1 /* $NetBSD: job.c,v 1.190 2017/04/16 21:23:43 riastradh Exp $ */
4 * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
7 * This code is derived from software contributed to Berkeley by
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * Copyright (c) 1988, 1989 by Adam de Boor
37 * Copyright (c) 1989 by Berkeley Softworks
38 * All rights reserved.
40 * This code is derived from software contributed to Berkeley by
43 * Redistribution and use in source and binary forms, with or without
44 * modification, are permitted provided that the following conditions
46 * 1. Redistributions of source code must retain the above copyright
47 * notice, this list of conditions and the following disclaimer.
48 * 2. Redistributions in binary form must reproduce the above copyright
49 * notice, this list of conditions and the following disclaimer in the
50 * documentation and/or other materials provided with the distribution.
51 * 3. All advertising materials mentioning features or use of this software
52 * must display the following acknowledgement:
53 * This product includes software developed by the University of
54 * California, Berkeley and its contributors.
55 * 4. Neither the name of the University nor the names of its contributors
56 * may be used to endorse or promote products derived from this software
57 * without specific prior written permission.
59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
73 static char rcsid
[] = "$NetBSD: job.c,v 1.190 2017/04/16 21:23:43 riastradh Exp $";
75 #include <sys/cdefs.h>
78 static char sccsid
[] = "@(#)job.c 8.2 (Berkeley) 3/19/94";
80 __RCSID("$NetBSD: job.c,v 1.190 2017/04/16 21:23:43 riastradh Exp $");
87 * handle the creation etc. of our child processes.
90 * Job_Make Start the creation of the given target.
92 * Job_CatchChildren Check for and handle the termination of any
93 * children. This must be called reasonably
94 * frequently to keep the whole make going at
95 * a decent clip, since job table entries aren't
96 * removed until their process is caught this way.
98 * Job_CatchOutput Print any output our children have produced.
99 * Should also be called fairly frequently to
100 * keep the user informed of what's going on.
101 * If no output is waiting, it will block for
102 * a time given by the SEL_* constants, below,
103 * or until output is ready.
105 * Job_Init Called to intialize this module. in addition,
106 * any commands attached to the .BEGIN target
107 * are executed before this function returns.
108 * Hence, the makefile must have been parsed
109 * before this function is called.
111 * Job_End Cleanup any memory used.
113 * Job_ParseShell Given the line following a .SHELL target, parse
114 * the line as a shell specification. Returns
115 * FAILURE if the spec was incorrect.
117 * Job_Finish Perform any final processing which needs doing.
118 * This includes the execution of any commands
119 * which have been/were attached to the .END
120 * target. It should only be called when the
121 * job table is empty.
123 * Job_AbortAll Abort all currently running jobs. It doesn't
124 * handle output or do anything for the jobs,
125 * just kills them. It should only be called in
126 * an emergency, as it were.
128 * Job_CheckCommands Verify that the commands for a target are
129 * ok. Provide them if necessary and possible.
131 * Job_Touch Update a target without really updating it.
133 * Job_Wait Wait for all currently-running jobs to finish.
139 #include <sys/types.h>
140 #include <sys/stat.h>
141 #include <sys/file.h>
142 #include <sys/time.h>
147 #if !defined(USE_SELECT) && defined(HAVE_POLL_H)
150 #ifndef USE_SELECT /* no poll.h */
153 #if defined(HAVE_SYS_SELECT_H)
154 # include <sys/select.h>
161 #if defined(HAVE_SYS_SOCKET_H)
162 # include <sys/socket.h>
169 #include "pathnames.h"
171 # define STATIC static
174 * error handling variables
176 static int errors
= 0; /* number of errors reported */
177 static int aborting
= 0; /* why is the make aborting? */
178 #define ABORT_ERROR 1 /* Because of an error */
179 #define ABORT_INTERRUPT 2 /* Because it was interrupted */
180 #define ABORT_WAIT 3 /* Waiting for jobs to finish */
181 #define JOB_TOKENS "+EI+" /* Token to requeue for each abort state */
184 * this tracks the number of tokens currently "out" to build jobs.
186 int jobTokensRunning
= 0;
187 int not_parallel
= 0; /* set if .NOT_PARALLEL */
190 * XXX: Avoid SunOS bug... FILENO() is fp->_file, and file
191 * is a char! So when we go above 127 we turn negative!
193 #define FILENO(a) ((unsigned) fileno(a))
196 * post-make command processing. The node postCommands is really just the
197 * .END target but we keep it around to avoid having to search for it
200 static GNode
*postCommands
= NULL
;
201 /* node containing commands to execute when
202 * everything else is done */
203 static int numCommands
; /* The number of commands actually printed
204 * for a target. Should this number be
205 * 0, no shell will be executed. */
208 * Return values from JobStart.
210 #define JOB_RUNNING 0 /* Job is running */
211 #define JOB_ERROR 1 /* Error in starting the job */
212 #define JOB_FINISHED 2 /* The job is already finished */
215 * Descriptions for various shells.
217 * The build environment may set DEFSHELL_INDEX to one of
218 * DEFSHELL_INDEX_SH, DEFSHELL_INDEX_KSH, or DEFSHELL_INDEX_CSH, to
219 * select one of the prefedined shells as the default shell.
221 * Alternatively, the build environment may set DEFSHELL_CUSTOM to the
222 * name or the full path of a sh-compatible shell, which will be used as
225 * ".SHELL" lines in Makefiles can choose the default shell from the
226 # set defined here, or add additional shells.
229 #ifdef DEFSHELL_CUSTOM
230 #define DEFSHELL_INDEX_CUSTOM 0
231 #define DEFSHELL_INDEX_SH 1
232 #define DEFSHELL_INDEX_KSH 2
233 #define DEFSHELL_INDEX_CSH 3
234 #else /* !DEFSHELL_CUSTOM */
235 #define DEFSHELL_INDEX_SH 0
236 #define DEFSHELL_INDEX_KSH 1
237 #define DEFSHELL_INDEX_CSH 2
238 #endif /* !DEFSHELL_CUSTOM */
240 #ifndef DEFSHELL_INDEX
241 #define DEFSHELL_INDEX 0 /* DEFSHELL_INDEX_CUSTOM or DEFSHELL_INDEX_SH */
242 #endif /* !DEFSHELL_INDEX */
244 static Shell shells
[] = {
245 #ifdef DEFSHELL_CUSTOM
247 * An sh-compatible shell with a non-standard name.
249 * Keep this in sync with the "sh" description below, but avoid
250 * non-portable features that might not be supplied by all
251 * sh-compatible shells.
255 FALSE
, "", "", "", 0,
256 FALSE
, "echo \"%s\"\n", "%s\n", "{ %s \n} || exit $?\n", "'\n'", '#',
260 #endif /* DEFSHELL_CUSTOM */
262 * SH description. Echo control is also possible and, under
263 * sun UNIX anyway, one can even control error checking.
267 FALSE
, "", "", "", 0,
268 FALSE
, "echo \"%s\"\n", "%s\n", "{ %s \n} || exit $?\n", "'\n'", '#',
269 #if defined(MAKE_NATIVE) && defined(__NetBSD__)
281 TRUE
, "set +v", "set -v", "set +v", 6,
282 FALSE
, "echo \"%s\"\n", "%s\n", "{ %s \n} || exit $?\n", "'\n'", '#',
287 * CSH description. The csh can do echo control by playing
288 * with the setting of the 'echo' shell variable. Sadly,
289 * however, it is unable to do error control nicely.
293 TRUE
, "unset verbose", "set verbose", "unset verbose", 10,
294 FALSE
, "echo \"%s\"\n", "csh -c \"%s || exit 0\"\n", "", "'\\\n'", '#',
302 FALSE
, NULL
, NULL
, NULL
, 0,
303 FALSE
, NULL
, NULL
, NULL
, NULL
, 0,
307 static Shell
*commandShell
= &shells
[DEFSHELL_INDEX
]; /* this is the shell to
309 * commands in the Makefile.
311 * Job_ParseShell function */
312 const char *shellPath
= NULL
, /* full pathname of
313 * executable image */
314 *shellName
= NULL
; /* last component of shell */
315 char *shellErrFlag
= NULL
;
316 static const char *shellArgv
= NULL
; /* Custom shell args */
319 STATIC Job
*job_table
; /* The structures that describe them */
320 STATIC Job
*job_table_end
; /* job_table + maxJobs */
321 static int wantToken
; /* we want a token */
322 static int lurking_children
= 0;
323 static int make_suspended
= 0; /* non-zero if we've seen a SIGTSTP (etc) */
326 * Set of descriptors of pipes connected to
327 * the output channels of children
329 static struct pollfd
*fds
= NULL
;
330 static Job
**jobfds
= NULL
;
332 static void watchfd(Job
*);
333 static void clearfd(Job
*);
334 static int readyfd(Job
*);
336 STATIC GNode
*lastNode
; /* The node for which output was most recently
338 static char *targPrefix
= NULL
; /* What we print at the start of TARG_FMT */
339 static Job tokenWaitJob
; /* token wait pseudo-job */
341 static Job childExitJob
; /* child exit pseudo-job */
342 #define CHILD_EXIT "."
343 #define DO_JOB_RESUME "R"
345 #define TARG_FMT "%s %s ---\n" /* Default format */
346 #define MESSAGE(fp, gn) \
347 if (maxJobs != 1 && targPrefix && *targPrefix) \
348 (void)fprintf(fp, TARG_FMT, targPrefix, gn->name)
350 static sigset_t caught_signals
; /* Set of signals we handle */
352 #define KILLPG(pid, sig) kill(-(pid), (sig))
354 #define KILLPG(pid, sig) killpg((pid), (sig))
357 static void JobChildSig(int);
358 static void JobContinueSig(int);
359 static Job
*JobFindPid(int, int, Boolean
);
360 static int JobPrintCommand(void *, void *);
361 static int JobSaveCommand(void *, void *);
362 static void JobClose(Job
*);
363 static void JobExec(Job
*, char **);
364 static void JobMakeArgv(Job
*, char **);
365 static int JobStart(GNode
*, int);
366 static char *JobOutput(Job
*, char *, char *, int);
367 static void JobDoOutput(Job
*, Boolean
);
368 static Shell
*JobMatchShell(const char *);
369 static void JobInterrupt(int, int) MAKE_ATTR_DEAD
;
370 static void JobRestartJobs(void);
371 static void JobTokenAdd(void);
372 static void JobSigLock(sigset_t
*);
373 static void JobSigUnlock(sigset_t
*);
374 static void JobSigReset(void);
376 #if !defined(MALLOC_OPTIONS)
377 # define MALLOC_OPTIONS "A"
379 const char *malloc_options
= MALLOC_OPTIONS
;
382 job_table_dump(const char *where
)
386 fprintf(debug_file
, "job table @ %s\n", where
);
387 for (job
= job_table
; job
< job_table_end
; job
++) {
388 fprintf(debug_file
, "job %d, status %d, flags %d, pid %d\n",
389 (int)(job
- job_table
), job
->job_state
, job
->flags
, job
->pid
);
394 * Delete the target of a failed, interrupted, or otherwise
395 * unsuccessful job unless inhibited by .PRECIOUS.
398 JobDeleteTarget(GNode
*gn
)
400 if ((gn
->type
& (OP_JOIN
|OP_PHONY
)) == 0 && !Targ_Precious(gn
)) {
401 char *file
= (gn
->path
== NULL
? gn
->name
: gn
->path
);
402 if (!noExecute
&& eunlink(file
) != -1) {
403 Error("*** %s removed", file
);
409 * JobSigLock/JobSigUnlock
411 * Signal lock routines to get exclusive access. Currently used to
412 * protect `jobs' and `stoppedJobs' list manipulations.
414 static void JobSigLock(sigset_t
*omaskp
)
416 if (sigprocmask(SIG_BLOCK
, &caught_signals
, omaskp
) != 0) {
417 Punt("JobSigLock: sigprocmask: %s", strerror(errno
));
422 static void JobSigUnlock(sigset_t
*omaskp
)
424 (void)sigprocmask(SIG_SETMASK
, omaskp
, NULL
);
428 JobCreatePipe(Job
*job
, int minfd
)
432 if (pipe(job
->jobPipe
) == -1)
433 Punt("Cannot create pipe: %s", strerror(errno
));
435 for (i
= 0; i
< 2; i
++) {
436 /* Avoid using low numbered fds */
437 fd
= fcntl(job
->jobPipe
[i
], F_DUPFD
, minfd
);
439 close(job
->jobPipe
[i
]);
440 job
->jobPipe
[i
] = fd
;
444 /* Set close-on-exec flag for both */
445 if (fcntl(job
->jobPipe
[0], F_SETFD
, FD_CLOEXEC
) == -1)
446 Punt("Cannot set close-on-exec: %s", strerror(errno
));
447 if (fcntl(job
->jobPipe
[1], F_SETFD
, FD_CLOEXEC
) == -1)
448 Punt("Cannot set close-on-exec: %s", strerror(errno
));
451 * We mark the input side of the pipe non-blocking; we poll(2) the
452 * pipe when we're waiting for a job token, but we might lose the
453 * race for the token when a new one becomes available, so the read
454 * from the pipe should not block.
456 flags
= fcntl(job
->jobPipe
[0], F_GETFL
, 0);
458 Punt("Cannot get flags: %s", strerror(errno
));
460 if (fcntl(job
->jobPipe
[0], F_SETFL
, flags
) == -1)
461 Punt("Cannot set flags: %s", strerror(errno
));
465 *-----------------------------------------------------------------------
467 * Pass a signal to a job
470 * signop Signal to send it
473 * None, except the job may bite it.
475 *-----------------------------------------------------------------------
478 JobCondPassSig(int signo
)
483 (void)fprintf(debug_file
, "JobCondPassSig(%d) called.\n", signo
);
486 for (job
= job_table
; job
< job_table_end
; job
++) {
487 if (job
->job_state
!= JOB_ST_RUNNING
)
490 (void)fprintf(debug_file
,
491 "JobCondPassSig passing signal %d to child %d.\n",
494 KILLPG(job
->pid
, signo
);
499 *-----------------------------------------------------------------------
504 * signo The signal number we've received
510 * Sends a token on the child exit pipe to wake us up from
513 *-----------------------------------------------------------------------
516 JobChildSig(int signo MAKE_ATTR_UNUSED
)
518 while (write(childExitJob
.outPipe
, CHILD_EXIT
, 1) == -1 && errno
== EAGAIN
)
524 *-----------------------------------------------------------------------
526 * Resume all stopped jobs.
529 * signo The signal number we've received
535 * Jobs start running again.
537 *-----------------------------------------------------------------------
540 JobContinueSig(int signo MAKE_ATTR_UNUSED
)
543 * Defer sending to SIGCONT to our stopped children until we return
544 * from the signal handler.
546 while (write(childExitJob
.outPipe
, DO_JOB_RESUME
, 1) == -1 &&
552 *-----------------------------------------------------------------------
554 * Pass a signal on to all jobs, then resend to ourselves.
557 * signo The signal number we've received
563 * We die by the same signal.
565 *-----------------------------------------------------------------------
567 MAKE_ATTR_DEAD
static void
568 JobPassSig_int(int signo
)
570 /* Run .INTERRUPT target then exit */
571 JobInterrupt(TRUE
, signo
);
574 MAKE_ATTR_DEAD
static void
575 JobPassSig_term(int signo
)
577 /* Dont run .INTERRUPT target then exit */
578 JobInterrupt(FALSE
, signo
);
582 JobPassSig_suspend(int signo
)
584 sigset_t nmask
, omask
;
585 struct sigaction act
;
587 /* Suppress job started/continued messages */
590 /* Pass the signal onto every job */
591 JobCondPassSig(signo
);
594 * Send ourselves the signal now we've given the message to everyone else.
595 * Note we block everything else possible while we're getting the signal.
596 * This ensures that all our jobs get continued when we wake up before
597 * we take any other signal.
600 sigdelset(&nmask
, signo
);
601 (void)sigprocmask(SIG_SETMASK
, &nmask
, &omask
);
603 act
.sa_handler
= SIG_DFL
;
604 sigemptyset(&act
.sa_mask
);
606 (void)sigaction(signo
, &act
, NULL
);
609 (void)fprintf(debug_file
,
610 "JobPassSig passing signal %d to self.\n", signo
);
613 (void)kill(getpid(), signo
);
616 * We've been continued.
618 * A whole host of signals continue to happen!
619 * SIGCHLD for any processes that actually suspended themselves.
620 * SIGCHLD for any processes that exited while we were alseep.
621 * The SIGCONT that actually caused us to wakeup.
623 * Since we defer passing the SIGCONT on to our children until
624 * the main processing loop, we can be sure that all the SIGCHLD
625 * events will have happened by then - and that the waitpid() will
626 * collect the child 'suspended' events.
627 * For correct sequencing we just need to ensure we process the
628 * waitpid() before passign on the SIGCONT.
630 * In any case nothing else is needed here.
633 /* Restore handler and signal mask */
634 act
.sa_handler
= JobPassSig_suspend
;
635 (void)sigaction(signo
, &act
, NULL
);
636 (void)sigprocmask(SIG_SETMASK
, &omask
, NULL
);
640 *-----------------------------------------------------------------------
642 * Compare the pid of the job with the given pid and return 0 if they
643 * are equal. This function is called from Job_CatchChildren
644 * to find the job descriptor of the finished job.
648 * pid process id desired
651 * Job with matching pid
655 *-----------------------------------------------------------------------
658 JobFindPid(int pid
, int status
, Boolean isJobs
)
662 for (job
= job_table
; job
< job_table_end
; job
++) {
663 if ((job
->job_state
== status
) && job
->pid
== pid
)
666 if (DEBUG(JOB
) && isJobs
)
667 job_table_dump("no pid");
672 *-----------------------------------------------------------------------
674 * Put out another command for the given job. If the command starts
675 * with an @ or a - we process it specially. In the former case,
676 * so long as the -s and -n flags weren't given to make, we stick
677 * a shell-specific echoOff command in the script. In the latter,
678 * we ignore errors for the entire job, unless the shell has error
680 * If the command is just "..." we take all future commands for this
681 * job to be commands to be executed once the entire graph has been
682 * made and return non-zero to signal that the end of the commands
683 * was reached. These commands are later attached to the postCommands
684 * node and executed by Job_End when all things are done.
685 * This function is called from JobStart via Lst_ForEach.
688 * cmdp command string to print
689 * jobp job for which to print it
692 * Always 0, unless the command was "..."
695 * If the command begins with a '-' and the shell has no error control,
696 * the JOB_IGNERR flag is set in the job descriptor.
697 * If the command is "..." and we're not ignoring such things,
698 * tailCmds is set to the successor node of the cmd.
699 * numCommands is incremented if the command is actually printed.
700 *-----------------------------------------------------------------------
703 JobPrintCommand(void *cmdp
, void *jobp
)
705 Boolean noSpecials
; /* true if we shouldn't worry about
706 * inserting special commands into
707 * the input stream. */
708 Boolean shutUp
= FALSE
; /* true if we put a no echo command
709 * into the command file */
710 Boolean errOff
= FALSE
; /* true if we turned error checking
711 * off before printing the command
712 * and need to turn it back on */
713 const char *cmdTemplate
; /* Template to use when printing the
715 char *cmdStart
; /* Start of expanded command */
716 char *escCmd
= NULL
; /* Command with quotes/backticks escaped */
717 char *cmd
= (char *)cmdp
;
718 Job
*job
= (Job
*)jobp
;
721 noSpecials
= NoExecute(job
->node
);
723 if (strcmp(cmd
, "...") == 0) {
724 job
->node
->type
|= OP_SAVE_CMDS
;
725 if ((job
->flags
& JOB_IGNDOTS
) == 0) {
726 job
->tailCmds
= Lst_Succ(Lst_Member(job
->node
->commands
,
733 #define DBPRINTF(fmt, arg) if (DEBUG(JOB)) { \
734 (void)fprintf(debug_file, fmt, arg); \
736 (void)fprintf(job->cmdFILE, fmt, arg); \
737 (void)fflush(job->cmdFILE);
741 cmdStart
= cmd
= Var_Subst(NULL
, cmd
, job
->node
, VARF_WANTRES
);
743 cmdTemplate
= "%s\n";
746 * Check for leading @' and -'s to control echoing and error checking.
748 while (*cmd
== '@' || *cmd
== '-' || (*cmd
== '+')) {
751 shutUp
= DEBUG(LOUD
) ? FALSE
: TRUE
;
759 * We're not actually executing anything...
760 * but this one needs to be - use compat mode just for it.
762 CompatRunCommand(cmdp
, job
->node
);
771 while (isspace((unsigned char) *cmd
))
775 * If the shell doesn't have error control the alternate echo'ing will
776 * be done (to avoid showing additional error checking code)
777 * and this will need the characters '$ ` \ "' escaped
780 if (!commandShell
->hasErrCtl
) {
781 /* Worst that could happen is every char needs escaping. */
782 escCmd
= bmake_malloc((strlen(cmd
) * 2) + 1);
783 for (i
= 0, j
= 0; cmd
[i
] != '\0'; i
++, j
++) {
784 if (cmd
[i
] == '$' || cmd
[i
] == '`' || cmd
[i
] == '\\' ||
793 if (!(job
->flags
& JOB_SILENT
) && !noSpecials
&&
794 commandShell
->hasEchoCtl
) {
795 DBPRINTF("%s\n", commandShell
->echoOff
);
797 if (commandShell
->hasErrCtl
)
804 if (commandShell
->hasErrCtl
) {
806 * we don't want the error-control commands showing
807 * up either, so we turn off echoing while executing
808 * them. We could put another field in the shell
809 * structure to tell JobDoOutput to look for this
810 * string too, but why make it any more complex than
813 if (!(job
->flags
& JOB_SILENT
) && !shutUp
&&
814 commandShell
->hasEchoCtl
) {
815 DBPRINTF("%s\n", commandShell
->echoOff
);
816 DBPRINTF("%s\n", commandShell
->ignErr
);
817 DBPRINTF("%s\n", commandShell
->echoOn
);
819 DBPRINTF("%s\n", commandShell
->ignErr
);
821 } else if (commandShell
->ignErr
&&
822 (*commandShell
->ignErr
!= '\0'))
825 * The shell has no error control, so we need to be
826 * weird to get it to ignore any errors from the command.
827 * If echoing is turned on, we turn it off and use the
828 * errCheck template to echo the command. Leave echoing
829 * off so the user doesn't see the weirdness we go through
830 * to ignore errors. Set cmdTemplate to use the weirdness
831 * instead of the simple "%s\n" template.
833 job
->flags
|= JOB_IGNERR
;
834 if (!(job
->flags
& JOB_SILENT
) && !shutUp
) {
835 if (commandShell
->hasEchoCtl
) {
836 DBPRINTF("%s\n", commandShell
->echoOff
);
838 DBPRINTF(commandShell
->errCheck
, escCmd
);
842 DBPRINTF(commandShell
->errCheck
, escCmd
);
845 cmdTemplate
= commandShell
->ignErr
;
847 * The error ignoration (hee hee) is already taken care
848 * of by the ignErr template, so pretend error checking
861 * If errors are being checked and the shell doesn't have error control
862 * but does supply an errOut template, then setup commands to run
866 if (!commandShell
->hasErrCtl
&& commandShell
->errOut
&&
867 (*commandShell
->errOut
!= '\0')) {
868 if (!(job
->flags
& JOB_SILENT
) && !shutUp
) {
869 if (commandShell
->hasEchoCtl
) {
870 DBPRINTF("%s\n", commandShell
->echoOff
);
872 DBPRINTF(commandShell
->errCheck
, escCmd
);
875 /* If it's a comment line or blank, treat as an ignored error */
876 if ((escCmd
[0] == commandShell
->commentChar
) ||
878 cmdTemplate
= commandShell
->ignErr
;
880 cmdTemplate
= commandShell
->errOut
;
885 if (DEBUG(SHELL
) && strcmp(shellName
, "sh") == 0 &&
886 (job
->flags
& JOB_TRACED
) == 0) {
887 DBPRINTF("set -%s\n", "x");
888 job
->flags
|= JOB_TRACED
;
891 DBPRINTF(cmdTemplate
, cmd
);
896 * If echoing is already off, there's no point in issuing the
897 * echoOff command. Otherwise we issue it and pretend it was on
898 * for the whole command...
900 if (!shutUp
&& !(job
->flags
& JOB_SILENT
) && commandShell
->hasEchoCtl
){
901 DBPRINTF("%s\n", commandShell
->echoOff
);
904 DBPRINTF("%s\n", commandShell
->errCheck
);
906 if (shutUp
&& commandShell
->hasEchoCtl
) {
907 DBPRINTF("%s\n", commandShell
->echoOn
);
913 *-----------------------------------------------------------------------
915 * Save a command to be executed when everything else is done.
916 * Callback function for JobFinish...
922 * The command is tacked onto the end of postCommands's commands list.
924 *-----------------------------------------------------------------------
927 JobSaveCommand(void *cmd
, void *gn
)
929 cmd
= Var_Subst(NULL
, (char *)cmd
, (GNode
*)gn
, VARF_WANTRES
);
930 (void)Lst_AtEnd(postCommands
->commands
, cmd
);
936 *-----------------------------------------------------------------------
938 * Called to close both input and output pipes when a job is finished.
944 * The file descriptors associated with the job are closed.
946 *-----------------------------------------------------------------------
952 (void)close(job
->outPipe
);
955 JobDoOutput(job
, TRUE
);
956 (void)close(job
->inPipe
);
961 *-----------------------------------------------------------------------
963 * Do final processing for the given job including updating
964 * parents and starting new jobs as available/necessary. Note
965 * that we pay no attention to the JOB_IGNERR flag here.
966 * This is because when we're called because of a noexecute flag
967 * or something, jstat.w_status is 0 and when called from
968 * Job_CatchChildren, the status is zeroed if it s/b ignored.
972 * status sub-why job went away
978 * Final commands for the job are placed on postCommands.
980 * If we got an error and are aborting (aborting == ABORT_ERROR) and
981 * the job list is now empty, we are done for the day.
982 * If we recognized an error (errors !=0), we set the aborting flag
983 * to ABORT_ERROR so no more jobs will be started.
984 *-----------------------------------------------------------------------
988 JobFinish (Job
*job
, WAIT_T status
)
990 Boolean done
, return_job_token
;
993 fprintf(debug_file
, "Jobfinish: %d [%s], status %d\n",
994 job
->pid
, job
->node
->name
, status
);
997 if ((WIFEXITED(status
) &&
998 (((WEXITSTATUS(status
) != 0) && !(job
->flags
& JOB_IGNERR
)))) ||
1002 * If it exited non-zero and either we're doing things our
1003 * way or we're not ignoring errors, the job is finished.
1004 * Similarly, if the shell died because of a signal
1005 * the job is also finished. In these
1006 * cases, finish out the job's output before printing the exit
1010 if (job
->cmdFILE
!= NULL
&& job
->cmdFILE
!= stdout
) {
1011 (void)fclose(job
->cmdFILE
);
1012 job
->cmdFILE
= NULL
;
1015 } else if (WIFEXITED(status
)) {
1017 * Deal with ignored errors in -B mode. We need to print a message
1018 * telling of the ignored error as well as setting status.w_status
1019 * to 0 so the next command gets run. To do this, we set done to be
1020 * TRUE if in -B mode and the job exited non-zero.
1022 done
= WEXITSTATUS(status
) != 0;
1024 * Old comment said: "Note we don't
1025 * want to close down any of the streams until we know we're at the
1027 * But we do. Otherwise when are we going to print the rest of the
1033 * No need to close things down or anything.
1039 if (WIFEXITED(status
)) {
1041 (void)fprintf(debug_file
, "Process %d [%s] exited.\n",
1042 job
->pid
, job
->node
->name
);
1044 if (WEXITSTATUS(status
) != 0) {
1045 if (job
->node
!= lastNode
) {
1046 MESSAGE(stdout
, job
->node
);
1047 lastNode
= job
->node
;
1051 meta_job_error(job
, job
->node
, job
->flags
, WEXITSTATUS(status
));
1054 (void)fprintf(stderr
, "*** [%s] Error code %d%s\n",
1056 WEXITSTATUS(status
),
1057 (job
->flags
& JOB_IGNERR
) ? " (ignored)" : "");
1058 if (job
->flags
& JOB_IGNERR
) {
1059 WAIT_STATUS(status
) = 0;
1061 if (deleteOnError
) {
1062 JobDeleteTarget(job
->node
);
1064 PrintOnError(job
->node
, NULL
);
1066 } else if (DEBUG(JOB
)) {
1067 if (job
->node
!= lastNode
) {
1068 MESSAGE(stdout
, job
->node
);
1069 lastNode
= job
->node
;
1071 (void)fprintf(stderr
, "*** [%s] Completed successfully\n",
1075 if (job
->node
!= lastNode
) {
1076 MESSAGE(stdout
, job
->node
);
1077 lastNode
= job
->node
;
1079 (void)fprintf(stderr
, "*** [%s] Signal %d\n",
1080 job
->node
->name
, WTERMSIG(status
));
1081 if (deleteOnError
) {
1082 JobDeleteTarget(job
->node
);
1085 (void)fflush(stdout
);
1092 if ((x
= meta_job_finish(job
)) != 0 && status
== 0) {
1098 return_job_token
= FALSE
;
1100 Trace_Log(JOBEND
, job
);
1101 if (!(job
->flags
& JOB_SPECIAL
)) {
1102 if ((WAIT_STATUS(status
) != 0) ||
1103 (aborting
== ABORT_ERROR
) ||
1104 (aborting
== ABORT_INTERRUPT
))
1105 return_job_token
= TRUE
;
1108 if ((aborting
!= ABORT_ERROR
) && (aborting
!= ABORT_INTERRUPT
) &&
1109 (WAIT_STATUS(status
) == 0)) {
1111 * As long as we aren't aborting and the job didn't return a non-zero
1112 * status that we shouldn't ignore, we call Make_Update to update
1113 * the parents. In addition, any saved commands for the node are placed
1114 * on the .END target.
1116 if (job
->tailCmds
!= NULL
) {
1117 Lst_ForEachFrom(job
->node
->commands
, job
->tailCmds
,
1121 job
->node
->made
= MADE
;
1122 if (!(job
->flags
& JOB_SPECIAL
))
1123 return_job_token
= TRUE
;
1124 Make_Update(job
->node
);
1125 job
->job_state
= JOB_ST_FREE
;
1126 } else if (WAIT_STATUS(status
)) {
1128 job
->job_state
= JOB_ST_FREE
;
1132 * Set aborting if any error.
1134 if (errors
&& !keepgoing
&& (aborting
!= ABORT_INTERRUPT
)) {
1136 * If we found any errors in this batch of children and the -k flag
1137 * wasn't given, we set the aborting flag so no more jobs get
1140 aborting
= ABORT_ERROR
;
1143 if (return_job_token
)
1146 if (aborting
== ABORT_ERROR
&& jobTokensRunning
== 0) {
1148 * If we are aborting and the job table is now empty, we finish.
1155 *-----------------------------------------------------------------------
1157 * Touch the given target. Called by JobStart when the -t flag was
1161 * gn the node of the file to touch
1162 * silent TRUE if should not print message
1168 * The data modification of the file is changed. In addition, if the
1169 * file did not exist, it is created.
1170 *-----------------------------------------------------------------------
1173 Job_Touch(GNode
*gn
, Boolean silent
)
1175 int streamID
; /* ID of stream opened to do the touch */
1176 struct utimbuf times
; /* Times for utime() call */
1178 if (gn
->type
& (OP_JOIN
|OP_USE
|OP_USEBEFORE
|OP_EXEC
|OP_OPTIONAL
|
1179 OP_SPECIAL
|OP_PHONY
)) {
1181 * .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual" targets
1182 * and, as such, shouldn't really be created.
1187 if (!silent
|| NoExecute(gn
)) {
1188 (void)fprintf(stdout
, "touch %s\n", gn
->name
);
1189 (void)fflush(stdout
);
1192 if (NoExecute(gn
)) {
1196 if (gn
->type
& OP_ARCHV
) {
1198 } else if (gn
->type
& OP_LIB
) {
1201 char *file
= gn
->path
? gn
->path
: gn
->name
;
1203 times
.actime
= times
.modtime
= now
;
1204 if (utime(file
, ×
) < 0){
1205 streamID
= open(file
, O_RDWR
| O_CREAT
, 0666);
1207 if (streamID
>= 0) {
1211 * Read and write a byte to the file to change the
1212 * modification time, then close the file.
1214 if (read(streamID
, &c
, 1) == 1) {
1215 (void)lseek(streamID
, (off_t
)0, SEEK_SET
);
1216 while (write(streamID
, &c
, 1) == -1 && errno
== EAGAIN
)
1220 (void)close(streamID
);
1222 (void)fprintf(stderr
, "*** couldn't touch %s: %s\n",
1223 file
, strerror(errno
));
1224 (void)fflush(stderr
);
1231 *-----------------------------------------------------------------------
1232 * Job_CheckCommands --
1233 * Make sure the given node has all the commands it needs.
1236 * gn The target whose commands need verifying
1237 * abortProc Function to abort with message
1240 * TRUE if the commands list is/was ok.
1243 * The node will have commands from the .DEFAULT rule added to it
1245 *-----------------------------------------------------------------------
1248 Job_CheckCommands(GNode
*gn
, void (*abortProc
)(const char *, ...))
1250 if (OP_NOP(gn
->type
) && Lst_IsEmpty(gn
->commands
) &&
1251 ((gn
->type
& OP_LIB
) == 0 || Lst_IsEmpty(gn
->children
))) {
1253 * No commands. Look for .DEFAULT rule from which we might infer
1256 if ((DEFAULT
!= NULL
) && !Lst_IsEmpty(DEFAULT
->commands
) &&
1257 (gn
->type
& OP_SPECIAL
) == 0) {
1260 * Make only looks for a .DEFAULT if the node was never the
1261 * target of an operator, so that's what we do too. If
1262 * a .DEFAULT was given, we substitute its commands for gn's
1263 * commands and set the IMPSRC variable to be the target's name
1264 * The DEFAULT node acts like a transformation rule, in that
1265 * gn also inherits any attributes or sources attached to
1268 Make_HandleUse(DEFAULT
, gn
);
1269 Var_Set(IMPSRC
, Var_Value(TARGET
, gn
, &p1
), gn
, 0);
1271 } else if (Dir_MTime(gn
, 0) == 0 && (gn
->type
& OP_SPECIAL
) == 0) {
1273 * The node wasn't the target of an operator we have no .DEFAULT
1274 * rule to go on and the target doesn't already exist. There's
1275 * nothing more we can do for this branch. If the -k flag wasn't
1276 * given, we stop in our tracks, otherwise we just don't update
1277 * this node's parents so they never get examined.
1279 static const char msg
[] = ": don't know how to make";
1281 if (gn
->flags
& FROM_DEPEND
) {
1282 if (!Job_RunTarget(".STALE", gn
->fname
))
1283 fprintf(stdout
, "%s: %s, %d: ignoring stale %s for %s\n",
1284 progname
, gn
->fname
, gn
->lineno
, makeDependfile
,
1289 if (gn
->type
& OP_OPTIONAL
) {
1290 (void)fprintf(stdout
, "%s%s %s (ignored)\n", progname
,
1292 (void)fflush(stdout
);
1293 } else if (keepgoing
) {
1294 (void)fprintf(stdout
, "%s%s %s (continuing)\n", progname
,
1296 (void)fflush(stdout
);
1299 (*abortProc
)("%s%s %s. Stop", progname
, msg
, gn
->name
);
1308 *-----------------------------------------------------------------------
1310 * Execute the shell for the given job. Called from JobStart
1313 * job Job to execute
1319 * A shell is executed, outputs is altered and the Job structure added
1322 *-----------------------------------------------------------------------
1325 JobExec(Job
*job
, char **argv
)
1327 int cpid
; /* ID of new child */
1330 job
->flags
&= ~JOB_TRACED
;
1335 (void)fprintf(debug_file
, "Running %s %sly\n", job
->node
->name
, "local");
1336 (void)fprintf(debug_file
, "\tCommand: ");
1337 for (i
= 0; argv
[i
] != NULL
; i
++) {
1338 (void)fprintf(debug_file
, "%s ", argv
[i
]);
1340 (void)fprintf(debug_file
, "\n");
1344 * Some jobs produce no output and it's disconcerting to have
1345 * no feedback of their running (since they produce no output, the
1346 * banner with their name in it never appears). This is an attempt to
1347 * provide that feedback, even if nothing follows it.
1349 if ((lastNode
!= job
->node
) && !(job
->flags
& JOB_SILENT
)) {
1350 MESSAGE(stdout
, job
->node
);
1351 lastNode
= job
->node
;
1354 /* No interruptions until this job is on the `jobs' list */
1357 /* Pre-emptively mark job running, pid still zero though */
1358 job
->job_state
= JOB_ST_RUNNING
;
1362 Punt("Cannot vfork: %s", strerror(errno
));
1370 meta_job_child(job
);
1374 * Reset all signal handlers; this is necessary because we also
1375 * need to unblock signals before we exec(2).
1379 /* Now unblock signals */
1380 sigemptyset(&tmask
);
1381 JobSigUnlock(&tmask
);
1384 * Must duplicate the input stream down to the child's input and
1385 * reset it to the beginning (again). Since the stream was marked
1386 * close-on-exec, we must clear that bit in the new input.
1388 if (dup2(FILENO(job
->cmdFILE
), 0) == -1) {
1389 execError("dup2", "job->cmdFILE");
1392 if (fcntl(0, F_SETFD
, 0) == -1) {
1393 execError("fcntl clear close-on-exec", "stdin");
1396 if (lseek(0, (off_t
)0, SEEK_SET
) == -1) {
1397 execError("lseek to 0", "stdin");
1401 if (job
->node
->type
& (OP_MAKE
| OP_SUBMAKE
)) {
1403 * Pass job token pipe to submakes.
1405 if (fcntl(tokenWaitJob
.inPipe
, F_SETFD
, 0) == -1) {
1406 execError("clear close-on-exec", "tokenWaitJob.inPipe");
1409 if (fcntl(tokenWaitJob
.outPipe
, F_SETFD
, 0) == -1) {
1410 execError("clear close-on-exec", "tokenWaitJob.outPipe");
1416 * Set up the child's output to be routed through the pipe
1417 * we've created for it.
1419 if (dup2(job
->outPipe
, 1) == -1) {
1420 execError("dup2", "job->outPipe");
1423 if (fcntl(1, F_SETFD
, 0) == -1) {
1424 execError("clear close-on-exec", "stdout");
1429 * We want to switch the child into a different process family so
1430 * we can kill it and all its descendants in one fell swoop,
1431 * by killing its process family, but not commit suicide.
1433 #if defined(HAVE_SETPGID)
1434 (void)setpgid(0, getpid());
1436 #if defined(HAVE_SETSID)
1437 /* XXX: dsl - I'm sure this should be setpgrp()... */
1440 (void)setpgrp(0, getpid());
1446 (void)execv(shellPath
, argv
);
1447 execError("exec", shellPath
);
1451 /* Parent, continuing after the child exec */
1454 Trace_Log(JOBSTART
, job
);
1457 * Set the current position in the buffer to the beginning
1458 * and mark another stream to watch in the outputs mask
1464 if (job
->cmdFILE
!= NULL
&& job
->cmdFILE
!= stdout
) {
1465 (void)fclose(job
->cmdFILE
);
1466 job
->cmdFILE
= NULL
;
1470 * Now the job is actually running, add it to the table.
1473 fprintf(debug_file
, "JobExec(%s): pid %d added to jobs table\n",
1474 job
->node
->name
, job
->pid
);
1475 job_table_dump("job started");
1477 JobSigUnlock(&mask
);
1481 *-----------------------------------------------------------------------
1483 * Create the argv needed to execute the shell for a given job.
1490 *-----------------------------------------------------------------------
1493 JobMakeArgv(Job
*job
, char **argv
)
1496 static char args
[10]; /* For merged arguments */
1498 argv
[0] = UNCONST(shellName
);
1501 if ((commandShell
->exit
&& (*commandShell
->exit
!= '-')) ||
1502 (commandShell
->echo
&& (*commandShell
->echo
!= '-')))
1505 * At least one of the flags doesn't have a minus before it, so
1506 * merge them together. Have to do this because the *(&(@*#*&#$#
1507 * Bourne shell thinks its second argument is a file to source.
1508 * Grrrr. Note the ten-character limitation on the combined arguments.
1510 (void)snprintf(args
, sizeof(args
), "-%s%s",
1511 ((job
->flags
& JOB_IGNERR
) ? "" :
1512 (commandShell
->exit
? commandShell
->exit
: "")),
1513 ((job
->flags
& JOB_SILENT
) ? "" :
1514 (commandShell
->echo
? commandShell
->echo
: "")));
1521 if (!(job
->flags
& JOB_IGNERR
) && commandShell
->exit
) {
1522 argv
[argc
] = UNCONST(commandShell
->exit
);
1525 if (!(job
->flags
& JOB_SILENT
) && commandShell
->echo
) {
1526 argv
[argc
] = UNCONST(commandShell
->echo
);
1534 *-----------------------------------------------------------------------
1536 * Start a target-creation process going for the target described
1537 * by the graph node gn.
1540 * gn target to create
1541 * flags flags for the job to override normal ones.
1542 * e.g. JOB_SPECIAL or JOB_IGNDOTS
1543 * previous The previous Job structure for this node, if any.
1546 * JOB_ERROR if there was an error in the commands, JOB_FINISHED
1547 * if there isn't actually anything left to do for the job and
1548 * JOB_RUNNING if the job has been started.
1551 * A new Job node is created and added to the list of running
1552 * jobs. PMake is forked and a child shell created.
1554 * NB: I'm fairly sure that this code is never called with JOB_SPECIAL set
1555 * JOB_IGNDOTS is never set (dsl)
1556 * Also the return value is ignored by everyone.
1557 *-----------------------------------------------------------------------
1560 JobStart(GNode
*gn
, int flags
)
1562 Job
*job
; /* new job descriptor */
1563 char *argv
[10]; /* Argument vector to shell */
1564 Boolean cmdsOK
; /* true if the nodes commands were all right */
1565 Boolean noExec
; /* Set true if we decide not to run the job */
1566 int tfd
; /* File descriptor to the temp file */
1568 for (job
= job_table
; job
< job_table_end
; job
++) {
1569 if (job
->job_state
== JOB_ST_FREE
)
1572 if (job
>= job_table_end
)
1573 Punt("JobStart no job slots vacant");
1575 memset(job
, 0, sizeof *job
);
1576 job
->job_state
= JOB_ST_SETUP
;
1577 if (gn
->type
& OP_SPECIAL
)
1578 flags
|= JOB_SPECIAL
;
1581 job
->tailCmds
= NULL
;
1584 * Set the initial value of the flags for this job based on the global
1585 * ones and the node's attributes... Any flags supplied by the caller
1586 * are also added to the field.
1589 if (Targ_Ignore(gn
)) {
1590 job
->flags
|= JOB_IGNERR
;
1592 if (Targ_Silent(gn
)) {
1593 job
->flags
|= JOB_SILENT
;
1595 job
->flags
|= flags
;
1598 * Check the commands now so any attributes from .DEFAULT have a chance
1599 * to migrate to the node
1601 cmdsOK
= Job_CheckCommands(gn
, Error
);
1603 job
->inPollfd
= NULL
;
1605 * If the -n flag wasn't given, we open up OUR (not the child's)
1606 * temporary file to stuff commands in it. The thing is rd/wr so we don't
1607 * need to reopen it to feed it to the shell. If the -n flag *was* given,
1608 * we just set the file to be stdout. Cute, huh?
1610 if (((gn
->type
& OP_MAKE
) && !(noRecursiveExecute
)) ||
1611 (!noExecute
&& !touchFlag
)) {
1613 * tfile is the name of a file into which all shell commands are
1614 * put. It is removed before the child shell is executed, unless
1615 * DEBUG(SCRIPT) is set.
1620 * We're serious here, but if the commands were bogus, we're
1624 PrintOnError(gn
, NULL
); /* provide some clue */
1629 tfd
= mkTempFile(TMPPAT
, &tfile
);
1631 (void)eunlink(tfile
);
1632 JobSigUnlock(&mask
);
1634 job
->cmdFILE
= fdopen(tfd
, "w+");
1635 if (job
->cmdFILE
== NULL
) {
1636 Punt("Could not fdopen %s", tfile
);
1638 (void)fcntl(FILENO(job
->cmdFILE
), F_SETFD
, FD_CLOEXEC
);
1640 * Send the commands to the command file, flush all its buffers then
1641 * rewind and remove the thing.
1647 meta_job_start(job
, gn
);
1648 if (Targ_Silent(gn
)) { /* might have changed */
1649 job
->flags
|= JOB_SILENT
;
1654 * We can do all the commands at once. hooray for sanity
1657 Lst_ForEach(gn
->commands
, JobPrintCommand
, job
);
1660 * If we didn't print out any commands to the shell script,
1661 * there's not much point in executing the shell, is there?
1663 if (numCommands
== 0) {
1668 } else if (NoExecute(gn
)) {
1670 * Not executing anything -- just print all the commands to stdout
1671 * in one fell swoop. This will still set up job->tailCmds correctly.
1673 if (lastNode
!= gn
) {
1674 MESSAGE(stdout
, gn
);
1677 job
->cmdFILE
= stdout
;
1679 * Only print the commands if they're ok, but don't die if they're
1680 * not -- just let the user know they're bad and keep going. It
1681 * doesn't do any harm in this case and may do some good.
1684 Lst_ForEach(gn
->commands
, JobPrintCommand
, job
);
1687 * Don't execute the shell, thank you.
1692 * Just touch the target and note that no shell should be executed.
1693 * Set cmdFILE to stdout to make life easier. Check the commands, too,
1694 * but don't die if they're no good -- it does no harm to keep working
1697 job
->cmdFILE
= stdout
;
1698 Job_Touch(gn
, job
->flags
&JOB_SILENT
);
1701 /* Just in case it isn't already... */
1702 (void)fflush(job
->cmdFILE
);
1705 * If we're not supposed to execute a shell, don't.
1708 if (!(job
->flags
& JOB_SPECIAL
))
1711 * Unlink and close the command file if we opened one
1713 if (job
->cmdFILE
!= stdout
) {
1714 if (job
->cmdFILE
!= NULL
) {
1715 (void)fclose(job
->cmdFILE
);
1716 job
->cmdFILE
= NULL
;
1721 * We only want to work our way up the graph if we aren't here because
1722 * the commands for the job were no good.
1724 if (cmdsOK
&& aborting
== 0) {
1725 if (job
->tailCmds
!= NULL
) {
1726 Lst_ForEachFrom(job
->node
->commands
, job
->tailCmds
,
1730 job
->node
->made
= MADE
;
1731 Make_Update(job
->node
);
1733 job
->job_state
= JOB_ST_FREE
;
1734 return cmdsOK
? JOB_FINISHED
: JOB_ERROR
;
1738 * Set up the control arguments to the shell. This is based on the flags
1739 * set earlier for this job.
1741 JobMakeArgv(job
, argv
);
1743 /* Create the pipe by which we'll get the shell's output. */
1744 JobCreatePipe(job
, 3);
1747 return(JOB_RUNNING
);
1751 JobOutput(Job
*job
, char *cp
, char *endp
, int msg
)
1755 if (commandShell
->noPrint
) {
1756 ecp
= Str_FindSubstring(cp
, commandShell
->noPrint
);
1757 while (ecp
!= NULL
) {
1760 if (!beSilent
&& msg
&& job
->node
!= lastNode
) {
1761 MESSAGE(stdout
, job
->node
);
1762 lastNode
= job
->node
;
1765 * The only way there wouldn't be a newline after
1766 * this line is if it were the last in the buffer.
1767 * however, since the non-printable comes after it,
1768 * there must be a newline, so we don't print one.
1770 (void)fprintf(stdout
, "%s", cp
);
1771 (void)fflush(stdout
);
1773 cp
= ecp
+ commandShell
->noPLen
;
1776 * Still more to print, look again after skipping
1777 * the whitespace following the non-printable
1781 while (*cp
== ' ' || *cp
== '\t' || *cp
== '\n') {
1784 ecp
= Str_FindSubstring(cp
, commandShell
->noPrint
);
1794 *-----------------------------------------------------------------------
1796 * This function is called at different times depending on
1797 * whether the user has specified that output is to be collected
1798 * via pipes or temporary files. In the former case, we are called
1799 * whenever there is something to read on the pipe. We collect more
1800 * output from the given job and store it in the job's outBuf. If
1801 * this makes up a line, we print it tagged by the job's identifier,
1803 * If output has been collected in a temporary file, we open the
1804 * file and read it line by line, transfering it to our own
1805 * output channel until the file is empty. At which point we
1806 * remove the temporary file.
1807 * In both cases, however, we keep our figurative eye out for the
1808 * 'noPrint' line for the shell from which the output came. If
1809 * we recognize a line, we don't print it. If the command is not
1810 * alone on the line (the character after it is not \0 or \n), we
1811 * do print whatever follows it.
1814 * job the job whose output needs printing
1815 * finish TRUE if this is the last time we'll be called
1822 * curPos may be shifted as may the contents of outBuf.
1823 *-----------------------------------------------------------------------
1826 JobDoOutput(Job
*job
, Boolean finish
)
1828 Boolean gotNL
= FALSE
; /* true if got a newline */
1829 Boolean fbuf
; /* true if our buffer filled up */
1830 int nr
; /* number of bytes read */
1831 int i
; /* auxiliary index into outBuf */
1832 int max
; /* limit for i (end of current data) */
1833 int nRead
; /* (Temporary) number of bytes read */
1836 * Read as many bytes as will fit in the buffer.
1842 nRead
= read(job
->inPipe
, &job
->outBuf
[job
->curPos
],
1843 JOB_BUFSIZE
- job
->curPos
);
1845 if (errno
== EAGAIN
)
1848 perror("JobDoOutput(piperead)");
1856 * If we hit the end-of-file (the job is dead), we must flush its
1857 * remaining output, so pretend we read a newline if there's any
1858 * output remaining in the buffer.
1859 * Also clear the 'finish' flag so we stop looping.
1861 if ((nr
== 0) && (job
->curPos
!= 0)) {
1862 job
->outBuf
[job
->curPos
] = '\n';
1865 } else if (nr
== 0) {
1870 * Look for the last newline in the bytes we just got. If there is
1871 * one, break out of the loop with 'i' as its index and gotNL set
1874 max
= job
->curPos
+ nr
;
1875 for (i
= job
->curPos
+ nr
- 1; i
>= job
->curPos
; i
--) {
1876 if (job
->outBuf
[i
] == '\n') {
1879 } else if (job
->outBuf
[i
] == '\0') {
1883 job
->outBuf
[i
] = ' ';
1889 if (job
->curPos
== JOB_BUFSIZE
) {
1891 * If we've run out of buffer space, we have no choice
1892 * but to print the stuff. sigh.
1898 if (gotNL
|| fbuf
) {
1900 * Need to send the output to the screen. Null terminate it
1901 * first, overwriting the newline character if there was one.
1902 * So long as the line isn't one we should filter (according
1903 * to the shell description), we print the line, preceded
1904 * by a target banner if this target isn't the same as the
1905 * one for which we last printed something.
1906 * The rest of the data in the buffer are then shifted down
1907 * to the start of the buffer and curPos is set accordingly.
1909 job
->outBuf
[i
] = '\0';
1910 if (i
>= job
->curPos
) {
1913 cp
= JobOutput(job
, job
->outBuf
, &job
->outBuf
[i
], FALSE
);
1916 * There's still more in that thar buffer. This time, though,
1917 * we know there's no newline at the end, so we add one of
1918 * our own free will.
1921 if (!beSilent
&& job
->node
!= lastNode
) {
1922 MESSAGE(stdout
, job
->node
);
1923 lastNode
= job
->node
;
1927 meta_job_output(job
, cp
, gotNL
? "\n" : "");
1930 (void)fprintf(stdout
, "%s%s", cp
, gotNL
? "\n" : "");
1931 (void)fflush(stdout
);
1935 * max is the last offset still in the buffer. Move any remaining
1936 * characters to the start of the buffer and update the end marker
1940 (void)memmove(job
->outBuf
, &job
->outBuf
[i
+ 1], max
- (i
+ 1));
1941 job
->curPos
= max
- (i
+ 1);
1949 * If the finish flag is true, we must loop until we hit
1950 * end-of-file on the pipe. This is guaranteed to happen
1951 * eventually since the other end of the pipe is now closed
1952 * (we closed it explicitly and the child has exited). When
1953 * we do get an EOF, finish will be set FALSE and we'll fall
1965 * Unfortunately it is too complicated to run .BEGIN, .END,
1966 * and .INTERRUPT job in the parallel job module. This has
1967 * the nice side effect that it avoids a lot of other problems.
1969 Lst lst
= Lst_Init(FALSE
);
1970 Lst_AtEnd(lst
, targ
);
1971 (void)Make_Run(lst
);
1972 Lst_Destroy(lst
, NULL
);
1973 JobStart(targ
, JOB_SPECIAL
);
1974 while (jobTokensRunning
) {
1978 Compat_Make(targ
, targ
);
1979 if (targ
->made
== ERROR
) {
1980 PrintOnError(targ
, "\n\nStop.");
1987 *-----------------------------------------------------------------------
1988 * Job_CatchChildren --
1989 * Handle the exit of a child. Called from Make_Make.
1992 * block TRUE if should block on the wait
1998 * The job descriptor is removed from the list of children.
2001 * We do waits, blocking or not, according to the wisdom of our
2002 * caller, until there are no more children to report. For each
2003 * job, call JobFinish to finish things off.
2005 *-----------------------------------------------------------------------
2009 Job_CatchChildren(void)
2011 int pid
; /* pid of dead child */
2012 WAIT_T status
; /* Exit/termination status */
2015 * Don't even bother if we know there's no one around.
2017 if (jobTokensRunning
== 0)
2020 while ((pid
= waitpid((pid_t
) -1, &status
, WNOHANG
| WUNTRACED
)) > 0) {
2022 (void)fprintf(debug_file
, "Process %d exited/stopped status %x.\n", pid
,
2023 WAIT_STATUS(status
));
2025 JobReapChild(pid
, status
, TRUE
);
2030 * It is possible that wait[pid]() was called from elsewhere,
2031 * this lets us reap jobs regardless.
2034 JobReapChild(pid_t pid
, WAIT_T status
, Boolean isJobs
)
2036 Job
*job
; /* job descriptor for dead child */
2039 * Don't even bother if we know there's no one around.
2041 if (jobTokensRunning
== 0)
2044 job
= JobFindPid(pid
, JOB_ST_RUNNING
, isJobs
);
2047 if (!lurking_children
)
2048 Error("Child (%d) status %x not in table?", pid
, status
);
2050 return; /* not ours */
2052 if (WIFSTOPPED(status
)) {
2054 (void)fprintf(debug_file
, "Process %d (%s) stopped.\n",
2055 job
->pid
, job
->node
->name
);
2057 if (!make_suspended
) {
2058 switch (WSTOPSIG(status
)) {
2060 (void)fprintf(stderr
, "*** [%s] Suspended\n", job
->node
->name
);
2063 (void)fprintf(stderr
, "*** [%s] Stopped\n", job
->node
->name
);
2066 (void)fprintf(stderr
, "*** [%s] Stopped -- signal %d\n",
2067 job
->node
->name
, WSTOPSIG(status
));
2069 job
->job_suspended
= 1;
2071 (void)fflush(stdout
);
2075 job
->job_state
= JOB_ST_FINISHED
;
2076 job
->exit_status
= WAIT_STATUS(status
);
2078 JobFinish(job
, status
);
2082 *-----------------------------------------------------------------------
2083 * Job_CatchOutput --
2084 * Catch the output from our children, if we're using
2085 * pipes do so. Otherwise just block time until we get a
2086 * signal(most likely a SIGCHLD) since there's no point in
2087 * just spinning when there's nothing to do and the reaping
2088 * of a child can wait for a while.
2094 * Output is read from pipes if we're piping.
2095 * -----------------------------------------------------------------------
2098 Job_CatchOutput(void)
2104 (void)fflush(stdout
);
2106 /* The first fd in the list is the job token pipe */
2108 nready
= poll(fds
+ 1 - wantToken
, nfds
- 1 + wantToken
, POLL_MSEC
);
2109 } while (nready
< 0 && errno
== EINTR
);
2112 Punt("poll: %s", strerror(errno
));
2114 if (nready
> 0 && readyfd(&childExitJob
)) {
2117 count
= read(childExitJob
.inPipe
, &token
, 1);
2120 Punt("unexpected eof on token pipe");
2122 Punt("token pipe read: %s", strerror(errno
));
2124 if (token
== DO_JOB_RESUME
[0])
2125 /* Complete relay requested from our SIGCONT handler */
2134 Job_CatchChildren();
2138 for (i
= 2; i
< nfds
; i
++) {
2139 if (!fds
[i
].revents
)
2142 if (job
->job_state
== JOB_ST_RUNNING
)
2143 JobDoOutput(job
, FALSE
);
2150 *-----------------------------------------------------------------------
2152 * Start the creation of a target. Basically a front-end for
2153 * JobStart used by the Make module.
2159 * Another job is started.
2161 *-----------------------------------------------------------------------
2166 (void)JobStart(gn
, 0);
2172 if (shellPath
== NULL
) {
2174 * We are using the default shell, which may be an absolute
2175 * path if DEFSHELL_CUSTOM is defined.
2177 shellName
= commandShell
->name
;
2178 #ifdef DEFSHELL_CUSTOM
2179 if (*shellName
== '/') {
2180 shellPath
= shellName
;
2181 shellName
= strrchr(shellPath
, '/');
2185 shellPath
= str_concat(_PATH_DEFSHELLDIR
, shellName
, STR_ADDSLASH
);
2187 if (commandShell
->exit
== NULL
) {
2188 commandShell
->exit
= "";
2190 if (commandShell
->echo
== NULL
) {
2191 commandShell
->echo
= "";
2193 if (commandShell
->hasErrCtl
&& *commandShell
->exit
) {
2195 strcmp(commandShell
->exit
, &shellErrFlag
[1]) != 0) {
2197 shellErrFlag
= NULL
;
2199 if (!shellErrFlag
) {
2200 int n
= strlen(commandShell
->exit
) + 2;
2202 shellErrFlag
= bmake_malloc(n
);
2204 snprintf(shellErrFlag
, n
, "-%s", commandShell
->exit
);
2207 } else if (shellErrFlag
) {
2209 shellErrFlag
= NULL
;
2214 * Returns the string literal that is used in the current command shell
2215 * to produce a newline character.
2218 Shell_GetNewline(void)
2221 return commandShell
->newline
;
2230 } else if (!Var_Exists(MAKE_JOB_PREFIX
, VAR_GLOBAL
)) {
2231 Var_Set(MAKE_JOB_PREFIX
, "---", VAR_GLOBAL
, 0);
2234 targPrefix
= Var_Subst(NULL
, "${" MAKE_JOB_PREFIX
"}",
2235 VAR_GLOBAL
, VARF_WANTRES
);
2239 *-----------------------------------------------------------------------
2241 * Initialize the process module
2249 * lists and counters are initialized
2250 *-----------------------------------------------------------------------
2256 /* Allocate space for all the job info */
2257 job_table
= bmake_malloc(maxJobs
* sizeof *job_table
);
2258 memset(job_table
, 0, maxJobs
* sizeof *job_table
);
2259 job_table_end
= job_table
+ maxJobs
;
2268 * There is a non-zero chance that we already have children.
2269 * eg after 'make -f- <<EOF'
2270 * Since their termination causes a 'Child (pid) not in table' message,
2271 * Collect the status of any that are already dead, and suppress the
2272 * error message if there are any undead ones.
2276 rval
= waitpid((pid_t
) -1, &status
, WNOHANG
);
2280 lurking_children
= 1;
2286 JobCreatePipe(&childExitJob
, 3);
2288 /* We can only need to wait for tokens, children and output from each job */
2289 fds
= bmake_malloc(sizeof (*fds
) * (2 + maxJobs
));
2290 jobfds
= bmake_malloc(sizeof (*jobfds
) * (2 + maxJobs
));
2292 /* These are permanent entries and take slots 0 and 1 */
2293 watchfd(&tokenWaitJob
);
2294 watchfd(&childExitJob
);
2296 sigemptyset(&caught_signals
);
2298 * Install a SIGCHLD handler.
2300 (void)bmake_signal(SIGCHLD
, JobChildSig
);
2301 sigaddset(&caught_signals
, SIGCHLD
);
2303 #define ADDSIG(s,h) \
2304 if (bmake_signal(s, SIG_IGN) != SIG_IGN) { \
2305 sigaddset(&caught_signals, s); \
2306 (void)bmake_signal(s, h); \
2310 * Catch the four signals that POSIX specifies if they aren't ignored.
2311 * JobPassSig will take care of calling JobInterrupt if appropriate.
2313 ADDSIG(SIGINT
, JobPassSig_int
)
2314 ADDSIG(SIGHUP
, JobPassSig_term
)
2315 ADDSIG(SIGTERM
, JobPassSig_term
)
2316 ADDSIG(SIGQUIT
, JobPassSig_term
)
2319 * There are additional signals that need to be caught and passed if
2320 * either the export system wants to be told directly of signals or if
2321 * we're giving each job its own process group (since then it won't get
2322 * signals from the terminal driver as we own the terminal)
2324 ADDSIG(SIGTSTP
, JobPassSig_suspend
)
2325 ADDSIG(SIGTTOU
, JobPassSig_suspend
)
2326 ADDSIG(SIGTTIN
, JobPassSig_suspend
)
2327 ADDSIG(SIGWINCH
, JobCondPassSig
)
2328 ADDSIG(SIGCONT
, JobContinueSig
)
2331 (void)Job_RunTarget(".BEGIN", NULL
);
2332 postCommands
= Targ_FindNode(".END", TARG_CREATE
);
2335 static void JobSigReset(void)
2338 if (sigismember(&caught_signals, s)) { \
2339 (void)bmake_signal(s, SIG_DFL); \
2352 (void)bmake_signal(SIGCHLD
, SIG_DFL
);
2356 *-----------------------------------------------------------------------
2358 * Find a shell in 'shells' given its name.
2361 * A pointer to the Shell structure.
2366 *-----------------------------------------------------------------------
2369 JobMatchShell(const char *name
)
2373 for (sh
= shells
; sh
->name
!= NULL
; sh
++) {
2374 if (strcmp(name
, sh
->name
) == 0)
2381 *-----------------------------------------------------------------------
2383 * Parse a shell specification and set up commandShell, shellPath
2384 * and shellName appropriately.
2387 * line The shell spec
2390 * FAILURE if the specification was incorrect.
2393 * commandShell points to a Shell structure (either predefined or
2394 * created from the shell spec), shellPath is the full path of the
2395 * shell described by commandShell, while shellName is just the
2396 * final component of shellPath.
2399 * A shell specification consists of a .SHELL target, with dependency
2400 * operator, followed by a series of blank-separated words. Double
2401 * quotes can be used to use blanks in words. A backslash escapes
2402 * anything (most notably a double-quote and a space) and
2403 * provides the functionality it does in C. Each word consists of
2404 * keyword and value separated by an equal sign. There should be no
2405 * unnecessary spaces in the word. The keywords are as follows:
2406 * name Name of shell.
2407 * path Location of shell.
2408 * quiet Command to turn off echoing.
2409 * echo Command to turn echoing on
2410 * filter Result of turning off echoing that shouldn't be
2412 * echoFlag Flag to turn echoing on at the start
2413 * errFlag Flag to turn error checking on at the start
2414 * hasErrCtl True if shell has error checking control
2415 * newline String literal to represent a newline char
2416 * check Command to turn on error checking if hasErrCtl
2417 * is TRUE or template of command to echo a command
2418 * for which error checking is off if hasErrCtl is
2420 * ignore Command to turn off error checking if hasErrCtl
2421 * is TRUE or template of command to execute a
2422 * command so as to ignore any errors it returns if
2423 * hasErrCtl is FALSE.
2425 *-----------------------------------------------------------------------
2428 Job_ParseShell(char *line
)
2435 Boolean fullSpec
= FALSE
;
2438 while (isspace((unsigned char)*line
)) {
2442 free(UNCONST(shellArgv
));
2444 memset(&newShell
, 0, sizeof(newShell
));
2447 * Parse the specification by keyword
2449 words
= brk_string(line
, &argc
, TRUE
, &path
);
2450 if (words
== NULL
) {
2451 Error("Unterminated quoted string [%s]", line
);
2456 for (path
= NULL
, argv
= words
; argc
!= 0; argc
--, argv
++) {
2457 if (strncmp(*argv
, "path=", 5) == 0) {
2459 } else if (strncmp(*argv
, "name=", 5) == 0) {
2460 newShell
.name
= &argv
[0][5];
2462 if (strncmp(*argv
, "quiet=", 6) == 0) {
2463 newShell
.echoOff
= &argv
[0][6];
2464 } else if (strncmp(*argv
, "echo=", 5) == 0) {
2465 newShell
.echoOn
= &argv
[0][5];
2466 } else if (strncmp(*argv
, "filter=", 7) == 0) {
2467 newShell
.noPrint
= &argv
[0][7];
2468 newShell
.noPLen
= strlen(newShell
.noPrint
);
2469 } else if (strncmp(*argv
, "echoFlag=", 9) == 0) {
2470 newShell
.echo
= &argv
[0][9];
2471 } else if (strncmp(*argv
, "errFlag=", 8) == 0) {
2472 newShell
.exit
= &argv
[0][8];
2473 } else if (strncmp(*argv
, "hasErrCtl=", 10) == 0) {
2474 char c
= argv
[0][10];
2475 newShell
.hasErrCtl
= !((c
!= 'Y') && (c
!= 'y') &&
2476 (c
!= 'T') && (c
!= 't'));
2477 } else if (strncmp(*argv
, "newline=", 8) == 0) {
2478 newShell
.newline
= &argv
[0][8];
2479 } else if (strncmp(*argv
, "check=", 6) == 0) {
2480 newShell
.errCheck
= &argv
[0][6];
2481 } else if (strncmp(*argv
, "ignore=", 7) == 0) {
2482 newShell
.ignErr
= &argv
[0][7];
2483 } else if (strncmp(*argv
, "errout=", 7) == 0) {
2484 newShell
.errOut
= &argv
[0][7];
2485 } else if (strncmp(*argv
, "comment=", 8) == 0) {
2486 newShell
.commentChar
= argv
[0][8];
2488 Parse_Error(PARSE_FATAL
, "Unknown keyword \"%s\"",
2499 * If no path was given, the user wants one of the pre-defined shells,
2500 * yes? So we find the one s/he wants with the help of JobMatchShell
2501 * and set things up the right way. shellPath will be set up by
2504 if (newShell
.name
== NULL
) {
2505 Parse_Error(PARSE_FATAL
, "Neither path nor name specified");
2509 if ((sh
= JobMatchShell(newShell
.name
)) == NULL
) {
2510 Parse_Error(PARSE_WARNING
, "%s: No matching shell",
2516 shellName
= newShell
.name
;
2518 /* Shell_Init has already been called! Do it again. */
2519 free(UNCONST(shellPath
));
2526 * The user provided a path. If s/he gave nothing else (fullSpec is
2527 * FALSE), try and find a matching shell in the ones we know of.
2528 * Else we just take the specification at its word and copy it
2529 * to a new location. In either case, we need to record the
2530 * path the user gave for the shell.
2533 path
= strrchr(path
, '/');
2535 path
= UNCONST(shellPath
);
2539 if (newShell
.name
!= NULL
) {
2540 shellName
= newShell
.name
;
2545 if ((sh
= JobMatchShell(shellName
)) == NULL
) {
2546 Parse_Error(PARSE_WARNING
, "%s: No matching shell",
2553 commandShell
= bmake_malloc(sizeof(Shell
));
2554 *commandShell
= newShell
;
2556 /* this will take care of shellErrFlag */
2560 if (commandShell
->echoOn
&& commandShell
->echoOff
) {
2561 commandShell
->hasEchoCtl
= TRUE
;
2564 if (!commandShell
->hasErrCtl
) {
2565 if (commandShell
->errCheck
== NULL
) {
2566 commandShell
->errCheck
= "";
2568 if (commandShell
->ignErr
== NULL
) {
2569 commandShell
->ignErr
= "%s\n";
2574 * Do not free up the words themselves, since they might be in use by the
2575 * shell specification.
2582 *-----------------------------------------------------------------------
2584 * Handle the receipt of an interrupt.
2587 * runINTERRUPT Non-zero if commands for the .INTERRUPT target
2588 * should be executed
2589 * signo signal received
2595 * All children are killed. Another job will be started if the
2596 * .INTERRUPT target was given.
2597 *-----------------------------------------------------------------------
2600 JobInterrupt(int runINTERRUPT
, int signo
)
2602 Job
*job
; /* job descriptor in that element */
2603 GNode
*interrupt
; /* the node describing the .INTERRUPT target */
2607 aborting
= ABORT_INTERRUPT
;
2611 for (job
= job_table
; job
< job_table_end
; job
++) {
2612 if (job
->job_state
!= JOB_ST_RUNNING
)
2617 JobDeleteTarget(gn
);
2620 (void)fprintf(debug_file
,
2621 "JobInterrupt passing signal %d to child %d.\n",
2624 KILLPG(job
->pid
, signo
);
2628 JobSigUnlock(&mask
);
2630 if (runINTERRUPT
&& !touchFlag
) {
2631 interrupt
= Targ_FindNode(".INTERRUPT", TARG_NOCREATE
);
2632 if (interrupt
!= NULL
) {
2633 ignoreErrors
= FALSE
;
2637 Trace_Log(MAKEINTR
, 0);
2642 *-----------------------------------------------------------------------
2644 * Do final processing such as the running of the commands
2645 * attached to the .END target.
2648 * Number of errors reported.
2652 *-----------------------------------------------------------------------
2657 if (postCommands
!= NULL
&&
2658 (!Lst_IsEmpty(postCommands
->commands
) ||
2659 !Lst_IsEmpty(postCommands
->children
))) {
2661 Error("Errors reported so .END ignored");
2663 JobRun(postCommands
);
2670 *-----------------------------------------------------------------------
2672 * Cleanup any memory used by the jobs module
2679 *-----------------------------------------------------------------------
2690 *-----------------------------------------------------------------------
2692 * Waits for all running jobs to finish and returns. Sets 'aborting'
2693 * to ABORT_WAIT to prevent other jobs from starting.
2699 * Currently running jobs finish.
2701 *-----------------------------------------------------------------------
2706 aborting
= ABORT_WAIT
;
2707 while (jobTokensRunning
!= 0) {
2714 *-----------------------------------------------------------------------
2716 * Abort all currently running jobs without handling output or anything.
2717 * This function is to be called only in the event of a major
2718 * error. Most definitely NOT to be called from JobInterrupt.
2724 * All children are killed, not just the firstborn
2725 *-----------------------------------------------------------------------
2730 Job
*job
; /* the job descriptor in that element */
2733 aborting
= ABORT_ERROR
;
2735 if (jobTokensRunning
) {
2736 for (job
= job_table
; job
< job_table_end
; job
++) {
2737 if (job
->job_state
!= JOB_ST_RUNNING
)
2740 * kill the child process with increasingly drastic signals to make
2741 * darn sure it's dead.
2743 KILLPG(job
->pid
, SIGINT
);
2744 KILLPG(job
->pid
, SIGKILL
);
2749 * Catch as many children as want to report in at first, then give up
2751 while (waitpid((pid_t
) -1, &foo
, WNOHANG
) > 0)
2757 *-----------------------------------------------------------------------
2759 * Tries to restart stopped jobs if there are slots available.
2760 * Called in process context in response to a SIGCONT.
2768 *-----------------------------------------------------------------------
2771 JobRestartJobs(void)
2775 for (job
= job_table
; job
< job_table_end
; job
++) {
2776 if (job
->job_state
== JOB_ST_RUNNING
&&
2777 (make_suspended
|| job
->job_suspended
)) {
2779 (void)fprintf(debug_file
, "Restarting stopped job pid %d.\n",
2782 if (job
->job_suspended
) {
2783 (void)fprintf(stderr
, "*** [%s] Continued\n", job
->node
->name
);
2784 (void)fflush(stderr
);
2786 job
->job_suspended
= 0;
2787 if (KILLPG(job
->pid
, SIGCONT
) != 0 && DEBUG(JOB
)) {
2788 fprintf(debug_file
, "Failed to send SIGCONT to %d\n", job
->pid
);
2791 if (job
->job_state
== JOB_ST_FINISHED
)
2792 /* Job exit deferred after calling waitpid() in a signal handler */
2793 JobFinish(job
, job
->exit_status
);
2801 if (job
->inPollfd
!= NULL
)
2802 Punt("Watching watched job");
2804 fds
[nfds
].fd
= job
->inPipe
;
2805 fds
[nfds
].events
= POLLIN
;
2807 job
->inPollfd
= &fds
[nfds
];
2815 if (job
->inPollfd
== NULL
)
2816 Punt("Unwatching unwatched job");
2817 i
= job
->inPollfd
- fds
;
2820 * Move last job in table into hole made by dead job.
2824 jobfds
[i
] = jobfds
[nfds
];
2825 jobfds
[i
]->inPollfd
= &fds
[i
];
2827 job
->inPollfd
= NULL
;
2833 if (job
->inPollfd
== NULL
)
2834 Punt("Polling unwatched job");
2835 return (job
->inPollfd
->revents
& POLLIN
) != 0;
2839 *-----------------------------------------------------------------------
2841 * Put a token into the job pipe so that some make process can start
2845 * Allows more build jobs to be spawned somewhere.
2847 *-----------------------------------------------------------------------
2853 char tok
= JOB_TOKENS
[aborting
], tok1
;
2855 /* If we are depositing an error token flush everything else */
2856 while (tok
!= '+' && read(tokenWaitJob
.inPipe
, &tok1
, 1) == 1)
2860 fprintf(debug_file
, "(%d) aborting %d, deposit token %c\n",
2861 getpid(), aborting
, JOB_TOKENS
[aborting
]);
2862 while (write(tokenWaitJob
.outPipe
, &tok
, 1) == -1 && errno
== EAGAIN
)
2867 *-----------------------------------------------------------------------
2868 * Job_ServerStartTokenAdd --
2869 * Prep the job token pipe in the root make process.
2871 *-----------------------------------------------------------------------
2875 Job_ServerStart(int max_tokens
, int jp_0
, int jp_1
)
2880 if (jp_0
>= 0 && jp_1
>= 0) {
2881 /* Pipe passed in from parent */
2882 tokenWaitJob
.inPipe
= jp_0
;
2883 tokenWaitJob
.outPipe
= jp_1
;
2884 (void)fcntl(jp_0
, F_SETFD
, FD_CLOEXEC
);
2885 (void)fcntl(jp_1
, F_SETFD
, FD_CLOEXEC
);
2889 JobCreatePipe(&tokenWaitJob
, 15);
2891 snprintf(jobarg
, sizeof(jobarg
), "%d,%d",
2892 tokenWaitJob
.inPipe
, tokenWaitJob
.outPipe
);
2894 Var_Append(MAKEFLAGS
, "-J", VAR_GLOBAL
);
2895 Var_Append(MAKEFLAGS
, jobarg
, VAR_GLOBAL
);
2898 * Preload the job pipe with one token per job, save the one
2899 * "extra" token for the primary job.
2901 * XXX should clip maxJobs against PIPE_BUF -- if max_tokens is
2902 * larger than the write buffer size of the pipe, we will
2905 for (i
= 1; i
< max_tokens
; i
++)
2910 *-----------------------------------------------------------------------
2911 * Job_TokenReturn --
2912 * Return a withdrawn token to the pool.
2914 *-----------------------------------------------------------------------
2918 Job_TokenReturn(void)
2921 if (jobTokensRunning
< 0)
2922 Punt("token botch");
2923 if (jobTokensRunning
|| JOB_TOKENS
[aborting
] != '+')
2928 *-----------------------------------------------------------------------
2929 * Job_TokenWithdraw --
2930 * Attempt to withdraw a token from the pool.
2933 * Returns TRUE if a token was withdrawn, and FALSE if the pool
2934 * is currently empty.
2937 * If pool is empty, set wantToken so that we wake up
2938 * when a token is released.
2940 *-----------------------------------------------------------------------
2945 Job_TokenWithdraw(void)
2952 fprintf(debug_file
, "Job_TokenWithdraw(%d): aborting %d, running %d\n",
2953 getpid(), aborting
, jobTokensRunning
);
2955 if (aborting
|| (jobTokensRunning
>= maxJobs
))
2958 count
= read(tokenWaitJob
.inPipe
, &tok
, 1);
2960 Fatal("eof on job pipe!");
2961 if (count
< 0 && jobTokensRunning
!= 0) {
2962 if (errno
!= EAGAIN
) {
2963 Fatal("job pipe read: %s", strerror(errno
));
2966 fprintf(debug_file
, "(%d) blocked for token\n", getpid());
2971 if (count
== 1 && tok
!= '+') {
2972 /* make being abvorted - remove any other job tokens */
2974 fprintf(debug_file
, "(%d) aborted by token %c\n", getpid(), tok
);
2975 while (read(tokenWaitJob
.inPipe
, &tok1
, 1) == 1)
2977 /* And put the stopper back */
2978 while (write(tokenWaitJob
.outPipe
, &tok
, 1) == -1 && errno
== EAGAIN
)
2980 Fatal("A failure has been detected in another branch of the parallel make");
2983 if (count
== 1 && jobTokensRunning
== 0)
2984 /* We didn't want the token really */
2985 while (write(tokenWaitJob
.outPipe
, &tok
, 1) == -1 && errno
== EAGAIN
)
2990 fprintf(debug_file
, "(%d) withdrew token\n", getpid());
2995 *-----------------------------------------------------------------------
2997 * Run the named target if found. If a filename is specified, then
2998 * set that to the sources.
3004 * exits if the target fails.
3006 *-----------------------------------------------------------------------
3009 Job_RunTarget(const char *target
, const char *fname
) {
3010 GNode
*gn
= Targ_FindNode(target
, TARG_NOCREATE
);
3016 Var_Set(ALLSRC
, fname
, gn
, 0);
3019 if (gn
->made
== ERROR
) {
3020 PrintOnError(gn
, "\n\nStop.");
3028 emul_poll(struct pollfd
*fd
, int nfd
, int timeout
)
3031 int i
, maxfd
, nselect
, npoll
;
3032 struct timeval tv
, *tvp
;
3039 for (i
= 0; i
< nfd
; i
++) {
3042 if (fd
[i
].events
& POLLIN
)
3043 FD_SET(fd
[i
].fd
, &rfds
);
3045 if (fd
[i
].events
& POLLOUT
)
3046 FD_SET(fd
[i
].fd
, &wfds
);
3048 if (fd
[i
].fd
> maxfd
)
3052 if (maxfd
>= FD_SETSIZE
) {
3053 Punt("Ran out of fd_set slots; "
3054 "recompile with a larger FD_SETSIZE.");
3060 usecs
= timeout
* 1000;
3061 tv
.tv_sec
= usecs
/ 1000000;
3062 tv
.tv_usec
= usecs
% 1000000;
3066 nselect
= select(maxfd
+ 1, &rfds
, &wfds
, 0, tvp
);
3072 for (i
= 0; i
< nfd
; i
++) {
3073 if (FD_ISSET(fd
[i
].fd
, &rfds
))
3074 fd
[i
].revents
|= POLLIN
;
3076 if (FD_ISSET(fd
[i
].fd
, &wfds
))
3077 fd
[i
].revents
|= POLLOUT
;
3085 #endif /* USE_SELECT */