2dab142d47
problems in the process: 1. Quoting should work properly now. In particular, Chet's reported bash make problem has gone away. 2. A lot of memory that just wasn't being free'd after use is now freed. This should cause make to take up a LOT less memory when dealing with archive targets. 3. Give proper credit to Adam de Boor in a number of files. Obtained from: NetBSD (and Adam de Boor)
2669 lines
75 KiB
C
2669 lines
75 KiB
C
/*
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* Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
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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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#ifndef lint
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static char sccsid[] = "@(#)job.c 8.2 (Berkeley) 3/19/94";
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#endif /* not lint */
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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_Make Start the creation of the given target.
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*
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* Job_CatchChildren 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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* Its single argument is TRUE if the function
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* should block waiting for a child to terminate.
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*
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* Job_CatchOutput 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_Init Called to intialize 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 makefile must have been parsed
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* before this function is called.
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*
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* Job_Full Return TRUE if the job table is filled.
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*
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* Job_Empty Return TRUE if the job table is completely
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* empty.
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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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* FAILURE if the spec was incorrect.
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*
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* Job_End 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, as it were.
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*
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* Job_CheckCommands 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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#include <sys/types.h>
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#include <sys/signal.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 <sys/wait.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <signal.h>
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#include "make.h"
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#include "hash.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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extern int errno;
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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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static int aborting = 0; /* why is the make aborting? */
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#define ABORT_ERROR 1 /* Because of an error */
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#define ABORT_INTERRUPT 2 /* Because it was interrupted */
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#define ABORT_WAIT 3 /* Waiting for jobs to finish */
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|
|
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/*
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* post-make command processing. The node postCommands is really just the
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* .END target but we keep it around to avoid having to search for it
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* all the time.
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*/
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static GNode *postCommands; /* node containing commands to execute when
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* everything else is done */
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static int numCommands; /* The number of commands actually printed
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* for a target. Should this number be
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* 0, no shell will be executed. */
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|
|
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/*
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* Return values from JobStart.
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*/
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#define JOB_RUNNING 0 /* Job is running */
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#define JOB_ERROR 1 /* Error in starting the job */
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#define JOB_FINISHED 2 /* The job is already finished */
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#define JOB_STOPPED 3 /* The job is stopped */
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/*
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* tfile is the name of a file into which all shell commands are put. It is
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* used over by removing it before the child shell is executed. The XXXXX in
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* the string are replaced by the pid of the make process in a 5-character
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* field with leading zeroes.
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*/
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static char tfile[] = TMPPAT;
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|
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/*
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* Descriptions for various shells.
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*/
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static Shell shells[] = {
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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",
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TRUE, "unset verbose", "set verbose", "unset verbose", 10,
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FALSE, "echo \"%s\"\n", "csh -c \"%s || exit 0\"",
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"v", "e",
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},
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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",
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TRUE, "set -", "set -v", "set -", 5,
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FALSE, "echo \"%s\"\n", "sh -c '%s || exit 0'\n",
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"v", "e",
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},
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/*
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* UNKNOWN.
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*/
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{
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(char *)0,
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FALSE, (char *)0, (char *)0, (char *)0, 0,
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FALSE, (char *)0, (char *)0,
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(char *)0, (char *)0,
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}
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};
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static Shell *commandShell = &shells[DEFSHELL];/* this is the shell to
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* which we pass all
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* commands in the Makefile.
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* It is set by the
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* Job_ParseShell function */
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static char *shellPath = (char *) NULL, /* full pathname of
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* executable image */
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*shellName; /* last component of shell */
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|
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static int maxJobs; /* The most children we can run at once */
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static int maxLocal; /* The most local ones we can have */
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int nJobs; /* The number of children currently running */
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int nLocal; /* The number of local children */
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Lst jobs; /* The structures that describe them */
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Boolean jobFull; /* Flag to tell when the job table is full. It
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* is set TRUE when (1) the total number of
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* running jobs equals the maximum allowed or
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* (2) a job can only be run locally, but
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* nLocal equals maxLocal */
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#ifndef RMT_WILL_WATCH
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static fd_set outputs; /* Set of descriptors of pipes connected to
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* the output channels of children */
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#endif
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GNode *lastNode; /* The node for which output was most recently
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* produced. */
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char *targFmt; /* Format string to use to head output from a
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* job when it's not the most-recent job heard
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* from */
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#define TARG_FMT "--- %s ---\n" /* Default format */
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/*
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* When JobStart attempts to run a job remotely but can't, and isn't allowed
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* to run the job locally, or when Job_CatchChildren detects a job that has
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* been migrated home, the job is placed on the stoppedJobs queue to be run
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* when the next job finishes.
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*/
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Lst stoppedJobs; /* Lst of Job structures describing
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* jobs that were stopped due to concurrency
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* limits or migration home */
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#if defined(USE_PGRP) && defined(SYSV)
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#define KILL(pid,sig) killpg (-(pid),(sig))
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#else
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# if defined(USE_PGRP)
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#define KILL(pid,sig) killpg ((pid),(sig))
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# else
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#define KILL(pid,sig) kill ((pid),(sig))
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# endif
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#endif
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static int JobCondPassSig __P((ClientData, ClientData));
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static void JobPassSig __P((int));
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static int JobCmpPid __P((ClientData, ClientData));
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static int JobPrintCommand __P((ClientData, ClientData));
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static int JobSaveCommand __P((ClientData, ClientData));
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static void JobFinish __P((Job *, union wait));
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static void JobExec __P((Job *, char **));
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static void JobMakeArgv __P((Job *, char **));
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static void JobRestart __P((Job *));
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static int JobStart __P((GNode *, int, Job *));
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static void JobDoOutput __P((Job *, Boolean));
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static Shell *JobMatchShell __P((char *));
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static void JobInterrupt __P((int));
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/*-
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*-----------------------------------------------------------------------
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* JobCondPassSig --
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* Pass a signal to a job if the job is remote or if USE_PGRP
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* is defined.
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*
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* Results:
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* === 0
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*
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* Side Effects:
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* None, except the job may bite it.
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*
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*-----------------------------------------------------------------------
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*/
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static int
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JobCondPassSig(jobp, signop)
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ClientData jobp; /* Job to biff */
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ClientData signop; /* Signal to send it */
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{
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Job *job = (Job *) jobp;
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int signo = *(int *) signop;
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#ifdef RMT_WANTS_SIGNALS
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if (job->flags & JOB_REMOTE) {
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(void)Rmt_Signal(job, signo);
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} else {
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KILL(job->pid, signo);
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}
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#else
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/*
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* Assume that sending the signal to job->pid will signal any remote
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* job as well.
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*/
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KILL(job->pid, signo);
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#endif
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return(0);
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}
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/*-
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*-----------------------------------------------------------------------
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* JobPassSig --
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* Pass a signal on to all remote jobs and to all local jobs if
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* USE_PGRP is defined, then die ourselves.
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*
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* Results:
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* None.
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*
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* Side Effects:
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* We die by the same signal.
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*
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*-----------------------------------------------------------------------
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*/
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static void
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JobPassSig(signo)
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int signo; /* The signal number we've received */
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{
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int mask;
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Lst_ForEach(jobs, JobCondPassSig, (ClientData)(long)signo);
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|
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/*
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* Deal with proper cleanup based on the signal received. We only run
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* the .INTERRUPT target if the signal was in fact an interrupt. The other
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* three termination signals are more of a "get out *now*" command.
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*/
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if (signo == SIGINT) {
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JobInterrupt(TRUE);
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} else if ((signo == SIGHUP) || (signo == SIGTERM) || (signo == SIGQUIT)) {
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JobInterrupt(FALSE);
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}
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|
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/*
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* Leave gracefully if SIGQUIT, rather than core dumping.
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*/
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if (signo == SIGQUIT) {
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Finish(0);
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}
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/*
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* Send ourselves the signal now we've given the message to everyone else.
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* Note we block everything else possible while we're getting the signal.
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* This ensures that all our jobs get continued when we wake up before
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* we take any other signal.
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*/
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mask = sigblock(0);
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(void) sigsetmask(~0 & ~(1 << (signo-1)));
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signal(signo, SIG_DFL);
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kill(getpid(), signo);
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signo = SIGCONT;
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Lst_ForEach(jobs, JobCondPassSig, (ClientData) &signo);
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sigsetmask(mask);
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signal(signo, JobPassSig);
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}
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|
|
/*-
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*-----------------------------------------------------------------------
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* JobCmpPid --
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* Compare the pid of the job with the given pid and return 0 if they
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* are equal. This function is called from Job_CatchChildren via
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* Lst_Find to find the job descriptor of the finished job.
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*
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* Results:
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* 0 if the pid's match
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*
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* Side Effects:
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* None
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*-----------------------------------------------------------------------
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*/
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static int
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JobCmpPid (job, pid)
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ClientData job; /* job to examine */
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ClientData pid; /* process id desired */
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{
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return ( *(int *) pid - ((Job *) job)->pid);
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}
|
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|
|
/*-
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*-----------------------------------------------------------------------
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* JobPrintCommand --
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* Put out another command for the given job. If the command starts
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* with an @ or a - we process it specially. In the former case,
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* so long as the -s and -n flags weren't given to make, we stick
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* a shell-specific echoOff command in the script. In the latter,
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* we ignore errors for the entire job, unless the shell has error
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* control.
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* If the command is just "..." we take all future commands for this
|
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* job to be commands to be executed once the entire graph has been
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* made and return non-zero to signal that the end of the commands
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* was reached. These commands are later attached to the postCommands
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* node and executed by Job_End when all things are done.
|
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* This function is called from JobStart via Lst_ForEach.
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*
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* Results:
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* Always 0, unless the command was "..."
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*
|
|
* Side Effects:
|
|
* If the command begins with a '-' and the shell has no error control,
|
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* the JOB_IGNERR flag is set in the job descriptor.
|
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* If the command is "..." and we're not ignoring such things,
|
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* tailCmds is set to the successor node of the cmd.
|
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* numCommands is incremented if the command is actually printed.
|
|
*-----------------------------------------------------------------------
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*/
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static int
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JobPrintCommand (cmdp, jobp)
|
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ClientData cmdp; /* command string to print */
|
|
ClientData jobp; /* job for which to print it */
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{
|
|
Boolean noSpecials; /* true if we shouldn't worry about
|
|
* inserting special commands into
|
|
* the input stream. */
|
|
Boolean shutUp = FALSE; /* true if we put a no echo command
|
|
* into the command file */
|
|
Boolean errOff = FALSE; /* true if we turned error checking
|
|
* off before printing the command
|
|
* and need to turn it back on */
|
|
char *cmdTemplate; /* Template to use when printing the
|
|
* command */
|
|
char *cmdStart; /* Start of expanded command */
|
|
LstNode cmdNode; /* Node for replacing the command */
|
|
char *cmd = (char *) cmdp;
|
|
Job *job = (Job *) jobp;
|
|
|
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noSpecials = (noExecute && ! (job->node->type & OP_MAKE));
|
|
|
|
if (strcmp (cmd, "...") == 0) {
|
|
job->node->type |= OP_SAVE_CMDS;
|
|
if ((job->flags & JOB_IGNDOTS) == 0) {
|
|
job->tailCmds = Lst_Succ (Lst_Member (job->node->commands,
|
|
(ClientData)cmd));
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
#define DBPRINTF(fmt, arg) if (DEBUG(JOB)) printf (fmt, arg); fprintf (job->cmdFILE, fmt, arg)
|
|
|
|
numCommands += 1;
|
|
|
|
/*
|
|
* For debugging, we replace each command with the result of expanding
|
|
* the variables in the command.
|
|
*/
|
|
cmdNode = Lst_Member (job->node->commands, (ClientData)cmd);
|
|
cmdStart = cmd = Var_Subst (NULL, cmd, job->node, FALSE);
|
|
Lst_Replace (cmdNode, (ClientData)cmdStart);
|
|
|
|
cmdTemplate = "%s\n";
|
|
|
|
/*
|
|
* Check for leading @' and -'s to control echoing and error checking.
|
|
*/
|
|
while (*cmd == '@' || *cmd == '-') {
|
|
if (*cmd == '@') {
|
|
shutUp = TRUE;
|
|
} else {
|
|
errOff = TRUE;
|
|
}
|
|
cmd++;
|
|
}
|
|
|
|
while (isspace((unsigned char) *cmd))
|
|
cmd++;
|
|
|
|
if (shutUp) {
|
|
if (! (job->flags & JOB_SILENT) && !noSpecials &&
|
|
commandShell->hasEchoCtl) {
|
|
DBPRINTF ("%s\n", commandShell->echoOff);
|
|
} else {
|
|
shutUp = FALSE;
|
|
}
|
|
}
|
|
|
|
if (errOff) {
|
|
if ( ! (job->flags & JOB_IGNERR) && !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->ignErr);
|
|
DBPRINTF ("%s\n", commandShell->echoOn);
|
|
} else {
|
|
DBPRINTF ("%s\n", commandShell->ignErr);
|
|
}
|
|
} else if (commandShell->ignErr &&
|
|
(*commandShell->ignErr != '\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
|
|
* errCheck 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.
|
|
*/
|
|
if (! (job->flags & JOB_SILENT) && !shutUp &&
|
|
commandShell->hasEchoCtl) {
|
|
DBPRINTF ("%s\n", commandShell->echoOff);
|
|
DBPRINTF (commandShell->errCheck, cmd);
|
|
shutUp = TRUE;
|
|
}
|
|
cmdTemplate = commandShell->ignErr;
|
|
/*
|
|
* The error ignoration (hee hee) is already taken care
|
|
* of by the ignErr template, so pretend error checking
|
|
* is still on.
|
|
*/
|
|
errOff = FALSE;
|
|
} else {
|
|
errOff = FALSE;
|
|
}
|
|
} else {
|
|
errOff = FALSE;
|
|
}
|
|
}
|
|
|
|
DBPRINTF (cmdTemplate, cmd);
|
|
|
|
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->errCheck);
|
|
}
|
|
if (shutUp) {
|
|
DBPRINTF ("%s\n", commandShell->echoOn);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* JobSaveCommand --
|
|
* Save a command to be executed when everything else is done.
|
|
* Callback function for JobFinish...
|
|
*
|
|
* Results:
|
|
* Always returns 0
|
|
*
|
|
* Side Effects:
|
|
* The command is tacked onto the end of postCommands's commands list.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static int
|
|
JobSaveCommand (cmd, gn)
|
|
ClientData cmd;
|
|
ClientData gn;
|
|
{
|
|
cmd = (ClientData) Var_Subst (NULL, (char *) cmd, (GNode *) gn, FALSE);
|
|
(void)Lst_AtEnd (postCommands->commands, cmd);
|
|
return (0);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* 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.
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* Some nodes may be put on the toBeMade queue.
|
|
* 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.
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
/*ARGSUSED*/
|
|
static void
|
|
JobFinish (job, status)
|
|
Job *job; /* job to finish */
|
|
union wait status; /* sub-why job went away */
|
|
{
|
|
Boolean done;
|
|
|
|
if ((WIFEXITED(status) &&
|
|
(((status.w_retcode != 0) && !(job->flags & JOB_IGNERR)))) ||
|
|
(WIFSIGNALED(status) && (status.w_termsig != SIGCONT)))
|
|
{
|
|
/*
|
|
* 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...
|
|
*/
|
|
if (usePipes) {
|
|
#ifdef RMT_WILL_WATCH
|
|
Rmt_Ignore(job->inPipe);
|
|
#else
|
|
FD_CLR(job->inPipe, &outputs);
|
|
#endif /* RMT_WILL_WATCH */
|
|
if (job->outPipe != job->inPipe) {
|
|
(void)close (job->outPipe);
|
|
}
|
|
JobDoOutput (job, TRUE);
|
|
(void)close (job->inPipe);
|
|
} else {
|
|
(void)close (job->outFd);
|
|
JobDoOutput (job, TRUE);
|
|
}
|
|
|
|
if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
|
|
fclose(job->cmdFILE);
|
|
}
|
|
done = TRUE;
|
|
} else if (WIFEXITED(status) && status.w_retcode != 0) {
|
|
/*
|
|
* 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. Note we don't
|
|
* want to close down any of the streams until we know we're at the
|
|
* end.
|
|
*/
|
|
done = TRUE;
|
|
} else {
|
|
/*
|
|
* No need to close things down or anything.
|
|
*/
|
|
done = FALSE;
|
|
}
|
|
|
|
if (done ||
|
|
WIFSTOPPED(status) ||
|
|
(WIFSIGNALED(status) && (status.w_termsig == SIGCONT)) ||
|
|
DEBUG(JOB))
|
|
{
|
|
FILE *out;
|
|
|
|
if (!usePipes && (job->flags & JOB_IGNERR)) {
|
|
/*
|
|
* If output is going to a file and this job is ignoring
|
|
* errors, arrange to have the exit status sent to the
|
|
* output file as well.
|
|
*/
|
|
out = fdopen (job->outFd, "w");
|
|
} else {
|
|
out = stdout;
|
|
}
|
|
|
|
if (WIFEXITED(status)) {
|
|
if (status.w_retcode != 0) {
|
|
if (usePipes && job->node != lastNode) {
|
|
fprintf (out, targFmt, job->node->name);
|
|
lastNode = job->node;
|
|
}
|
|
fprintf (out, "*** Error code %d%s\n", status.w_retcode,
|
|
(job->flags & JOB_IGNERR) ? " (ignored)" : "");
|
|
|
|
if (job->flags & JOB_IGNERR) {
|
|
status.w_status = 0;
|
|
}
|
|
} else if (DEBUG(JOB)) {
|
|
if (usePipes && job->node != lastNode) {
|
|
fprintf (out, targFmt, job->node->name);
|
|
lastNode = job->node;
|
|
}
|
|
fprintf (out, "*** Completed successfully\n");
|
|
}
|
|
} else if (WIFSTOPPED(status)) {
|
|
if (usePipes && job->node != lastNode) {
|
|
fprintf (out, targFmt, job->node->name);
|
|
lastNode = job->node;
|
|
}
|
|
if (! (job->flags & JOB_REMIGRATE)) {
|
|
fprintf (out, "*** Stopped -- signal %d\n", status.w_stopsig);
|
|
}
|
|
job->flags |= JOB_RESUME;
|
|
(void)Lst_AtEnd(stoppedJobs, (ClientData)job);
|
|
fflush(out);
|
|
return;
|
|
} else if (status.w_termsig == SIGCONT) {
|
|
/*
|
|
* If the beastie has continued, shift the Job from the stopped
|
|
* list to the running one (or re-stop it if concurrency is
|
|
* exceeded) and go and get another child.
|
|
*/
|
|
if (job->flags & (JOB_RESUME|JOB_REMIGRATE|JOB_RESTART)) {
|
|
if (usePipes && job->node != lastNode) {
|
|
fprintf (out, targFmt, job->node->name);
|
|
lastNode = job->node;
|
|
}
|
|
fprintf (out, "*** Continued\n");
|
|
}
|
|
if (! (job->flags & JOB_CONTINUING)) {
|
|
JobRestart(job);
|
|
} else {
|
|
Lst_AtEnd(jobs, (ClientData)job);
|
|
nJobs += 1;
|
|
if (! (job->flags & JOB_REMOTE)) {
|
|
nLocal += 1;
|
|
}
|
|
if (nJobs == maxJobs) {
|
|
jobFull = TRUE;
|
|
if (DEBUG(JOB)) {
|
|
printf("Job queue is full.\n");
|
|
}
|
|
}
|
|
}
|
|
fflush(out);
|
|
return;
|
|
} else {
|
|
if (usePipes && job->node != lastNode) {
|
|
fprintf (out, targFmt, job->node->name);
|
|
lastNode = job->node;
|
|
}
|
|
fprintf (out, "*** Signal %d\n", status.w_termsig);
|
|
}
|
|
|
|
fflush (out);
|
|
}
|
|
|
|
/*
|
|
* Now handle the -B-mode stuff. If the beast still isn't finished,
|
|
* try and restart the job on the next command. If JobStart says it's
|
|
* ok, it's ok. If there's an error, this puppy is done.
|
|
*/
|
|
if ((status.w_status == 0) &&
|
|
!Lst_IsAtEnd (job->node->commands))
|
|
{
|
|
switch (JobStart (job->node,
|
|
job->flags & JOB_IGNDOTS,
|
|
job))
|
|
{
|
|
case JOB_RUNNING:
|
|
done = FALSE;
|
|
break;
|
|
case JOB_ERROR:
|
|
done = TRUE;
|
|
status.w_retcode = 1;
|
|
break;
|
|
case JOB_FINISHED:
|
|
/*
|
|
* If we got back a JOB_FINISHED code, JobStart has already
|
|
* called Make_Update and freed the job descriptor. We set
|
|
* done to false here to avoid fake cycles and double frees.
|
|
* JobStart needs to do the update so we can proceed up the
|
|
* graph when given the -n flag..
|
|
*/
|
|
done = FALSE;
|
|
break;
|
|
}
|
|
} else {
|
|
done = TRUE;
|
|
}
|
|
|
|
|
|
if (done &&
|
|
(aborting != ABORT_ERROR) &&
|
|
(aborting != ABORT_INTERRUPT) &&
|
|
(status.w_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. In addition, any saved commands for the node are placed
|
|
* on the .END target.
|
|
*/
|
|
if (job->tailCmds != NILLNODE) {
|
|
Lst_ForEachFrom (job->node->commands, job->tailCmds,
|
|
JobSaveCommand,
|
|
(ClientData)job->node);
|
|
}
|
|
job->node->made = MADE;
|
|
Make_Update (job->node);
|
|
free((Address)job);
|
|
} else if (status.w_status) {
|
|
errors += 1;
|
|
free((Address)job);
|
|
}
|
|
|
|
while (!errors && !jobFull && !Lst_IsEmpty(stoppedJobs)) {
|
|
JobRestart((Job *)Lst_DeQueue(stoppedJobs));
|
|
}
|
|
|
|
/*
|
|
* Set aborting if any error.
|
|
*/
|
|
if (errors && !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 ((aborting == ABORT_ERROR) && Job_Empty()) {
|
|
/*
|
|
* If we are aborting and the job table is now empty, we finish.
|
|
*/
|
|
(void) unlink (tfile);
|
|
Finish (errors);
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Job_Touch --
|
|
* Touch the given target. Called by JobStart when the -t flag was
|
|
* given
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* The data modification of the file is changed. In addition, if the
|
|
* file did not exist, it is created.
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Job_Touch (gn, silent)
|
|
GNode *gn; /* the node of the file to touch */
|
|
Boolean silent; /* TRUE if should not print messages */
|
|
{
|
|
int streamID; /* ID of stream opened to do the touch */
|
|
struct timeval times[2]; /* Times for utimes() call */
|
|
|
|
if (gn->type & (OP_JOIN|OP_USE|OP_EXEC|OP_OPTIONAL)) {
|
|
/*
|
|
* .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual" targets
|
|
* and, as such, shouldn't really be created.
|
|
*/
|
|
return;
|
|
}
|
|
|
|
if (!silent) {
|
|
printf ("touch %s\n", gn->name);
|
|
}
|
|
|
|
if (noExecute) {
|
|
return;
|
|
}
|
|
|
|
if (gn->type & OP_ARCHV) {
|
|
Arch_Touch (gn);
|
|
} else if (gn->type & OP_LIB) {
|
|
Arch_TouchLib (gn);
|
|
} else {
|
|
char *file = gn->path ? gn->path : gn->name;
|
|
|
|
times[0].tv_sec = times[1].tv_sec = now;
|
|
times[0].tv_usec = times[1].tv_usec = 0;
|
|
if (utimes(file, times) < 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) {
|
|
lseek(streamID, 0L, L_SET);
|
|
write(streamID, &c, 1);
|
|
}
|
|
|
|
(void)close (streamID);
|
|
} else
|
|
printf("*** couldn't touch %s: %s", file, strerror(errno));
|
|
}
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Job_CheckCommands --
|
|
* Make sure the given node has all the commands it needs.
|
|
*
|
|
* Results:
|
|
* TRUE if the commands list is/was ok.
|
|
*
|
|
* Side Effects:
|
|
* The node will have commands from the .DEFAULT rule added to it
|
|
* if it needs them.
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
Boolean
|
|
Job_CheckCommands (gn, abortProc)
|
|
GNode *gn; /* The target whose commands need
|
|
* verifying */
|
|
void (*abortProc) __P((char *, ...));
|
|
/* Function to abort with message */
|
|
{
|
|
if (OP_NOP(gn->type) && Lst_IsEmpty (gn->commands) &&
|
|
(gn->type & OP_LIB) == 0) {
|
|
/*
|
|
* No commands. Look for .DEFAULT rule from which we might infer
|
|
* commands
|
|
*/
|
|
if ((DEFAULT != NILGNODE) && !Lst_IsEmpty(DEFAULT->commands)) {
|
|
char *p1;
|
|
/*
|
|
* 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, Var_Value (TARGET, gn, &p1), gn);
|
|
if (p1)
|
|
free(p1);
|
|
} else if (Dir_MTime (gn) == 0) {
|
|
/*
|
|
* 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->type & OP_OPTIONAL) {
|
|
printf ("make: don't know how to make %s (ignored)\n",
|
|
gn->name);
|
|
} else if (keepgoing) {
|
|
printf ("make: don't know how to make %s (continuing)\n",
|
|
gn->name);
|
|
return (FALSE);
|
|
} else {
|
|
(*abortProc) ("make: don't know how to make %s. Stop",
|
|
gn->name);
|
|
return(FALSE);
|
|
}
|
|
}
|
|
}
|
|
return (TRUE);
|
|
}
|
|
#ifdef RMT_WILL_WATCH
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* JobLocalInput --
|
|
* Handle a pipe becoming readable. Callback function for Rmt_Watch
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* JobDoOutput is called.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
/*ARGSUSED*/
|
|
static void
|
|
JobLocalInput(stream, job)
|
|
int stream; /* Stream that's ready (ignored) */
|
|
Job *job; /* Job to which the stream belongs */
|
|
{
|
|
JobDoOutput(job, FALSE);
|
|
}
|
|
#endif /* RMT_WILL_WATCH */
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* JobExec --
|
|
* Execute the shell for the given job. Called from JobStart and
|
|
* JobRestart.
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side Effects:
|
|
* A shell is executed, outputs is altered and the Job structure added
|
|
* to the job table.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
JobExec(job, argv)
|
|
Job *job; /* Job to execute */
|
|
char **argv;
|
|
{
|
|
int cpid; /* ID of new child */
|
|
|
|
if (DEBUG(JOB)) {
|
|
int i;
|
|
|
|
printf("Running %s %sly\n", job->node->name,
|
|
job->flags&JOB_REMOTE?"remote":"local");
|
|
printf("\tCommand: ");
|
|
for (i = 0; argv[i] != (char *)NULL; i++) {
|
|
printf("%s ", argv[i]);
|
|
}
|
|
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_FIRST) &&
|
|
!(job->flags & JOB_SILENT))
|
|
{
|
|
printf(targFmt, job->node->name);
|
|
lastNode = job->node;
|
|
}
|
|
|
|
#ifdef RMT_NO_EXEC
|
|
if (job->flags & JOB_REMOTE) {
|
|
goto jobExecFinish;
|
|
}
|
|
#endif /* RMT_NO_EXEC */
|
|
|
|
if ((cpid = vfork()) == -1) {
|
|
Punt ("Cannot fork");
|
|
} else if (cpid == 0) {
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
(void) dup2(fileno(job->cmdFILE), 0);
|
|
fcntl(0, F_SETFD, 0);
|
|
lseek(0, 0, L_SET);
|
|
|
|
if (usePipes) {
|
|
/*
|
|
* Set up the child's output to be routed through the pipe
|
|
* we've created for it.
|
|
*/
|
|
(void) dup2 (job->outPipe, 1);
|
|
} else {
|
|
/*
|
|
* We're capturing output in a file, so we duplicate the
|
|
* descriptor to the temporary file into the standard
|
|
* output.
|
|
*/
|
|
(void) dup2 (job->outFd, 1);
|
|
}
|
|
/*
|
|
* 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.
|
|
*/
|
|
fcntl(1, F_SETFD, 0);
|
|
(void) dup2 (1, 2);
|
|
|
|
#ifdef USE_PGRP
|
|
/*
|
|
* 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.
|
|
*/
|
|
|
|
(void) setpgrp(0, getpid());
|
|
#endif USE_PGRP
|
|
|
|
(void) execv (shellPath, argv);
|
|
(void) write (2, "Could not execute shell\n",
|
|
sizeof ("Could not execute shell"));
|
|
_exit (1);
|
|
} else {
|
|
job->pid = cpid;
|
|
|
|
if (usePipes && (job->flags & JOB_FIRST) ) {
|
|
/*
|
|
* The first time a job is run for a node, we set the current
|
|
* position in the buffer to the beginning and mark another
|
|
* stream to watch in the outputs mask
|
|
*/
|
|
job->curPos = 0;
|
|
|
|
#ifdef RMT_WILL_WATCH
|
|
Rmt_Watch(job->inPipe, JobLocalInput, job);
|
|
#else
|
|
FD_SET(job->inPipe, &outputs);
|
|
#endif /* RMT_WILL_WATCH */
|
|
}
|
|
|
|
if (job->flags & JOB_REMOTE) {
|
|
job->rmtID = 0;
|
|
} else {
|
|
nLocal += 1;
|
|
/*
|
|
* XXX: Used to not happen if CUSTOMS. Why?
|
|
*/
|
|
if (job->cmdFILE != stdout) {
|
|
fclose(job->cmdFILE);
|
|
job->cmdFILE = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef RMT_NO_EXEC
|
|
jobExecFinish:
|
|
#endif
|
|
/*
|
|
* Now the job is actually running, add it to the table.
|
|
*/
|
|
nJobs += 1;
|
|
(void)Lst_AtEnd (jobs, (ClientData)job);
|
|
if (nJobs == maxJobs) {
|
|
jobFull = TRUE;
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* JobMakeArgv --
|
|
* Create the argv needed to execute the shell for a given job.
|
|
*
|
|
*
|
|
* Results:
|
|
*
|
|
* Side Effects:
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
JobMakeArgv(job, argv)
|
|
Job *job;
|
|
char **argv;
|
|
{
|
|
int argc;
|
|
static char args[10]; /* For merged arguments */
|
|
|
|
argv[0] = shellName;
|
|
argc = 1;
|
|
|
|
if ((commandShell->exit && (*commandShell->exit != '-')) ||
|
|
(commandShell->echo && (*commandShell->echo != '-')))
|
|
{
|
|
/*
|
|
* 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)sprintf(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] = commandShell->exit;
|
|
argc++;
|
|
}
|
|
if (!(job->flags & JOB_SILENT) && commandShell->echo) {
|
|
argv[argc] = commandShell->echo;
|
|
argc++;
|
|
}
|
|
}
|
|
argv[argc] = (char *)NULL;
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* JobRestart --
|
|
* Restart a job that stopped for some reason.
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side Effects:
|
|
* jobFull will be set if the job couldn't be run.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
JobRestart(job)
|
|
Job *job; /* Job to restart */
|
|
{
|
|
if (job->flags & JOB_REMIGRATE) {
|
|
if (DEBUG(JOB)) {
|
|
printf("Remigrating %x\n", job->pid);
|
|
}
|
|
if (nLocal != maxLocal) {
|
|
/*
|
|
* Job cannot be remigrated, but there's room on the local
|
|
* machine, so resume the job and note that another
|
|
* local job has started.
|
|
*/
|
|
if (DEBUG(JOB)) {
|
|
printf("resuming on local machine\n");
|
|
}
|
|
KILL(job->pid, SIGCONT);
|
|
nLocal +=1;
|
|
job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
|
|
} else {
|
|
/*
|
|
* Job cannot be restarted. Mark the table as full and
|
|
* place the job back on the list of stopped jobs.
|
|
*/
|
|
if (DEBUG(JOB)) {
|
|
printf("holding\n");
|
|
}
|
|
(void)Lst_AtFront(stoppedJobs, (ClientData)job);
|
|
jobFull = TRUE;
|
|
if (DEBUG(JOB)) {
|
|
printf("Job queue is full.\n");
|
|
}
|
|
return;
|
|
}
|
|
|
|
(void)Lst_AtEnd(jobs, (ClientData)job);
|
|
nJobs += 1;
|
|
if (nJobs == maxJobs) {
|
|
jobFull = TRUE;
|
|
if (DEBUG(JOB)) {
|
|
printf("Job queue is full.\n");
|
|
}
|
|
}
|
|
} else if (job->flags & JOB_RESTART) {
|
|
/*
|
|
* Set up the control arguments to the shell. This is based on the
|
|
* flags set earlier for this job. If the JOB_IGNERR flag is clear,
|
|
* the 'exit' flag of the commandShell is used to cause it to exit
|
|
* upon receiving an error. If the JOB_SILENT flag is clear, the
|
|
* 'echo' flag of the commandShell is used to get it to start echoing
|
|
* as soon as it starts processing commands.
|
|
*/
|
|
char *argv[4];
|
|
|
|
JobMakeArgv(job, argv);
|
|
|
|
if (DEBUG(JOB)) {
|
|
printf("Restarting %s...", job->node->name);
|
|
}
|
|
if (((nLocal >= maxLocal) && ! (job->flags & JOB_SPECIAL))) {
|
|
/*
|
|
* Can't be exported and not allowed to run locally -- put it
|
|
* back on the hold queue and mark the table full
|
|
*/
|
|
if (DEBUG(JOB)) {
|
|
printf("holding\n");
|
|
}
|
|
(void)Lst_AtFront(stoppedJobs, (ClientData)job);
|
|
jobFull = TRUE;
|
|
if (DEBUG(JOB)) {
|
|
printf("Job queue is full.\n");
|
|
}
|
|
return;
|
|
} else {
|
|
/*
|
|
* Job may be run locally.
|
|
*/
|
|
if (DEBUG(JOB)) {
|
|
printf("running locally\n");
|
|
}
|
|
job->flags &= ~JOB_REMOTE;
|
|
}
|
|
JobExec(job, argv);
|
|
} else {
|
|
/*
|
|
* The job has stopped and needs to be restarted. Why it stopped,
|
|
* we don't know...
|
|
*/
|
|
if (DEBUG(JOB)) {
|
|
printf("Resuming %s...", job->node->name);
|
|
}
|
|
if (((job->flags & JOB_REMOTE) ||
|
|
(nLocal < maxLocal) ||
|
|
(((job->flags & JOB_SPECIAL)) &&
|
|
(maxLocal == 0))) &&
|
|
(nJobs != maxJobs))
|
|
{
|
|
/*
|
|
* If the job is remote, it's ok to resume it as long as the
|
|
* maximum concurrency won't be exceeded. If it's local and
|
|
* we haven't reached the local concurrency limit already (or the
|
|
* job must be run locally and maxLocal is 0), it's also ok to
|
|
* resume it.
|
|
*/
|
|
Boolean error;
|
|
extern int errno;
|
|
union wait status;
|
|
|
|
#ifdef RMT_WANTS_SIGNALS
|
|
if (job->flags & JOB_REMOTE) {
|
|
error = !Rmt_Signal(job, SIGCONT);
|
|
} else
|
|
#endif /* RMT_WANTS_SIGNALS */
|
|
error = (KILL(job->pid, SIGCONT) != 0);
|
|
|
|
if (!error) {
|
|
/*
|
|
* Make sure the user knows we've continued the beast and
|
|
* actually put the thing in the job table.
|
|
*/
|
|
job->flags |= JOB_CONTINUING;
|
|
status.w_termsig = SIGCONT;
|
|
JobFinish(job, status);
|
|
|
|
job->flags &= ~(JOB_RESUME|JOB_CONTINUING);
|
|
if (DEBUG(JOB)) {
|
|
printf("done\n");
|
|
}
|
|
} else {
|
|
Error("couldn't resume %s: %s",
|
|
job->node->name, strerror(errno));
|
|
status.w_status = 0;
|
|
status.w_retcode = 1;
|
|
JobFinish(job, status);
|
|
}
|
|
} else {
|
|
/*
|
|
* Job cannot be restarted. Mark the table as full and
|
|
* place the job back on the list of stopped jobs.
|
|
*/
|
|
if (DEBUG(JOB)) {
|
|
printf("table full\n");
|
|
}
|
|
(void)Lst_AtFront(stoppedJobs, (ClientData)job);
|
|
jobFull = TRUE;
|
|
if (DEBUG(JOB)) {
|
|
printf("Job queue is full.\n");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* JobStart --
|
|
* Start a target-creation process going for the target described
|
|
* by the graph node gn.
|
|
*
|
|
* 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.
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static int
|
|
JobStart (gn, flags, previous)
|
|
GNode *gn; /* target to create */
|
|
int flags; /* flags for the job to override normal ones.
|
|
* e.g. JOB_SPECIAL or JOB_IGNDOTS */
|
|
Job *previous; /* The previous Job structure for this node,
|
|
* if any. */
|
|
{
|
|
register Job *job; /* new job descriptor */
|
|
char *argv[4]; /* Argument vector to shell */
|
|
static int jobno = 0; /* job number of catching output in a file */
|
|
Boolean cmdsOK; /* true if the nodes commands were all right */
|
|
Boolean local; /* Set true if the job was run locally */
|
|
Boolean noExec; /* Set true if we decide not to run the job */
|
|
|
|
if (previous != (Job *)NULL) {
|
|
previous->flags &= ~ (JOB_FIRST|JOB_IGNERR|JOB_SILENT|JOB_REMOTE);
|
|
job = previous;
|
|
} else {
|
|
job = (Job *) emalloc (sizeof (Job));
|
|
if (job == (Job *)NULL) {
|
|
Punt("JobStart out of memory");
|
|
}
|
|
flags |= JOB_FIRST;
|
|
}
|
|
|
|
job->node = gn;
|
|
job->tailCmds = NILLNODE;
|
|
|
|
/*
|
|
* 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
|
|
*/
|
|
if (job->flags & JOB_FIRST) {
|
|
cmdsOK = Job_CheckCommands(gn, Error);
|
|
} else {
|
|
cmdsOK = TRUE;
|
|
}
|
|
|
|
/*
|
|
* 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) || (!noExecute && !touchFlag)) {
|
|
/*
|
|
* We're serious here, but if the commands were bogus, we're
|
|
* also dead...
|
|
*/
|
|
if (!cmdsOK) {
|
|
DieHorribly();
|
|
}
|
|
|
|
job->cmdFILE = fopen (tfile, "w+");
|
|
if (job->cmdFILE == (FILE *) NULL) {
|
|
Punt ("Could not open %s", tfile);
|
|
}
|
|
fcntl(fileno(job->cmdFILE), F_SETFD, 1);
|
|
/*
|
|
* Send the commands to the command file, flush all its buffers then
|
|
* rewind and remove the thing.
|
|
*/
|
|
noExec = FALSE;
|
|
|
|
/*
|
|
* used to be backwards; replace when start doing multiple commands
|
|
* per shell.
|
|
*/
|
|
if (compatMake) {
|
|
/*
|
|
* Be compatible: If this is the first time for this node,
|
|
* verify its commands are ok and open the commands list for
|
|
* sequential access by later invocations of JobStart.
|
|
* Once that is done, we take the next command off the list
|
|
* and print it to the command file. If the command was an
|
|
* ellipsis, note that there's nothing more to execute.
|
|
*/
|
|
if ((job->flags&JOB_FIRST) && (Lst_Open(gn->commands) != SUCCESS)){
|
|
cmdsOK = FALSE;
|
|
} else {
|
|
LstNode ln = Lst_Next (gn->commands);
|
|
|
|
if ((ln == NILLNODE) ||
|
|
JobPrintCommand ((char *)Lst_Datum (ln), job))
|
|
{
|
|
noExec = TRUE;
|
|
Lst_Close (gn->commands);
|
|
}
|
|
if (noExec && !(job->flags & JOB_FIRST)) {
|
|
/*
|
|
* If we're not going to execute anything, the job
|
|
* is done and we need to close down the various
|
|
* file descriptors we've opened for output, then
|
|
* call JobDoOutput to catch the final characters or
|
|
* send the file to the screen... Note that the i/o streams
|
|
* are only open if this isn't the first job.
|
|
* Note also that this could not be done in
|
|
* Job_CatchChildren b/c it wasn't clear if there were
|
|
* more commands to execute or not...
|
|
*/
|
|
if (usePipes) {
|
|
#ifdef RMT_WILL_WATCH
|
|
Rmt_Ignore(job->inPipe);
|
|
#else
|
|
FD_CLR(job->inPipe, &outputs);
|
|
#endif
|
|
if (job->outPipe != job->inPipe) {
|
|
(void)close (job->outPipe);
|
|
}
|
|
JobDoOutput (job, TRUE);
|
|
(void)close (job->inPipe);
|
|
} else {
|
|
(void)close (job->outFd);
|
|
JobDoOutput (job, TRUE);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
/*
|
|
* We can do all the commands at once. hooray for sanity
|
|
*/
|
|
numCommands = 0;
|
|
Lst_ForEach (gn->commands, JobPrintCommand, (ClientData)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;
|
|
}
|
|
}
|
|
} else if (noExecute) {
|
|
/*
|
|
* 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) {
|
|
printf (targFmt, gn->name);
|
|
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) {
|
|
Lst_ForEach(gn->commands, JobPrintCommand, (ClientData)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;
|
|
}
|
|
|
|
/*
|
|
* If we're not supposed to execute a shell, don't.
|
|
*/
|
|
if (noExec) {
|
|
/*
|
|
* Unlink and close the command file if we opened one
|
|
*/
|
|
if (job->cmdFILE != stdout) {
|
|
(void) unlink (tfile);
|
|
fclose(job->cmdFILE);
|
|
} else {
|
|
fflush (stdout);
|
|
}
|
|
|
|
/*
|
|
* 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) {
|
|
if (aborting == 0) {
|
|
if (job->tailCmds != NILLNODE) {
|
|
Lst_ForEachFrom(job->node->commands, job->tailCmds,
|
|
JobSaveCommand,
|
|
(ClientData)job->node);
|
|
}
|
|
Make_Update(job->node);
|
|
}
|
|
free((Address)job);
|
|
return(JOB_FINISHED);
|
|
} else {
|
|
free((Address)job);
|
|
return(JOB_ERROR);
|
|
}
|
|
} else {
|
|
fflush (job->cmdFILE);
|
|
(void) unlink (tfile);
|
|
}
|
|
|
|
/*
|
|
* Set up the control arguments to the shell. This is based on the flags
|
|
* set earlier for this job.
|
|
*/
|
|
JobMakeArgv(job, argv);
|
|
|
|
/*
|
|
* If we're using pipes to catch output, create the pipe by which we'll
|
|
* get the shell's output. If we're using files, print out that we're
|
|
* starting a job and then set up its temporary-file name. This is just
|
|
* tfile with two extra digits tacked on -- jobno.
|
|
*/
|
|
if (job->flags & JOB_FIRST) {
|
|
if (usePipes) {
|
|
int fd[2];
|
|
(void) pipe(fd);
|
|
job->inPipe = fd[0];
|
|
job->outPipe = fd[1];
|
|
(void)fcntl (job->inPipe, F_SETFD, 1);
|
|
(void)fcntl (job->outPipe, F_SETFD, 1);
|
|
} else {
|
|
printf ("Remaking `%s'\n", gn->name);
|
|
fflush (stdout);
|
|
sprintf (job->outFile, "%s%02d", tfile, jobno);
|
|
jobno = (jobno + 1) % 100;
|
|
job->outFd = open(job->outFile,O_WRONLY|O_CREAT|O_APPEND,0600);
|
|
(void)fcntl (job->outFd, F_SETFD, 1);
|
|
}
|
|
}
|
|
|
|
local = TRUE;
|
|
|
|
if (local && (((nLocal >= maxLocal) &&
|
|
!(job->flags & JOB_SPECIAL) &&
|
|
(maxLocal != 0))))
|
|
{
|
|
/*
|
|
* The job can only be run locally, but we've hit the limit of
|
|
* local concurrency, so put the job on hold until some other job
|
|
* finishes. Note that the special jobs (.BEGIN, .INTERRUPT and .END)
|
|
* may be run locally even when the local limit has been reached
|
|
* (e.g. when maxLocal == 0), though they will be exported if at
|
|
* all possible.
|
|
*/
|
|
jobFull = TRUE;
|
|
|
|
if (DEBUG(JOB)) {
|
|
printf("Can only run job locally.\n");
|
|
}
|
|
job->flags |= JOB_RESTART;
|
|
(void)Lst_AtEnd(stoppedJobs, (ClientData)job);
|
|
} else {
|
|
if ((nLocal >= maxLocal) && local) {
|
|
/*
|
|
* If we're running this job locally as a special case (see above),
|
|
* at least say the table is full.
|
|
*/
|
|
jobFull = TRUE;
|
|
if (DEBUG(JOB)) {
|
|
printf("Local job queue is full.\n");
|
|
}
|
|
}
|
|
JobExec(job, argv);
|
|
}
|
|
return(JOB_RUNNING);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* 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, transfering 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.
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* curPos may be shifted as may the contents of outBuf.
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
JobDoOutput (job, finish)
|
|
register Job *job; /* the job whose output needs printing */
|
|
Boolean finish; /* TRUE if this is the last time we'll be
|
|
* called for this job */
|
|
{
|
|
Boolean gotNL = FALSE; /* true if got a newline */
|
|
register int nr; /* number of bytes read */
|
|
register int i; /* auxiliary index into outBuf */
|
|
register int max; /* limit for i (end of current data) */
|
|
int nRead; /* (Temporary) number of bytes read */
|
|
|
|
FILE *oFILE; /* Stream pointer to shell's output file */
|
|
char inLine[132];
|
|
|
|
|
|
if (usePipes) {
|
|
/*
|
|
* Read as many bytes as will fit in the buffer.
|
|
*/
|
|
end_loop:
|
|
|
|
nRead = read (job->inPipe, &job->outBuf[job->curPos],
|
|
JOB_BUFSIZE - job->curPos);
|
|
if (nRead < 0) {
|
|
if (DEBUG(JOB)) {
|
|
perror("JobDoOutput(piperead)");
|
|
}
|
|
nr = 0;
|
|
} else {
|
|
nr = 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--) {
|
|
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.
|
|
*/
|
|
gotNL = TRUE;
|
|
i = job->curPos;
|
|
}
|
|
}
|
|
if (gotNL) {
|
|
/*
|
|
* 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, preceeded
|
|
* 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) {
|
|
register char *cp, *ecp;
|
|
|
|
cp = job->outBuf;
|
|
if (commandShell->noPrint) {
|
|
ecp = Str_FindSubstring(job->outBuf,
|
|
commandShell->noPrint);
|
|
while (ecp != (char *)NULL) {
|
|
if (cp != ecp) {
|
|
*ecp = '\0';
|
|
if (job->node != lastNode) {
|
|
printf (targFmt, job->node->name);
|
|
lastNode = job->node;
|
|
}
|
|
/*
|
|
* 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.
|
|
*/
|
|
printf ("%s", cp);
|
|
}
|
|
cp = ecp + commandShell->noPLen;
|
|
if (cp != &job->outBuf[i]) {
|
|
/*
|
|
* Still more to print, look again after skipping
|
|
* the whitespace following the non-printable
|
|
* command....
|
|
*/
|
|
cp++;
|
|
while (*cp == ' ' || *cp == '\t' || *cp == '\n') {
|
|
cp++;
|
|
}
|
|
ecp = Str_FindSubstring (cp,
|
|
commandShell->noPrint);
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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 (job->node != lastNode) {
|
|
printf (targFmt, job->node->name);
|
|
lastNode = job->node;
|
|
}
|
|
printf ("%s\n", cp);
|
|
}
|
|
|
|
fflush (stdout);
|
|
}
|
|
if (i < max - 1) {
|
|
/* shift the remaining characters down */
|
|
memcpy ( job->outBuf, &job->outBuf[i + 1], max - (i + 1));
|
|
job->curPos = max - (i + 1);
|
|
|
|
} else {
|
|
/*
|
|
* We have written everything out, so we just start over
|
|
* from the start of the buffer. No copying. No nothing.
|
|
*/
|
|
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;
|
|
}
|
|
} else {
|
|
/*
|
|
* We've been called to retrieve the output of the job from the
|
|
* temporary file where it's been squirreled away. This consists of
|
|
* opening the file, reading the output line by line, being sure not
|
|
* to print the noPrint line for the shell we used, then close and
|
|
* remove the temporary file. Very simple.
|
|
*
|
|
* Change to read in blocks and do FindSubString type things as for
|
|
* pipes? That would allow for "@echo -n..."
|
|
*/
|
|
oFILE = fopen (job->outFile, "r");
|
|
if (oFILE != (FILE *) NULL) {
|
|
printf ("Results of making %s:\n", job->node->name);
|
|
while (fgets (inLine, sizeof(inLine), oFILE) != NULL) {
|
|
register char *cp, *ecp, *endp;
|
|
|
|
cp = inLine;
|
|
endp = inLine + strlen(inLine);
|
|
if (endp[-1] == '\n') {
|
|
*--endp = '\0';
|
|
}
|
|
if (commandShell->noPrint) {
|
|
ecp = Str_FindSubstring(cp, commandShell->noPrint);
|
|
while (ecp != (char *)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.
|
|
*/
|
|
printf ("%s", cp);
|
|
}
|
|
cp = ecp + commandShell->noPLen;
|
|
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++;
|
|
}
|
|
ecp = Str_FindSubstring(cp, commandShell->noPrint);
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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') {
|
|
printf ("%s\n", cp);
|
|
}
|
|
}
|
|
fclose (oFILE);
|
|
(void) unlink (job->outFile);
|
|
}
|
|
}
|
|
fflush(stdout);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Job_CatchChildren --
|
|
* Handle the exit of a child. Called from Make_Make.
|
|
*
|
|
* Results:
|
|
* none.
|
|
*
|
|
* Side Effects:
|
|
* 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. This will take care of
|
|
* putting jobs on the stoppedJobs queue.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Job_CatchChildren (block)
|
|
Boolean block; /* TRUE if should block on the wait. */
|
|
{
|
|
int pid; /* pid of dead child */
|
|
register Job *job; /* job descriptor for dead child */
|
|
LstNode jnode; /* list element for finding job */
|
|
union wait status; /* Exit/termination status */
|
|
|
|
/*
|
|
* Don't even bother if we know there's no one around.
|
|
*/
|
|
if (nLocal == 0) {
|
|
return;
|
|
}
|
|
|
|
while ((pid = wait3((int *)&status, (block?0:WNOHANG)|WUNTRACED,
|
|
(struct rusage *)0)) > 0)
|
|
{
|
|
if (DEBUG(JOB))
|
|
printf("Process %d exited or stopped.\n", pid);
|
|
|
|
|
|
jnode = Lst_Find (jobs, (ClientData)&pid, JobCmpPid);
|
|
|
|
if (jnode == NILLNODE) {
|
|
if (WIFSIGNALED(status) && (status.w_termsig == SIGCONT)) {
|
|
jnode = Lst_Find(stoppedJobs, (ClientData) &pid, JobCmpPid);
|
|
if (jnode == NILLNODE) {
|
|
Error("Resumed child (%d) not in table", pid);
|
|
continue;
|
|
}
|
|
job = (Job *)Lst_Datum(jnode);
|
|
(void)Lst_Remove(stoppedJobs, jnode);
|
|
} else {
|
|
Error ("Child (%d) not in table?", pid);
|
|
continue;
|
|
}
|
|
} else {
|
|
job = (Job *) Lst_Datum (jnode);
|
|
(void)Lst_Remove (jobs, jnode);
|
|
nJobs -= 1;
|
|
if (jobFull && DEBUG(JOB)) {
|
|
printf("Job queue is no longer full.\n");
|
|
}
|
|
jobFull = FALSE;
|
|
nLocal -= 1;
|
|
}
|
|
|
|
JobFinish (job, status);
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Job_CatchOutput --
|
|
* 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.
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* Output is read from pipes if we're piping.
|
|
* -----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Job_CatchOutput ()
|
|
{
|
|
int nfds;
|
|
struct timeval timeout;
|
|
fd_set readfds;
|
|
register LstNode ln;
|
|
register Job *job;
|
|
#ifdef RMT_WILL_WATCH
|
|
int pnJobs; /* Previous nJobs */
|
|
#endif
|
|
|
|
fflush(stdout);
|
|
#ifdef RMT_WILL_WATCH
|
|
pnJobs = nJobs;
|
|
|
|
/*
|
|
* It is possible for us to be called with nJobs equal to 0. This happens
|
|
* if all the jobs finish and a job that is stopped cannot be run
|
|
* locally (eg if maxLocal is 0) and cannot be exported. The job will
|
|
* be placed back on the stoppedJobs queue, Job_Empty() will return false,
|
|
* Make_Run will call us again when there's nothing for which to wait.
|
|
* nJobs never changes, so we loop forever. Hence the check. It could
|
|
* be argued that we should sleep for a bit so as not to swamp the
|
|
* exportation system with requests. Perhaps we should.
|
|
*
|
|
* NOTE: IT IS THE RESPONSIBILITY OF Rmt_Wait TO CALL Job_CatchChildren
|
|
* IN A TIMELY FASHION TO CATCH ANY LOCALLY RUNNING JOBS THAT EXIT.
|
|
* It may use the variable nLocal to determine if it needs to call
|
|
* Job_CatchChildren (if nLocal is 0, there's nothing for which to
|
|
* wait...)
|
|
*/
|
|
while (nJobs != 0 && pnJobs == nJobs) {
|
|
Rmt_Wait();
|
|
}
|
|
#else
|
|
if (usePipes) {
|
|
readfds = outputs;
|
|
timeout.tv_sec = SEL_SEC;
|
|
timeout.tv_usec = SEL_USEC;
|
|
|
|
if ((nfds = select (FD_SETSIZE, &readfds, (fd_set *) 0, (fd_set *) 0, &timeout)) < 0)
|
|
{
|
|
return;
|
|
} else {
|
|
if (Lst_Open (jobs) == FAILURE) {
|
|
Punt ("Cannot open job table");
|
|
}
|
|
while (nfds && (ln = Lst_Next (jobs)) != NILLNODE) {
|
|
job = (Job *) Lst_Datum (ln);
|
|
if (FD_ISSET(job->inPipe, &readfds)) {
|
|
JobDoOutput (job, FALSE);
|
|
nfds -= 1;
|
|
}
|
|
}
|
|
Lst_Close (jobs);
|
|
}
|
|
}
|
|
#endif /* RMT_WILL_WATCH */
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Job_Make --
|
|
* Start the creation of a target. Basically a front-end for
|
|
* JobStart used by the Make module.
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side Effects:
|
|
* Another job is started.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Job_Make (gn)
|
|
GNode *gn;
|
|
{
|
|
(void)JobStart (gn, 0, (Job *)NULL);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Job_Init --
|
|
* Initialize the process module
|
|
*
|
|
* Results:
|
|
* none
|
|
*
|
|
* Side Effects:
|
|
* lists and counters are initialized
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Job_Init (maxproc, maxlocal)
|
|
int maxproc; /* the greatest number of jobs which may be
|
|
* running at one time */
|
|
int maxlocal; /* the greatest number of local jobs which may
|
|
* be running at once. */
|
|
{
|
|
GNode *begin; /* node for commands to do at the very start */
|
|
|
|
sprintf (tfile, "/tmp/make%05d", getpid());
|
|
|
|
jobs = Lst_Init (FALSE);
|
|
stoppedJobs = Lst_Init(FALSE);
|
|
maxJobs = maxproc;
|
|
maxLocal = maxlocal;
|
|
nJobs = 0;
|
|
nLocal = 0;
|
|
jobFull = FALSE;
|
|
|
|
aborting = 0;
|
|
errors = 0;
|
|
|
|
lastNode = NILGNODE;
|
|
|
|
if (maxJobs == 1) {
|
|
/*
|
|
* If only one job can run at a time, there's no need for a banner,
|
|
* no is there?
|
|
*/
|
|
targFmt = "";
|
|
} else {
|
|
targFmt = TARG_FMT;
|
|
}
|
|
|
|
if (shellPath == (char *) NULL) {
|
|
/*
|
|
* The user didn't specify a shell to use, so we are using the
|
|
* default one... Both the absolute path and the last component
|
|
* must be set. The last component is taken from the 'name' field
|
|
* of the default shell description pointed-to by commandShell.
|
|
* All default shells are located in _PATH_DEFSHELLDIR.
|
|
*/
|
|
shellName = commandShell->name;
|
|
shellPath = str_concat (_PATH_DEFSHELLDIR, shellName, STR_ADDSLASH);
|
|
}
|
|
|
|
if (commandShell->exit == (char *)NULL) {
|
|
commandShell->exit = "";
|
|
}
|
|
if (commandShell->echo == (char *)NULL) {
|
|
commandShell->echo = "";
|
|
}
|
|
|
|
/*
|
|
* Catch the four signals that POSIX specifies if they aren't ignored.
|
|
* JobPassSig will take care of calling JobInterrupt if appropriate.
|
|
*/
|
|
if (signal (SIGINT, SIG_IGN) != SIG_IGN) {
|
|
signal (SIGINT, JobPassSig);
|
|
}
|
|
if (signal (SIGHUP, SIG_IGN) != SIG_IGN) {
|
|
signal (SIGHUP, JobPassSig);
|
|
}
|
|
if (signal (SIGQUIT, SIG_IGN) != SIG_IGN) {
|
|
signal (SIGQUIT, JobPassSig);
|
|
}
|
|
if (signal (SIGTERM, SIG_IGN) != SIG_IGN) {
|
|
signal (SIGTERM, JobPassSig);
|
|
}
|
|
/*
|
|
* 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)
|
|
*/
|
|
#if defined(RMT_WANTS_SIGNALS) || defined(USE_PGRP)
|
|
if (signal (SIGTSTP, SIG_IGN) != SIG_IGN) {
|
|
signal (SIGTSTP, JobPassSig);
|
|
}
|
|
if (signal (SIGTTOU, SIG_IGN) != SIG_IGN) {
|
|
signal (SIGTTOU, JobPassSig);
|
|
}
|
|
if (signal (SIGTTIN, SIG_IGN) != SIG_IGN) {
|
|
signal (SIGTTIN, JobPassSig);
|
|
}
|
|
if (signal (SIGWINCH, SIG_IGN) != SIG_IGN) {
|
|
signal (SIGWINCH, JobPassSig);
|
|
}
|
|
#endif
|
|
|
|
begin = Targ_FindNode (".BEGIN", TARG_NOCREATE);
|
|
|
|
if (begin != NILGNODE) {
|
|
JobStart (begin, JOB_SPECIAL, (Job *)0);
|
|
while (nJobs) {
|
|
Job_CatchOutput();
|
|
#ifndef RMT_WILL_WATCH
|
|
Job_CatchChildren (!usePipes);
|
|
#endif /* RMT_WILL_WATCH */
|
|
}
|
|
}
|
|
postCommands = Targ_FindNode (".END", TARG_CREATE);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Job_Full --
|
|
* See if the job table is full. It is considered full if it is OR
|
|
* if we are in the process of aborting OR if we have
|
|
* reached/exceeded our local quota. This prevents any more jobs
|
|
* from starting up.
|
|
*
|
|
* Results:
|
|
* TRUE if the job table is full, FALSE otherwise
|
|
* Side Effects:
|
|
* None.
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
Boolean
|
|
Job_Full ()
|
|
{
|
|
return (aborting || jobFull);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Job_Empty --
|
|
* See if the job table is empty. Because the local concurrency may
|
|
* be set to 0, it is possible for the job table to become empty,
|
|
* while the list of stoppedJobs remains non-empty. In such a case,
|
|
* we want to restart as many jobs as we can.
|
|
*
|
|
* Results:
|
|
* TRUE if it is. FALSE if it ain't.
|
|
*
|
|
* Side Effects:
|
|
* None.
|
|
*
|
|
* -----------------------------------------------------------------------
|
|
*/
|
|
Boolean
|
|
Job_Empty ()
|
|
{
|
|
if (nJobs == 0) {
|
|
if (!Lst_IsEmpty(stoppedJobs) && !aborting) {
|
|
/*
|
|
* The job table is obviously not full if it has no jobs in
|
|
* it...Try and restart the stopped jobs.
|
|
*/
|
|
jobFull = FALSE;
|
|
while (!jobFull && !Lst_IsEmpty(stoppedJobs)) {
|
|
JobRestart((Job *)Lst_DeQueue(stoppedJobs));
|
|
}
|
|
return(FALSE);
|
|
} else {
|
|
return(TRUE);
|
|
}
|
|
} else {
|
|
return(FALSE);
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* JobMatchShell --
|
|
* Find a matching shell in 'shells' given its final component.
|
|
*
|
|
* Results:
|
|
* A pointer to the Shell structure.
|
|
*
|
|
* Side Effects:
|
|
* None.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static Shell *
|
|
JobMatchShell (name)
|
|
char *name; /* Final component of shell path */
|
|
{
|
|
register Shell *sh; /* Pointer into shells table */
|
|
Shell *match; /* Longest-matching shell */
|
|
register char *cp1,
|
|
*cp2;
|
|
char *eoname;
|
|
|
|
eoname = name + strlen (name);
|
|
|
|
match = (Shell *) NULL;
|
|
|
|
for (sh = shells; sh->name != NULL; sh++) {
|
|
for (cp1 = eoname - strlen (sh->name), cp2 = sh->name;
|
|
*cp1 != '\0' && *cp1 == *cp2;
|
|
cp1++, cp2++) {
|
|
continue;
|
|
}
|
|
if (*cp1 != *cp2) {
|
|
continue;
|
|
} else if (match == (Shell *) NULL ||
|
|
strlen (match->name) < strlen (sh->name)) {
|
|
match = sh;
|
|
}
|
|
}
|
|
return (match == (Shell *) NULL ? sh : match);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Job_ParseShell --
|
|
* Parse a shell specification and set up commandShell, shellPath
|
|
* and shellName appropriately.
|
|
*
|
|
* Results:
|
|
* FAILURE 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. Overrides "name" if given
|
|
* 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
|
|
* 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.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
ReturnStatus
|
|
Job_ParseShell (line)
|
|
char *line; /* The shell spec */
|
|
{
|
|
char **words;
|
|
int wordCount;
|
|
register char **argv;
|
|
register int argc;
|
|
char *path;
|
|
Shell newShell;
|
|
Boolean fullSpec = FALSE;
|
|
|
|
while (isspace (*line)) {
|
|
line++;
|
|
}
|
|
words = brk_string (line, &wordCount, TRUE);
|
|
|
|
memset ((Address)&newShell, 0, sizeof(newShell));
|
|
|
|
/*
|
|
* Parse the specification by keyword
|
|
*/
|
|
for (path = (char *)NULL, argc = wordCount - 1, argv = words + 1;
|
|
argc != 0;
|
|
argc--, argv++) {
|
|
if (strncmp (*argv, "path=", 5) == 0) {
|
|
path = &argv[0][5];
|
|
} else if (strncmp (*argv, "name=", 5) == 0) {
|
|
newShell.name = &argv[0][5];
|
|
} else {
|
|
if (strncmp (*argv, "quiet=", 6) == 0) {
|
|
newShell.echoOff = &argv[0][6];
|
|
} else if (strncmp (*argv, "echo=", 5) == 0) {
|
|
newShell.echoOn = &argv[0][5];
|
|
} else if (strncmp (*argv, "filter=", 7) == 0) {
|
|
newShell.noPrint = &argv[0][7];
|
|
newShell.noPLen = strlen(newShell.noPrint);
|
|
} else if (strncmp (*argv, "echoFlag=", 9) == 0) {
|
|
newShell.echo = &argv[0][9];
|
|
} else if (strncmp (*argv, "errFlag=", 8) == 0) {
|
|
newShell.exit = &argv[0][8];
|
|
} else if (strncmp (*argv, "hasErrCtl=", 10) == 0) {
|
|
char c = argv[0][10];
|
|
newShell.hasErrCtl = !((c != 'Y') && (c != 'y') &&
|
|
(c != 'T') && (c != 't'));
|
|
} else if (strncmp (*argv, "check=", 6) == 0) {
|
|
newShell.errCheck = &argv[0][6];
|
|
} else if (strncmp (*argv, "ignore=", 7) == 0) {
|
|
newShell.ignErr = &argv[0][7];
|
|
} else {
|
|
Parse_Error (PARSE_FATAL, "Unknown keyword \"%s\"",
|
|
*argv);
|
|
return (FAILURE);
|
|
}
|
|
fullSpec = TRUE;
|
|
}
|
|
}
|
|
|
|
if (path == (char *)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 JobMatchShell
|
|
* and set things up the right way. shellPath will be set up by
|
|
* Job_Init.
|
|
*/
|
|
if (newShell.name == (char *)NULL) {
|
|
Parse_Error (PARSE_FATAL, "Neither path nor name specified");
|
|
return (FAILURE);
|
|
} else {
|
|
commandShell = JobMatchShell (newShell.name);
|
|
shellName = newShell.name;
|
|
}
|
|
} 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 == (char *)NULL) {
|
|
path = shellPath;
|
|
} else {
|
|
path += 1;
|
|
}
|
|
if (newShell.name != (char *)NULL) {
|
|
shellName = newShell.name;
|
|
} else {
|
|
shellName = path;
|
|
}
|
|
if (!fullSpec) {
|
|
commandShell = JobMatchShell (shellName);
|
|
} else {
|
|
commandShell = (Shell *) emalloc(sizeof(Shell));
|
|
*commandShell = newShell;
|
|
}
|
|
}
|
|
|
|
if (commandShell->echoOn && commandShell->echoOff) {
|
|
commandShell->hasEchoCtl = TRUE;
|
|
}
|
|
|
|
if (!commandShell->hasErrCtl) {
|
|
if (commandShell->errCheck == (char *)NULL) {
|
|
commandShell->errCheck = "";
|
|
}
|
|
if (commandShell->ignErr == (char *)NULL) {
|
|
commandShell->ignErr = "%s\n";
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Do not free up the words themselves, since they might be in use by the
|
|
* shell specification...
|
|
*/
|
|
free (words);
|
|
return SUCCESS;
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* JobInterrupt --
|
|
* Handle the receipt of an interrupt.
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* All children are killed. Another job will be started if the
|
|
* .INTERRUPT target was given.
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
JobInterrupt (runINTERRUPT)
|
|
int runINTERRUPT; /* Non-zero if commands for the .INTERRUPT
|
|
* target should be executed */
|
|
{
|
|
LstNode ln; /* element in job table */
|
|
Job *job; /* job descriptor in that element */
|
|
GNode *interrupt; /* the node describing the .INTERRUPT target */
|
|
|
|
aborting = ABORT_INTERRUPT;
|
|
|
|
(void)Lst_Open (jobs);
|
|
while ((ln = Lst_Next (jobs)) != NILLNODE) {
|
|
job = (Job *) Lst_Datum (ln);
|
|
|
|
if (!Targ_Precious (job->node)) {
|
|
char *file = (job->node->path == (char *)NULL ?
|
|
job->node->name :
|
|
job->node->path);
|
|
struct stat st;
|
|
if (!noExecute && lstat(file, &st) != -1 && !S_ISDIR(st.st_mode) &&
|
|
unlink(file) != -1) {
|
|
Error ("*** %s removed", file);
|
|
}
|
|
}
|
|
#ifdef RMT_WANTS_SIGNALS
|
|
if (job->flags & JOB_REMOTE) {
|
|
/*
|
|
* If job is remote, let the Rmt module do the killing.
|
|
*/
|
|
if (!Rmt_Signal(job, SIGINT)) {
|
|
/*
|
|
* If couldn't kill the thing, finish it out now with an
|
|
* error code, since no exit report will come in likely.
|
|
*/
|
|
union wait status;
|
|
|
|
status.w_status = 0;
|
|
status.w_retcode = 1;
|
|
JobFinish(job, status);
|
|
}
|
|
} else if (job->pid) {
|
|
KILL(job->pid, SIGINT);
|
|
}
|
|
#else
|
|
if (job->pid) {
|
|
KILL(job->pid, SIGINT);
|
|
}
|
|
#endif /* RMT_WANTS_SIGNALS */
|
|
}
|
|
Lst_Close (jobs);
|
|
|
|
if (runINTERRUPT && !touchFlag) {
|
|
interrupt = Targ_FindNode (".INTERRUPT", TARG_NOCREATE);
|
|
if (interrupt != NILGNODE) {
|
|
ignoreErrors = FALSE;
|
|
|
|
JobStart (interrupt, JOB_IGNDOTS, (Job *)0);
|
|
while (nJobs) {
|
|
Job_CatchOutput();
|
|
#ifndef RMT_WILL_WATCH
|
|
Job_CatchChildren (!usePipes);
|
|
#endif /* RMT_WILL_WATCH */
|
|
}
|
|
}
|
|
}
|
|
(void) unlink (tfile);
|
|
exit (0);
|
|
}
|
|
|
|
/*
|
|
*-----------------------------------------------------------------------
|
|
* Job_End --
|
|
* Do final processing such as the running of the commands
|
|
* attached to the .END target.
|
|
*
|
|
* Results:
|
|
* Number of errors reported.
|
|
*
|
|
* Side Effects:
|
|
* The process' temporary file (tfile) is removed if it still
|
|
* existed.
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
int
|
|
Job_End ()
|
|
{
|
|
if (postCommands != NILGNODE && !Lst_IsEmpty (postCommands->commands)) {
|
|
if (errors) {
|
|
Error ("Errors reported so .END ignored");
|
|
} else {
|
|
JobStart (postCommands, JOB_SPECIAL | JOB_IGNDOTS,
|
|
(Job *)0);
|
|
|
|
while (nJobs) {
|
|
Job_CatchOutput();
|
|
#ifndef RMT_WILL_WATCH
|
|
Job_CatchChildren (!usePipes);
|
|
#endif /* RMT_WILL_WATCH */
|
|
}
|
|
}
|
|
}
|
|
(void) unlink (tfile);
|
|
return(errors);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Job_Wait --
|
|
* Waits for all running jobs to finish and returns. Sets 'aborting'
|
|
* to ABORT_WAIT to prevent other jobs from starting.
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side Effects:
|
|
* Currently running jobs finish.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Job_Wait()
|
|
{
|
|
aborting = ABORT_WAIT;
|
|
while (nJobs != 0) {
|
|
Job_CatchOutput();
|
|
#ifndef RMT_WILL_WATCH
|
|
Job_CatchChildren(!usePipes);
|
|
#endif /* RMT_WILL_WATCH */
|
|
}
|
|
aborting = 0;
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Job_AbortAll --
|
|
* 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.
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* All children are killed, not just the firstborn
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Job_AbortAll ()
|
|
{
|
|
LstNode ln; /* element in job table */
|
|
Job *job; /* the job descriptor in that element */
|
|
int foo;
|
|
|
|
aborting = ABORT_ERROR;
|
|
|
|
if (nJobs) {
|
|
|
|
(void)Lst_Open (jobs);
|
|
while ((ln = Lst_Next (jobs)) != NILLNODE) {
|
|
job = (Job *) Lst_Datum (ln);
|
|
|
|
/*
|
|
* kill the child process with increasingly drastic signals to make
|
|
* darn sure it's dead.
|
|
*/
|
|
#ifdef RMT_WANTS_SIGNALS
|
|
if (job->flags & JOB_REMOTE) {
|
|
Rmt_Signal(job, SIGINT);
|
|
Rmt_Signal(job, SIGKILL);
|
|
} else {
|
|
KILL(job->pid, SIGINT);
|
|
KILL(job->pid, SIGKILL);
|
|
}
|
|
#else
|
|
KILL(job->pid, SIGINT);
|
|
KILL(job->pid, SIGKILL);
|
|
#endif /* RMT_WANTS_SIGNALS */
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Catch as many children as want to report in at first, then give up
|
|
*/
|
|
while (wait3(&foo, WNOHANG, (struct rusage *)0) > 0)
|
|
continue;
|
|
(void) unlink (tfile);
|
|
}
|