noPrint and noPrintLen. When echoOff is executed by the shell, it
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* still outputs something, but this something is not interesting, therefore
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* it is filtered out using noPrint and noPrintLen.
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*
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* The error checking for individual commands is controlled using hasErrCtl,
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* errOnOrEcho, errOffOrExecIgnore and errExit.
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*
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* If a shell doesn't have error control, errOnOrEcho becomes a printf template
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* for echoing the command, should echoing be on; errOffOrExecIgnore becomes
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* another printf template for executing the command while ignoring the return
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* status. Finally errExit is a printf template for running the command and
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* causing the shell to exit on error. If any of these strings are empty when
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* hasErrCtl is FALSE, the command will be executed anyway as is, and if it
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* causes an error, so be it. Any templates setup to echo the command will
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* escape any '$ ` \ "' characters in the command string to avoid common
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* problems with echo "%s\n" as a template.
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*
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* The command-line flags "echo" and "exit" also control the behavior. The
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* "echo" flag causes the shell to start echoing commands right away. The
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* "exit" flag causes the shell to exit when an error is detected in one of
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* the commands.
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*/
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typedef struct Shell {
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/* The name of the shell. For Bourne and C shells, this is used only to
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* find the shell description when used as the single source of a .SHELL
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* target. For user-defined shells, this is the full path of the shell. */
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const char *name;
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Boolean hasEchoCtl; /* True if both echoOff and echoOn defined */
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const char *echoOff; /* command to turn off echo */
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const char *echoOn; /* command to turn it back on again */
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const char *noPrint; /* text to skip when printing output from
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* shell. This is usually the same as echoOff */
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size_t noPrintLen; /* length of noPrint command */
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Boolean hasErrCtl; /* set if can control error checking for
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* individual commands */
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/* XXX: split into errOn and echoCmd */
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const char *errOnOrEcho; /* template to turn on error checking */
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/* XXX: split into errOff and execIgnore */
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const char *errOffOrExecIgnore; /* template to turn off error checking */
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const char *errExit; /* template to use for testing exit code */
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/* string literal that results in a newline character when it appears
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* outside of any 'quote' or "quote" characters */
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const char *newline;
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char commentChar; /* character used by shell for comment lines */
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/*
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* command-line flags
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*/
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const char *echo; /* echo commands */
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const char *exit; /* exit on error */
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} Shell;
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/*
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* FreeBSD: traditionally .MAKE is not required to
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* pass jobs queue to sub-makes.
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* Use .MAKE.ALWAYS_PASS_JOB_QUEUE=no to disable.
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*/
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#define MAKE_ALWAYS_PASS_JOB_QUEUE ".MAKE.ALWAYS_PASS_JOB_QUEUE"
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static int Always_pass_job_queue = TRUE;
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/*
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* FreeBSD: aborting entire parallel make isn't always
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* desired. When doing tinderbox for example, failure of
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* one architecture should not stop all.
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* We still want to bail on interrupt though.
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*/
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#define MAKE_JOB_ERROR_TOKEN "MAKE_JOB_ERROR_TOKEN"
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static int Job_error_token = TRUE;
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/*
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* error handling variables
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*/
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static int errors = 0; /* number of errors reported */
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typedef enum AbortReason { /* why is the make aborting? */
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ABORT_NONE,
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ABORT_ERROR, /* Because of an error */
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ABORT_INTERRUPT, /* Because it was interrupted */
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ABORT_WAIT /* Waiting for jobs to finish */
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} AbortReason;
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static AbortReason aborting = ABORT_NONE;
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#define JOB_TOKENS "+EI+" /* Token to requeue for each abort state */
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/*
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* this tracks the number of tokens currently "out" to build jobs.
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*/
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int jobTokensRunning = 0;
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/* The number of commands actually printed to the shell commands file for
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* the current job. Should this number be 0, no shell will be executed. */
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static int numCommands;
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typedef enum JobStartResult {
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JOB_RUNNING, /* Job is running */
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JOB_ERROR, /* Error in starting the job */
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JOB_FINISHED /* The job is already finished */
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} JobStartResult;
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/*
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* Descriptions for various shells.
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*
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* The build environment may set DEFSHELL_INDEX to one of
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* DEFSHELL_INDEX_SH, DEFSHELL_INDEX_KSH, or DEFSHELL_INDEX_CSH, to
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* select one of the predefined shells as the default shell.
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*
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* Alternatively, the build environment may set DEFSHELL_CUSTOM to the
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* name or the full path of a sh-compatible shell, which will be used as
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* the default shell.
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*
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* ".SHELL" lines in Makefiles can choose the default shell from the
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* set defined here, or add additional shells.
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*/
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#ifdef DEFSHELL_CUSTOM
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#define DEFSHELL_INDEX_CUSTOM 0
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#define DEFSHELL_INDEX_SH 1
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#define DEFSHELL_INDEX_KSH 2
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#define DEFSHELL_INDEX_CSH 3
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#else /* !DEFSHELL_CUSTOM */
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#define DEFSHELL_INDEX_SH 0
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#define DEFSHELL_INDEX_KSH 1
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#define DEFSHELL_INDEX_CSH 2
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#endif /* !DEFSHELL_CUSTOM */
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#ifndef DEFSHELL_INDEX
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#define DEFSHELL_INDEX 0 /* DEFSHELL_INDEX_CUSTOM or DEFSHELL_INDEX_SH */
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#endif /* !DEFSHELL_INDEX */
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static Shell shells[] = {
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#ifdef DEFSHELL_CUSTOM
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/*
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* An sh-compatible shell with a non-standard name.
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*
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* Keep this in sync with the "sh" description below, but avoid
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* non-portable features that might not be supplied by all
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* sh-compatible shells.
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*/
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{
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DEFSHELL_CUSTOM, /* .name */
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FALSE, /* .hasEchoCtl */
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"", /* .echoOff */
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"", /* .echoOn */
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"", /* .noPrint */
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0, /* .noPrintLen */
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FALSE, /* .hasErrCtl */
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"echo \"%s\"\n", /* .errOnOrEcho */
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"%s\n", /* .errOffOrExecIgnore */
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"{ %s \n} || exit $?\n", /* .errExit */
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"'\n'", /* .newline */
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'#', /* .commentChar */
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"", /* .echo */
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"", /* .exit */
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},
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#endif /* DEFSHELL_CUSTOM */
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/*
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* SH description. Echo control is also possible and, under
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* sun UNIX anyway, one can even control error checking.
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*/
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{
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"sh", /* .name */
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FALSE, /* .hasEchoCtl */
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"", /* .echoOff */
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"", /* .echoOn */
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"", /* .noPrint */
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0, /* .noPrintLen */
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FALSE, /* .hasErrCtl */
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"echo \"%s\"\n", /* .errOnOrEcho */
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"%s\n", /* .errOffOrExecIgnore */
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"{ %s \n} || exit $?\n", /* .errExit */
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"'\n'", /* .newline */
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'#', /* .commentChar*/
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#if defined(MAKE_NATIVE) && defined(__NetBSD__)
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"q", /* .echo */
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#else
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"", /* .echo */
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#endif
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"", /* .exit */
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},
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/*
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* KSH description.
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*/
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{
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"ksh", /* .name */
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TRUE, /* .hasEchoCtl */
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"set +v", /* .echoOff */
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"set -v", /* .echoOn */
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"set +v", /* .noPrint */
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6, /* .noPrintLen */
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FALSE, /* .hasErrCtl */
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"echo \"%s\"\n", /* .errOnOrEcho */
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"%s\n", /* .errOffOrExecIgnore */
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"{ %s \n} || exit $?\n", /* .errExit */
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"'\n'", /* .newline */
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'#', /* .commentChar */
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"v", /* .echo */
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"", /* .exit */
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},
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/*
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* CSH description. The csh can do echo control by playing
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* with the setting of the 'echo' shell variable. Sadly,
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* however, it is unable to do error control nicely.
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*/
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{
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"csh", /* .name */
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TRUE, /* .hasEchoCtl */
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"unset verbose", /* .echoOff */
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"set verbose", /* .echoOn */
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"unset verbose", /* .noPrint */
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13, /* .noPrintLen */
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FALSE, /* .hasErrCtl */
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"echo \"%s\"\n", /* .errOnOrEcho */
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/* XXX: Mismatch between errOn and execIgnore */
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"csh -c \"%s || exit 0\"\n", /* .errOffOrExecIgnore */
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"", /* .errExit */
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"'\\\n'", /* .newline */
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'#', /* .commentChar */
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"v", /* .echo */
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"e", /* .exit */
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}
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};
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/* This is the shell to which we pass all commands in the Makefile.
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* It is set by the Job_ParseShell function. */
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static Shell *commandShell = &shells[DEFSHELL_INDEX];
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const char *shellPath = NULL; /* full pathname of executable image */
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const char *shellName = NULL; /* last component of shellPath */
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char *shellErrFlag = NULL;
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static char *shellArgv = NULL; /* Custom shell args */
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static Job *job_table; /* The structures that describe them */
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static Job *job_table_end; /* job_table + maxJobs */
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static unsigned int wantToken; /* we want a token */
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static int lurking_children = 0;
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static int make_suspended = 0; /* non-zero if we've seen a SIGTSTP (etc) */
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/*
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* Set of descriptors of pipes connected to
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* the output channels of children
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*/
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static struct pollfd *fds = NULL;
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static Job **jobfds = NULL;
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static nfds_t nfds = 0;
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static void watchfd(Job *);
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static void clearfd(Job *);
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static int readyfd(Job *);
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static GNode *lastNode; /* The node for which output was most recently
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* produced. */
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static char *targPrefix = NULL; /* What we print at the start of TARG_FMT */
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static Job tokenWaitJob; /* token wait pseudo-job */
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static Job childExitJob; /* child exit pseudo-job */
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#define CHILD_EXIT "."
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#define DO_JOB_RESUME "R"
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enum { npseudojobs = 2 }; /* number of pseudo-jobs */
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#define TARG_FMT "%s %s ---\n" /* Default format */
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#define MESSAGE(fp, gn) \
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if (opts.maxJobs != 1 && targPrefix && *targPrefix) \
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(void)fprintf(fp, TARG_FMT, targPrefix, gn->name)
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static sigset_t caught_signals; /* Set of signals we handle */
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static void JobDoOutput(Job *, Boolean);
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static void JobInterrupt(int, int) MAKE_ATTR_DEAD;
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static void JobRestartJobs(void);
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static void JobSigReset(void);
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static unsigned
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nfds_per_job(void)
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{
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#if defined(USE_FILEMON) && !defined(USE_FILEMON_DEV)
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if (useMeta)
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return 2;
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#endif
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return 1;
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}
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static void
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job_table_dump(const char *where)
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{
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Job *job;
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debug_printf("job table @ %s\n", where);
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for (job = job_table; job < job_table_end; job++) {
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debug_printf("job %d, status %d, flags %d, pid %d\n",
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(int)(job - job_table), job->job_state, job->flags, job->pid);
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}
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}
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/*
|
|
* Delete the target of a failed, interrupted, or otherwise
|
|
* unsuccessful job unless inhibited by .PRECIOUS.
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|
*/
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|
static void
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JobDeleteTarget(GNode *gn)
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{
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const char *file;
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if (gn->type & OP_JOIN)
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return;
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|
if (gn->type & OP_PHONY)
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return;
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|
if (Targ_Precious(gn))
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return;
|
|
if (opts.noExecute)
|
|
return;
|
|
|
|
file = GNode_Path(gn);
|
|
if (eunlink(file) != -1)
|
|
Error("*** %s removed", file);
|
|
}
|
|
|
|
/*
|
|
* JobSigLock/JobSigUnlock
|
|
*
|
|
* Signal lock routines to get exclusive access. Currently used to
|
|
* protect `jobs' and `stoppedJobs' list manipulations.
|
|
*/
|
|
static void JobSigLock(sigset_t *omaskp)
|
|
{
|
|
if (sigprocmask(SIG_BLOCK, &caught_signals, omaskp) != 0) {
|
|
Punt("JobSigLock: sigprocmask: %s", strerror(errno));
|
|
sigemptyset(omaskp);
|
|
}
|
|
}
|
|
|
|
static void JobSigUnlock(sigset_t *omaskp)
|
|
{
|
|
(void)sigprocmask(SIG_SETMASK, omaskp, NULL);
|
|
}
|
|
|
|
static void
|
|
JobCreatePipe(Job *job, int minfd)
|
|
{
|
|
int i, fd, flags;
|
|
int pipe_fds[2];
|
|
|
|
if (pipe(pipe_fds) == -1)
|
|
Punt("Cannot create pipe: %s", strerror(errno));
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
/* Avoid using low numbered fds */
|
|
fd = fcntl(pipe_fds[i], F_DUPFD, minfd);
|
|
if (fd != -1) {
|
|
close(pipe_fds[i]);
|
|
pipe_fds[i] = fd;
|
|
}
|
|
}
|
|
|
|
job->inPipe = pipe_fds[0];
|
|
job->outPipe = pipe_fds[1];
|
|
|
|
/* Set close-on-exec flag for both */
|
|
if (fcntl(job->inPipe, F_SETFD, FD_CLOEXEC) == -1)
|
|
Punt("Cannot set close-on-exec: %s", strerror(errno));
|
|
if (fcntl(job->outPipe, F_SETFD, FD_CLOEXEC) == -1)
|
|
Punt("Cannot set close-on-exec: %s", strerror(errno));
|
|
|
|
/*
|
|
* We mark the input side of the pipe non-blocking; we poll(2) the
|
|
* pipe when we're waiting for a job token, but we might lose the
|
|
* race for the token when a new one becomes available, so the read
|
|
* from the pipe should not block.
|
|
*/
|
|
flags = fcntl(job->inPipe, F_GETFL, 0);
|
|
if (flags == -1)
|
|
Punt("Cannot get flags: %s", strerror(errno));
|
|
flags |= O_NONBLOCK;
|
|
if (fcntl(job->inPipe, F_SETFL, flags) == -1)
|
|
Punt("Cannot set flags: %s", strerror(errno));
|
|
}
|
|
|
|
/* Pass the signal to each running job. */
|
|
static void
|
|
JobCondPassSig(int signo)
|
|
{
|
|
Job *job;
|
|
|
|
DEBUG1(JOB, "JobCondPassSig(%d) called.\n", signo);
|
|
|
|
for (job = job_table; job < job_table_end; job++) {
|
|
if (job->job_state != JOB_ST_RUNNING)
|
|
continue;
|
|
DEBUG2(JOB, "JobCondPassSig passing signal %d to child %d.\n",
|
|
signo, job->pid);
|
|
KILLPG(job->pid, signo);
|
|
}
|
|
}
|
|
|
|
/* SIGCHLD handler.
|
|
*
|
|
* Sends a token on the child exit pipe to wake us up from select()/poll(). */
|
|
static void
|
|
JobChildSig(int signo MAKE_ATTR_UNUSED)
|
|
{
|
|
while (write(childExitJob.outPipe, CHILD_EXIT, 1) == -1 && errno == EAGAIN)
|
|
continue;
|
|
}
|
|
|
|
|
|
/* Resume all stopped jobs. */
|
|
static void
|
|
JobContinueSig(int signo MAKE_ATTR_UNUSED)
|
|
{
|
|
/*
|
|
* Defer sending SIGCONT to our stopped children until we return
|
|
* from the signal handler.
|
|
*/
|
|
while (write(childExitJob.outPipe, DO_JOB_RESUME, 1) == -1 &&
|
|
errno == EAGAIN)
|
|
continue;
|
|
}
|
|
|
|
/* Pass a signal on to all jobs, then resend to ourselves.
|
|
* We die by the same signal. */
|
|
MAKE_ATTR_DEAD static void
|
|
JobPassSig_int(int signo)
|
|
{
|
|
/* Run .INTERRUPT target then exit */
|
|
JobInterrupt(TRUE, signo);
|
|
}
|
|
|
|
/* Pass a signal on to all jobs, then resend to ourselves.
|
|
* We die by the same signal. */
|
|
MAKE_ATTR_DEAD static void
|
|
JobPassSig_term(int signo)
|
|
{
|
|
/* Dont run .INTERRUPT target then exit */
|
|
JobInterrupt(FALSE, signo);
|
|
}
|
|
|
|
static void
|
|
JobPassSig_suspend(int signo)
|
|
{
|
|
sigset_t nmask, omask;
|
|
struct sigaction act;
|
|
|
|
/* Suppress job started/continued messages */
|
|
make_suspended = 1;
|
|
|
|
/* Pass the signal onto every job */
|
|
JobCondPassSig(signo);
|
|
|
|
/*
|
|
* Send ourselves the signal now we've given the message to everyone else.
|
|
* Note we block everything else possible while we're getting the signal.
|
|
* This ensures that all our jobs get continued when we wake up before
|
|
* we take any other signal.
|
|
*/
|
|
sigfillset(&nmask);
|
|
sigdelset(&nmask, signo);
|
|
(void)sigprocmask(SIG_SETMASK, &nmask, &omask);
|
|
|
|
act.sa_handler = SIG_DFL;
|
|
sigemptyset(&act.sa_mask);
|
|
act.sa_flags = 0;
|
|
(void)sigaction(signo, &act, NULL);
|
|
|
|
if (DEBUG(JOB))
|
|
debug_printf("JobPassSig passing signal %d to self.\n", signo);
|
|
|
|
(void)kill(getpid(), signo);
|
|
|
|
/*
|
|
* We've been continued.
|
|
*
|
|
* A whole host of signals continue to happen!
|
|
* SIGCHLD for any processes that actually suspended themselves.
|
|
* SIGCHLD for any processes that exited while we were alseep.
|
|
* The SIGCONT that actually caused us to wakeup.
|
|
*
|
|
* Since we defer passing the SIGCONT on to our children until
|
|
* the main processing loop, we can be sure that all the SIGCHLD
|
|
* events will have happened by then - and that the waitpid() will
|
|
* collect the child 'suspended' events.
|
|
* For correct sequencing we just need to ensure we process the
|
|
* waitpid() before passing on the SIGCONT.
|
|
*
|
|
* In any case nothing else is needed here.
|
|
*/
|
|
|
|
/* Restore handler and signal mask */
|
|
act.sa_handler = JobPassSig_suspend;
|
|
(void)sigaction(signo, &act, NULL);
|
|
(void)sigprocmask(SIG_SETMASK, &omask, NULL);
|
|
}
|
|
|
|
static Job *
|
|
JobFindPid(int pid, JobState status, Boolean isJobs)
|
|
{
|
|
Job *job;
|
|
|
|
for (job = job_table; job < job_table_end; job++) {
|
|
if ((job->job_state == status) && job->pid == pid)
|
|
return job;
|
|
}
|
|
if (DEBUG(JOB) && isJobs)
|
|
job_table_dump("no pid");
|
|
return NULL;
|
|
}
|
|
|
|
/* Parse leading '@', '-' and '+', which control the exact execution mode. */
|
|
static void
|
|
ParseRunOptions(
|
|
char **pp,
|
|
Boolean *out_shutUp, Boolean *out_errOff, Boolean *out_runAlways)
|
|
{
|
|
char *p = *pp;
|
|
*out_shutUp = FALSE;
|
|
*out_errOff = FALSE;
|
|
*out_runAlways = FALSE;
|
|
|
|
for (;;) {
|
|
if (*p == '@')
|
|
*out_shutUp = !DEBUG(LOUD);
|
|
else if (*p == '-')
|
|
*out_errOff = TRUE;
|
|
else if (*p == '+')
|
|
*out_runAlways = TRUE;
|
|
else
|
|
break;
|
|
p++;
|
|
}
|
|
|
|
pp_skip_whitespace(&p);
|
|
|
|
*pp = p;
|
|
}
|
|
|
|
/* Escape a string for a double-quoted string literal in sh, csh and ksh. */
|
|
static char *
|
|
EscapeShellDblQuot(const char *cmd)
|
|
{
|
|
size_t i, j;
|
|
|
|
/* Worst that could happen is every char needs escaping. */
|
|
char *esc = bmake_malloc(strlen(cmd) * 2 + 1);
|
|
for (i = 0, j = 0; cmd[i] != '\0'; i++, j++) {
|
|
if (cmd[i] == '$' || cmd[i] == '`' || cmd[i] == '\\' || cmd[i] == '"')
|
|
esc[j++] = '\\';
|
|
esc[j] = cmd[i];
|
|
}
|
|
esc[j] = '\0';
|
|
|
|
return esc;
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* JobPrintCommand --
|
|
* Put out another command for the given job. If the command starts
|
|
* with an @ or a - we process it specially. In the former case,
|
|
* so long as the -s and -n flags weren't given to make, we stick
|
|
* a shell-specific echoOff command in the script. In the latter,
|
|
* we ignore errors for the entire job, unless the shell has error
|
|
* control.
|
|
* If the command is just "..." we take all future commands for this
|
|
* job to be commands to be executed once the entire graph has been
|
|
* made and return non-zero to signal that the end of the commands
|
|
* was reached. These commands are later attached to the postCommands
|
|
* node and executed by Job_End when all things are done.
|
|
*
|
|
* Side Effects:
|
|
* If the command begins with a '-' and the shell has no error control,
|
|
* the JOB_IGNERR flag is set in the job descriptor.
|
|
* numCommands is incremented if the command is actually printed.
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
JobPrintCommand(Job *job, char *cmd)
|
|
{
|
|
const char *const cmdp = cmd;
|
|
Boolean noSpecials; /* true if we shouldn't worry about
|
|
* inserting special commands into
|
|
* the input stream. */
|
|
Boolean shutUp; /* true if we put a no echo command
|
|
* into the command file */
|
|
Boolean errOff; /* true if we turned error checking
|
|
* off before printing the command
|
|
* and need to turn it back on */
|
|
Boolean runAlways;
|
|
const char *cmdTemplate; /* Template to use when printing the
|
|
* command */
|
|
char *cmdStart; /* Start of expanded command */
|
|
char *escCmd = NULL; /* Command with quotes/backticks escaped */
|
|
|
|
noSpecials = !GNode_ShouldExecute(job->node);
|
|
|
|
#define DBPRINTF(fmt, arg) if (DEBUG(JOB)) { \
|
|
debug_printf(fmt, arg); \
|
|
} \
|
|
(void)fprintf(job->cmdFILE, fmt, arg); \
|
|
(void)fflush(job->cmdFILE);
|
|
|
|
numCommands++;
|
|
|
|
Var_Subst(cmd, job->node, VARE_WANTRES, &cmd);
|
|
/* TODO: handle errors */
|
|
cmdStart = cmd;
|
|
|
|
cmdTemplate = "%s\n";
|
|
|
|
ParseRunOptions(&cmd, &shutUp, &errOff, &runAlways);
|
|
|
|
if (runAlways && noSpecials) {
|
|
/*
|
|
* We're not actually executing anything...
|
|
* but this one needs to be - use compat mode just for it.
|
|
*/
|
|
Compat_RunCommand(cmdp, job->node);
|
|
free(cmdStart);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* If the shell doesn't have error control the alternate echo'ing will
|
|
* be done (to avoid showing additional error checking code)
|
|
* and this will need the characters '$ ` \ "' escaped
|
|
*/
|
|
|
|
if (!commandShell->hasErrCtl)
|
|
escCmd = EscapeShellDblQuot(cmd);
|
|
|
|
if (shutUp) {
|
|
if (!(job->flags & JOB_SILENT) && !noSpecials &&
|
|
commandShell->hasEchoCtl) {
|
|
DBPRINTF("%s\n", commandShell->echoOff);
|
|
} else {
|
|
if (commandShell->hasErrCtl)
|
|
shutUp = FALSE;
|
|
}
|
|
}
|
|
|
|
if (errOff) {
|
|
if (!noSpecials) {
|
|
if (commandShell->hasErrCtl) {
|
|
/*
|
|
* we don't want the error-control commands showing
|
|
* up either, so we turn off echoing while executing
|
|
* them. We could put another field in the shell
|
|
* structure to tell JobDoOutput to look for this
|
|
* string too, but why make it any more complex than
|
|
* it already is?
|
|
*/
|
|
if (!(job->flags & JOB_SILENT) && !shutUp &&
|
|
commandShell->hasEchoCtl) {
|
|
DBPRINTF("%s\n", commandShell->echoOff);
|
|
DBPRINTF("%s\n", commandShell->errOffOrExecIgnore);
|
|
DBPRINTF("%s\n", commandShell->echoOn);
|
|
} else {
|
|
DBPRINTF("%s\n", commandShell->errOffOrExecIgnore);
|
|
}
|
|
} else if (commandShell->errOffOrExecIgnore &&
|
|
commandShell->errOffOrExecIgnore[0] != '\0')
|
|
{
|
|
/*
|
|
* The shell has no error control, so we need to be
|
|
* weird to get it to ignore any errors from the command.
|
|
* If echoing is turned on, we turn it off and use the
|
|
* errOnOrEcho template to echo the command. Leave echoing
|
|
* off so the user doesn't see the weirdness we go through
|
|
* to ignore errors. Set cmdTemplate to use the weirdness
|
|
* instead of the simple "%s\n" template.
|
|
*/
|
|
job->flags |= JOB_IGNERR;
|
|
if (!(job->flags & JOB_SILENT) && !shutUp) {
|
|
if (commandShell->hasEchoCtl) {
|
|
DBPRINTF("%s\n", commandShell->echoOff);
|
|
}
|
|
DBPRINTF(commandShell->errOnOrEcho, escCmd);
|
|
shutUp = TRUE;
|
|
} else {
|
|
if (!shutUp) {
|
|
DBPRINTF(commandShell->errOnOrEcho, escCmd);
|
|
}
|
|
}
|
|
cmdTemplate = commandShell->errOffOrExecIgnore;
|
|
/*
|
|
* The error ignoration (hee hee) is already taken care
|
|
* of by the errOffOrExecIgnore template, so pretend error
|
|
* checking is still on.
|
|
*/
|
|
errOff = FALSE;
|
|
} else {
|
|
errOff = FALSE;
|
|
}
|
|
} else {
|
|
errOff = FALSE;
|
|
}
|
|
} else {
|
|
|
|
/*
|
|
* If errors are being checked and the shell doesn't have error control
|
|
* but does supply an errExit template, then setup commands to run
|
|
* through it.
|
|
*/
|
|
|
|
if (!commandShell->hasErrCtl && commandShell->errExit &&
|
|
commandShell->errExit[0] != '\0') {
|
|
if (!(job->flags & JOB_SILENT) && !shutUp) {
|
|
if (commandShell->hasEchoCtl) {
|
|
DBPRINTF("%s\n", commandShell->echoOff);
|
|
}
|
|
DBPRINTF(commandShell->errOnOrEcho, escCmd);
|
|
shutUp = TRUE;
|
|
}
|
|
/* If it's a comment line or blank, treat as an ignored error */
|
|
if ((escCmd[0] == commandShell->commentChar) ||
|
|
(escCmd[0] == 0))
|
|
cmdTemplate = commandShell->errOffOrExecIgnore;
|
|
else
|
|
cmdTemplate = commandShell->errExit;
|
|
errOff = FALSE;
|
|
}
|
|
}
|
|
|
|
if (DEBUG(SHELL) && strcmp(shellName, "sh") == 0 &&
|
|
(job->flags & JOB_TRACED) == 0) {
|
|
DBPRINTF("set -%s\n", "x");
|
|
job->flags |= JOB_TRACED;
|
|
}
|
|
|
|
DBPRINTF(cmdTemplate, cmd);
|
|
free(cmdStart);
|
|
free(escCmd);
|
|
if (errOff) {
|
|
/*
|
|
* If echoing is already off, there's no point in issuing the
|
|
* echoOff command. Otherwise we issue it and pretend it was on
|
|
* for the whole command...
|
|
*/
|
|
if (!shutUp && !(job->flags & JOB_SILENT) && commandShell->hasEchoCtl){
|
|
DBPRINTF("%s\n", commandShell->echoOff);
|
|
shutUp = TRUE;
|
|
}
|
|
DBPRINTF("%s\n", commandShell->errOnOrEcho);
|
|
}
|
|
if (shutUp && commandShell->hasEchoCtl) {
|
|
DBPRINTF("%s\n", commandShell->echoOn);
|
|
}
|
|
}
|
|
|
|
/* Print all commands to the shell file that is later executed.
|
|
*
|
|
* The special command "..." stops printing and saves the remaining commands
|
|
* to be executed later. */
|
|
static void
|
|
JobPrintCommands(Job *job)
|
|
{
|
|
StringListNode *ln;
|
|
|
|
for (ln = job->node->commands->first; ln != NULL; ln = ln->next) {
|
|
const char *cmd = ln->datum;
|
|
|
|
if (strcmp(cmd, "...") == 0) {
|
|
job->node->type |= OP_SAVE_CMDS;
|
|
if ((job->flags & JOB_IGNDOTS) == 0) {
|
|
job->tailCmds = ln->next;
|
|
break;
|
|
}
|
|
} else
|
|
JobPrintCommand(job, ln->datum);
|
|
}
|
|
}
|
|
|
|
/* Save the delayed commands, to be executed when everything else is done. */
|
|
static void
|
|
JobSaveCommands(Job *job)
|
|
{
|
|
StringListNode *node;
|
|
|
|
for (node = job->tailCmds; node != NULL; node = node->next) {
|
|
const char *cmd = node->datum;
|
|
char *expanded_cmd;
|
|
/* XXX: This Var_Subst is only intended to expand the dynamic
|
|
* variables such as .TARGET, .IMPSRC. It is not intended to
|
|
* expand the other variables as well; see deptgt-end.mk. */
|
|
(void)Var_Subst(cmd, job->node, VARE_WANTRES, &expanded_cmd);
|
|
/* TODO: handle errors */
|
|
Lst_Append(Targ_GetEndNode()->commands, expanded_cmd);
|
|
}
|
|
}
|
|
|
|
|
|
/* Called to close both input and output pipes when a job is finished. */
|
|
static void
|
|
JobClose(Job *job)
|
|
{
|
|
clearfd(job);
|
|
(void)close(job->outPipe);
|
|
job->outPipe = -1;
|
|
|
|
JobDoOutput(job, TRUE);
|
|
(void)close(job->inPipe);
|
|
job->inPipe = -1;
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* JobFinish --
|
|
* Do final processing for the given job including updating
|
|
* parents and starting new jobs as available/necessary. Note
|
|
* that we pay no attention to the JOB_IGNERR flag here.
|
|
* This is because when we're called because of a noexecute flag
|
|
* or something, jstat.w_status is 0 and when called from
|
|
* Job_CatchChildren, the status is zeroed if it s/b ignored.
|
|
*
|
|
* Input:
|
|
* job job to finish
|
|
* status sub-why job went away
|
|
*
|
|
* Side Effects:
|
|
* Final commands for the job are placed on postCommands.
|
|
*
|
|
* If we got an error and are aborting (aborting == ABORT_ERROR) and
|
|
* the job list is now empty, we are done for the day.
|
|
* If we recognized an error (errors !=0), we set the aborting flag
|
|
* to ABORT_ERROR so no more jobs will be started.
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
JobFinish (Job *job, WAIT_T status)
|
|
{
|
|
Boolean done, return_job_token;
|
|
|
|
DEBUG3(JOB, "JobFinish: %d [%s], status %d\n",
|
|
job->pid, job->node->name, status);
|
|
|
|
if ((WIFEXITED(status) &&
|
|
(((WEXITSTATUS(status) != 0) && !(job->flags & JOB_IGNERR)))) ||
|
|
WIFSIGNALED(status))
|
|
{
|
|
/*
|
|
* If it exited non-zero and either we're doing things our
|
|
* way or we're not ignoring errors, the job is finished.
|
|
* Similarly, if the shell died because of a signal
|
|
* the job is also finished. In these
|
|
* cases, finish out the job's output before printing the exit
|
|
* status...
|
|
*/
|
|
JobClose(job);
|
|
if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
|
|
(void)fclose(job->cmdFILE);
|
|
job->cmdFILE = NULL;
|
|
}
|
|
done = TRUE;
|
|
} else if (WIFEXITED(status)) {
|
|
/*
|
|
* Deal with ignored errors in -B mode. We need to print a message
|
|
* telling of the ignored error as well as setting status.w_status
|
|
* to 0 so the next command gets run. To do this, we set done to be
|
|
* TRUE if in -B mode and the job exited non-zero.
|
|
*/
|
|
done = WEXITSTATUS(status) != 0;
|
|
/*
|
|
* Old comment said: "Note we don't
|
|
* want to close down any of the streams until we know we're at the
|
|
* end."
|
|
* But we do. Otherwise when are we going to print the rest of the
|
|
* stuff?
|
|
*/
|
|
JobClose(job);
|
|
} else {
|
|
/*
|
|
* No need to close things down or anything.
|
|
*/
|
|
done = FALSE;
|
|
}
|
|
|
|
if (done) {
|
|
if (WIFEXITED(status)) {
|
|
DEBUG2(JOB, "Process %d [%s] exited.\n",
|
|
job->pid, job->node->name);
|
|
if (WEXITSTATUS(status) != 0) {
|
|
if (job->node != lastNode) {
|
|
MESSAGE(stdout, job->node);
|
|
lastNode = job->node;
|
|
}
|
|
#ifdef USE_META
|
|
if (useMeta) {
|
|
meta_job_error(job, job->node, job->flags, WEXITSTATUS(status));
|
|
}
|
|
#endif
|
|
if (!dieQuietly(job->node, -1))
|
|
(void)printf("*** [%s] Error code %d%s\n",
|
|
job->node->name,
|
|
WEXITSTATUS(status),
|
|
(job->flags & JOB_IGNERR) ? " (ignored)" : "");
|
|
if (job->flags & JOB_IGNERR) {
|
|
WAIT_STATUS(status) = 0;
|
|
} else {
|
|
if (deleteOnError) {
|
|
JobDeleteTarget(job->node);
|
|
}
|
|
PrintOnError(job->node, NULL);
|
|
}
|
|
} else if (DEBUG(JOB)) {
|
|
if (job->node != lastNode) {
|
|
MESSAGE(stdout, job->node);
|
|
lastNode = job->node;
|
|
}
|
|
(void)printf("*** [%s] Completed successfully\n",
|
|
job->node->name);
|
|
}
|
|
} else {
|
|
if (job->node != lastNode) {
|
|
MESSAGE(stdout, job->node);
|
|
lastNode = job->node;
|
|
}
|
|
(void)printf("*** [%s] Signal %d\n",
|
|
job->node->name, WTERMSIG(status));
|
|
if (deleteOnError) {
|
|
JobDeleteTarget(job->node);
|
|
}
|
|
}
|
|
(void)fflush(stdout);
|
|
}
|
|
|
|
#ifdef USE_META
|
|
if (useMeta) {
|
|
int x;
|
|
|
|
if ((x = meta_job_finish(job)) != 0 && status == 0) {
|
|
status = x;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return_job_token = FALSE;
|
|
|
|
Trace_Log(JOBEND, job);
|
|
if (!(job->flags & JOB_SPECIAL)) {
|
|
if ((WAIT_STATUS(status) != 0) ||
|
|
(aborting == ABORT_ERROR) ||
|
|
(aborting == ABORT_INTERRUPT))
|
|
return_job_token = TRUE;
|
|
}
|
|
|
|
if ((aborting != ABORT_ERROR) && (aborting != ABORT_INTERRUPT) &&
|
|
(WAIT_STATUS(status) == 0)) {
|
|
/*
|
|
* As long as we aren't aborting and the job didn't return a non-zero
|
|
* status that we shouldn't ignore, we call Make_Update to update
|
|
* the parents.
|
|
*/
|
|
JobSaveCommands(job);
|
|
job->node->made = MADE;
|
|
if (!(job->flags & JOB_SPECIAL))
|
|
return_job_token = TRUE;
|
|
Make_Update(job->node);
|
|
job->job_state = JOB_ST_FREE;
|
|
} else if (WAIT_STATUS(status)) {
|
|
errors++;
|
|
job->job_state = JOB_ST_FREE;
|
|
}
|
|
|
|
/*
|
|
* Set aborting if any error.
|
|
*/
|
|
if (errors && !opts.keepgoing && (aborting != ABORT_INTERRUPT)) {
|
|
/*
|
|
* If we found any errors in this batch of children and the -k flag
|
|
* wasn't given, we set the aborting flag so no more jobs get
|
|
* started.
|
|
*/
|
|
aborting = ABORT_ERROR;
|
|
}
|
|
|
|
if (return_job_token)
|
|
Job_TokenReturn();
|
|
|
|
if (aborting == ABORT_ERROR && jobTokensRunning == 0) {
|
|
/*
|
|
* If we are aborting and the job table is now empty, we finish.
|
|
*/
|
|
Finish(errors);
|
|
}
|
|
}
|
|
|
|
/* Touch the given target. Called by JobStart when the -t flag was given.
|
|
*
|
|
* The modification date of the file is changed.
|
|
* If the file did not exist, it is created. */
|
|
void
|
|
Job_Touch(GNode *gn, Boolean silent)
|
|
{
|
|
int streamID; /* ID of stream opened to do the touch */
|
|
struct utimbuf times; /* Times for utime() call */
|
|
|
|
if (gn->type & (OP_JOIN|OP_USE|OP_USEBEFORE|OP_EXEC|OP_OPTIONAL|
|
|
OP_SPECIAL|OP_PHONY)) {
|
|
/*
|
|
* .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual" targets
|
|
* and, as such, shouldn't really be created.
|
|
*/
|
|
return;
|
|
}
|
|
|
|
if (!silent || !GNode_ShouldExecute(gn)) {
|
|
(void)fprintf(stdout, "touch %s\n", gn->name);
|
|
(void)fflush(stdout);
|
|
}
|
|
|
|
if (!GNode_ShouldExecute(gn)) {
|
|
return;
|
|
}
|
|
|
|
if (gn->type & OP_ARCHV) {
|
|
Arch_Touch(gn);
|
|
} else if (gn->type & OP_LIB) {
|
|
Arch_TouchLib(gn);
|
|
} else {
|
|
const char *file = GNode_Path(gn);
|
|
|
|
times.actime = times.modtime = now;
|
|
if (utime(file, ×) < 0){
|
|
streamID = open(file, O_RDWR | O_CREAT, 0666);
|
|
|
|
if (streamID >= 0) {
|
|
char c;
|
|
|
|
/*
|
|
* Read and write a byte to the file to change the
|
|
* modification time, then close the file.
|
|
*/
|
|
if (read(streamID, &c, 1) == 1) {
|
|
(void)lseek(streamID, (off_t)0, SEEK_SET);
|
|
while (write(streamID, &c, 1) == -1 && errno == EAGAIN)
|
|
continue;
|
|
}
|
|
|
|
(void)close(streamID);
|
|
} else {
|
|
(void)fprintf(stdout, "*** couldn't touch %s: %s",
|
|
file, strerror(errno));
|
|
(void)fflush(stdout);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Make sure the given node has all the commands it needs.
|
|
*
|
|
* The node will have commands from the .DEFAULT rule added to it if it
|
|
* needs them.
|
|
*
|
|
* Input:
|
|
* gn The target whose commands need verifying
|
|
* abortProc Function to abort with message
|
|
*
|
|
* Results:
|
|
* TRUE if the commands list is/was ok.
|
|
*/
|
|
Boolean
|
|
Job_CheckCommands(GNode *gn, void (*abortProc)(const char *, ...))
|
|
{
|
|
if (GNode_IsTarget(gn))
|
|
return TRUE;
|
|
if (!Lst_IsEmpty(gn->commands))
|
|
return TRUE;
|
|
if ((gn->type & OP_LIB) && !Lst_IsEmpty(gn->children))
|
|
return TRUE;
|
|
|
|
/*
|
|
* No commands. Look for .DEFAULT rule from which we might infer
|
|
* commands
|
|
*/
|
|
if ((DEFAULT != NULL) && !Lst_IsEmpty(DEFAULT->commands) &&
|
|
(gn->type & OP_SPECIAL) == 0) {
|
|
/*
|
|
* Make only looks for a .DEFAULT if the node was never the
|
|
* target of an operator, so that's what we do too. If
|
|
* a .DEFAULT was given, we substitute its commands for gn's
|
|
* commands and set the IMPSRC variable to be the target's name
|
|
* The DEFAULT node acts like a transformation rule, in that
|
|
* gn also inherits any attributes or sources attached to
|
|
* .DEFAULT itself.
|
|
*/
|
|
Make_HandleUse(DEFAULT, gn);
|
|
Var_Set(IMPSRC, GNode_VarTarget(gn), gn);
|
|
return TRUE;
|
|
}
|
|
|
|
if (Dir_MTime(gn, 0) != 0 || (gn->type & OP_SPECIAL))
|
|
return TRUE;
|
|
|
|
/*
|
|
* The node wasn't the target of an operator. We have no .DEFAULT
|
|
* rule to go on and the target doesn't already exist. There's
|
|
* nothing more we can do for this branch. If the -k flag wasn't
|
|
* given, we stop in our tracks, otherwise we just don't update
|
|
* this node's parents so they never get examined.
|
|
*/
|
|
|
|
if (gn->flags & FROM_DEPEND) {
|
|
if (!Job_RunTarget(".STALE", gn->fname))
|
|
fprintf(stdout, "%s: %s, %d: ignoring stale %s for %s\n",
|
|
progname, gn->fname, gn->lineno, makeDependfile,
|
|
gn->name);
|
|
return TRUE;
|
|
}
|
|
|
|
if (gn->type & OP_OPTIONAL) {
|
|
(void)fprintf(stdout, "%s: don't know how to make %s (%s)\n",
|
|
progname, gn->name, "ignored");
|
|
(void)fflush(stdout);
|
|
return TRUE;
|
|
}
|
|
|
|
if (opts.keepgoing) {
|
|
(void)fprintf(stdout, "%s: don't know how to make %s (%s)\n",
|
|
progname, gn->name, "continuing");
|
|
(void)fflush(stdout);
|
|
return FALSE;
|
|
}
|
|
|
|
abortProc("%s: don't know how to make %s. Stop", progname, gn->name);
|
|
return FALSE;
|
|
}
|
|
|
|
/* Execute the shell for the given job.
|
|
*
|
|
* A shell is executed, its output is altered and the Job structure added
|
|
* to the job table.
|
|
*/
|
|
static void
|
|
JobExec(Job *job, char **argv)
|
|
{
|
|
int cpid; /* ID of new child */
|
|
sigset_t mask;
|
|
|
|
job->flags &= ~JOB_TRACED;
|
|
|
|
if (DEBUG(JOB)) {
|
|
int i;
|
|
|
|
debug_printf("Running %s %sly\n", job->node->name, "local");
|
|
debug_printf("\tCommand: ");
|
|
for (i = 0; argv[i] != NULL; i++) {
|
|
debug_printf("%s ", argv[i]);
|
|
}
|
|
debug_printf("\n");
|
|
}
|
|
|
|
/*
|
|
* Some jobs produce no output and it's disconcerting to have
|
|
* no feedback of their running (since they produce no output, the
|
|
* banner with their name in it never appears). This is an attempt to
|
|
* provide that feedback, even if nothing follows it.
|
|
*/
|
|
if ((lastNode != job->node) && !(job->flags & JOB_SILENT)) {
|
|
MESSAGE(stdout, job->node);
|
|
lastNode = job->node;
|
|
}
|
|
|
|
/* No interruptions until this job is on the `jobs' list */
|
|
JobSigLock(&mask);
|
|
|
|
/* Pre-emptively mark job running, pid still zero though */
|
|
job->job_state = JOB_ST_RUNNING;
|
|
|
|
cpid = vFork();
|
|
if (cpid == -1)
|
|
Punt("Cannot vfork: %s", strerror(errno));
|
|
|
|
if (cpid == 0) {
|
|
/* Child */
|
|
sigset_t tmask;
|
|
|
|
#ifdef USE_META
|
|
if (useMeta) {
|
|
meta_job_child(job);
|
|
}
|
|
#endif
|
|
/*
|
|
* Reset all signal handlers; this is necessary because we also
|
|
* need to unblock signals before we exec(2).
|
|
*/
|
|
JobSigReset();
|
|
|
|
/* Now unblock signals */
|
|
sigemptyset(&tmask);
|
|
JobSigUnlock(&tmask);
|
|
|
|
/*
|
|
* Must duplicate the input stream down to the child's input and
|
|
* reset it to the beginning (again). Since the stream was marked
|
|
* close-on-exec, we must clear that bit in the new input.
|
|
*/
|
|
if (dup2(fileno(job->cmdFILE), 0) == -1)
|
|
execDie("dup2", "job->cmdFILE");
|
|
if (fcntl(0, F_SETFD, 0) == -1)
|
|
execDie("fcntl clear close-on-exec", "stdin");
|
|
if (lseek(0, (off_t)0, SEEK_SET) == -1)
|
|
execDie("lseek to 0", "stdin");
|
|
|
|
if (Always_pass_job_queue ||
|
|
(job->node->type & (OP_MAKE | OP_SUBMAKE))) {
|
|
/*
|
|
* Pass job token pipe to submakes.
|
|
*/
|
|
if (fcntl(tokenWaitJob.inPipe, F_SETFD, 0) == -1)
|
|
execDie("clear close-on-exec", "tokenWaitJob.inPipe");
|
|
if (fcntl(tokenWaitJob.outPipe, F_SETFD, 0) == -1)
|
|
execDie("clear close-on-exec", "tokenWaitJob.outPipe");
|
|
}
|
|
|
|
/*
|
|
* Set up the child's output to be routed through the pipe
|
|
* we've created for it.
|
|
*/
|
|
if (dup2(job->outPipe, 1) == -1)
|
|
execDie("dup2", "job->outPipe");
|
|
|
|
/*
|
|
* The output channels are marked close on exec. This bit was
|
|
* duplicated by the dup2(on some systems), so we have to clear
|
|
* it before routing the shell's error output to the same place as
|
|
* its standard output.
|
|
*/
|
|
if (fcntl(1, F_SETFD, 0) == -1)
|
|
execDie("clear close-on-exec", "stdout");
|
|
if (dup2(1, 2) == -1)
|
|
execDie("dup2", "1, 2");
|
|
|
|
/*
|
|
* We want to switch the child into a different process family so
|
|
* we can kill it and all its descendants in one fell swoop,
|
|
* by killing its process family, but not commit suicide.
|
|
*/
|
|
#if defined(HAVE_SETPGID)
|
|
(void)setpgid(0, getpid());
|
|
#else
|
|
#if defined(HAVE_SETSID)
|
|
/* XXX: dsl - I'm sure this should be setpgrp()... */
|
|
(void)setsid();
|
|
#else
|
|
(void)setpgrp(0, getpid());
|
|
#endif
|
|
#endif
|
|
|
|
Var_ExportVars();
|
|
|
|
(void)execv(shellPath, argv);
|
|
execDie("exec", shellPath);
|
|
}
|
|
|
|
/* Parent, continuing after the child exec */
|
|
job->pid = cpid;
|
|
|
|
Trace_Log(JOBSTART, job);
|
|
|
|
#ifdef USE_META
|
|
if (useMeta) {
|
|
meta_job_parent(job, cpid);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Set the current position in the buffer to the beginning
|
|
* and mark another stream to watch in the outputs mask
|
|
*/
|
|
job->curPos = 0;
|
|
|
|
watchfd(job);
|
|
|
|
if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
|
|
(void)fclose(job->cmdFILE);
|
|
job->cmdFILE = NULL;
|
|
}
|
|
|
|
/*
|
|
* Now the job is actually running, add it to the table.
|
|
*/
|
|
if (DEBUG(JOB)) {
|
|
debug_printf("JobExec(%s): pid %d added to jobs table\n",
|
|
job->node->name, job->pid);
|
|
job_table_dump("job started");
|
|
}
|
|
JobSigUnlock(&mask);
|
|
}
|
|
|
|
/* Create the argv needed to execute the shell for a given job. */
|
|
static void
|
|
JobMakeArgv(Job *job, char **argv)
|
|
{
|
|
int argc;
|
|
static char args[10]; /* For merged arguments */
|
|
|
|
argv[0] = UNCONST(shellName);
|
|
argc = 1;
|
|
|
|
if ((commandShell->exit && commandShell->exit[0] != '-') ||
|
|
(commandShell->echo && commandShell->echo[0] != '-'))
|
|
{
|
|
/*
|
|
* At least one of the flags doesn't have a minus before it, so
|
|
* merge them together. Have to do this because the *(&(@*#*&#$#
|
|
* Bourne shell thinks its second argument is a file to source.
|
|
* Grrrr. Note the ten-character limitation on the combined arguments.
|
|
*/
|
|
(void)snprintf(args, sizeof(args), "-%s%s",
|
|
((job->flags & JOB_IGNERR) ? "" :
|
|
(commandShell->exit ? commandShell->exit : "")),
|
|
((job->flags & JOB_SILENT) ? "" :
|
|
(commandShell->echo ? commandShell->echo : "")));
|
|
|
|
if (args[1]) {
|
|
argv[argc] = args;
|
|
argc++;
|
|
}
|
|
} else {
|
|
if (!(job->flags & JOB_IGNERR) && commandShell->exit) {
|
|
argv[argc] = UNCONST(commandShell->exit);
|
|
argc++;
|
|
}
|
|
if (!(job->flags & JOB_SILENT) && commandShell->echo) {
|
|
argv[argc] = UNCONST(commandShell->echo);
|
|
argc++;
|
|
}
|
|
}
|
|
argv[argc] = NULL;
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* JobStart --
|
|
* Start a target-creation process going for the target described
|
|
* by the graph node gn.
|
|
*
|
|
* Input:
|
|
* gn target to create
|
|
* flags flags for the job to override normal ones.
|
|
* e.g. JOB_SPECIAL or JOB_IGNDOTS
|
|
* previous The previous Job structure for this node, if any.
|
|
*
|
|
* Results:
|
|
* JOB_ERROR if there was an error in the commands, JOB_FINISHED
|
|
* if there isn't actually anything left to do for the job and
|
|
* JOB_RUNNING if the job has been started.
|
|
*
|
|
* Side Effects:
|
|
* A new Job node is created and added to the list of running
|
|
* jobs. PMake is forked and a child shell created.
|
|
*
|
|
* NB: I'm fairly sure that this code is never called with JOB_SPECIAL set
|
|
* JOB_IGNDOTS is never set (dsl)
|
|
* Also the return value is ignored by everyone.
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static JobStartResult
|
|
JobStart(GNode *gn, int flags)
|
|
{
|
|
Job *job; /* new job descriptor */
|
|
char *argv[10]; /* Argument vector to shell */
|
|
Boolean cmdsOK; /* true if the nodes commands were all right */
|
|
Boolean noExec; /* Set true if we decide not to run the job */
|
|
int tfd; /* File descriptor to the temp file */
|
|
|
|
for (job = job_table; job < job_table_end; job++) {
|
|
if (job->job_state == JOB_ST_FREE)
|
|
break;
|
|
}
|
|
if (job >= job_table_end)
|
|
Punt("JobStart no job slots vacant");
|
|
|
|
memset(job, 0, sizeof *job);
|
|
job->job_state = JOB_ST_SETUP;
|
|
if (gn->type & OP_SPECIAL)
|
|
flags |= JOB_SPECIAL;
|
|
|
|
job->node = gn;
|
|
job->tailCmds = NULL;
|
|
|
|
/*
|
|
* Set the initial value of the flags for this job based on the global
|
|
* ones and the node's attributes... Any flags supplied by the caller
|
|
* are also added to the field.
|
|
*/
|
|
job->flags = 0;
|
|
if (Targ_Ignore(gn)) {
|
|
job->flags |= JOB_IGNERR;
|
|
}
|
|
if (Targ_Silent(gn)) {
|
|
job->flags |= JOB_SILENT;
|
|
}
|
|
job->flags |= flags;
|
|
|
|
/*
|
|
* Check the commands now so any attributes from .DEFAULT have a chance
|
|
* to migrate to the node
|
|
*/
|
|
cmdsOK = Job_CheckCommands(gn, Error);
|
|
|
|
job->inPollfd = NULL;
|
|
/*
|
|
* If the -n flag wasn't given, we open up OUR (not the child's)
|
|
* temporary file to stuff commands in it. The thing is rd/wr so we don't
|
|
* need to reopen it to feed it to the shell. If the -n flag *was* given,
|
|
* we just set the file to be stdout. Cute, huh?
|
|
*/
|
|
if (((gn->type & OP_MAKE) && !opts.noRecursiveExecute) ||
|
|
(!opts.noExecute && !opts.touchFlag)) {
|
|
/*
|
|
* tfile is the name of a file into which all shell commands are
|
|
* put. It is removed before the child shell is executed, unless
|
|
* DEBUG(SCRIPT) is set.
|
|
*/
|
|
char *tfile;
|
|
sigset_t mask;
|
|
/*
|
|
* We're serious here, but if the commands were bogus, we're
|
|
* also dead...
|
|
*/
|
|
if (!cmdsOK) {
|
|
PrintOnError(gn, NULL); /* provide some clue */
|
|
DieHorribly();
|
|
}
|
|
|
|
JobSigLock(&mask);
|
|
tfd = mkTempFile(TMPPAT, &tfile);
|
|
if (!DEBUG(SCRIPT))
|
|
(void)eunlink(tfile);
|
|
JobSigUnlock(&mask);
|
|
|
|
job->cmdFILE = fdopen(tfd, "w+");
|
|
if (job->cmdFILE == NULL) {
|
|
Punt("Could not fdopen %s", tfile);
|
|
}
|
|
(void)fcntl(fileno(job->cmdFILE), F_SETFD, FD_CLOEXEC);
|
|
/*
|
|
* Send the commands to the command file, flush all its buffers then
|
|
* rewind and remove the thing.
|
|
*/
|
|
noExec = FALSE;
|
|
|
|
#ifdef USE_META
|
|
if (useMeta) {
|
|
meta_job_start(job, gn);
|
|
if (Targ_Silent(gn)) { /* might have changed */
|
|
job->flags |= JOB_SILENT;
|
|
}
|
|
}
|
|
#endif
|
|
/*
|
|
* We can do all the commands at once. hooray for sanity
|
|
*/
|
|
numCommands = 0;
|
|
JobPrintCommands(job);
|
|
|
|
/*
|
|
* If we didn't print out any commands to the shell script,
|
|
* there's not much point in executing the shell, is there?
|
|
*/
|
|
if (numCommands == 0) {
|
|
noExec = TRUE;
|
|
}
|
|
|
|
free(tfile);
|
|
} else if (!GNode_ShouldExecute(gn)) {
|
|
/*
|
|
* Not executing anything -- just print all the commands to stdout
|
|
* in one fell swoop. This will still set up job->tailCmds correctly.
|
|
*/
|
|
if (lastNode != gn) {
|
|
MESSAGE(stdout, gn);
|
|
lastNode = gn;
|
|
}
|
|
job->cmdFILE = stdout;
|
|
/*
|
|
* Only print the commands if they're ok, but don't die if they're
|
|
* not -- just let the user know they're bad and keep going. It
|
|
* doesn't do any harm in this case and may do some good.
|
|
*/
|
|
if (cmdsOK)
|
|
JobPrintCommands(job);
|
|
/*
|
|
* Don't execute the shell, thank you.
|
|
*/
|
|
noExec = TRUE;
|
|
} else {
|
|
/*
|
|
* Just touch the target and note that no shell should be executed.
|
|
* Set cmdFILE to stdout to make life easier. Check the commands, too,
|
|
* but don't die if they're no good -- it does no harm to keep working
|
|
* up the graph.
|
|
*/
|
|
job->cmdFILE = stdout;
|
|
Job_Touch(gn, job->flags&JOB_SILENT);
|
|
noExec = TRUE;
|
|
}
|
|
/* Just in case it isn't already... */
|
|
(void)fflush(job->cmdFILE);
|
|
|
|
/*
|
|
* If we're not supposed to execute a shell, don't.
|
|
*/
|
|
if (noExec) {
|
|
if (!(job->flags & JOB_SPECIAL))
|
|
Job_TokenReturn();
|
|
/*
|
|
* Unlink and close the command file if we opened one
|
|
*/
|
|
if (job->cmdFILE != stdout) {
|
|
if (job->cmdFILE != NULL) {
|
|
(void)fclose(job->cmdFILE);
|
|
job->cmdFILE = NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* We only want to work our way up the graph if we aren't here because
|
|
* the commands for the job were no good.
|
|
*/
|
|
if (cmdsOK && aborting == ABORT_NONE) {
|
|
JobSaveCommands(job);
|
|
job->node->made = MADE;
|
|
Make_Update(job->node);
|
|
}
|
|
job->job_state = JOB_ST_FREE;
|
|
return cmdsOK ? JOB_FINISHED : JOB_ERROR;
|
|
}
|
|
|
|
/*
|
|
* Set up the control arguments to the shell. This is based on the flags
|
|
* set earlier for this job.
|
|
*/
|
|
JobMakeArgv(job, argv);
|
|
|
|
/* Create the pipe by which we'll get the shell's output. */
|
|
JobCreatePipe(job, 3);
|
|
|
|
JobExec(job, argv);
|
|
return JOB_RUNNING;
|
|
}
|
|
|
|
static char *
|
|
JobOutput(Job *job, char *cp, char *endp)
|
|
{
|
|
char *ecp;
|
|
|
|
if (commandShell->noPrint && commandShell->noPrint[0] != '\0') {
|
|
while ((ecp = strstr(cp, commandShell->noPrint)) != NULL) {
|
|
if (cp != ecp) {
|
|
*ecp = '\0';
|
|
/*
|
|
* The only way there wouldn't be a newline after
|
|
* this line is if it were the last in the buffer.
|
|
* however, since the non-printable comes after it,
|
|
* there must be a newline, so we don't print one.
|
|
*/
|
|
(void)fprintf(stdout, "%s", cp);
|
|
(void)fflush(stdout);
|
|
}
|
|
cp = ecp + commandShell->noPrintLen;
|
|
if (cp != endp) {
|
|
/*
|
|
* Still more to print, look again after skipping
|
|
* the whitespace following the non-printable
|
|
* command....
|
|
*/
|
|
cp++;
|
|
while (*cp == ' ' || *cp == '\t' || *cp == '\n') {
|
|
cp++;
|
|
}
|
|
} else {
|
|
return cp;
|
|
}
|
|
}
|
|
}
|
|
return cp;
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* JobDoOutput --
|
|
* This function is called at different times depending on
|
|
* whether the user has specified that output is to be collected
|
|
* via pipes or temporary files. In the former case, we are called
|
|
* whenever there is something to read on the pipe. We collect more
|
|
* output from the given job and store it in the job's outBuf. If
|
|
* this makes up a line, we print it tagged by the job's identifier,
|
|
* as necessary.
|
|
* If output has been collected in a temporary file, we open the
|
|
* file and read it line by line, transferring it to our own
|
|
* output channel until the file is empty. At which point we
|
|
* remove the temporary file.
|
|
* In both cases, however, we keep our figurative eye out for the
|
|
* 'noPrint' line for the shell from which the output came. If
|
|
* we recognize a line, we don't print it. If the command is not
|
|
* alone on the line (the character after it is not \0 or \n), we
|
|
* do print whatever follows it.
|
|
*
|
|
* Input:
|
|
* job the job whose output needs printing
|
|
* finish TRUE if this is the last time we'll be called
|
|
* for this job
|
|
*
|
|
* Side Effects:
|
|
* curPos may be shifted as may the contents of outBuf.
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
JobDoOutput(Job *job, Boolean finish)
|
|
{
|
|
Boolean gotNL = FALSE; /* true if got a newline */
|
|
Boolean fbuf; /* true if our buffer filled up */
|
|
size_t nr; /* number of bytes read */
|
|
size_t i; /* auxiliary index into outBuf */
|
|
size_t max; /* limit for i (end of current data) */
|
|
ssize_t nRead; /* (Temporary) number of bytes read */
|
|
|
|
/*
|
|
* Read as many bytes as will fit in the buffer.
|
|
*/
|
|
end_loop:
|
|
gotNL = FALSE;
|
|
fbuf = FALSE;
|
|
|
|
nRead = read(job->inPipe, &job->outBuf[job->curPos],
|
|
JOB_BUFSIZE - job->curPos);
|
|
if (nRead < 0) {
|
|
if (errno == EAGAIN)
|
|
return;
|
|
if (DEBUG(JOB)) {
|
|
perror("JobDoOutput(piperead)");
|
|
}
|
|
nr = 0;
|
|
} else {
|
|
nr = (size_t)nRead;
|
|
}
|
|
|
|
/*
|
|
* If we hit the end-of-file (the job is dead), we must flush its
|
|
* remaining output, so pretend we read a newline if there's any
|
|
* output remaining in the buffer.
|
|
* Also clear the 'finish' flag so we stop looping.
|
|
*/
|
|
if ((nr == 0) && (job->curPos != 0)) {
|
|
job->outBuf[job->curPos] = '\n';
|
|
nr = 1;
|
|
finish = FALSE;
|
|
} else if (nr == 0) {
|
|
finish = FALSE;
|
|
}
|
|
|
|
/*
|
|
* Look for the last newline in the bytes we just got. If there is
|
|
* one, break out of the loop with 'i' as its index and gotNL set
|
|
* TRUE.
|
|
*/
|
|
max = job->curPos + nr;
|
|
for (i = job->curPos + nr - 1; i >= job->curPos && i != (size_t)-1; i--) {
|
|
if (job->outBuf[i] == '\n') {
|
|
gotNL = TRUE;
|
|
break;
|
|
} else if (job->outBuf[i] == '\0') {
|
|
/*
|
|
* Why?
|
|
*/
|
|
job->outBuf[i] = ' ';
|
|
}
|
|
}
|
|
|
|
if (!gotNL) {
|
|
job->curPos += nr;
|
|
if (job->curPos == JOB_BUFSIZE) {
|
|
/*
|
|
* If we've run out of buffer space, we have no choice
|
|
* but to print the stuff. sigh.
|
|
*/
|
|
fbuf = TRUE;
|
|
i = job->curPos;
|
|
}
|
|
}
|
|
if (gotNL || fbuf) {
|
|
/*
|
|
* Need to send the output to the screen. Null terminate it
|
|
* first, overwriting the newline character if there was one.
|
|
* So long as the line isn't one we should filter (according
|
|
* to the shell description), we print the line, preceded
|
|
* by a target banner if this target isn't the same as the
|
|
* one for which we last printed something.
|
|
* The rest of the data in the buffer are then shifted down
|
|
* to the start of the buffer and curPos is set accordingly.
|
|
*/
|
|
job->outBuf[i] = '\0';
|
|
if (i >= job->curPos) {
|
|
char *cp;
|
|
|
|
cp = JobOutput(job, job->outBuf, &job->outBuf[i]);
|
|
|
|
/*
|
|
* There's still more in that thar buffer. This time, though,
|
|
* we know there's no newline at the end, so we add one of
|
|
* our own free will.
|
|
*/
|
|
if (*cp != '\0') {
|
|
if (!opts.beSilent && job->node != lastNode) {
|
|
MESSAGE(stdout, job->node);
|
|
lastNode = job->node;
|
|
}
|
|
#ifdef USE_META
|
|
if (useMeta) {
|
|
meta_job_output(job, cp, gotNL ? "\n" : "");
|
|
}
|
|
#endif
|
|
(void)fprintf(stdout, "%s%s", cp, gotNL ? "\n" : "");
|
|
(void)fflush(stdout);
|
|
}
|
|
}
|
|
/*
|
|
* max is the last offset still in the buffer. Move any remaining
|
|
* characters to the start of the buffer and update the end marker
|
|
* curPos.
|
|
*/
|
|
if (i < max) {
|
|
(void)memmove(job->outBuf, &job->outBuf[i + 1], max - (i + 1));
|
|
job->curPos = max - (i + 1);
|
|
} else {
|
|
assert(i == max);
|
|
job->curPos = 0;
|
|
}
|
|
}
|
|
if (finish) {
|
|
/*
|
|
* If the finish flag is true, we must loop until we hit
|
|
* end-of-file on the pipe. This is guaranteed to happen
|
|
* eventually since the other end of the pipe is now closed
|
|
* (we closed it explicitly and the child has exited). When
|
|
* we do get an EOF, finish will be set FALSE and we'll fall
|
|
* through and out.
|
|
*/
|
|
goto end_loop;
|
|
}
|
|
}
|
|
|
|
static void
|
|
JobRun(GNode *targ)
|
|
{
|
|
#if 0
|
|
/*
|
|
* Unfortunately it is too complicated to run .BEGIN, .END, and
|
|
* .INTERRUPT job in the parallel job module. As of 2020-09-25,
|
|
* unit-tests/deptgt-end-jobs.mk hangs in an endless loop.
|
|
*
|
|
* Running these jobs in compat mode also guarantees that these
|
|
* jobs do not overlap with other unrelated jobs.
|
|
*/
|
|
List *lst = Lst_New();
|
|
Lst_Append(lst, targ);
|
|
(void)Make_Run(lst);
|
|
Lst_Destroy(lst, NULL);
|
|
JobStart(targ, JOB_SPECIAL);
|
|
while (jobTokensRunning) {
|
|
Job_CatchOutput();
|
|
}
|
|
#else
|
|
Compat_Make(targ, targ);
|
|
if (targ->made == ERROR) {
|
|
PrintOnError(targ, "\n\nStop.");
|
|
exit(1);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/* Handle the exit of a child. Called from Make_Make.
|
|
*
|
|
* The job descriptor is removed from the list of children.
|
|
*
|
|
* Notes:
|
|
* We do waits, blocking or not, according to the wisdom of our
|
|
* caller, until there are no more children to report. For each
|
|
* job, call JobFinish to finish things off.
|
|
*/
|
|
void
|
|
Job_CatchChildren(void)
|
|
{
|
|
int pid; /* pid of dead child */
|
|
WAIT_T status; /* Exit/termination status */
|
|
|
|
/*
|
|
* Don't even bother if we know there's no one around.
|
|
*/
|
|
if (jobTokensRunning == 0)
|
|
return;
|
|
|
|
while ((pid = waitpid((pid_t) -1, &status, WNOHANG | WUNTRACED)) > 0) {
|
|
DEBUG2(JOB, "Process %d exited/stopped status %x.\n", pid,
|
|
WAIT_STATUS(status));
|
|
JobReapChild(pid, status, TRUE);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* It is possible that wait[pid]() was called from elsewhere,
|
|
* this lets us reap jobs regardless.
|
|
*/
|
|
void
|
|
JobReapChild(pid_t pid, WAIT_T status, Boolean isJobs)
|
|
{
|
|
Job *job; /* job descriptor for dead child */
|
|
|
|
/*
|
|
* Don't even bother if we know there's no one around.
|
|
*/
|
|
if (jobTokensRunning == 0)
|
|
return;
|
|
|
|
job = JobFindPid(pid, JOB_ST_RUNNING, isJobs);
|
|
if (job == NULL) {
|
|
if (isJobs) {
|
|
if (!lurking_children)
|
|
Error("Child (%d) status %x not in table?", pid, status);
|
|
}
|
|
return; /* not ours */
|
|
}
|
|
if (WIFSTOPPED(status)) {
|
|
DEBUG2(JOB, "Process %d (%s) stopped.\n", job->pid, job->node->name);
|
|
if (!make_suspended) {
|
|
switch (WSTOPSIG(status)) {
|
|
case SIGTSTP:
|
|
(void)printf("*** [%s] Suspended\n", job->node->name);
|
|
break;
|
|
case SIGSTOP:
|
|
(void)printf("*** [%s] Stopped\n", job->node->name);
|
|
break;
|
|
default:
|
|
(void)printf("*** [%s] Stopped -- signal %d\n",
|
|
job->node->name, WSTOPSIG(status));
|
|
}
|
|
job->job_suspended = 1;
|
|
}
|
|
(void)fflush(stdout);
|
|
return;
|
|
}
|
|
|
|
job->job_state = JOB_ST_FINISHED;
|
|
job->exit_status = WAIT_STATUS(status);
|
|
|
|
JobFinish(job, status);
|
|
}
|
|
|
|
/* Catch the output from our children, if we're using pipes do so. Otherwise
|
|
* just block time until we get a signal(most likely a SIGCHLD) since there's
|
|
* no point in just spinning when there's nothing to do and the reaping of a
|
|
* child can wait for a while. */
|
|
void
|
|
Job_CatchOutput(void)
|
|
{
|
|
int nready;
|
|
Job *job;
|
|
unsigned int i;
|
|
|
|
(void)fflush(stdout);
|
|
|
|
/* The first fd in the list is the job token pipe */
|
|
do {
|
|
nready = poll(fds + 1 - wantToken, nfds - 1 + wantToken, POLL_MSEC);
|
|
} while (nready < 0 && errno == EINTR);
|
|
|
|
if (nready < 0)
|
|
Punt("poll: %s", strerror(errno));
|
|
|
|
if (nready > 0 && readyfd(&childExitJob)) {
|
|
char token = 0;
|
|
ssize_t count;
|
|
count = read(childExitJob.inPipe, &token, 1);
|
|
switch (count) {
|
|
case 0:
|
|
Punt("unexpected eof on token pipe");
|
|
case -1:
|
|
Punt("token pipe read: %s", strerror(errno));
|
|
case 1:
|
|
if (token == DO_JOB_RESUME[0])
|
|
/* Complete relay requested from our SIGCONT handler */
|
|
JobRestartJobs();
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
--nready;
|
|
}
|
|
|
|
Job_CatchChildren();
|
|
if (nready == 0)
|
|
return;
|
|
|
|
for (i = npseudojobs * nfds_per_job(); i < nfds; i++) {
|
|
if (!fds[i].revents)
|
|
continue;
|
|
job = jobfds[i];
|
|
if (job->job_state == JOB_ST_RUNNING)
|
|
JobDoOutput(job, FALSE);
|
|
#if defined(USE_FILEMON) && !defined(USE_FILEMON_DEV)
|
|
/*
|
|
* With meta mode, we may have activity on the job's filemon
|
|
* descriptor too, which at the moment is any pollfd other than
|
|
* job->inPollfd.
|
|
*/
|
|
if (useMeta && job->inPollfd != &fds[i]) {
|
|
if (meta_job_event(job) <= 0) {
|
|
fds[i].events = 0; /* never mind */
|
|
}
|
|
}
|
|
#endif
|
|
if (--nready == 0)
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* Start the creation of a target. Basically a front-end for JobStart used by
|
|
* the Make module. */
|
|
void
|
|
Job_Make(GNode *gn)
|
|
{
|
|
(void)JobStart(gn, 0);
|
|
}
|
|
|
|
void
|
|
Shell_Init(void)
|
|
{
|
|
if (shellPath == NULL) {
|
|
/*
|
|
* We are using the default shell, which may be an absolute
|
|
* path if DEFSHELL_CUSTOM is defined.
|
|
*/
|
|
shellName = commandShell->name;
|
|
#ifdef DEFSHELL_CUSTOM
|
|
if (*shellName == '/') {
|
|
shellPath = shellName;
|
|
shellName = strrchr(shellPath, '/');
|
|
shellName++;
|
|
} else
|
|
#endif
|
|
shellPath = str_concat3(_PATH_DEFSHELLDIR, "/", shellName);
|
|
}
|
|
Var_Set_with_flags(".SHELL", shellPath, VAR_CMDLINE, VAR_SET_READONLY);
|
|
if (commandShell->exit == NULL) {
|
|
commandShell->exit = "";
|
|
}
|
|
if (commandShell->echo == NULL) {
|
|
commandShell->echo = "";
|
|
}
|
|
if (commandShell->hasErrCtl && commandShell->exit[0] != '\0') {
|
|
if (shellErrFlag &&
|
|
strcmp(commandShell->exit, &shellErrFlag[1]) != 0) {
|
|
free(shellErrFlag);
|
|
shellErrFlag = NULL;
|
|
}
|
|
if (!shellErrFlag) {
|
|
size_t n = strlen(commandShell->exit) + 2;
|
|
|
|
shellErrFlag = bmake_malloc(n);
|
|
if (shellErrFlag) {
|
|
snprintf(shellErrFlag, n, "-%s", commandShell->exit);
|
|
}
|
|
}
|
|
} else if (shellErrFlag) {
|
|
free(shellErrFlag);
|
|
shellErrFlag = NULL;
|
|
}
|
|
}
|
|
|
|
/* Return the string literal that is used in the current command shell
|
|
* to produce a newline character. */
|
|
const char *
|
|
Shell_GetNewline(void)
|
|
{
|
|
return commandShell->newline;
|
|
}
|
|
|
|
void
|
|
Job_SetPrefix(void)
|
|
{
|
|
if (targPrefix) {
|
|
free(targPrefix);
|
|
} else if (!Var_Exists(MAKE_JOB_PREFIX, VAR_GLOBAL)) {
|
|
Var_Set(MAKE_JOB_PREFIX, "---", VAR_GLOBAL);
|
|
}
|
|
|
|
(void)Var_Subst("${" MAKE_JOB_PREFIX "}",
|
|
VAR_GLOBAL, VARE_WANTRES, &targPrefix);
|
|
/* TODO: handle errors */
|
|
}
|
|
|
|
/* Initialize the process module. */
|
|
void
|
|
Job_Init(void)
|
|
{
|
|
Job_SetPrefix();
|
|
/* Allocate space for all the job info */
|
|
job_table = bmake_malloc((size_t)opts.maxJobs * sizeof *job_table);
|
|
memset(job_table, 0, (size_t)opts.maxJobs * sizeof *job_table);
|
|
job_table_end = job_table + opts.maxJobs;
|
|
wantToken = 0;
|
|
|
|
aborting = ABORT_NONE;
|
|
errors = 0;
|
|
|
|
lastNode = NULL;
|
|
|
|
Always_pass_job_queue = getBoolean(MAKE_ALWAYS_PASS_JOB_QUEUE,
|
|
Always_pass_job_queue);
|
|
|
|
Job_error_token = getBoolean(MAKE_JOB_ERROR_TOKEN, Job_error_token);
|
|
|
|
|
|
/*
|
|
* There is a non-zero chance that we already have children.
|
|
* eg after 'make -f- <<EOF'
|
|
* Since their termination causes a 'Child (pid) not in table' message,
|
|
* Collect the status of any that are already dead, and suppress the
|
|
* error message if there are any undead ones.
|
|
*/
|
|
for (;;) {
|
|
int rval, status;
|
|
rval = waitpid((pid_t) -1, &status, WNOHANG);
|
|
if (rval > 0)
|
|
continue;
|
|
if (rval == 0)
|
|
lurking_children = 1;
|
|
break;
|
|
}
|
|
|
|
Shell_Init();
|
|
|
|
JobCreatePipe(&childExitJob, 3);
|
|
|
|
/* Preallocate enough for the maximum number of jobs. */
|
|
fds = bmake_malloc(sizeof(*fds) *
|
|
(npseudojobs + (size_t)opts.maxJobs) * nfds_per_job());
|
|
jobfds = bmake_malloc(sizeof(*jobfds) *
|
|
(npseudojobs + (size_t)opts.maxJobs) * nfds_per_job());
|
|
|
|
/* These are permanent entries and take slots 0 and 1 */
|
|
watchfd(&tokenWaitJob);
|
|
watchfd(&childExitJob);
|
|
|
|
sigemptyset(&caught_signals);
|
|
/*
|
|
* Install a SIGCHLD handler.
|
|
*/
|
|
(void)bmake_signal(SIGCHLD, JobChildSig);
|
|
sigaddset(&caught_signals, SIGCHLD);
|
|
|
|
#define ADDSIG(s,h) \
|
|
if (bmake_signal(s, SIG_IGN) != SIG_IGN) { \
|
|
sigaddset(&caught_signals, s); \
|
|
(void)bmake_signal(s, h); \
|
|
}
|
|
|
|
/*
|
|
* Catch the four signals that POSIX specifies if they aren't ignored.
|
|
* JobPassSig will take care of calling JobInterrupt if appropriate.
|
|
*/
|
|
ADDSIG(SIGINT, JobPassSig_int)
|
|
ADDSIG(SIGHUP, JobPassSig_term)
|
|
ADDSIG(SIGTERM, JobPassSig_term)
|
|
ADDSIG(SIGQUIT, JobPassSig_term)
|
|
|
|
/*
|
|
* There are additional signals that need to be caught and passed if
|
|
* either the export system wants to be told directly of signals or if
|
|
* we're giving each job its own process group (since then it won't get
|
|
* signals from the terminal driver as we own the terminal)
|
|
*/
|
|
ADDSIG(SIGTSTP, JobPassSig_suspend)
|
|
ADDSIG(SIGTTOU, JobPassSig_suspend)
|
|
ADDSIG(SIGTTIN, JobPassSig_suspend)
|
|
ADDSIG(SIGWINCH, JobCondPassSig)
|
|
ADDSIG(SIGCONT, JobContinueSig)
|
|
#undef ADDSIG
|
|
|
|
(void)Job_RunTarget(".BEGIN", NULL);
|
|
/* Create the .END node now, even though no code in the unit tests
|
|
* depends on it. See also Targ_GetEndNode in Compat_Run. */
|
|
(void)Targ_GetEndNode();
|
|
}
|
|
|
|
static void JobSigReset(void)
|
|
{
|
|
#define DELSIG(s) \
|
|
if (sigismember(&caught_signals, s)) { \
|
|
(void)bmake_signal(s, SIG_DFL); \
|
|
}
|
|
|
|
DELSIG(SIGINT)
|
|
DELSIG(SIGHUP)
|
|
DELSIG(SIGQUIT)
|
|
DELSIG(SIGTERM)
|
|
DELSIG(SIGTSTP)
|
|
DELSIG(SIGTTOU)
|
|
DELSIG(SIGTTIN)
|
|
DELSIG(SIGWINCH)
|
|
DELSIG(SIGCONT)
|
|
#undef DELSIG
|
|
(void)bmake_signal(SIGCHLD, SIG_DFL);
|
|
}
|
|
|
|
/* Find a shell in 'shells' given its name, or return NULL. */
|
|
static Shell *
|
|
FindShellByName(const char *name)
|
|
{
|
|
Shell *sh = shells;
|
|
const Shell *shellsEnd = sh + sizeof shells / sizeof shells[0];
|
|
|
|
for (sh = shells; sh < shellsEnd; sh++) {
|
|
if (strcmp(name, sh->name) == 0)
|
|
return sh;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Job_ParseShell --
|
|
* Parse a shell specification and set up commandShell, shellPath
|
|
* and shellName appropriately.
|
|
*
|
|
* Input:
|
|
* line The shell spec
|
|
*
|
|
* Results:
|
|
* FALSE if the specification was incorrect.
|
|
*
|
|
* Side Effects:
|
|
* commandShell points to a Shell structure (either predefined or
|
|
* created from the shell spec), shellPath is the full path of the
|
|
* shell described by commandShell, while shellName is just the
|
|
* final component of shellPath.
|
|
*
|
|
* Notes:
|
|
* A shell specification consists of a .SHELL target, with dependency
|
|
* operator, followed by a series of blank-separated words. Double
|
|
* quotes can be used to use blanks in words. A backslash escapes
|
|
* anything (most notably a double-quote and a space) and
|
|
* provides the functionality it does in C. Each word consists of
|
|
* keyword and value separated by an equal sign. There should be no
|
|
* unnecessary spaces in the word. The keywords are as follows:
|
|
* name Name of shell.
|
|
* path Location of shell.
|
|
* quiet Command to turn off echoing.
|
|
* echo Command to turn echoing on
|
|
* filter Result of turning off echoing that shouldn't be
|
|
* printed.
|
|
* echoFlag Flag to turn echoing on at the start
|
|
* errFlag Flag to turn error checking on at the start
|
|
* hasErrCtl True if shell has error checking control
|
|
* newline String literal to represent a newline char
|
|
* check Command to turn on error checking if hasErrCtl
|
|
* is TRUE or template of command to echo a command
|
|
* for which error checking is off if hasErrCtl is
|
|
* FALSE.
|
|
* ignore Command to turn off error checking if hasErrCtl
|
|
* is TRUE or template of command to execute a
|
|
* command so as to ignore any errors it returns if
|
|
* hasErrCtl is FALSE.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
Boolean
|
|
Job_ParseShell(char *line)
|
|
{
|
|
Words wordsList;
|
|
char **words;
|
|
char **argv;
|
|
size_t argc;
|
|
char *path;
|
|
Shell newShell;
|
|
Boolean fullSpec = FALSE;
|
|
Shell *sh;
|
|
|
|
pp_skip_whitespace(&line);
|
|
|
|
free(shellArgv);
|
|
|
|
memset(&newShell, 0, sizeof(newShell));
|
|
|
|
/*
|
|
* Parse the specification by keyword
|
|
*/
|
|
wordsList = Str_Words(line, TRUE);
|
|
words = wordsList.words;
|
|
argc = wordsList.len;
|
|
path = wordsList.freeIt;
|
|
if (words == NULL) {
|
|
Error("Unterminated quoted string [%s]", line);
|
|
return FALSE;
|
|
}
|
|
shellArgv = path;
|
|
|
|
for (path = NULL, argv = words; argc != 0; argc--, argv++) {
|
|
char *arg = *argv;
|
|
if (strncmp(arg, "path=", 5) == 0) {
|
|
path = arg + 5;
|
|
} else if (strncmp(arg, "name=", 5) == 0) {
|
|
newShell.name = arg + 5;
|
|
} else {
|
|
if (strncmp(arg, "quiet=", 6) == 0) {
|
|
newShell.echoOff = arg + 6;
|
|
} else if (strncmp(arg, "echo=", 5) == 0) {
|
|
newShell.echoOn = arg + 5;
|
|
} else if (strncmp(arg, "filter=", 7) == 0) {
|
|
newShell.noPrint = arg + 7;
|
|
newShell.noPrintLen = strlen(newShell.noPrint);
|
|
} else if (strncmp(arg, "echoFlag=", 9) == 0) {
|
|
newShell.echo = arg + 9;
|
|
} else if (strncmp(arg, "errFlag=", 8) == 0) {
|
|
newShell.exit = arg + 8;
|
|
} else if (strncmp(arg, "hasErrCtl=", 10) == 0) {
|
|
char c = arg[10];
|
|
newShell.hasErrCtl = c == 'Y' || c == 'y' ||
|
|
c == 'T' || c == 't';
|
|
} else if (strncmp(arg, "newline=", 8) == 0) {
|
|
newShell.newline = arg + 8;
|
|
} else if (strncmp(arg, "check=", 6) == 0) {
|
|
newShell.errOnOrEcho = arg + 6;
|
|
} else if (strncmp(arg, "ignore=", 7) == 0) {
|
|
newShell.errOffOrExecIgnore = arg + 7;
|
|
} else if (strncmp(arg, "errout=", 7) == 0) {
|
|
newShell.errExit = arg + 7;
|
|
} else if (strncmp(arg, "comment=", 8) == 0) {
|
|
newShell.commentChar = arg[8];
|
|
} else {
|
|
Parse_Error(PARSE_FATAL, "Unknown keyword \"%s\"", arg);
|
|
free(words);
|
|
return FALSE;
|
|
}
|
|
fullSpec = TRUE;
|
|
}
|
|
}
|
|
|
|
if (path == NULL) {
|
|
/*
|
|
* If no path was given, the user wants one of the pre-defined shells,
|
|
* yes? So we find the one s/he wants with the help of FindShellByName
|
|
* and set things up the right way. shellPath will be set up by
|
|
* Shell_Init.
|
|
*/
|
|
if (newShell.name == NULL) {
|
|
Parse_Error(PARSE_FATAL, "Neither path nor name specified");
|
|
free(words);
|
|
return FALSE;
|
|
} else {
|
|
if ((sh = FindShellByName(newShell.name)) == NULL) {
|
|
Parse_Error(PARSE_WARNING, "%s: No matching shell",
|
|
newShell.name);
|
|
free(words);
|
|
return FALSE;
|
|
}
|
|
commandShell = sh;
|
|
shellName = newShell.name;
|
|
if (shellPath) {
|
|
/* Shell_Init has already been called! Do it again. */
|
|
free(UNCONST(shellPath));
|
|
shellPath = NULL;
|
|
Shell_Init();
|
|
}
|
|
}
|
|
} else {
|
|
/*
|
|
* The user provided a path. If s/he gave nothing else (fullSpec is
|
|
* FALSE), try and find a matching shell in the ones we know of.
|
|
* Else we just take the specification at its word and copy it
|
|
* to a new location. In either case, we need to record the
|
|
* path the user gave for the shell.
|
|
*/
|
|
shellPath = path;
|
|
path = strrchr(path, '/');
|
|
if (path == NULL) {
|
|
path = UNCONST(shellPath);
|
|
} else {
|
|
path++;
|
|
}
|
|
if (newShell.name != NULL) {
|
|
shellName = newShell.name;
|
|
} else {
|
|
shellName = path;
|
|
}
|
|
if (!fullSpec) {
|
|
if ((sh = FindShellByName(shellName)) == NULL) {
|
|
Parse_Error(PARSE_WARNING, "%s: No matching shell",
|
|
shellName);
|
|
free(words);
|
|
return FALSE;
|
|
}
|
|
commandShell = sh;
|
|
} else {
|
|
commandShell = bmake_malloc(sizeof(Shell));
|
|
*commandShell = newShell;
|
|
}
|
|
/* this will take care of shellErrFlag */
|
|
Shell_Init();
|
|
}
|
|
|
|
if (commandShell->echoOn && commandShell->echoOff) {
|
|
commandShell->hasEchoCtl = TRUE;
|
|
}
|
|
|
|
if (!commandShell->hasErrCtl) {
|
|
if (commandShell->errOnOrEcho == NULL) {
|
|
commandShell->errOnOrEcho = "";
|
|
}
|
|
if (commandShell->errOffOrExecIgnore == NULL) {
|
|
commandShell->errOffOrExecIgnore = "%s\n";
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Do not free up the words themselves, since they might be in use by the
|
|
* shell specification.
|
|
*/
|
|
free(words);
|
|
return TRUE;
|
|
}
|
|
|
|
/* Handle the receipt of an interrupt.
|
|
*
|
|
* All children are killed. Another job will be started if the .INTERRUPT
|
|
* target is defined.
|
|
*
|
|
* Input:
|
|
* runINTERRUPT Non-zero if commands for the .INTERRUPT target
|
|
* should be executed
|
|
* signo signal received
|
|
*/
|
|
static void
|
|
JobInterrupt(int runINTERRUPT, int signo)
|
|
{
|
|
Job *job; /* job descriptor in that element */
|
|
GNode *interrupt; /* the node describing the .INTERRUPT target */
|
|
sigset_t mask;
|
|
GNode *gn;
|
|
|
|
aborting = ABORT_INTERRUPT;
|
|
|
|
JobSigLock(&mask);
|
|
|
|
for (job = job_table; job < job_table_end; job++) {
|
|
if (job->job_state != JOB_ST_RUNNING)
|
|
continue;
|
|
|
|
gn = job->node;
|
|
|
|
JobDeleteTarget(gn);
|
|
if (job->pid) {
|
|
DEBUG2(JOB, "JobInterrupt passing signal %d to child %d.\n",
|
|
signo, job->pid);
|
|
KILLPG(job->pid, signo);
|
|
}
|
|
}
|
|
|
|
JobSigUnlock(&mask);
|
|
|
|
if (runINTERRUPT && !opts.touchFlag) {
|
|
interrupt = Targ_FindNode(".INTERRUPT");
|
|
if (interrupt != NULL) {
|
|
opts.ignoreErrors = FALSE;
|
|
JobRun(interrupt);
|
|
}
|
|
}
|
|
Trace_Log(MAKEINTR, 0);
|
|
exit(signo);
|
|
}
|
|
|
|
/* Do the final processing, i.e. run the commands attached to the .END target.
|
|
*
|
|
* Return the number of errors reported. */
|
|
int
|
|
Job_Finish(void)
|
|
{
|
|
GNode *endNode = Targ_GetEndNode();
|
|
if (!Lst_IsEmpty(endNode->commands) || !Lst_IsEmpty(endNode->children)) {
|
|
if (errors) {
|
|
Error("Errors reported so .END ignored");
|
|
} else {
|
|
JobRun(endNode);
|
|
}
|
|
}
|
|
return errors;
|
|
}
|
|
|
|
/* Clean up any memory used by the jobs module. */
|
|
void
|
|
Job_End(void)
|
|
{
|
|
#ifdef CLEANUP
|
|
free(shellArgv);
|
|
#endif
|
|
}
|
|
|
|
/* Waits for all running jobs to finish and returns.
|
|
* Sets 'aborting' to ABORT_WAIT to prevent other jobs from starting. */
|
|
void
|
|
Job_Wait(void)
|
|
{
|
|
aborting = ABORT_WAIT;
|
|
while (jobTokensRunning != 0) {
|
|
Job_CatchOutput();
|
|
}
|
|
aborting = ABORT_NONE;
|
|
}
|
|
|
|
/* Abort all currently running jobs without handling output or anything.
|
|
* This function is to be called only in the event of a major error.
|
|
* Most definitely NOT to be called from JobInterrupt.
|
|
*
|
|
* All children are killed, not just the firstborn. */
|
|
void
|
|
Job_AbortAll(void)
|
|
{
|
|
Job *job; /* the job descriptor in that element */
|
|
WAIT_T foo;
|
|
|
|
aborting = ABORT_ERROR;
|
|
|
|
if (jobTokensRunning) {
|
|
for (job = job_table; job < job_table_end; job++) {
|
|
if (job->job_state != JOB_ST_RUNNING)
|
|
continue;
|
|
/*
|
|
* kill the child process with increasingly drastic signals to make
|
|
* darn sure it's dead.
|
|
*/
|
|
KILLPG(job->pid, SIGINT);
|
|
KILLPG(job->pid, SIGKILL);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Catch as many children as want to report in at first, then give up
|
|
*/
|
|
while (waitpid((pid_t) -1, &foo, WNOHANG) > 0)
|
|
continue;
|
|
}
|
|
|
|
/* Tries to restart stopped jobs if there are slots available.
|
|
* Called in process context in response to a SIGCONT. */
|
|
static void
|
|
JobRestartJobs(void)
|
|
{
|
|
Job *job;
|
|
|
|
for (job = job_table; job < job_table_end; job++) {
|
|
if (job->job_state == JOB_ST_RUNNING &&
|
|
(make_suspended || job->job_suspended)) {
|
|
DEBUG1(JOB, "Restarting stopped job pid %d.\n", job->pid);
|
|
if (job->job_suspended) {
|
|
(void)printf("*** [%s] Continued\n", job->node->name);
|
|
(void)fflush(stdout);
|
|
}
|
|
job->job_suspended = 0;
|
|
if (KILLPG(job->pid, SIGCONT) != 0 && DEBUG(JOB)) {
|
|
debug_printf("Failed to send SIGCONT to %d\n", job->pid);
|
|
}
|
|
}
|
|
if (job->job_state == JOB_ST_FINISHED)
|
|
/* Job exit deferred after calling waitpid() in a signal handler */
|
|
JobFinish(job, job->exit_status);
|
|
}
|
|
make_suspended = 0;
|
|
}
|
|
|
|
static void
|
|
watchfd(Job *job)
|
|
{
|
|
if (job->inPollfd != NULL)
|
|
Punt("Watching watched job");
|
|
|
|
fds[nfds].fd = job->inPipe;
|
|
fds[nfds].events = POLLIN;
|
|
jobfds[nfds] = job;
|
|
job->inPollfd = &fds[nfds];
|
|
nfds++;
|
|
#if defined(USE_FILEMON) && !defined(USE_FILEMON_DEV)
|
|
if (useMeta) {
|
|
fds[nfds].fd = meta_job_fd(job);
|
|
fds[nfds].events = fds[nfds].fd == -1 ? 0 : POLLIN;
|
|
jobfds[nfds] = job;
|
|
nfds++;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
clearfd(Job *job)
|
|
{
|
|
size_t i;
|
|
if (job->inPollfd == NULL)
|
|
Punt("Unwatching unwatched job");
|
|
i = (size_t)(job->inPollfd - fds);
|
|
nfds--;
|
|
#if defined(USE_FILEMON) && !defined(USE_FILEMON_DEV)
|
|
if (useMeta) {
|
|
/*
|
|
* Sanity check: there should be two fds per job, so the job's
|
|
* pollfd number should be even.
|
|
*/
|
|
assert(nfds_per_job() == 2);
|
|
if (i % 2)
|
|
Punt("odd-numbered fd with meta");
|
|
nfds--;
|
|
}
|
|
#endif
|
|
/*
|
|
* Move last job in table into hole made by dead job.
|
|
*/
|
|
if (nfds != i) {
|
|
fds[i] = fds[nfds];
|
|
jobfds[i] = jobfds[nfds];
|
|
jobfds[i]->inPollfd = &fds[i];
|
|
#if defined(USE_FILEMON) && !defined(USE_FILEMON_DEV)
|
|
if (useMeta) {
|
|
fds[i + 1] = fds[nfds + 1];
|
|
jobfds[i + 1] = jobfds[nfds + 1];
|
|
}
|
|
#endif
|
|
}
|
|
job->inPollfd = NULL;
|
|
}
|
|
|
|
static int
|
|
readyfd(Job *job)
|
|
{
|
|
if (job->inPollfd == NULL)
|
|
Punt("Polling unwatched job");
|
|
return (job->inPollfd->revents & POLLIN) != 0;
|
|
}
|
|
|
|
/* Put a token (back) into the job pipe.
|
|
* This allows a make process to start a build job. */
|
|
static void
|
|
JobTokenAdd(void)
|
|
{
|
|
char tok = JOB_TOKENS[aborting], tok1;
|
|
|
|
if (!Job_error_token && aborting == ABORT_ERROR) {
|
|
if (jobTokensRunning == 0)
|
|
return;
|
|
tok = '+'; /* no error token */
|
|
}
|
|
|
|
/* If we are depositing an error token flush everything else */
|
|
while (tok != '+' && read(tokenWaitJob.inPipe, &tok1, 1) == 1)
|
|
continue;
|
|
|
|
DEBUG3(JOB, "(%d) aborting %d, deposit token %c\n",
|
|
getpid(), aborting, tok);
|
|
while (write(tokenWaitJob.outPipe, &tok, 1) == -1 && errno == EAGAIN)
|
|
continue;
|
|
}
|
|
|
|
/* Prep the job token pipe in the root make process. */
|
|
void
|
|
Job_ServerStart(int max_tokens, int jp_0, int jp_1)
|
|
{
|
|
int i;
|
|
char jobarg[64];
|
|
|
|
if (jp_0 >= 0 && jp_1 >= 0) {
|
|
/* Pipe passed in from parent */
|
|
tokenWaitJob.inPipe = jp_0;
|
|
tokenWaitJob.outPipe = jp_1;
|
|
(void)fcntl(jp_0, F_SETFD, FD_CLOEXEC);
|
|
(void)fcntl(jp_1, F_SETFD, FD_CLOEXEC);
|
|
return;
|
|
}
|
|
|
|
JobCreatePipe(&tokenWaitJob, 15);
|
|
|
|
snprintf(jobarg, sizeof(jobarg), "%d,%d",
|
|
tokenWaitJob.inPipe, tokenWaitJob.outPipe);
|
|
|
|
Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL);
|
|
Var_Append(MAKEFLAGS, jobarg, VAR_GLOBAL);
|
|
|
|
/*
|
|
* Preload the job pipe with one token per job, save the one
|
|
* "extra" token for the primary job.
|
|
*
|
|
* XXX should clip maxJobs against PIPE_BUF -- if max_tokens is
|
|
* larger than the write buffer size of the pipe, we will
|
|
* deadlock here.
|
|
*/
|
|
for (i = 1; i < max_tokens; i++)
|
|
JobTokenAdd();
|
|
}
|
|
|
|
/* Return a withdrawn token to the pool. */
|
|
void
|
|
Job_TokenReturn(void)
|
|
{
|
|
jobTokensRunning--;
|
|
if (jobTokensRunning < 0)
|
|
Punt("token botch");
|
|
if (jobTokensRunning || JOB_TOKENS[aborting] != '+')
|
|
JobTokenAdd();
|
|
}
|
|
|
|
/* Attempt to withdraw a token from the pool.
|
|
*
|
|
* If pool is empty, set wantToken so that we wake up when a token is
|
|
* released.
|
|
*
|
|
* Returns TRUE if a token was withdrawn, and FALSE if the pool is currently
|
|
* empty. */
|
|
Boolean
|
|
Job_TokenWithdraw(void)
|
|
{
|
|
char tok, tok1;
|
|
ssize_t count;
|
|
|
|
wantToken = 0;
|
|
DEBUG3(JOB, "Job_TokenWithdraw(%d): aborting %d, running %d\n",
|
|
getpid(), aborting, jobTokensRunning);
|
|
|
|
if (aborting != ABORT_NONE || (jobTokensRunning >= opts.maxJobs))
|
|
return FALSE;
|
|
|
|
count = read(tokenWaitJob.inPipe, &tok, 1);
|
|
if (count == 0)
|
|
Fatal("eof on job pipe!");
|
|
if (count < 0 && jobTokensRunning != 0) {
|
|
if (errno != EAGAIN) {
|
|
Fatal("job pipe read: %s", strerror(errno));
|
|
}
|
|
DEBUG1(JOB, "(%d) blocked for token\n", getpid());
|
|
return FALSE;
|
|
}
|
|
|
|
if (count == 1 && tok != '+') {
|
|
/* make being abvorted - remove any other job tokens */
|
|
DEBUG2(JOB, "(%d) aborted by token %c\n", getpid(), tok);
|
|
while (read(tokenWaitJob.inPipe, &tok1, 1) == 1)
|
|
continue;
|
|
/* And put the stopper back */
|
|
while (write(tokenWaitJob.outPipe, &tok, 1) == -1 && errno == EAGAIN)
|
|
continue;
|
|
if (dieQuietly(NULL, 1))
|
|
exit(2);
|
|
Fatal("A failure has been detected in another branch of the parallel make");
|
|
}
|
|
|
|
if (count == 1 && jobTokensRunning == 0)
|
|
/* We didn't want the token really */
|
|
while (write(tokenWaitJob.outPipe, &tok, 1) == -1 && errno == EAGAIN)
|
|
continue;
|
|
|
|
jobTokensRunning++;
|
|
DEBUG1(JOB, "(%d) withdrew token\n", getpid());
|
|
return TRUE;
|
|
}
|
|
|
|
/* Run the named target if found. If a filename is specified, then set that
|
|
* to the sources.
|
|
*
|
|
* Exits if the target fails. */
|
|
Boolean
|
|
Job_RunTarget(const char *target, const char *fname) {
|
|
GNode *gn = Targ_FindNode(target);
|
|
if (gn == NULL)
|
|
return FALSE;
|
|
|
|
if (fname)
|
|
Var_Set(ALLSRC, fname, gn);
|
|
|
|
JobRun(gn);
|
|
if (gn->made == ERROR) {
|
|
PrintOnError(gn, "\n\nStop.");
|
|
exit(1);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
#ifdef USE_SELECT
|
|
int
|
|
emul_poll(struct pollfd *fd, int nfd, int timeout)
|
|
{
|
|
fd_set rfds, wfds;
|
|
int i, maxfd, nselect, npoll;
|
|
struct timeval tv, *tvp;
|
|
long usecs;
|
|
|
|
FD_ZERO(&rfds);
|
|
FD_ZERO(&wfds);
|
|
|
|
maxfd = -1;
|
|
for (i = 0; i < nfd; i++) {
|
|
fd[i].revents = 0;
|
|
|
|
if (fd[i].events & POLLIN)
|
|
FD_SET(fd[i].fd, &rfds);
|
|
|
|
if (fd[i].events & POLLOUT)
|
|
FD_SET(fd[i].fd, &wfds);
|
|
|
|
if (fd[i].fd > maxfd)
|
|
maxfd = fd[i].fd;
|
|
}
|
|
|
|
if (maxfd >= FD_SETSIZE) {
|
|
Punt("Ran out of fd_set slots; "
|
|
"recompile with a larger FD_SETSIZE.");
|
|
}
|
|
|
|
if (timeout < 0) {
|
|
tvp = NULL;
|
|
} else {
|
|
usecs = timeout * 1000;
|
|
tv.tv_sec = usecs / 1000000;
|
|
tv.tv_usec = usecs % 1000000;
|
|
tvp = &tv;
|
|
}
|
|
|
|
nselect = select(maxfd + 1, &rfds, &wfds, 0, tvp);
|
|
|
|
if (nselect <= 0)
|
|
return nselect;
|
|
|
|
npoll = 0;
|
|
for (i = 0; i < nfd; i++) {
|
|
if (FD_ISSET(fd[i].fd, &rfds))
|
|
fd[i].revents |= POLLIN;
|
|
|
|
if (FD_ISSET(fd[i].fd, &wfds))
|
|
fd[i].revents |= POLLOUT;
|
|
|
|
if (fd[i].revents)
|
|
npoll++;
|
|
}
|
|
|
|
return npoll;
|
|
}
|
|
#endif /* USE_SELECT */
|