1 /* $NetBSD: job.c,v 1.187 2016/05/12 20:28:34 sjg 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 1.187 2016/05/12 20:28:34 sjg Exp $";
75 #include <sys/cdefs.h>
78 static char sccsid
[] = "@(#)job.c 8.2 (Berkeley) 3/19/94";
80 __RCSID("$NetBSD: job.c,v 1.187 2016/05/12 20:28:34 sjg 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 const char *malloc_options
="A";
379 job_table_dump(const char *where
)
383 fprintf(debug_file
, "job table @ %s\n", where
);
384 for (job
= job_table
; job
< job_table_end
; job
++) {
385 fprintf(debug_file
, "job %d, status %d, flags %d, pid %d\n",
386 (int)(job
- job_table
), job
->job_state
, job
->flags
, job
->pid
);
391 * JobSigLock/JobSigUnlock
393 * Signal lock routines to get exclusive access. Currently used to
394 * protect `jobs' and `stoppedJobs' list manipulations.
396 static void JobSigLock(sigset_t
*omaskp
)
398 if (sigprocmask(SIG_BLOCK
, &caught_signals
, omaskp
) != 0) {
399 Punt("JobSigLock: sigprocmask: %s", strerror(errno
));
404 static void JobSigUnlock(sigset_t
*omaskp
)
406 (void)sigprocmask(SIG_SETMASK
, omaskp
, NULL
);
410 JobCreatePipe(Job
*job
, int minfd
)
414 if (pipe(job
->jobPipe
) == -1)
415 Punt("Cannot create pipe: %s", strerror(errno
));
417 for (i
= 0; i
< 2; i
++) {
418 /* Avoid using low numbered fds */
419 fd
= fcntl(job
->jobPipe
[i
], F_DUPFD
, minfd
);
421 close(job
->jobPipe
[i
]);
422 job
->jobPipe
[i
] = fd
;
426 /* Set close-on-exec flag for both */
427 (void)fcntl(job
->jobPipe
[0], F_SETFD
, FD_CLOEXEC
);
428 (void)fcntl(job
->jobPipe
[1], F_SETFD
, FD_CLOEXEC
);
431 * We mark the input side of the pipe non-blocking; we poll(2) the
432 * pipe when we're waiting for a job token, but we might lose the
433 * race for the token when a new one becomes available, so the read
434 * from the pipe should not block.
436 fcntl(job
->jobPipe
[0], F_SETFL
,
437 fcntl(job
->jobPipe
[0], F_GETFL
, 0) | O_NONBLOCK
);
441 *-----------------------------------------------------------------------
443 * Pass a signal to a job
446 * signop Signal to send it
449 * None, except the job may bite it.
451 *-----------------------------------------------------------------------
454 JobCondPassSig(int signo
)
459 (void)fprintf(debug_file
, "JobCondPassSig(%d) called.\n", signo
);
462 for (job
= job_table
; job
< job_table_end
; job
++) {
463 if (job
->job_state
!= JOB_ST_RUNNING
)
466 (void)fprintf(debug_file
,
467 "JobCondPassSig passing signal %d to child %d.\n",
470 KILLPG(job
->pid
, signo
);
475 *-----------------------------------------------------------------------
480 * signo The signal number we've received
486 * Sends a token on the child exit pipe to wake us up from
489 *-----------------------------------------------------------------------
492 JobChildSig(int signo MAKE_ATTR_UNUSED
)
494 while (write(childExitJob
.outPipe
, CHILD_EXIT
, 1) == -1 && errno
== EAGAIN
)
500 *-----------------------------------------------------------------------
502 * Resume all stopped jobs.
505 * signo The signal number we've received
511 * Jobs start running again.
513 *-----------------------------------------------------------------------
516 JobContinueSig(int signo MAKE_ATTR_UNUSED
)
519 * Defer sending to SIGCONT to our stopped children until we return
520 * from the signal handler.
522 while (write(childExitJob
.outPipe
, DO_JOB_RESUME
, 1) == -1 &&
528 *-----------------------------------------------------------------------
530 * Pass a signal on to all jobs, then resend to ourselves.
533 * signo The signal number we've received
539 * We die by the same signal.
541 *-----------------------------------------------------------------------
543 MAKE_ATTR_DEAD
static void
544 JobPassSig_int(int signo
)
546 /* Run .INTERRUPT target then exit */
547 JobInterrupt(TRUE
, signo
);
550 MAKE_ATTR_DEAD
static void
551 JobPassSig_term(int signo
)
553 /* Dont run .INTERRUPT target then exit */
554 JobInterrupt(FALSE
, signo
);
558 JobPassSig_suspend(int signo
)
560 sigset_t nmask
, omask
;
561 struct sigaction act
;
563 /* Suppress job started/continued messages */
566 /* Pass the signal onto every job */
567 JobCondPassSig(signo
);
570 * Send ourselves the signal now we've given the message to everyone else.
571 * Note we block everything else possible while we're getting the signal.
572 * This ensures that all our jobs get continued when we wake up before
573 * we take any other signal.
576 sigdelset(&nmask
, signo
);
577 (void)sigprocmask(SIG_SETMASK
, &nmask
, &omask
);
579 act
.sa_handler
= SIG_DFL
;
580 sigemptyset(&act
.sa_mask
);
582 (void)sigaction(signo
, &act
, NULL
);
585 (void)fprintf(debug_file
,
586 "JobPassSig passing signal %d to self.\n", signo
);
589 (void)kill(getpid(), signo
);
592 * We've been continued.
594 * A whole host of signals continue to happen!
595 * SIGCHLD for any processes that actually suspended themselves.
596 * SIGCHLD for any processes that exited while we were alseep.
597 * The SIGCONT that actually caused us to wakeup.
599 * Since we defer passing the SIGCONT on to our children until
600 * the main processing loop, we can be sure that all the SIGCHLD
601 * events will have happened by then - and that the waitpid() will
602 * collect the child 'suspended' events.
603 * For correct sequencing we just need to ensure we process the
604 * waitpid() before passign on the SIGCONT.
606 * In any case nothing else is needed here.
609 /* Restore handler and signal mask */
610 act
.sa_handler
= JobPassSig_suspend
;
611 (void)sigaction(signo
, &act
, NULL
);
612 (void)sigprocmask(SIG_SETMASK
, &omask
, NULL
);
616 *-----------------------------------------------------------------------
618 * Compare the pid of the job with the given pid and return 0 if they
619 * are equal. This function is called from Job_CatchChildren
620 * to find the job descriptor of the finished job.
624 * pid process id desired
627 * Job with matching pid
631 *-----------------------------------------------------------------------
634 JobFindPid(int pid
, int status
, Boolean isJobs
)
638 for (job
= job_table
; job
< job_table_end
; job
++) {
639 if ((job
->job_state
== status
) && job
->pid
== pid
)
642 if (DEBUG(JOB
) && isJobs
)
643 job_table_dump("no pid");
648 *-----------------------------------------------------------------------
650 * Put out another command for the given job. If the command starts
651 * with an @ or a - we process it specially. In the former case,
652 * so long as the -s and -n flags weren't given to make, we stick
653 * a shell-specific echoOff command in the script. In the latter,
654 * we ignore errors for the entire job, unless the shell has error
656 * If the command is just "..." we take all future commands for this
657 * job to be commands to be executed once the entire graph has been
658 * made and return non-zero to signal that the end of the commands
659 * was reached. These commands are later attached to the postCommands
660 * node and executed by Job_End when all things are done.
661 * This function is called from JobStart via Lst_ForEach.
664 * cmdp command string to print
665 * jobp job for which to print it
668 * Always 0, unless the command was "..."
671 * If the command begins with a '-' and the shell has no error control,
672 * the JOB_IGNERR flag is set in the job descriptor.
673 * If the command is "..." and we're not ignoring such things,
674 * tailCmds is set to the successor node of the cmd.
675 * numCommands is incremented if the command is actually printed.
676 *-----------------------------------------------------------------------
679 JobPrintCommand(void *cmdp
, void *jobp
)
681 Boolean noSpecials
; /* true if we shouldn't worry about
682 * inserting special commands into
683 * the input stream. */
684 Boolean shutUp
= FALSE
; /* true if we put a no echo command
685 * into the command file */
686 Boolean errOff
= FALSE
; /* true if we turned error checking
687 * off before printing the command
688 * and need to turn it back on */
689 const char *cmdTemplate
; /* Template to use when printing the
691 char *cmdStart
; /* Start of expanded command */
692 char *escCmd
= NULL
; /* Command with quotes/backticks escaped */
693 char *cmd
= (char *)cmdp
;
694 Job
*job
= (Job
*)jobp
;
697 noSpecials
= NoExecute(job
->node
);
699 if (strcmp(cmd
, "...") == 0) {
700 job
->node
->type
|= OP_SAVE_CMDS
;
701 if ((job
->flags
& JOB_IGNDOTS
) == 0) {
702 job
->tailCmds
= Lst_Succ(Lst_Member(job
->node
->commands
,
709 #define DBPRINTF(fmt, arg) if (DEBUG(JOB)) { \
710 (void)fprintf(debug_file, fmt, arg); \
712 (void)fprintf(job->cmdFILE, fmt, arg); \
713 (void)fflush(job->cmdFILE);
717 cmdStart
= cmd
= Var_Subst(NULL
, cmd
, job
->node
, VARF_WANTRES
);
719 cmdTemplate
= "%s\n";
722 * Check for leading @' and -'s to control echoing and error checking.
724 while (*cmd
== '@' || *cmd
== '-' || (*cmd
== '+')) {
727 shutUp
= DEBUG(LOUD
) ? FALSE
: TRUE
;
735 * We're not actually executing anything...
736 * but this one needs to be - use compat mode just for it.
738 CompatRunCommand(cmdp
, job
->node
);
746 while (isspace((unsigned char) *cmd
))
750 * If the shell doesn't have error control the alternate echo'ing will
751 * be done (to avoid showing additional error checking code)
752 * and this will need the characters '$ ` \ "' escaped
755 if (!commandShell
->hasErrCtl
) {
756 /* Worst that could happen is every char needs escaping. */
757 escCmd
= bmake_malloc((strlen(cmd
) * 2) + 1);
758 for (i
= 0, j
= 0; cmd
[i
] != '\0'; i
++, j
++) {
759 if (cmd
[i
] == '$' || cmd
[i
] == '`' || cmd
[i
] == '\\' ||
768 if (!(job
->flags
& JOB_SILENT
) && !noSpecials
&&
769 commandShell
->hasEchoCtl
) {
770 DBPRINTF("%s\n", commandShell
->echoOff
);
772 if (commandShell
->hasErrCtl
)
779 if (commandShell
->hasErrCtl
) {
781 * we don't want the error-control commands showing
782 * up either, so we turn off echoing while executing
783 * them. We could put another field in the shell
784 * structure to tell JobDoOutput to look for this
785 * string too, but why make it any more complex than
788 if (!(job
->flags
& JOB_SILENT
) && !shutUp
&&
789 commandShell
->hasEchoCtl
) {
790 DBPRINTF("%s\n", commandShell
->echoOff
);
791 DBPRINTF("%s\n", commandShell
->ignErr
);
792 DBPRINTF("%s\n", commandShell
->echoOn
);
794 DBPRINTF("%s\n", commandShell
->ignErr
);
796 } else if (commandShell
->ignErr
&&
797 (*commandShell
->ignErr
!= '\0'))
800 * The shell has no error control, so we need to be
801 * weird to get it to ignore any errors from the command.
802 * If echoing is turned on, we turn it off and use the
803 * errCheck template to echo the command. Leave echoing
804 * off so the user doesn't see the weirdness we go through
805 * to ignore errors. Set cmdTemplate to use the weirdness
806 * instead of the simple "%s\n" template.
808 job
->flags
|= JOB_IGNERR
;
809 if (!(job
->flags
& JOB_SILENT
) && !shutUp
) {
810 if (commandShell
->hasEchoCtl
) {
811 DBPRINTF("%s\n", commandShell
->echoOff
);
813 DBPRINTF(commandShell
->errCheck
, escCmd
);
817 DBPRINTF(commandShell
->errCheck
, escCmd
);
820 cmdTemplate
= commandShell
->ignErr
;
822 * The error ignoration (hee hee) is already taken care
823 * of by the ignErr template, so pretend error checking
836 * If errors are being checked and the shell doesn't have error control
837 * but does supply an errOut template, then setup commands to run
841 if (!commandShell
->hasErrCtl
&& commandShell
->errOut
&&
842 (*commandShell
->errOut
!= '\0')) {
843 if (!(job
->flags
& JOB_SILENT
) && !shutUp
) {
844 if (commandShell
->hasEchoCtl
) {
845 DBPRINTF("%s\n", commandShell
->echoOff
);
847 DBPRINTF(commandShell
->errCheck
, escCmd
);
850 /* If it's a comment line or blank, treat as an ignored error */
851 if ((escCmd
[0] == commandShell
->commentChar
) ||
853 cmdTemplate
= commandShell
->ignErr
;
855 cmdTemplate
= commandShell
->errOut
;
860 if (DEBUG(SHELL
) && strcmp(shellName
, "sh") == 0 &&
861 (job
->flags
& JOB_TRACED
) == 0) {
862 DBPRINTF("set -%s\n", "x");
863 job
->flags
|= JOB_TRACED
;
866 DBPRINTF(cmdTemplate
, cmd
);
871 * If echoing is already off, there's no point in issuing the
872 * echoOff command. Otherwise we issue it and pretend it was on
873 * for the whole command...
875 if (!shutUp
&& !(job
->flags
& JOB_SILENT
) && commandShell
->hasEchoCtl
){
876 DBPRINTF("%s\n", commandShell
->echoOff
);
879 DBPRINTF("%s\n", commandShell
->errCheck
);
881 if (shutUp
&& commandShell
->hasEchoCtl
) {
882 DBPRINTF("%s\n", commandShell
->echoOn
);
888 *-----------------------------------------------------------------------
890 * Save a command to be executed when everything else is done.
891 * Callback function for JobFinish...
897 * The command is tacked onto the end of postCommands's commands list.
899 *-----------------------------------------------------------------------
902 JobSaveCommand(void *cmd
, void *gn
)
904 cmd
= Var_Subst(NULL
, (char *)cmd
, (GNode
*)gn
, VARF_WANTRES
);
905 (void)Lst_AtEnd(postCommands
->commands
, cmd
);
911 *-----------------------------------------------------------------------
913 * Called to close both input and output pipes when a job is finished.
919 * The file descriptors associated with the job are closed.
921 *-----------------------------------------------------------------------
927 (void)close(job
->outPipe
);
930 JobDoOutput(job
, TRUE
);
931 (void)close(job
->inPipe
);
936 *-----------------------------------------------------------------------
938 * Do final processing for the given job including updating
939 * parents and starting new jobs as available/necessary. Note
940 * that we pay no attention to the JOB_IGNERR flag here.
941 * This is because when we're called because of a noexecute flag
942 * or something, jstat.w_status is 0 and when called from
943 * Job_CatchChildren, the status is zeroed if it s/b ignored.
947 * status sub-why job went away
953 * Final commands for the job are placed on postCommands.
955 * If we got an error and are aborting (aborting == ABORT_ERROR) and
956 * the job list is now empty, we are done for the day.
957 * If we recognized an error (errors !=0), we set the aborting flag
958 * to ABORT_ERROR so no more jobs will be started.
959 *-----------------------------------------------------------------------
963 JobFinish (Job
*job
, WAIT_T status
)
965 Boolean done
, return_job_token
;
968 fprintf(debug_file
, "Jobfinish: %d [%s], status %d\n",
969 job
->pid
, job
->node
->name
, status
);
972 if ((WIFEXITED(status
) &&
973 (((WEXITSTATUS(status
) != 0) && !(job
->flags
& JOB_IGNERR
)))) ||
977 * If it exited non-zero and either we're doing things our
978 * way or we're not ignoring errors, the job is finished.
979 * Similarly, if the shell died because of a signal
980 * the job is also finished. In these
981 * cases, finish out the job's output before printing the exit
985 if (job
->cmdFILE
!= NULL
&& job
->cmdFILE
!= stdout
) {
986 (void)fclose(job
->cmdFILE
);
990 } else if (WIFEXITED(status
)) {
992 * Deal with ignored errors in -B mode. We need to print a message
993 * telling of the ignored error as well as setting status.w_status
994 * to 0 so the next command gets run. To do this, we set done to be
995 * TRUE if in -B mode and the job exited non-zero.
997 done
= WEXITSTATUS(status
) != 0;
999 * Old comment said: "Note we don't
1000 * want to close down any of the streams until we know we're at the
1002 * But we do. Otherwise when are we going to print the rest of the
1008 * No need to close things down or anything.
1014 if (WIFEXITED(status
)) {
1016 (void)fprintf(debug_file
, "Process %d [%s] exited.\n",
1017 job
->pid
, job
->node
->name
);
1019 if (WEXITSTATUS(status
) != 0) {
1020 if (job
->node
!= lastNode
) {
1021 MESSAGE(stdout
, job
->node
);
1022 lastNode
= job
->node
;
1026 meta_job_error(job
, job
->node
, job
->flags
, WEXITSTATUS(status
));
1029 (void)printf("*** [%s] Error code %d%s\n",
1031 WEXITSTATUS(status
),
1032 (job
->flags
& JOB_IGNERR
) ? " (ignored)" : "");
1033 if (job
->flags
& JOB_IGNERR
) {
1034 WAIT_STATUS(status
) = 0;
1036 PrintOnError(job
->node
, NULL
);
1038 } else if (DEBUG(JOB
)) {
1039 if (job
->node
!= lastNode
) {
1040 MESSAGE(stdout
, job
->node
);
1041 lastNode
= job
->node
;
1043 (void)printf("*** [%s] Completed successfully\n",
1047 if (job
->node
!= lastNode
) {
1048 MESSAGE(stdout
, job
->node
);
1049 lastNode
= job
->node
;
1051 (void)printf("*** [%s] Signal %d\n",
1052 job
->node
->name
, WTERMSIG(status
));
1054 (void)fflush(stdout
);
1061 if ((x
= meta_job_finish(job
)) != 0 && status
== 0) {
1067 return_job_token
= FALSE
;
1069 Trace_Log(JOBEND
, job
);
1070 if (!(job
->flags
& JOB_SPECIAL
)) {
1071 if ((WAIT_STATUS(status
) != 0) ||
1072 (aborting
== ABORT_ERROR
) ||
1073 (aborting
== ABORT_INTERRUPT
))
1074 return_job_token
= TRUE
;
1077 if ((aborting
!= ABORT_ERROR
) && (aborting
!= ABORT_INTERRUPT
) &&
1078 (WAIT_STATUS(status
) == 0)) {
1080 * As long as we aren't aborting and the job didn't return a non-zero
1081 * status that we shouldn't ignore, we call Make_Update to update
1082 * the parents. In addition, any saved commands for the node are placed
1083 * on the .END target.
1085 if (job
->tailCmds
!= NULL
) {
1086 Lst_ForEachFrom(job
->node
->commands
, job
->tailCmds
,
1090 job
->node
->made
= MADE
;
1091 if (!(job
->flags
& JOB_SPECIAL
))
1092 return_job_token
= TRUE
;
1093 Make_Update(job
->node
);
1094 job
->job_state
= JOB_ST_FREE
;
1095 } else if (WAIT_STATUS(status
)) {
1097 job
->job_state
= JOB_ST_FREE
;
1101 * Set aborting if any error.
1103 if (errors
&& !keepgoing
&& (aborting
!= ABORT_INTERRUPT
)) {
1105 * If we found any errors in this batch of children and the -k flag
1106 * wasn't given, we set the aborting flag so no more jobs get
1109 aborting
= ABORT_ERROR
;
1112 if (return_job_token
)
1115 if (aborting
== ABORT_ERROR
&& jobTokensRunning
== 0) {
1117 * If we are aborting and the job table is now empty, we finish.
1124 *-----------------------------------------------------------------------
1126 * Touch the given target. Called by JobStart when the -t flag was
1130 * gn the node of the file to touch
1131 * silent TRUE if should not print message
1137 * The data modification of the file is changed. In addition, if the
1138 * file did not exist, it is created.
1139 *-----------------------------------------------------------------------
1142 Job_Touch(GNode
*gn
, Boolean silent
)
1144 int streamID
; /* ID of stream opened to do the touch */
1145 struct utimbuf times
; /* Times for utime() call */
1147 if (gn
->type
& (OP_JOIN
|OP_USE
|OP_USEBEFORE
|OP_EXEC
|OP_OPTIONAL
|
1148 OP_SPECIAL
|OP_PHONY
)) {
1150 * .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual" targets
1151 * and, as such, shouldn't really be created.
1156 if (!silent
|| NoExecute(gn
)) {
1157 (void)fprintf(stdout
, "touch %s\n", gn
->name
);
1158 (void)fflush(stdout
);
1161 if (NoExecute(gn
)) {
1165 if (gn
->type
& OP_ARCHV
) {
1167 } else if (gn
->type
& OP_LIB
) {
1170 char *file
= gn
->path
? gn
->path
: gn
->name
;
1172 times
.actime
= times
.modtime
= now
;
1173 if (utime(file
, ×
) < 0){
1174 streamID
= open(file
, O_RDWR
| O_CREAT
, 0666);
1176 if (streamID
>= 0) {
1180 * Read and write a byte to the file to change the
1181 * modification time, then close the file.
1183 if (read(streamID
, &c
, 1) == 1) {
1184 (void)lseek(streamID
, (off_t
)0, SEEK_SET
);
1185 while (write(streamID
, &c
, 1) == -1 && errno
== EAGAIN
)
1189 (void)close(streamID
);
1191 (void)fprintf(stdout
, "*** couldn't touch %s: %s",
1192 file
, strerror(errno
));
1193 (void)fflush(stdout
);
1200 *-----------------------------------------------------------------------
1201 * Job_CheckCommands --
1202 * Make sure the given node has all the commands it needs.
1205 * gn The target whose commands need verifying
1206 * abortProc Function to abort with message
1209 * TRUE if the commands list is/was ok.
1212 * The node will have commands from the .DEFAULT rule added to it
1214 *-----------------------------------------------------------------------
1217 Job_CheckCommands(GNode
*gn
, void (*abortProc
)(const char *, ...))
1219 if (OP_NOP(gn
->type
) && Lst_IsEmpty(gn
->commands
) &&
1220 ((gn
->type
& OP_LIB
) == 0 || Lst_IsEmpty(gn
->children
))) {
1222 * No commands. Look for .DEFAULT rule from which we might infer
1225 if ((DEFAULT
!= NULL
) && !Lst_IsEmpty(DEFAULT
->commands
) &&
1226 (gn
->type
& OP_SPECIAL
) == 0) {
1229 * Make only looks for a .DEFAULT if the node was never the
1230 * target of an operator, so that's what we do too. If
1231 * a .DEFAULT was given, we substitute its commands for gn's
1232 * commands and set the IMPSRC variable to be the target's name
1233 * The DEFAULT node acts like a transformation rule, in that
1234 * gn also inherits any attributes or sources attached to
1237 Make_HandleUse(DEFAULT
, gn
);
1238 Var_Set(IMPSRC
, Var_Value(TARGET
, gn
, &p1
), gn
, 0);
1240 } else if (Dir_MTime(gn
, 0) == 0 && (gn
->type
& OP_SPECIAL
) == 0) {
1242 * The node wasn't the target of an operator we have no .DEFAULT
1243 * rule to go on and the target doesn't already exist. There's
1244 * nothing more we can do for this branch. If the -k flag wasn't
1245 * given, we stop in our tracks, otherwise we just don't update
1246 * this node's parents so they never get examined.
1248 static const char msg
[] = ": don't know how to make";
1250 if (gn
->flags
& FROM_DEPEND
) {
1251 if (!Job_RunTarget(".STALE", gn
->fname
))
1252 fprintf(stdout
, "%s: %s, %d: ignoring stale %s for %s\n",
1253 progname
, gn
->fname
, gn
->lineno
, makeDependfile
,
1258 if (gn
->type
& OP_OPTIONAL
) {
1259 (void)fprintf(stdout
, "%s%s %s (ignored)\n", progname
,
1261 (void)fflush(stdout
);
1262 } else if (keepgoing
) {
1263 (void)fprintf(stdout
, "%s%s %s (continuing)\n", progname
,
1265 (void)fflush(stdout
);
1268 (*abortProc
)("%s%s %s. Stop", progname
, msg
, gn
->name
);
1277 *-----------------------------------------------------------------------
1279 * Execute the shell for the given job. Called from JobStart
1282 * job Job to execute
1288 * A shell is executed, outputs is altered and the Job structure added
1291 *-----------------------------------------------------------------------
1294 JobExec(Job
*job
, char **argv
)
1296 int cpid
; /* ID of new child */
1299 job
->flags
&= ~JOB_TRACED
;
1304 (void)fprintf(debug_file
, "Running %s %sly\n", job
->node
->name
, "local");
1305 (void)fprintf(debug_file
, "\tCommand: ");
1306 for (i
= 0; argv
[i
] != NULL
; i
++) {
1307 (void)fprintf(debug_file
, "%s ", argv
[i
]);
1309 (void)fprintf(debug_file
, "\n");
1313 * Some jobs produce no output and it's disconcerting to have
1314 * no feedback of their running (since they produce no output, the
1315 * banner with their name in it never appears). This is an attempt to
1316 * provide that feedback, even if nothing follows it.
1318 if ((lastNode
!= job
->node
) && !(job
->flags
& JOB_SILENT
)) {
1319 MESSAGE(stdout
, job
->node
);
1320 lastNode
= job
->node
;
1323 /* No interruptions until this job is on the `jobs' list */
1326 /* Pre-emptively mark job running, pid still zero though */
1327 job
->job_state
= JOB_ST_RUNNING
;
1331 Punt("Cannot vfork: %s", strerror(errno
));
1339 meta_job_child(job
);
1343 * Reset all signal handlers; this is necessary because we also
1344 * need to unblock signals before we exec(2).
1348 /* Now unblock signals */
1349 sigemptyset(&tmask
);
1350 JobSigUnlock(&tmask
);
1353 * Must duplicate the input stream down to the child's input and
1354 * reset it to the beginning (again). Since the stream was marked
1355 * close-on-exec, we must clear that bit in the new input.
1357 if (dup2(FILENO(job
->cmdFILE
), 0) == -1) {
1358 execError("dup2", "job->cmdFILE");
1361 (void)fcntl(0, F_SETFD
, 0);
1362 (void)lseek(0, (off_t
)0, SEEK_SET
);
1365 * Always pass job token pipe to submakes. In the previous version
1366 * only the OP_MAKE flag was checked, which simply doesn't catch all
1367 * situtions and can lead to a massive multiplication of jobs. This
1368 * may have been corrected with OR OP_SUBMAKE, but until this is
1369 * known for sure, keep the original modication in place
1371 * if (job->node->type & (OP_MAKE | OP_SUBMAKE))
1375 * Pass job token pipe to submakes.
1377 fcntl(tokenWaitJob
.inPipe
, F_SETFD
, 0);
1378 fcntl(tokenWaitJob
.outPipe
, F_SETFD
, 0);
1382 * Set up the child's output to be routed through the pipe
1383 * we've created for it.
1385 if (dup2(job
->outPipe
, 1) == -1) {
1386 execError("dup2", "job->outPipe");
1390 * The output channels are marked close on exec. This bit was
1391 * duplicated by the dup2(on some systems), so we have to clear
1392 * it before routing the shell's error output to the same place as
1393 * its standard output.
1395 (void)fcntl(1, F_SETFD
, 0);
1396 if (dup2(1, 2) == -1) {
1397 execError("dup2", "1, 2");
1402 * We want to switch the child into a different process family so
1403 * we can kill it and all its descendants in one fell swoop,
1404 * by killing its process family, but not commit suicide.
1406 #if defined(HAVE_SETPGID)
1407 (void)setpgid(0, getpid());
1409 #if defined(HAVE_SETSID)
1410 /* XXX: dsl - I'm sure this should be setpgrp()... */
1413 (void)setpgrp(0, getpid());
1419 (void)execv(shellPath
, argv
);
1420 execError("exec", shellPath
);
1424 /* Parent, continuing after the child exec */
1427 Trace_Log(JOBSTART
, job
);
1430 * Set the current position in the buffer to the beginning
1431 * and mark another stream to watch in the outputs mask
1437 if (job
->cmdFILE
!= NULL
&& job
->cmdFILE
!= stdout
) {
1438 (void)fclose(job
->cmdFILE
);
1439 job
->cmdFILE
= NULL
;
1443 * Now the job is actually running, add it to the table.
1446 fprintf(debug_file
, "JobExec(%s): pid %d added to jobs table\n",
1447 job
->node
->name
, job
->pid
);
1448 job_table_dump("job started");
1450 JobSigUnlock(&mask
);
1454 *-----------------------------------------------------------------------
1456 * Create the argv needed to execute the shell for a given job.
1463 *-----------------------------------------------------------------------
1466 JobMakeArgv(Job
*job
, char **argv
)
1469 static char args
[10]; /* For merged arguments */
1471 argv
[0] = UNCONST(shellName
);
1474 if ((commandShell
->exit
&& (*commandShell
->exit
!= '-')) ||
1475 (commandShell
->echo
&& (*commandShell
->echo
!= '-')))
1478 * At least one of the flags doesn't have a minus before it, so
1479 * merge them together. Have to do this because the *(&(@*#*&#$#
1480 * Bourne shell thinks its second argument is a file to source.
1481 * Grrrr. Note the ten-character limitation on the combined arguments.
1483 (void)snprintf(args
, sizeof(args
), "-%s%s",
1484 ((job
->flags
& JOB_IGNERR
) ? "" :
1485 (commandShell
->exit
? commandShell
->exit
: "")),
1486 ((job
->flags
& JOB_SILENT
) ? "" :
1487 (commandShell
->echo
? commandShell
->echo
: "")));
1494 if (!(job
->flags
& JOB_IGNERR
) && commandShell
->exit
) {
1495 argv
[argc
] = UNCONST(commandShell
->exit
);
1498 if (!(job
->flags
& JOB_SILENT
) && commandShell
->echo
) {
1499 argv
[argc
] = UNCONST(commandShell
->echo
);
1507 *-----------------------------------------------------------------------
1509 * Start a target-creation process going for the target described
1510 * by the graph node gn.
1513 * gn target to create
1514 * flags flags for the job to override normal ones.
1515 * e.g. JOB_SPECIAL or JOB_IGNDOTS
1516 * previous The previous Job structure for this node, if any.
1519 * JOB_ERROR if there was an error in the commands, JOB_FINISHED
1520 * if there isn't actually anything left to do for the job and
1521 * JOB_RUNNING if the job has been started.
1524 * A new Job node is created and added to the list of running
1525 * jobs. PMake is forked and a child shell created.
1527 * NB: I'm fairly sure that this code is never called with JOB_SPECIAL set
1528 * JOB_IGNDOTS is never set (dsl)
1529 * Also the return value is ignored by everyone.
1530 *-----------------------------------------------------------------------
1533 JobStart(GNode
*gn
, int flags
)
1535 Job
*job
; /* new job descriptor */
1536 char *argv
[10]; /* Argument vector to shell */
1537 Boolean cmdsOK
; /* true if the nodes commands were all right */
1538 Boolean noExec
; /* Set true if we decide not to run the job */
1539 int tfd
; /* File descriptor to the temp file */
1541 for (job
= job_table
; job
< job_table_end
; job
++) {
1542 if (job
->job_state
== JOB_ST_FREE
)
1545 if (job
>= job_table_end
)
1546 Punt("JobStart no job slots vacant");
1548 memset(job
, 0, sizeof *job
);
1549 job
->job_state
= JOB_ST_SETUP
;
1550 if (gn
->type
& OP_SPECIAL
)
1551 flags
|= JOB_SPECIAL
;
1554 job
->tailCmds
= NULL
;
1557 * Set the initial value of the flags for this job based on the global
1558 * ones and the node's attributes... Any flags supplied by the caller
1559 * are also added to the field.
1562 if (Targ_Ignore(gn
)) {
1563 job
->flags
|= JOB_IGNERR
;
1565 if (Targ_Silent(gn
)) {
1566 job
->flags
|= JOB_SILENT
;
1568 job
->flags
|= flags
;
1571 * Check the commands now so any attributes from .DEFAULT have a chance
1572 * to migrate to the node
1574 cmdsOK
= Job_CheckCommands(gn
, Error
);
1576 job
->inPollfd
= NULL
;
1578 * If the -n flag wasn't given, we open up OUR (not the child's)
1579 * temporary file to stuff commands in it. The thing is rd/wr so we don't
1580 * need to reopen it to feed it to the shell. If the -n flag *was* given,
1581 * we just set the file to be stdout. Cute, huh?
1583 if (((gn
->type
& OP_MAKE
) && !(noRecursiveExecute
)) ||
1584 (!noExecute
&& !touchFlag
)) {
1586 * tfile is the name of a file into which all shell commands are
1587 * put. It is removed before the child shell is executed, unless
1588 * DEBUG(SCRIPT) is set.
1593 * We're serious here, but if the commands were bogus, we're
1597 PrintOnError(gn
, NULL
); /* provide some clue */
1602 tfd
= mkTempFile(TMPPAT
, &tfile
);
1604 (void)eunlink(tfile
);
1605 JobSigUnlock(&mask
);
1607 job
->cmdFILE
= fdopen(tfd
, "w+");
1608 if (job
->cmdFILE
== NULL
) {
1609 Punt("Could not fdopen %s", tfile
);
1611 (void)fcntl(FILENO(job
->cmdFILE
), F_SETFD
, FD_CLOEXEC
);
1613 * Send the commands to the command file, flush all its buffers then
1614 * rewind and remove the thing.
1620 meta_job_start(job
, gn
);
1621 if (Targ_Silent(gn
)) { /* might have changed */
1622 job
->flags
|= JOB_SILENT
;
1627 * We can do all the commands at once. hooray for sanity
1630 Lst_ForEach(gn
->commands
, JobPrintCommand
, job
);
1633 * If we didn't print out any commands to the shell script,
1634 * there's not much point in executing the shell, is there?
1636 if (numCommands
== 0) {
1641 } else if (NoExecute(gn
)) {
1643 * Not executing anything -- just print all the commands to stdout
1644 * in one fell swoop. This will still set up job->tailCmds correctly.
1646 if (lastNode
!= gn
) {
1647 MESSAGE(stdout
, gn
);
1650 job
->cmdFILE
= stdout
;
1652 * Only print the commands if they're ok, but don't die if they're
1653 * not -- just let the user know they're bad and keep going. It
1654 * doesn't do any harm in this case and may do some good.
1657 Lst_ForEach(gn
->commands
, JobPrintCommand
, job
);
1660 * Don't execute the shell, thank you.
1665 * Just touch the target and note that no shell should be executed.
1666 * Set cmdFILE to stdout to make life easier. Check the commands, too,
1667 * but don't die if they're no good -- it does no harm to keep working
1670 job
->cmdFILE
= stdout
;
1671 Job_Touch(gn
, job
->flags
&JOB_SILENT
);
1674 /* Just in case it isn't already... */
1675 (void)fflush(job
->cmdFILE
);
1678 * If we're not supposed to execute a shell, don't.
1681 if (!(job
->flags
& JOB_SPECIAL
))
1684 * Unlink and close the command file if we opened one
1686 if (job
->cmdFILE
!= stdout
) {
1687 if (job
->cmdFILE
!= NULL
) {
1688 (void)fclose(job
->cmdFILE
);
1689 job
->cmdFILE
= NULL
;
1694 * We only want to work our way up the graph if we aren't here because
1695 * the commands for the job were no good.
1697 if (cmdsOK
&& aborting
== 0) {
1698 if (job
->tailCmds
!= NULL
) {
1699 Lst_ForEachFrom(job
->node
->commands
, job
->tailCmds
,
1703 job
->node
->made
= MADE
;
1704 Make_Update(job
->node
);
1706 job
->job_state
= JOB_ST_FREE
;
1707 return cmdsOK
? JOB_FINISHED
: JOB_ERROR
;
1711 * Set up the control arguments to the shell. This is based on the flags
1712 * set earlier for this job.
1714 JobMakeArgv(job
, argv
);
1716 /* Create the pipe by which we'll get the shell's output. */
1717 JobCreatePipe(job
, 3);
1720 return(JOB_RUNNING
);
1724 JobOutput(Job
*job
, char *cp
, char *endp
, int msg
)
1728 if (commandShell
->noPrint
) {
1729 ecp
= Str_FindSubstring(cp
, commandShell
->noPrint
);
1730 while (ecp
!= NULL
) {
1733 if (!beSilent
&& msg
&& job
->node
!= lastNode
) {
1734 MESSAGE(stdout
, job
->node
);
1735 lastNode
= job
->node
;
1738 * The only way there wouldn't be a newline after
1739 * this line is if it were the last in the buffer.
1740 * however, since the non-printable comes after it,
1741 * there must be a newline, so we don't print one.
1743 (void)fprintf(stdout
, "%s", cp
);
1744 (void)fflush(stdout
);
1746 cp
= ecp
+ commandShell
->noPLen
;
1749 * Still more to print, look again after skipping
1750 * the whitespace following the non-printable
1754 while (*cp
== ' ' || *cp
== '\t' || *cp
== '\n') {
1757 ecp
= Str_FindSubstring(cp
, commandShell
->noPrint
);
1767 *-----------------------------------------------------------------------
1769 * This function is called at different times depending on
1770 * whether the user has specified that output is to be collected
1771 * via pipes or temporary files. In the former case, we are called
1772 * whenever there is something to read on the pipe. We collect more
1773 * output from the given job and store it in the job's outBuf. If
1774 * this makes up a line, we print it tagged by the job's identifier,
1776 * If output has been collected in a temporary file, we open the
1777 * file and read it line by line, transfering it to our own
1778 * output channel until the file is empty. At which point we
1779 * remove the temporary file.
1780 * In both cases, however, we keep our figurative eye out for the
1781 * 'noPrint' line for the shell from which the output came. If
1782 * we recognize a line, we don't print it. If the command is not
1783 * alone on the line (the character after it is not \0 or \n), we
1784 * do print whatever follows it.
1787 * job the job whose output needs printing
1788 * finish TRUE if this is the last time we'll be called
1795 * curPos may be shifted as may the contents of outBuf.
1796 *-----------------------------------------------------------------------
1799 JobDoOutput(Job
*job
, Boolean finish
)
1801 Boolean gotNL
= FALSE
; /* true if got a newline */
1802 Boolean fbuf
; /* true if our buffer filled up */
1803 int nr
; /* number of bytes read */
1804 int i
; /* auxiliary index into outBuf */
1805 int max
; /* limit for i (end of current data) */
1806 int nRead
; /* (Temporary) number of bytes read */
1809 * Read as many bytes as will fit in the buffer.
1815 nRead
= read(job
->inPipe
, &job
->outBuf
[job
->curPos
],
1816 JOB_BUFSIZE
- job
->curPos
);
1818 if (errno
== EAGAIN
)
1821 perror("JobDoOutput(piperead)");
1829 * If we hit the end-of-file (the job is dead), we must flush its
1830 * remaining output, so pretend we read a newline if there's any
1831 * output remaining in the buffer.
1832 * Also clear the 'finish' flag so we stop looping.
1834 if ((nr
== 0) && (job
->curPos
!= 0)) {
1835 job
->outBuf
[job
->curPos
] = '\n';
1838 } else if (nr
== 0) {
1843 * Look for the last newline in the bytes we just got. If there is
1844 * one, break out of the loop with 'i' as its index and gotNL set
1847 max
= job
->curPos
+ nr
;
1848 for (i
= job
->curPos
+ nr
- 1; i
>= job
->curPos
; i
--) {
1849 if (job
->outBuf
[i
] == '\n') {
1852 } else if (job
->outBuf
[i
] == '\0') {
1856 job
->outBuf
[i
] = ' ';
1862 if (job
->curPos
== JOB_BUFSIZE
) {
1864 * If we've run out of buffer space, we have no choice
1865 * but to print the stuff. sigh.
1871 if (gotNL
|| fbuf
) {
1873 * Need to send the output to the screen. Null terminate it
1874 * first, overwriting the newline character if there was one.
1875 * So long as the line isn't one we should filter (according
1876 * to the shell description), we print the line, preceded
1877 * by a target banner if this target isn't the same as the
1878 * one for which we last printed something.
1879 * The rest of the data in the buffer are then shifted down
1880 * to the start of the buffer and curPos is set accordingly.
1882 job
->outBuf
[i
] = '\0';
1883 if (i
>= job
->curPos
) {
1886 cp
= JobOutput(job
, job
->outBuf
, &job
->outBuf
[i
], FALSE
);
1889 * There's still more in that thar buffer. This time, though,
1890 * we know there's no newline at the end, so we add one of
1891 * our own free will.
1894 if (!beSilent
&& job
->node
!= lastNode
) {
1895 MESSAGE(stdout
, job
->node
);
1896 lastNode
= job
->node
;
1900 meta_job_output(job
, cp
, gotNL
? "\n" : "");
1903 (void)fprintf(stdout
, "%s%s", cp
, gotNL
? "\n" : "");
1904 (void)fflush(stdout
);
1908 * max is the last offset still in the buffer. Move any remaining
1909 * characters to the start of the buffer and update the end marker
1913 (void)memmove(job
->outBuf
, &job
->outBuf
[i
+ 1], max
- (i
+ 1));
1914 job
->curPos
= max
- (i
+ 1);
1922 * If the finish flag is true, we must loop until we hit
1923 * end-of-file on the pipe. This is guaranteed to happen
1924 * eventually since the other end of the pipe is now closed
1925 * (we closed it explicitly and the child has exited). When
1926 * we do get an EOF, finish will be set FALSE and we'll fall
1938 * Unfortunately it is too complicated to run .BEGIN, .END,
1939 * and .INTERRUPT job in the parallel job module. This has
1940 * the nice side effect that it avoids a lot of other problems.
1942 Lst lst
= Lst_Init(FALSE
);
1943 Lst_AtEnd(lst
, targ
);
1944 (void)Make_Run(lst
);
1945 Lst_Destroy(lst
, NULL
);
1946 JobStart(targ
, JOB_SPECIAL
);
1947 while (jobTokensRunning
) {
1951 Compat_Make(targ
, targ
);
1952 if (targ
->made
== ERROR
) {
1953 PrintOnError(targ
, "\n\nStop.");
1960 *-----------------------------------------------------------------------
1961 * Job_CatchChildren --
1962 * Handle the exit of a child. Called from Make_Make.
1965 * block TRUE if should block on the wait
1971 * The job descriptor is removed from the list of children.
1974 * We do waits, blocking or not, according to the wisdom of our
1975 * caller, until there are no more children to report. For each
1976 * job, call JobFinish to finish things off.
1978 *-----------------------------------------------------------------------
1982 Job_CatchChildren(void)
1984 int pid
; /* pid of dead child */
1985 WAIT_T status
; /* Exit/termination status */
1988 * Don't even bother if we know there's no one around.
1990 if (jobTokensRunning
== 0)
1993 while ((pid
= waitpid((pid_t
) -1, &status
, WNOHANG
| WUNTRACED
)) > 0) {
1995 (void)fprintf(debug_file
, "Process %d exited/stopped status %x.\n", pid
,
1996 WAIT_STATUS(status
));
1998 JobReapChild(pid
, status
, TRUE
);
2003 * It is possible that wait[pid]() was called from elsewhere,
2004 * this lets us reap jobs regardless.
2007 JobReapChild(pid_t pid
, WAIT_T status
, Boolean isJobs
)
2009 Job
*job
; /* job descriptor for dead child */
2012 * Don't even bother if we know there's no one around.
2014 if (jobTokensRunning
== 0)
2017 job
= JobFindPid(pid
, JOB_ST_RUNNING
, isJobs
);
2020 if (!lurking_children
)
2021 Error("Child (%d) status %x not in table?", pid
, status
);
2023 return; /* not ours */
2025 if (WIFSTOPPED(status
)) {
2027 (void)fprintf(debug_file
, "Process %d (%s) stopped.\n",
2028 job
->pid
, job
->node
->name
);
2030 if (!make_suspended
) {
2031 switch (WSTOPSIG(status
)) {
2033 (void)printf("*** [%s] Suspended\n", job
->node
->name
);
2036 (void)printf("*** [%s] Stopped\n", job
->node
->name
);
2039 (void)printf("*** [%s] Stopped -- signal %d\n",
2040 job
->node
->name
, WSTOPSIG(status
));
2042 job
->job_suspended
= 1;
2044 (void)fflush(stdout
);
2048 job
->job_state
= JOB_ST_FINISHED
;
2049 job
->exit_status
= WAIT_STATUS(status
);
2051 JobFinish(job
, status
);
2055 *-----------------------------------------------------------------------
2056 * Job_CatchOutput --
2057 * Catch the output from our children, if we're using
2058 * pipes do so. Otherwise just block time until we get a
2059 * signal(most likely a SIGCHLD) since there's no point in
2060 * just spinning when there's nothing to do and the reaping
2061 * of a child can wait for a while.
2067 * Output is read from pipes if we're piping.
2068 * -----------------------------------------------------------------------
2071 Job_CatchOutput(void)
2077 (void)fflush(stdout
);
2079 /* The first fd in the list is the job token pipe */
2081 nready
= poll(fds
+ 1 - wantToken
, nfds
- 1 + wantToken
, POLL_MSEC
);
2082 } while (nready
< 0 && errno
== EINTR
);
2085 Punt("poll: %s", strerror(errno
));
2087 if (nready
> 0 && readyfd(&childExitJob
)) {
2090 count
= read(childExitJob
.inPipe
, &token
, 1);
2093 Punt("unexpected eof on token pipe");
2095 Punt("token pipe read: %s", strerror(errno
));
2097 if (token
== DO_JOB_RESUME
[0])
2098 /* Complete relay requested from our SIGCONT handler */
2107 Job_CatchChildren();
2111 for (i
= 2; i
< nfds
; i
++) {
2112 if (!fds
[i
].revents
)
2115 if (job
->job_state
== JOB_ST_RUNNING
)
2116 JobDoOutput(job
, FALSE
);
2123 *-----------------------------------------------------------------------
2125 * Start the creation of a target. Basically a front-end for
2126 * JobStart used by the Make module.
2132 * Another job is started.
2134 *-----------------------------------------------------------------------
2139 (void)JobStart(gn
, 0);
2145 if (shellPath
== NULL
) {
2147 * We are using the default shell, which may be an absolute
2148 * path if DEFSHELL_CUSTOM is defined.
2150 shellName
= commandShell
->name
;
2151 #ifdef DEFSHELL_CUSTOM
2152 if (*shellName
== '/') {
2153 shellPath
= shellName
;
2154 shellName
= strrchr(shellPath
, '/');
2158 shellPath
= str_concat(_PATH_DEFSHELLDIR
, shellName
, STR_ADDSLASH
);
2160 if (commandShell
->exit
== NULL
) {
2161 commandShell
->exit
= "";
2163 if (commandShell
->echo
== NULL
) {
2164 commandShell
->echo
= "";
2166 if (commandShell
->hasErrCtl
&& *commandShell
->exit
) {
2168 strcmp(commandShell
->exit
, &shellErrFlag
[1]) != 0) {
2170 shellErrFlag
= NULL
;
2172 if (!shellErrFlag
) {
2173 int n
= strlen(commandShell
->exit
) + 2;
2175 shellErrFlag
= bmake_malloc(n
);
2177 snprintf(shellErrFlag
, n
, "-%s", commandShell
->exit
);
2180 } else if (shellErrFlag
) {
2182 shellErrFlag
= NULL
;
2187 * Returns the string literal that is used in the current command shell
2188 * to produce a newline character.
2191 Shell_GetNewline(void)
2194 return commandShell
->newline
;
2203 } else if (!Var_Exists(MAKE_JOB_PREFIX
, VAR_GLOBAL
)) {
2204 Var_Set(MAKE_JOB_PREFIX
, "---", VAR_GLOBAL
, 0);
2207 targPrefix
= Var_Subst(NULL
, "${" MAKE_JOB_PREFIX
"}",
2208 VAR_GLOBAL
, VARF_WANTRES
);
2212 *-----------------------------------------------------------------------
2214 * Initialize the process module
2222 * lists and counters are initialized
2223 *-----------------------------------------------------------------------
2229 /* Allocate space for all the job info */
2230 job_table
= bmake_malloc(maxJobs
* sizeof *job_table
);
2231 memset(job_table
, 0, maxJobs
* sizeof *job_table
);
2232 job_table_end
= job_table
+ maxJobs
;
2241 * There is a non-zero chance that we already have children.
2242 * eg after 'make -f- <<EOF'
2243 * Since their termination causes a 'Child (pid) not in table' message,
2244 * Collect the status of any that are already dead, and suppress the
2245 * error message if there are any undead ones.
2249 rval
= waitpid((pid_t
) -1, &status
, WNOHANG
);
2253 lurking_children
= 1;
2259 JobCreatePipe(&childExitJob
, 3);
2261 /* We can only need to wait for tokens, children and output from each job */
2262 fds
= bmake_malloc(sizeof (*fds
) * (2 + maxJobs
));
2263 jobfds
= bmake_malloc(sizeof (*jobfds
) * (2 + maxJobs
));
2265 /* These are permanent entries and take slots 0 and 1 */
2266 watchfd(&tokenWaitJob
);
2267 watchfd(&childExitJob
);
2269 sigemptyset(&caught_signals
);
2271 * Install a SIGCHLD handler.
2273 (void)bmake_signal(SIGCHLD
, JobChildSig
);
2274 sigaddset(&caught_signals
, SIGCHLD
);
2276 #define ADDSIG(s,h) \
2277 if (bmake_signal(s, SIG_IGN) != SIG_IGN) { \
2278 sigaddset(&caught_signals, s); \
2279 (void)bmake_signal(s, h); \
2283 * Catch the four signals that POSIX specifies if they aren't ignored.
2284 * JobPassSig will take care of calling JobInterrupt if appropriate.
2286 ADDSIG(SIGINT
, JobPassSig_int
)
2287 ADDSIG(SIGHUP
, JobPassSig_term
)
2288 ADDSIG(SIGTERM
, JobPassSig_term
)
2289 ADDSIG(SIGQUIT
, JobPassSig_term
)
2292 * There are additional signals that need to be caught and passed if
2293 * either the export system wants to be told directly of signals or if
2294 * we're giving each job its own process group (since then it won't get
2295 * signals from the terminal driver as we own the terminal)
2297 ADDSIG(SIGTSTP
, JobPassSig_suspend
)
2298 ADDSIG(SIGTTOU
, JobPassSig_suspend
)
2299 ADDSIG(SIGTTIN
, JobPassSig_suspend
)
2300 ADDSIG(SIGWINCH
, JobCondPassSig
)
2301 ADDSIG(SIGCONT
, JobContinueSig
)
2304 (void)Job_RunTarget(".BEGIN", NULL
);
2305 postCommands
= Targ_FindNode(".END", TARG_CREATE
);
2308 static void JobSigReset(void)
2311 if (sigismember(&caught_signals, s)) { \
2312 (void)bmake_signal(s, SIG_DFL); \
2325 (void)bmake_signal(SIGCHLD
, SIG_DFL
);
2329 *-----------------------------------------------------------------------
2331 * Find a shell in 'shells' given its name.
2334 * A pointer to the Shell structure.
2339 *-----------------------------------------------------------------------
2342 JobMatchShell(const char *name
)
2346 for (sh
= shells
; sh
->name
!= NULL
; sh
++) {
2347 if (strcmp(name
, sh
->name
) == 0)
2354 *-----------------------------------------------------------------------
2356 * Parse a shell specification and set up commandShell, shellPath
2357 * and shellName appropriately.
2360 * line The shell spec
2363 * FAILURE if the specification was incorrect.
2366 * commandShell points to a Shell structure (either predefined or
2367 * created from the shell spec), shellPath is the full path of the
2368 * shell described by commandShell, while shellName is just the
2369 * final component of shellPath.
2372 * A shell specification consists of a .SHELL target, with dependency
2373 * operator, followed by a series of blank-separated words. Double
2374 * quotes can be used to use blanks in words. A backslash escapes
2375 * anything (most notably a double-quote and a space) and
2376 * provides the functionality it does in C. Each word consists of
2377 * keyword and value separated by an equal sign. There should be no
2378 * unnecessary spaces in the word. The keywords are as follows:
2379 * name Name of shell.
2380 * path Location of shell.
2381 * quiet Command to turn off echoing.
2382 * echo Command to turn echoing on
2383 * filter Result of turning off echoing that shouldn't be
2385 * echoFlag Flag to turn echoing on at the start
2386 * errFlag Flag to turn error checking on at the start
2387 * hasErrCtl True if shell has error checking control
2388 * newline String literal to represent a newline char
2389 * check Command to turn on error checking if hasErrCtl
2390 * is TRUE or template of command to echo a command
2391 * for which error checking is off if hasErrCtl is
2393 * ignore Command to turn off error checking if hasErrCtl
2394 * is TRUE or template of command to execute a
2395 * command so as to ignore any errors it returns if
2396 * hasErrCtl is FALSE.
2398 *-----------------------------------------------------------------------
2401 Job_ParseShell(char *line
)
2408 Boolean fullSpec
= FALSE
;
2411 while (isspace((unsigned char)*line
)) {
2415 free(UNCONST(shellArgv
));
2417 memset(&newShell
, 0, sizeof(newShell
));
2420 * Parse the specification by keyword
2422 words
= brk_string(line
, &argc
, TRUE
, &path
);
2423 if (words
== NULL
) {
2424 Error("Unterminated quoted string [%s]", line
);
2429 for (path
= NULL
, argv
= words
; argc
!= 0; argc
--, argv
++) {
2430 if (strncmp(*argv
, "path=", 5) == 0) {
2432 } else if (strncmp(*argv
, "name=", 5) == 0) {
2433 newShell
.name
= &argv
[0][5];
2435 if (strncmp(*argv
, "quiet=", 6) == 0) {
2436 newShell
.echoOff
= &argv
[0][6];
2437 } else if (strncmp(*argv
, "echo=", 5) == 0) {
2438 newShell
.echoOn
= &argv
[0][5];
2439 } else if (strncmp(*argv
, "filter=", 7) == 0) {
2440 newShell
.noPrint
= &argv
[0][7];
2441 newShell
.noPLen
= strlen(newShell
.noPrint
);
2442 } else if (strncmp(*argv
, "echoFlag=", 9) == 0) {
2443 newShell
.echo
= &argv
[0][9];
2444 } else if (strncmp(*argv
, "errFlag=", 8) == 0) {
2445 newShell
.exit
= &argv
[0][8];
2446 } else if (strncmp(*argv
, "hasErrCtl=", 10) == 0) {
2447 char c
= argv
[0][10];
2448 newShell
.hasErrCtl
= !((c
!= 'Y') && (c
!= 'y') &&
2449 (c
!= 'T') && (c
!= 't'));
2450 } else if (strncmp(*argv
, "newline=", 8) == 0) {
2451 newShell
.newline
= &argv
[0][8];
2452 } else if (strncmp(*argv
, "check=", 6) == 0) {
2453 newShell
.errCheck
= &argv
[0][6];
2454 } else if (strncmp(*argv
, "ignore=", 7) == 0) {
2455 newShell
.ignErr
= &argv
[0][7];
2456 } else if (strncmp(*argv
, "errout=", 7) == 0) {
2457 newShell
.errOut
= &argv
[0][7];
2458 } else if (strncmp(*argv
, "comment=", 8) == 0) {
2459 newShell
.commentChar
= argv
[0][8];
2461 Parse_Error(PARSE_FATAL
, "Unknown keyword \"%s\"",
2472 * If no path was given, the user wants one of the pre-defined shells,
2473 * yes? So we find the one s/he wants with the help of JobMatchShell
2474 * and set things up the right way. shellPath will be set up by
2477 if (newShell
.name
== NULL
) {
2478 Parse_Error(PARSE_FATAL
, "Neither path nor name specified");
2482 if ((sh
= JobMatchShell(newShell
.name
)) == NULL
) {
2483 Parse_Error(PARSE_WARNING
, "%s: No matching shell",
2489 shellName
= newShell
.name
;
2491 /* Shell_Init has already been called! Do it again. */
2492 free(UNCONST(shellPath
));
2499 * The user provided a path. If s/he gave nothing else (fullSpec is
2500 * FALSE), try and find a matching shell in the ones we know of.
2501 * Else we just take the specification at its word and copy it
2502 * to a new location. In either case, we need to record the
2503 * path the user gave for the shell.
2506 path
= strrchr(path
, '/');
2508 path
= UNCONST(shellPath
);
2512 if (newShell
.name
!= NULL
) {
2513 shellName
= newShell
.name
;
2518 if ((sh
= JobMatchShell(shellName
)) == NULL
) {
2519 Parse_Error(PARSE_WARNING
, "%s: No matching shell",
2526 commandShell
= bmake_malloc(sizeof(Shell
));
2527 *commandShell
= newShell
;
2529 /* this will take care of shellErrFlag */
2533 if (commandShell
->echoOn
&& commandShell
->echoOff
) {
2534 commandShell
->hasEchoCtl
= TRUE
;
2537 if (!commandShell
->hasErrCtl
) {
2538 if (commandShell
->errCheck
== NULL
) {
2539 commandShell
->errCheck
= "";
2541 if (commandShell
->ignErr
== NULL
) {
2542 commandShell
->ignErr
= "%s\n";
2547 * Do not free up the words themselves, since they might be in use by the
2548 * shell specification.
2555 *-----------------------------------------------------------------------
2557 * Handle the receipt of an interrupt.
2560 * runINTERRUPT Non-zero if commands for the .INTERRUPT target
2561 * should be executed
2562 * signo signal received
2568 * All children are killed. Another job will be started if the
2569 * .INTERRUPT target was given.
2570 *-----------------------------------------------------------------------
2573 JobInterrupt(int runINTERRUPT
, int signo
)
2575 Job
*job
; /* job descriptor in that element */
2576 GNode
*interrupt
; /* the node describing the .INTERRUPT target */
2580 aborting
= ABORT_INTERRUPT
;
2584 for (job
= job_table
; job
< job_table_end
; job
++) {
2585 if (job
->job_state
!= JOB_ST_RUNNING
)
2590 if ((gn
->type
& (OP_JOIN
|OP_PHONY
)) == 0 && !Targ_Precious(gn
)) {
2591 char *file
= (gn
->path
== NULL
? gn
->name
: gn
->path
);
2592 if (!noExecute
&& eunlink(file
) != -1) {
2593 Error("*** %s removed", file
);
2598 (void)fprintf(debug_file
,
2599 "JobInterrupt passing signal %d to child %d.\n",
2602 KILLPG(job
->pid
, signo
);
2606 JobSigUnlock(&mask
);
2608 if (runINTERRUPT
&& !touchFlag
) {
2609 interrupt
= Targ_FindNode(".INTERRUPT", TARG_NOCREATE
);
2610 if (interrupt
!= NULL
) {
2611 ignoreErrors
= FALSE
;
2615 Trace_Log(MAKEINTR
, 0);
2620 *-----------------------------------------------------------------------
2622 * Do final processing such as the running of the commands
2623 * attached to the .END target.
2626 * Number of errors reported.
2630 *-----------------------------------------------------------------------
2635 if (postCommands
!= NULL
&&
2636 (!Lst_IsEmpty(postCommands
->commands
) ||
2637 !Lst_IsEmpty(postCommands
->children
))) {
2639 Error("Errors reported so .END ignored");
2641 JobRun(postCommands
);
2648 *-----------------------------------------------------------------------
2650 * Cleanup any memory used by the jobs module
2657 *-----------------------------------------------------------------------
2668 *-----------------------------------------------------------------------
2670 * Waits for all running jobs to finish and returns. Sets 'aborting'
2671 * to ABORT_WAIT to prevent other jobs from starting.
2677 * Currently running jobs finish.
2679 *-----------------------------------------------------------------------
2684 aborting
= ABORT_WAIT
;
2685 while (jobTokensRunning
!= 0) {
2692 *-----------------------------------------------------------------------
2694 * Abort all currently running jobs without handling output or anything.
2695 * This function is to be called only in the event of a major
2696 * error. Most definitely NOT to be called from JobInterrupt.
2702 * All children are killed, not just the firstborn
2703 *-----------------------------------------------------------------------
2708 Job
*job
; /* the job descriptor in that element */
2711 aborting
= ABORT_ERROR
;
2713 if (jobTokensRunning
) {
2714 for (job
= job_table
; job
< job_table_end
; job
++) {
2715 if (job
->job_state
!= JOB_ST_RUNNING
)
2718 * kill the child process with increasingly drastic signals to make
2719 * darn sure it's dead.
2721 KILLPG(job
->pid
, SIGINT
);
2722 KILLPG(job
->pid
, SIGKILL
);
2727 * Catch as many children as want to report in at first, then give up
2729 while (waitpid((pid_t
) -1, &foo
, WNOHANG
) > 0)
2735 *-----------------------------------------------------------------------
2737 * Tries to restart stopped jobs if there are slots available.
2738 * Called in process context in response to a SIGCONT.
2746 *-----------------------------------------------------------------------
2749 JobRestartJobs(void)
2753 for (job
= job_table
; job
< job_table_end
; job
++) {
2754 if (job
->job_state
== JOB_ST_RUNNING
&&
2755 (make_suspended
|| job
->job_suspended
)) {
2757 (void)fprintf(debug_file
, "Restarting stopped job pid %d.\n",
2760 if (job
->job_suspended
) {
2761 (void)printf("*** [%s] Continued\n", job
->node
->name
);
2762 (void)fflush(stdout
);
2764 job
->job_suspended
= 0;
2765 if (KILLPG(job
->pid
, SIGCONT
) != 0 && DEBUG(JOB
)) {
2766 fprintf(debug_file
, "Failed to send SIGCONT to %d\n", job
->pid
);
2769 if (job
->job_state
== JOB_ST_FINISHED
)
2770 /* Job exit deferred after calling waitpid() in a signal handler */
2771 JobFinish(job
, job
->exit_status
);
2779 if (job
->inPollfd
!= NULL
)
2780 Punt("Watching watched job");
2782 fds
[nfds
].fd
= job
->inPipe
;
2783 fds
[nfds
].events
= POLLIN
;
2785 job
->inPollfd
= &fds
[nfds
];
2793 if (job
->inPollfd
== NULL
)
2794 Punt("Unwatching unwatched job");
2795 i
= job
->inPollfd
- fds
;
2798 * Move last job in table into hole made by dead job.
2802 jobfds
[i
] = jobfds
[nfds
];
2803 jobfds
[i
]->inPollfd
= &fds
[i
];
2805 job
->inPollfd
= NULL
;
2811 if (job
->inPollfd
== NULL
)
2812 Punt("Polling unwatched job");
2813 return (job
->inPollfd
->revents
& POLLIN
) != 0;
2817 *-----------------------------------------------------------------------
2819 * Put a token into the job pipe so that some make process can start
2823 * Allows more build jobs to be spawned somewhere.
2825 *-----------------------------------------------------------------------
2831 char tok
= JOB_TOKENS
[aborting
], tok1
;
2833 /* If we are depositing an error token flush everything else */
2834 while (tok
!= '+' && read(tokenWaitJob
.inPipe
, &tok1
, 1) == 1)
2838 fprintf(debug_file
, "(%d) aborting %d, deposit token %c\n",
2839 getpid(), aborting
, JOB_TOKENS
[aborting
]);
2840 while (write(tokenWaitJob
.outPipe
, &tok
, 1) == -1 && errno
== EAGAIN
)
2845 *-----------------------------------------------------------------------
2846 * Job_ServerStartTokenAdd --
2847 * Prep the job token pipe in the root make process.
2849 *-----------------------------------------------------------------------
2853 Job_ServerStart(int max_tokens
, int jp_0
, int jp_1
)
2858 if (jp_0
>= 0 && jp_1
>= 0) {
2859 /* Pipe passed in from parent */
2860 tokenWaitJob
.inPipe
= jp_0
;
2861 tokenWaitJob
.outPipe
= jp_1
;
2862 (void)fcntl(jp_0
, F_SETFD
, FD_CLOEXEC
);
2863 (void)fcntl(jp_1
, F_SETFD
, FD_CLOEXEC
);
2867 JobCreatePipe(&tokenWaitJob
, 15);
2869 snprintf(jobarg
, sizeof(jobarg
), "%d,%d",
2870 tokenWaitJob
.inPipe
, tokenWaitJob
.outPipe
);
2872 Var_Append(MAKEFLAGS
, "-J", VAR_GLOBAL
);
2873 Var_Append(MAKEFLAGS
, jobarg
, VAR_GLOBAL
);
2876 * Preload the job pipe with one token per job, save the one
2877 * "extra" token for the primary job.
2879 * XXX should clip maxJobs against PIPE_BUF -- if max_tokens is
2880 * larger than the write buffer size of the pipe, we will
2883 for (i
= 1; i
< max_tokens
; i
++)
2888 *-----------------------------------------------------------------------
2889 * Job_TokenReturn --
2890 * Return a withdrawn token to the pool.
2892 *-----------------------------------------------------------------------
2896 Job_TokenReturn(void)
2899 if (jobTokensRunning
< 0)
2900 Punt("token botch");
2901 if (jobTokensRunning
|| JOB_TOKENS
[aborting
] != '+')
2906 *-----------------------------------------------------------------------
2907 * Job_TokenWithdraw --
2908 * Attempt to withdraw a token from the pool.
2911 * Returns TRUE if a token was withdrawn, and FALSE if the pool
2912 * is currently empty.
2915 * If pool is empty, set wantToken so that we wake up
2916 * when a token is released.
2918 *-----------------------------------------------------------------------
2923 Job_TokenWithdraw(void)
2930 fprintf(debug_file
, "Job_TokenWithdraw(%d): aborting %d, running %d\n",
2931 getpid(), aborting
, jobTokensRunning
);
2933 if (aborting
|| (jobTokensRunning
>= maxJobs
))
2936 count
= read(tokenWaitJob
.inPipe
, &tok
, 1);
2938 Fatal("eof on job pipe!");
2939 if (count
< 0 && jobTokensRunning
!= 0) {
2940 if (errno
!= EAGAIN
) {
2941 Fatal("job pipe read: %s", strerror(errno
));
2944 fprintf(debug_file
, "(%d) blocked for token\n", getpid());
2949 if (count
== 1 && tok
!= '+') {
2950 /* make being abvorted - remove any other job tokens */
2952 fprintf(debug_file
, "(%d) aborted by token %c\n", getpid(), tok
);
2953 while (read(tokenWaitJob
.inPipe
, &tok1
, 1) == 1)
2955 /* And put the stopper back */
2956 while (write(tokenWaitJob
.outPipe
, &tok
, 1) == -1 && errno
== EAGAIN
)
2958 Fatal("A failure has been detected in another branch of the parallel make");
2961 if (count
== 1 && jobTokensRunning
== 0)
2962 /* We didn't want the token really */
2963 while (write(tokenWaitJob
.outPipe
, &tok
, 1) == -1 && errno
== EAGAIN
)
2968 fprintf(debug_file
, "(%d) withdrew token\n", getpid());
2973 *-----------------------------------------------------------------------
2975 * Run the named target if found. If a filename is specified, then
2976 * set that to the sources.
2982 * exits if the target fails.
2984 *-----------------------------------------------------------------------
2987 Job_RunTarget(const char *target
, const char *fname
) {
2988 GNode
*gn
= Targ_FindNode(target
, TARG_NOCREATE
);
2994 Var_Set(ALLSRC
, fname
, gn
, 0);
2997 if (gn
->made
== ERROR
) {
2998 PrintOnError(gn
, "\n\nStop.");
3006 emul_poll(struct pollfd
*fd
, int nfd
, int timeout
)
3009 int i
, maxfd
, nselect
, npoll
;
3010 struct timeval tv
, *tvp
;
3017 for (i
= 0; i
< nfd
; i
++) {
3020 if (fd
[i
].events
& POLLIN
)
3021 FD_SET(fd
[i
].fd
, &rfds
);
3023 if (fd
[i
].events
& POLLOUT
)
3024 FD_SET(fd
[i
].fd
, &wfds
);
3026 if (fd
[i
].fd
> maxfd
)
3030 if (maxfd
>= FD_SETSIZE
) {
3031 Punt("Ran out of fd_set slots; "
3032 "recompile with a larger FD_SETSIZE.");
3038 usecs
= timeout
* 1000;
3039 tv
.tv_sec
= usecs
/ 1000000;
3040 tv
.tv_usec
= usecs
% 1000000;
3044 nselect
= select(maxfd
+ 1, &rfds
, &wfds
, 0, tvp
);
3050 for (i
= 0; i
< nfd
; i
++) {
3051 if (FD_ISSET(fd
[i
].fd
, &rfds
))
3052 fd
[i
].revents
|= POLLIN
;
3054 if (FD_ISSET(fd
[i
].fd
, &wfds
))
3055 fd
[i
].revents
|= POLLOUT
;
3063 #endif /* USE_SELECT */