dba7b0ef92
Changes of interest
o unit-tests: use private TMPDIR to avoid errors from other users
o avoid strdup in mkTempFile
o always use vfork
o job.c: do not create empty shell files in jobs mode
reduce unnecessary calls to waitpid
o cond.c: fix debug output for comparison operators in conditionals
211 lines
7.1 KiB
C
211 lines
7.1 KiB
C
/* $NetBSD: job.h,v 1.72 2021/02/05 19:19:17 sjg Exp $ */
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/*
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* Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Adam de Boor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)job.h 8.1 (Berkeley) 6/6/93
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*/
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/*
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* Copyright (c) 1988, 1989 by Adam de Boor
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* Copyright (c) 1989 by Berkeley Softworks
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Adam de Boor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)job.h 8.1 (Berkeley) 6/6/93
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*/
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/*
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* Running of jobs in parallel mode.
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*/
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#ifndef MAKE_JOB_H
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#define MAKE_JOB_H
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#define TMPPAT "makeXXXXXX" /* relative to tmpdir */
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#ifdef USE_SELECT
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/*
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* Emulate poll() in terms of select(). This is not a complete
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* emulation but it is sufficient for make's purposes.
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*/
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#define poll emul_poll
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#define pollfd emul_pollfd
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struct emul_pollfd {
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int fd;
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short events;
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short revents;
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};
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#define POLLIN 0x0001
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#define POLLOUT 0x0004
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int
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emul_poll(struct pollfd *fd, int nfd, int timeout);
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#endif
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/*
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* The POLL_MSEC constant determines the maximum number of milliseconds spent
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* in poll before coming out to see if a child has finished.
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*/
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#define POLL_MSEC 5000
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struct pollfd;
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#ifdef USE_META
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# include "meta.h"
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#endif
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typedef enum JobStatus {
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JOB_ST_FREE = 0, /* Job is available */
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JOB_ST_SET_UP = 1, /* Job is allocated but otherwise invalid */
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/* XXX: What about the 2? */
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JOB_ST_RUNNING = 3, /* Job is running, pid valid */
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JOB_ST_FINISHED = 4 /* Job is done (ie after SIGCHILD) */
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} JobStatus;
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/*
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* A Job manages the shell commands that are run to create a single target.
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* Each job is run in a separate subprocess by a shell. Several jobs can run
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* in parallel.
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*
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* The shell commands for the target are written to a temporary file,
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* then the shell is run with the temporary file as stdin, and the output
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* of that shell is captured via a pipe.
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*
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* When a job is finished, Make_Update updates all parents of the node
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* that was just remade, marking them as ready to be made next if all
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* other dependencies are finished as well.
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*/
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typedef struct Job {
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/* The process ID of the shell running the commands */
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int pid;
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/* The target the child is making */
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GNode *node;
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/* If one of the shell commands is "...", all following commands are
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* delayed until the .END node is made. This list node points to the
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* first of these commands, if any. */
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StringListNode *tailCmds;
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/* This is where the shell commands go. */
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FILE *cmdFILE;
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int exit_status; /* from wait4() in signal handler */
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JobStatus status;
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Boolean suspended;
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/* Ignore non-zero exits */
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Boolean ignerr;
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/* Output the command before or instead of running it. */
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Boolean echo;
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/* Target is a special one. */
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Boolean special;
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int inPipe; /* Pipe for reading output from job */
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int outPipe; /* Pipe for writing control commands */
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struct pollfd *inPollfd; /* pollfd associated with inPipe */
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#define JOB_BUFSIZE 1024
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/* Buffer for storing the output of the job, line by line. */
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char outBuf[JOB_BUFSIZE + 1];
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size_t curPos; /* Current position in outBuf. */
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#ifdef USE_META
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struct BuildMon bm;
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#endif
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} Job;
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extern const char *shellPath;
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extern const char *shellName;
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extern char *shellErrFlag;
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extern int jobTokensRunning; /* tokens currently "out" */
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void Shell_Init(void);
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const char *Shell_GetNewline(void);
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void Job_Touch(GNode *, Boolean);
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Boolean Job_CheckCommands(GNode *, void (*abortProc)(const char *, ...));
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void Job_CatchChildren(void);
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void Job_CatchOutput(void);
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void Job_Make(GNode *);
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void Job_Init(void);
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Boolean Job_ParseShell(char *);
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int Job_Finish(void);
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void Job_End(void);
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void Job_Wait(void);
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void Job_AbortAll(void);
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void Job_TokenReturn(void);
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Boolean Job_TokenWithdraw(void);
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void Job_ServerStart(int, int, int);
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void Job_SetPrefix(void);
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Boolean Job_RunTarget(const char *, const char *);
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void Job_FlagsToString(const Job *, char *, size_t);
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int Job_TempFile(const char *, char *, size_t);
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#endif /* MAKE_JOB_H */
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