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 * FreeBSD: traditionally .MAKE is not required to
175 * pass jobs queue to sub-makes.
176 * Use .MAKE.ALWAYS_PASS_JOB_QUEUE=no to disable.
178 #define MAKE_ALWAYS_PASS_JOB_QUEUE ".MAKE.ALWAYS_PASS_JOB_QUEUE"
179 static int Always_pass_job_queue
= TRUE
;
181 * FreeBSD: aborting entire parallel make isn't always
182 * desired. When doing tinderbox for example, failure of
183 * one architecture should not stop all.
184 * We still want to bail on interrupt though.
186 #define MAKE_JOB_ERROR_TOKEN "MAKE_JOB_ERROR_TOKEN"
187 static int Job_error_token
= TRUE
;
190 * error handling variables
192 static int errors
= 0; /* number of errors reported */
193 static int aborting
= 0; /* why is the make aborting? */
194 #define ABORT_ERROR 1 /* Because of an error */
195 #define ABORT_INTERRUPT 2 /* Because it was interrupted */
196 #define ABORT_WAIT 3 /* Waiting for jobs to finish */
197 #define JOB_TOKENS "+EI+" /* Token to requeue for each abort state */
200 * this tracks the number of tokens currently "out" to build jobs.
202 int jobTokensRunning
= 0;
203 int not_parallel
= 0; /* set if .NOT_PARALLEL */
206 * XXX: Avoid SunOS bug... FILENO() is fp->_file, and file
207 * is a char! So when we go above 127 we turn negative!
209 #define FILENO(a) ((unsigned) fileno(a))
212 * post-make command processing. The node postCommands is really just the
213 * .END target but we keep it around to avoid having to search for it
216 static GNode
*postCommands
= NULL
;
217 /* node containing commands to execute when
218 * everything else is done */
219 static int numCommands
; /* The number of commands actually printed
220 * for a target. Should this number be
221 * 0, no shell will be executed. */
224 * Return values from JobStart.
226 #define JOB_RUNNING 0 /* Job is running */
227 #define JOB_ERROR 1 /* Error in starting the job */
228 #define JOB_FINISHED 2 /* The job is already finished */
231 * Descriptions for various shells.
233 * The build environment may set DEFSHELL_INDEX to one of
234 * DEFSHELL_INDEX_SH, DEFSHELL_INDEX_KSH, or DEFSHELL_INDEX_CSH, to
235 * select one of the prefedined shells as the default shell.
237 * Alternatively, the build environment may set DEFSHELL_CUSTOM to the
238 * name or the full path of a sh-compatible shell, which will be used as
241 * ".SHELL" lines in Makefiles can choose the default shell from the
242 # set defined here, or add additional shells.
245 #ifdef DEFSHELL_CUSTOM
246 #define DEFSHELL_INDEX_CUSTOM 0
247 #define DEFSHELL_INDEX_SH 1
248 #define DEFSHELL_INDEX_KSH 2
249 #define DEFSHELL_INDEX_CSH 3
250 #else /* !DEFSHELL_CUSTOM */
251 #define DEFSHELL_INDEX_SH 0
252 #define DEFSHELL_INDEX_KSH 1
253 #define DEFSHELL_INDEX_CSH 2
254 #endif /* !DEFSHELL_CUSTOM */
256 #ifndef DEFSHELL_INDEX
257 #define DEFSHELL_INDEX 0 /* DEFSHELL_INDEX_CUSTOM or DEFSHELL_INDEX_SH */
258 #endif /* !DEFSHELL_INDEX */
260 static Shell shells
[] = {
261 #ifdef DEFSHELL_CUSTOM
263 * An sh-compatible shell with a non-standard name.
265 * Keep this in sync with the "sh" description below, but avoid
266 * non-portable features that might not be supplied by all
267 * sh-compatible shells.
271 FALSE
, "", "", "", 0,
272 FALSE
, "echo \"%s\"\n", "%s\n", "{ %s \n} || exit $?\n", "'\n'", '#',
276 #endif /* DEFSHELL_CUSTOM */
278 * SH description. Echo control is also possible and, under
279 * sun UNIX anyway, one can even control error checking.
283 FALSE
, "", "", "", 0,
284 FALSE
, "echo \"%s\"\n", "%s\n", "{ %s \n} || exit $?\n", "'\n'", '#',
285 #if defined(MAKE_NATIVE) && defined(__NetBSD__)
297 TRUE
, "set +v", "set -v", "set +v", 6,
298 FALSE
, "echo \"%s\"\n", "%s\n", "{ %s \n} || exit $?\n", "'\n'", '#',
303 * CSH description. The csh can do echo control by playing
304 * with the setting of the 'echo' shell variable. Sadly,
305 * however, it is unable to do error control nicely.
309 TRUE
, "unset verbose", "set verbose", "unset verbose", 10,
310 FALSE
, "echo \"%s\"\n", "csh -c \"%s || exit 0\"\n", "", "'\\\n'", '#',
318 FALSE
, NULL
, NULL
, NULL
, 0,
319 FALSE
, NULL
, NULL
, NULL
, NULL
, 0,
323 static Shell
*commandShell
= &shells
[DEFSHELL_INDEX
]; /* this is the shell to
325 * commands in the Makefile.
327 * Job_ParseShell function */
328 const char *shellPath
= NULL
, /* full pathname of
329 * executable image */
330 *shellName
= NULL
; /* last component of shell */
331 char *shellErrFlag
= NULL
;
332 static const char *shellArgv
= NULL
; /* Custom shell args */
335 STATIC Job
*job_table
; /* The structures that describe them */
336 STATIC Job
*job_table_end
; /* job_table + maxJobs */
337 static int wantToken
; /* we want a token */
338 static int lurking_children
= 0;
339 static int make_suspended
= 0; /* non-zero if we've seen a SIGTSTP (etc) */
342 * Set of descriptors of pipes connected to
343 * the output channels of children
345 static struct pollfd
*fds
= NULL
;
346 static Job
**jobfds
= NULL
;
348 static void watchfd(Job
*);
349 static void clearfd(Job
*);
350 static int readyfd(Job
*);
352 STATIC GNode
*lastNode
; /* The node for which output was most recently
354 static char *targPrefix
= NULL
; /* What we print at the start of TARG_FMT */
355 static Job tokenWaitJob
; /* token wait pseudo-job */
357 static Job childExitJob
; /* child exit pseudo-job */
358 #define CHILD_EXIT "."
359 #define DO_JOB_RESUME "R"
361 #define TARG_FMT "%s %s ---\n" /* Default format */
362 #define MESSAGE(fp, gn) \
363 if (maxJobs != 1 && targPrefix && *targPrefix) \
364 (void)fprintf(fp, TARG_FMT, targPrefix, gn->name)
366 static sigset_t caught_signals
; /* Set of signals we handle */
368 #define KILLPG(pid, sig) kill(-(pid), (sig))
370 #define KILLPG(pid, sig) killpg((pid), (sig))
373 static void JobChildSig(int);
374 static void JobContinueSig(int);
375 static Job
*JobFindPid(int, int, Boolean
);
376 static int JobPrintCommand(void *, void *);
377 static int JobSaveCommand(void *, void *);
378 static void JobClose(Job
*);
379 static void JobExec(Job
*, char **);
380 static void JobMakeArgv(Job
*, char **);
381 static int JobStart(GNode
*, int);
382 static char *JobOutput(Job
*, char *, char *, int);
383 static void JobDoOutput(Job
*, Boolean
);
384 static Shell
*JobMatchShell(const char *);
385 static void JobInterrupt(int, int) MAKE_ATTR_DEAD
;
386 static void JobRestartJobs(void);
387 static void JobTokenAdd(void);
388 static void JobSigLock(sigset_t
*);
389 static void JobSigUnlock(sigset_t
*);
390 static void JobSigReset(void);
392 const char *malloc_options
="A";
395 job_table_dump(const char *where
)
399 fprintf(debug_file
, "job table @ %s\n", where
);
400 for (job
= job_table
; job
< job_table_end
; job
++) {
401 fprintf(debug_file
, "job %d, status %d, flags %d, pid %d\n",
402 (int)(job
- job_table
), job
->job_state
, job
->flags
, job
->pid
);
407 * JobSigLock/JobSigUnlock
409 * Signal lock routines to get exclusive access. Currently used to
410 * protect `jobs' and `stoppedJobs' list manipulations.
412 static void JobSigLock(sigset_t
*omaskp
)
414 if (sigprocmask(SIG_BLOCK
, &caught_signals
, omaskp
) != 0) {
415 Punt("JobSigLock: sigprocmask: %s", strerror(errno
));
420 static void JobSigUnlock(sigset_t
*omaskp
)
422 (void)sigprocmask(SIG_SETMASK
, omaskp
, NULL
);
426 JobCreatePipe(Job
*job
, int minfd
)
430 if (pipe(job
->jobPipe
) == -1)
431 Punt("Cannot create pipe: %s", strerror(errno
));
433 for (i
= 0; i
< 2; i
++) {
434 /* Avoid using low numbered fds */
435 fd
= fcntl(job
->jobPipe
[i
], F_DUPFD
, minfd
);
437 close(job
->jobPipe
[i
]);
438 job
->jobPipe
[i
] = fd
;
442 /* Set close-on-exec flag for both */
443 (void)fcntl(job
->jobPipe
[0], F_SETFD
, FD_CLOEXEC
);
444 (void)fcntl(job
->jobPipe
[1], F_SETFD
, FD_CLOEXEC
);
447 * We mark the input side of the pipe non-blocking; we poll(2) the
448 * pipe when we're waiting for a job token, but we might lose the
449 * race for the token when a new one becomes available, so the read
450 * from the pipe should not block.
452 fcntl(job
->jobPipe
[0], F_SETFL
,
453 fcntl(job
->jobPipe
[0], F_GETFL
, 0) | O_NONBLOCK
);
457 *-----------------------------------------------------------------------
459 * Pass a signal to a job
462 * signop Signal to send it
465 * None, except the job may bite it.
467 *-----------------------------------------------------------------------
470 JobCondPassSig(int signo
)
475 (void)fprintf(debug_file
, "JobCondPassSig(%d) called.\n", signo
);
478 for (job
= job_table
; job
< job_table_end
; job
++) {
479 if (job
->job_state
!= JOB_ST_RUNNING
)
482 (void)fprintf(debug_file
,
483 "JobCondPassSig passing signal %d to child %d.\n",
486 KILLPG(job
->pid
, signo
);
491 *-----------------------------------------------------------------------
496 * signo The signal number we've received
502 * Sends a token on the child exit pipe to wake us up from
505 *-----------------------------------------------------------------------
508 JobChildSig(int signo MAKE_ATTR_UNUSED
)
510 while (write(childExitJob
.outPipe
, CHILD_EXIT
, 1) == -1 && errno
== EAGAIN
)
516 *-----------------------------------------------------------------------
518 * Resume all stopped jobs.
521 * signo The signal number we've received
527 * Jobs start running again.
529 *-----------------------------------------------------------------------
532 JobContinueSig(int signo MAKE_ATTR_UNUSED
)
535 * Defer sending to SIGCONT to our stopped children until we return
536 * from the signal handler.
538 while (write(childExitJob
.outPipe
, DO_JOB_RESUME
, 1) == -1 &&
544 *-----------------------------------------------------------------------
546 * Pass a signal on to all jobs, then resend to ourselves.
549 * signo The signal number we've received
555 * We die by the same signal.
557 *-----------------------------------------------------------------------
559 MAKE_ATTR_DEAD
static void
560 JobPassSig_int(int signo
)
562 /* Run .INTERRUPT target then exit */
563 JobInterrupt(TRUE
, signo
);
566 MAKE_ATTR_DEAD
static void
567 JobPassSig_term(int signo
)
569 /* Dont run .INTERRUPT target then exit */
570 JobInterrupt(FALSE
, signo
);
574 JobPassSig_suspend(int signo
)
576 sigset_t nmask
, omask
;
577 struct sigaction act
;
579 /* Suppress job started/continued messages */
582 /* Pass the signal onto every job */
583 JobCondPassSig(signo
);
586 * Send ourselves the signal now we've given the message to everyone else.
587 * Note we block everything else possible while we're getting the signal.
588 * This ensures that all our jobs get continued when we wake up before
589 * we take any other signal.
592 sigdelset(&nmask
, signo
);
593 (void)sigprocmask(SIG_SETMASK
, &nmask
, &omask
);
595 act
.sa_handler
= SIG_DFL
;
596 sigemptyset(&act
.sa_mask
);
598 (void)sigaction(signo
, &act
, NULL
);
601 (void)fprintf(debug_file
,
602 "JobPassSig passing signal %d to self.\n", signo
);
605 (void)kill(getpid(), signo
);
608 * We've been continued.
610 * A whole host of signals continue to happen!
611 * SIGCHLD for any processes that actually suspended themselves.
612 * SIGCHLD for any processes that exited while we were alseep.
613 * The SIGCONT that actually caused us to wakeup.
615 * Since we defer passing the SIGCONT on to our children until
616 * the main processing loop, we can be sure that all the SIGCHLD
617 * events will have happened by then - and that the waitpid() will
618 * collect the child 'suspended' events.
619 * For correct sequencing we just need to ensure we process the
620 * waitpid() before passign on the SIGCONT.
622 * In any case nothing else is needed here.
625 /* Restore handler and signal mask */
626 act
.sa_handler
= JobPassSig_suspend
;
627 (void)sigaction(signo
, &act
, NULL
);
628 (void)sigprocmask(SIG_SETMASK
, &omask
, NULL
);
632 *-----------------------------------------------------------------------
634 * Compare the pid of the job with the given pid and return 0 if they
635 * are equal. This function is called from Job_CatchChildren
636 * to find the job descriptor of the finished job.
640 * pid process id desired
643 * Job with matching pid
647 *-----------------------------------------------------------------------
650 JobFindPid(int pid
, int status
, Boolean isJobs
)
654 for (job
= job_table
; job
< job_table_end
; job
++) {
655 if ((job
->job_state
== status
) && job
->pid
== pid
)
658 if (DEBUG(JOB
) && isJobs
)
659 job_table_dump("no pid");
664 *-----------------------------------------------------------------------
666 * Put out another command for the given job. If the command starts
667 * with an @ or a - we process it specially. In the former case,
668 * so long as the -s and -n flags weren't given to make, we stick
669 * a shell-specific echoOff command in the script. In the latter,
670 * we ignore errors for the entire job, unless the shell has error
672 * If the command is just "..." we take all future commands for this
673 * job to be commands to be executed once the entire graph has been
674 * made and return non-zero to signal that the end of the commands
675 * was reached. These commands are later attached to the postCommands
676 * node and executed by Job_End when all things are done.
677 * This function is called from JobStart via Lst_ForEach.
680 * cmdp command string to print
681 * jobp job for which to print it
684 * Always 0, unless the command was "..."
687 * If the command begins with a '-' and the shell has no error control,
688 * the JOB_IGNERR flag is set in the job descriptor.
689 * If the command is "..." and we're not ignoring such things,
690 * tailCmds is set to the successor node of the cmd.
691 * numCommands is incremented if the command is actually printed.
692 *-----------------------------------------------------------------------
695 JobPrintCommand(void *cmdp
, void *jobp
)
697 Boolean noSpecials
; /* true if we shouldn't worry about
698 * inserting special commands into
699 * the input stream. */
700 Boolean shutUp
= FALSE
; /* true if we put a no echo command
701 * into the command file */
702 Boolean errOff
= FALSE
; /* true if we turned error checking
703 * off before printing the command
704 * and need to turn it back on */
705 const char *cmdTemplate
; /* Template to use when printing the
707 char *cmdStart
; /* Start of expanded command */
708 char *escCmd
= NULL
; /* Command with quotes/backticks escaped */
709 char *cmd
= (char *)cmdp
;
710 Job
*job
= (Job
*)jobp
;
713 noSpecials
= NoExecute(job
->node
);
715 if (strcmp(cmd
, "...") == 0) {
716 job
->node
->type
|= OP_SAVE_CMDS
;
717 if ((job
->flags
& JOB_IGNDOTS
) == 0) {
718 job
->tailCmds
= Lst_Succ(Lst_Member(job
->node
->commands
,
725 #define DBPRINTF(fmt, arg) if (DEBUG(JOB)) { \
726 (void)fprintf(debug_file, fmt, arg); \
728 (void)fprintf(job->cmdFILE, fmt, arg); \
729 (void)fflush(job->cmdFILE);
733 cmdStart
= cmd
= Var_Subst(NULL
, cmd
, job
->node
, VARF_WANTRES
);
735 cmdTemplate
= "%s\n";
738 * Check for leading @' and -'s to control echoing and error checking.
740 while (*cmd
== '@' || *cmd
== '-' || (*cmd
== '+')) {
743 shutUp
= DEBUG(LOUD
) ? FALSE
: TRUE
;
751 * We're not actually executing anything...
752 * but this one needs to be - use compat mode just for it.
754 CompatRunCommand(cmdp
, job
->node
);
762 while (isspace((unsigned char) *cmd
))
766 * If the shell doesn't have error control the alternate echo'ing will
767 * be done (to avoid showing additional error checking code)
768 * and this will need the characters '$ ` \ "' escaped
771 if (!commandShell
->hasErrCtl
) {
772 /* Worst that could happen is every char needs escaping. */
773 escCmd
= bmake_malloc((strlen(cmd
) * 2) + 1);
774 for (i
= 0, j
= 0; cmd
[i
] != '\0'; i
++, j
++) {
775 if (cmd
[i
] == '$' || cmd
[i
] == '`' || cmd
[i
] == '\\' ||
784 if (!(job
->flags
& JOB_SILENT
) && !noSpecials
&&
785 commandShell
->hasEchoCtl
) {
786 DBPRINTF("%s\n", commandShell
->echoOff
);
788 if (commandShell
->hasErrCtl
)
795 if (commandShell
->hasErrCtl
) {
797 * we don't want the error-control commands showing
798 * up either, so we turn off echoing while executing
799 * them. We could put another field in the shell
800 * structure to tell JobDoOutput to look for this
801 * string too, but why make it any more complex than
804 if (!(job
->flags
& JOB_SILENT
) && !shutUp
&&
805 commandShell
->hasEchoCtl
) {
806 DBPRINTF("%s\n", commandShell
->echoOff
);
807 DBPRINTF("%s\n", commandShell
->ignErr
);
808 DBPRINTF("%s\n", commandShell
->echoOn
);
810 DBPRINTF("%s\n", commandShell
->ignErr
);
812 } else if (commandShell
->ignErr
&&
813 (*commandShell
->ignErr
!= '\0'))
816 * The shell has no error control, so we need to be
817 * weird to get it to ignore any errors from the command.
818 * If echoing is turned on, we turn it off and use the
819 * errCheck template to echo the command. Leave echoing
820 * off so the user doesn't see the weirdness we go through
821 * to ignore errors. Set cmdTemplate to use the weirdness
822 * instead of the simple "%s\n" template.
824 job
->flags
|= JOB_IGNERR
;
825 if (!(job
->flags
& JOB_SILENT
) && !shutUp
) {
826 if (commandShell
->hasEchoCtl
) {
827 DBPRINTF("%s\n", commandShell
->echoOff
);
829 DBPRINTF(commandShell
->errCheck
, escCmd
);
833 DBPRINTF(commandShell
->errCheck
, escCmd
);
836 cmdTemplate
= commandShell
->ignErr
;
838 * The error ignoration (hee hee) is already taken care
839 * of by the ignErr template, so pretend error checking
852 * If errors are being checked and the shell doesn't have error control
853 * but does supply an errOut template, then setup commands to run
857 if (!commandShell
->hasErrCtl
&& commandShell
->errOut
&&
858 (*commandShell
->errOut
!= '\0')) {
859 if (!(job
->flags
& JOB_SILENT
) && !shutUp
) {
860 if (commandShell
->hasEchoCtl
) {
861 DBPRINTF("%s\n", commandShell
->echoOff
);
863 DBPRINTF(commandShell
->errCheck
, escCmd
);
866 /* If it's a comment line or blank, treat as an ignored error */
867 if ((escCmd
[0] == commandShell
->commentChar
) ||
869 cmdTemplate
= commandShell
->ignErr
;
871 cmdTemplate
= commandShell
->errOut
;
876 if (DEBUG(SHELL
) && strcmp(shellName
, "sh") == 0 &&
877 (job
->flags
& JOB_TRACED
) == 0) {
878 DBPRINTF("set -%s\n", "x");
879 job
->flags
|= JOB_TRACED
;
882 DBPRINTF(cmdTemplate
, cmd
);
887 * If echoing is already off, there's no point in issuing the
888 * echoOff command. Otherwise we issue it and pretend it was on
889 * for the whole command...
891 if (!shutUp
&& !(job
->flags
& JOB_SILENT
) && commandShell
->hasEchoCtl
){
892 DBPRINTF("%s\n", commandShell
->echoOff
);
895 DBPRINTF("%s\n", commandShell
->errCheck
);
897 if (shutUp
&& commandShell
->hasEchoCtl
) {
898 DBPRINTF("%s\n", commandShell
->echoOn
);
904 *-----------------------------------------------------------------------
906 * Save a command to be executed when everything else is done.
907 * Callback function for JobFinish...
913 * The command is tacked onto the end of postCommands's commands list.
915 *-----------------------------------------------------------------------
918 JobSaveCommand(void *cmd
, void *gn
)
920 cmd
= Var_Subst(NULL
, (char *)cmd
, (GNode
*)gn
, VARF_WANTRES
);
921 (void)Lst_AtEnd(postCommands
->commands
, cmd
);
927 *-----------------------------------------------------------------------
929 * Called to close both input and output pipes when a job is finished.
935 * The file descriptors associated with the job are closed.
937 *-----------------------------------------------------------------------
943 (void)close(job
->outPipe
);
946 JobDoOutput(job
, TRUE
);
947 (void)close(job
->inPipe
);
952 *-----------------------------------------------------------------------
954 * Do final processing for the given job including updating
955 * parents and starting new jobs as available/necessary. Note
956 * that we pay no attention to the JOB_IGNERR flag here.
957 * This is because when we're called because of a noexecute flag
958 * or something, jstat.w_status is 0 and when called from
959 * Job_CatchChildren, the status is zeroed if it s/b ignored.
963 * status sub-why job went away
969 * Final commands for the job are placed on postCommands.
971 * If we got an error and are aborting (aborting == ABORT_ERROR) and
972 * the job list is now empty, we are done for the day.
973 * If we recognized an error (errors !=0), we set the aborting flag
974 * to ABORT_ERROR so no more jobs will be started.
975 *-----------------------------------------------------------------------
979 JobFinish (Job
*job
, WAIT_T status
)
981 Boolean done
, return_job_token
;
984 fprintf(debug_file
, "Jobfinish: %d [%s], status %d\n",
985 job
->pid
, job
->node
->name
, status
);
988 if ((WIFEXITED(status
) &&
989 (((WEXITSTATUS(status
) != 0) && !(job
->flags
& JOB_IGNERR
)))) ||
993 * If it exited non-zero and either we're doing things our
994 * way or we're not ignoring errors, the job is finished.
995 * Similarly, if the shell died because of a signal
996 * the job is also finished. In these
997 * cases, finish out the job's output before printing the exit
1001 if (job
->cmdFILE
!= NULL
&& job
->cmdFILE
!= stdout
) {
1002 (void)fclose(job
->cmdFILE
);
1003 job
->cmdFILE
= NULL
;
1006 } else if (WIFEXITED(status
)) {
1008 * Deal with ignored errors in -B mode. We need to print a message
1009 * telling of the ignored error as well as setting status.w_status
1010 * to 0 so the next command gets run. To do this, we set done to be
1011 * TRUE if in -B mode and the job exited non-zero.
1013 done
= WEXITSTATUS(status
) != 0;
1015 * Old comment said: "Note we don't
1016 * want to close down any of the streams until we know we're at the
1018 * But we do. Otherwise when are we going to print the rest of the
1024 * No need to close things down or anything.
1030 if (WIFEXITED(status
)) {
1032 (void)fprintf(debug_file
, "Process %d [%s] exited.\n",
1033 job
->pid
, job
->node
->name
);
1035 if (WEXITSTATUS(status
) != 0) {
1036 if (job
->node
!= lastNode
) {
1037 MESSAGE(stdout
, job
->node
);
1038 lastNode
= job
->node
;
1042 meta_job_error(job
, job
->node
, job
->flags
, WEXITSTATUS(status
));
1045 (void)printf("*** [%s] Error code %d%s\n",
1047 WEXITSTATUS(status
),
1048 (job
->flags
& JOB_IGNERR
) ? " (ignored)" : "");
1049 if (job
->flags
& JOB_IGNERR
) {
1050 WAIT_STATUS(status
) = 0;
1052 PrintOnError(job
->node
, NULL
);
1054 } else if (DEBUG(JOB
)) {
1055 if (job
->node
!= lastNode
) {
1056 MESSAGE(stdout
, job
->node
);
1057 lastNode
= job
->node
;
1059 (void)printf("*** [%s] Completed successfully\n",
1063 if (job
->node
!= lastNode
) {
1064 MESSAGE(stdout
, job
->node
);
1065 lastNode
= job
->node
;
1067 (void)printf("*** [%s] Signal %d\n",
1068 job
->node
->name
, WTERMSIG(status
));
1070 (void)fflush(stdout
);
1077 if ((x
= meta_job_finish(job
)) != 0 && status
== 0) {
1083 return_job_token
= FALSE
;
1085 Trace_Log(JOBEND
, job
);
1086 if (!(job
->flags
& JOB_SPECIAL
)) {
1087 if ((WAIT_STATUS(status
) != 0) ||
1088 (aborting
== ABORT_ERROR
) ||
1089 (aborting
== ABORT_INTERRUPT
))
1090 return_job_token
= TRUE
;
1093 if ((aborting
!= ABORT_ERROR
) && (aborting
!= ABORT_INTERRUPT
) &&
1094 (WAIT_STATUS(status
) == 0)) {
1096 * As long as we aren't aborting and the job didn't return a non-zero
1097 * status that we shouldn't ignore, we call Make_Update to update
1098 * the parents. In addition, any saved commands for the node are placed
1099 * on the .END target.
1101 if (job
->tailCmds
!= NULL
) {
1102 Lst_ForEachFrom(job
->node
->commands
, job
->tailCmds
,
1106 job
->node
->made
= MADE
;
1107 if (!(job
->flags
& JOB_SPECIAL
))
1108 return_job_token
= TRUE
;
1109 Make_Update(job
->node
);
1110 job
->job_state
= JOB_ST_FREE
;
1111 } else if (WAIT_STATUS(status
)) {
1113 job
->job_state
= JOB_ST_FREE
;
1117 * Set aborting if any error.
1119 if (errors
&& !keepgoing
&& (aborting
!= ABORT_INTERRUPT
)) {
1121 * If we found any errors in this batch of children and the -k flag
1122 * wasn't given, we set the aborting flag so no more jobs get
1125 aborting
= ABORT_ERROR
;
1128 if (return_job_token
)
1131 if (aborting
== ABORT_ERROR
&& jobTokensRunning
== 0) {
1133 * If we are aborting and the job table is now empty, we finish.
1140 *-----------------------------------------------------------------------
1142 * Touch the given target. Called by JobStart when the -t flag was
1146 * gn the node of the file to touch
1147 * silent TRUE if should not print message
1153 * The data modification of the file is changed. In addition, if the
1154 * file did not exist, it is created.
1155 *-----------------------------------------------------------------------
1158 Job_Touch(GNode
*gn
, Boolean silent
)
1160 int streamID
; /* ID of stream opened to do the touch */
1161 struct utimbuf times
; /* Times for utime() call */
1163 if (gn
->type
& (OP_JOIN
|OP_USE
|OP_USEBEFORE
|OP_EXEC
|OP_OPTIONAL
|
1164 OP_SPECIAL
|OP_PHONY
)) {
1166 * .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual" targets
1167 * and, as such, shouldn't really be created.
1172 if (!silent
|| NoExecute(gn
)) {
1173 (void)fprintf(stdout
, "touch %s\n", gn
->name
);
1174 (void)fflush(stdout
);
1177 if (NoExecute(gn
)) {
1181 if (gn
->type
& OP_ARCHV
) {
1183 } else if (gn
->type
& OP_LIB
) {
1186 char *file
= gn
->path
? gn
->path
: gn
->name
;
1188 times
.actime
= times
.modtime
= now
;
1189 if (utime(file
, ×
) < 0){
1190 streamID
= open(file
, O_RDWR
| O_CREAT
, 0666);
1192 if (streamID
>= 0) {
1196 * Read and write a byte to the file to change the
1197 * modification time, then close the file.
1199 if (read(streamID
, &c
, 1) == 1) {
1200 (void)lseek(streamID
, (off_t
)0, SEEK_SET
);
1201 while (write(streamID
, &c
, 1) == -1 && errno
== EAGAIN
)
1205 (void)close(streamID
);
1207 (void)fprintf(stdout
, "*** couldn't touch %s: %s",
1208 file
, strerror(errno
));
1209 (void)fflush(stdout
);
1216 *-----------------------------------------------------------------------
1217 * Job_CheckCommands --
1218 * Make sure the given node has all the commands it needs.
1221 * gn The target whose commands need verifying
1222 * abortProc Function to abort with message
1225 * TRUE if the commands list is/was ok.
1228 * The node will have commands from the .DEFAULT rule added to it
1230 *-----------------------------------------------------------------------
1233 Job_CheckCommands(GNode
*gn
, void (*abortProc
)(const char *, ...))
1235 if (OP_NOP(gn
->type
) && Lst_IsEmpty(gn
->commands
) &&
1236 ((gn
->type
& OP_LIB
) == 0 || Lst_IsEmpty(gn
->children
))) {
1238 * No commands. Look for .DEFAULT rule from which we might infer
1241 if ((DEFAULT
!= NULL
) && !Lst_IsEmpty(DEFAULT
->commands
) &&
1242 (gn
->type
& OP_SPECIAL
) == 0) {
1245 * Make only looks for a .DEFAULT if the node was never the
1246 * target of an operator, so that's what we do too. If
1247 * a .DEFAULT was given, we substitute its commands for gn's
1248 * commands and set the IMPSRC variable to be the target's name
1249 * The DEFAULT node acts like a transformation rule, in that
1250 * gn also inherits any attributes or sources attached to
1253 Make_HandleUse(DEFAULT
, gn
);
1254 Var_Set(IMPSRC
, Var_Value(TARGET
, gn
, &p1
), gn
, 0);
1256 } else if (Dir_MTime(gn
, 0) == 0 && (gn
->type
& OP_SPECIAL
) == 0) {
1258 * The node wasn't the target of an operator we have no .DEFAULT
1259 * rule to go on and the target doesn't already exist. There's
1260 * nothing more we can do for this branch. If the -k flag wasn't
1261 * given, we stop in our tracks, otherwise we just don't update
1262 * this node's parents so they never get examined.
1264 static const char msg
[] = ": don't know how to make";
1266 if (gn
->flags
& FROM_DEPEND
) {
1267 if (!Job_RunTarget(".STALE", gn
->fname
))
1268 fprintf(stdout
, "%s: %s, %d: ignoring stale %s for %s\n",
1269 progname
, gn
->fname
, gn
->lineno
, makeDependfile
,
1274 if (gn
->type
& OP_OPTIONAL
) {
1275 (void)fprintf(stdout
, "%s%s %s (ignored)\n", progname
,
1277 (void)fflush(stdout
);
1278 } else if (keepgoing
) {
1279 (void)fprintf(stdout
, "%s%s %s (continuing)\n", progname
,
1281 (void)fflush(stdout
);
1284 (*abortProc
)("%s%s %s. Stop", progname
, msg
, gn
->name
);
1293 *-----------------------------------------------------------------------
1295 * Execute the shell for the given job. Called from JobStart
1298 * job Job to execute
1304 * A shell is executed, outputs is altered and the Job structure added
1307 *-----------------------------------------------------------------------
1310 JobExec(Job
*job
, char **argv
)
1312 int cpid
; /* ID of new child */
1315 job
->flags
&= ~JOB_TRACED
;
1320 (void)fprintf(debug_file
, "Running %s %sly\n", job
->node
->name
, "local");
1321 (void)fprintf(debug_file
, "\tCommand: ");
1322 for (i
= 0; argv
[i
] != NULL
; i
++) {
1323 (void)fprintf(debug_file
, "%s ", argv
[i
]);
1325 (void)fprintf(debug_file
, "\n");
1329 * Some jobs produce no output and it's disconcerting to have
1330 * no feedback of their running (since they produce no output, the
1331 * banner with their name in it never appears). This is an attempt to
1332 * provide that feedback, even if nothing follows it.
1334 if ((lastNode
!= job
->node
) && !(job
->flags
& JOB_SILENT
)) {
1335 MESSAGE(stdout
, job
->node
);
1336 lastNode
= job
->node
;
1339 /* No interruptions until this job is on the `jobs' list */
1342 /* Pre-emptively mark job running, pid still zero though */
1343 job
->job_state
= JOB_ST_RUNNING
;
1347 Punt("Cannot vfork: %s", strerror(errno
));
1355 meta_job_child(job
);
1359 * Reset all signal handlers; this is necessary because we also
1360 * need to unblock signals before we exec(2).
1364 /* Now unblock signals */
1365 sigemptyset(&tmask
);
1366 JobSigUnlock(&tmask
);
1369 * Must duplicate the input stream down to the child's input and
1370 * reset it to the beginning (again). Since the stream was marked
1371 * close-on-exec, we must clear that bit in the new input.
1373 if (dup2(FILENO(job
->cmdFILE
), 0) == -1) {
1374 execError("dup2", "job->cmdFILE");
1377 (void)fcntl(0, F_SETFD
, 0);
1378 (void)lseek(0, (off_t
)0, SEEK_SET
);
1380 if (Always_pass_job_queue
||
1381 (job
->node
->type
& (OP_MAKE
| OP_SUBMAKE
))) {
1383 * Pass job token pipe to submakes.
1385 fcntl(tokenWaitJob
.inPipe
, F_SETFD
, 0);
1386 fcntl(tokenWaitJob
.outPipe
, F_SETFD
, 0);
1390 * Set up the child's output to be routed through the pipe
1391 * we've created for it.
1393 if (dup2(job
->outPipe
, 1) == -1) {
1394 execError("dup2", "job->outPipe");
1398 * The output channels are marked close on exec. This bit was
1399 * duplicated by the dup2(on some systems), so we have to clear
1400 * it before routing the shell's error output to the same place as
1401 * its standard output.
1403 (void)fcntl(1, F_SETFD
, 0);
1404 if (dup2(1, 2) == -1) {
1405 execError("dup2", "1, 2");
1410 * We want to switch the child into a different process family so
1411 * we can kill it and all its descendants in one fell swoop,
1412 * by killing its process family, but not commit suicide.
1414 #if defined(HAVE_SETPGID)
1415 (void)setpgid(0, getpid());
1417 #if defined(HAVE_SETSID)
1418 /* XXX: dsl - I'm sure this should be setpgrp()... */
1421 (void)setpgrp(0, getpid());
1427 (void)execv(shellPath
, argv
);
1428 execError("exec", shellPath
);
1432 /* Parent, continuing after the child exec */
1435 Trace_Log(JOBSTART
, job
);
1438 * Set the current position in the buffer to the beginning
1439 * and mark another stream to watch in the outputs mask
1445 if (job
->cmdFILE
!= NULL
&& job
->cmdFILE
!= stdout
) {
1446 (void)fclose(job
->cmdFILE
);
1447 job
->cmdFILE
= NULL
;
1451 * Now the job is actually running, add it to the table.
1454 fprintf(debug_file
, "JobExec(%s): pid %d added to jobs table\n",
1455 job
->node
->name
, job
->pid
);
1456 job_table_dump("job started");
1458 JobSigUnlock(&mask
);
1462 *-----------------------------------------------------------------------
1464 * Create the argv needed to execute the shell for a given job.
1471 *-----------------------------------------------------------------------
1474 JobMakeArgv(Job
*job
, char **argv
)
1477 static char args
[10]; /* For merged arguments */
1479 argv
[0] = UNCONST(shellName
);
1482 if ((commandShell
->exit
&& (*commandShell
->exit
!= '-')) ||
1483 (commandShell
->echo
&& (*commandShell
->echo
!= '-')))
1486 * At least one of the flags doesn't have a minus before it, so
1487 * merge them together. Have to do this because the *(&(@*#*&#$#
1488 * Bourne shell thinks its second argument is a file to source.
1489 * Grrrr. Note the ten-character limitation on the combined arguments.
1491 (void)snprintf(args
, sizeof(args
), "-%s%s",
1492 ((job
->flags
& JOB_IGNERR
) ? "" :
1493 (commandShell
->exit
? commandShell
->exit
: "")),
1494 ((job
->flags
& JOB_SILENT
) ? "" :
1495 (commandShell
->echo
? commandShell
->echo
: "")));
1502 if (!(job
->flags
& JOB_IGNERR
) && commandShell
->exit
) {
1503 argv
[argc
] = UNCONST(commandShell
->exit
);
1506 if (!(job
->flags
& JOB_SILENT
) && commandShell
->echo
) {
1507 argv
[argc
] = UNCONST(commandShell
->echo
);
1515 *-----------------------------------------------------------------------
1517 * Start a target-creation process going for the target described
1518 * by the graph node gn.
1521 * gn target to create
1522 * flags flags for the job to override normal ones.
1523 * e.g. JOB_SPECIAL or JOB_IGNDOTS
1524 * previous The previous Job structure for this node, if any.
1527 * JOB_ERROR if there was an error in the commands, JOB_FINISHED
1528 * if there isn't actually anything left to do for the job and
1529 * JOB_RUNNING if the job has been started.
1532 * A new Job node is created and added to the list of running
1533 * jobs. PMake is forked and a child shell created.
1535 * NB: I'm fairly sure that this code is never called with JOB_SPECIAL set
1536 * JOB_IGNDOTS is never set (dsl)
1537 * Also the return value is ignored by everyone.
1538 *-----------------------------------------------------------------------
1541 JobStart(GNode
*gn
, int flags
)
1543 Job
*job
; /* new job descriptor */
1544 char *argv
[10]; /* Argument vector to shell */
1545 Boolean cmdsOK
; /* true if the nodes commands were all right */
1546 Boolean noExec
; /* Set true if we decide not to run the job */
1547 int tfd
; /* File descriptor to the temp file */
1549 for (job
= job_table
; job
< job_table_end
; job
++) {
1550 if (job
->job_state
== JOB_ST_FREE
)
1553 if (job
>= job_table_end
)
1554 Punt("JobStart no job slots vacant");
1556 memset(job
, 0, sizeof *job
);
1557 job
->job_state
= JOB_ST_SETUP
;
1558 if (gn
->type
& OP_SPECIAL
)
1559 flags
|= JOB_SPECIAL
;
1562 job
->tailCmds
= NULL
;
1565 * Set the initial value of the flags for this job based on the global
1566 * ones and the node's attributes... Any flags supplied by the caller
1567 * are also added to the field.
1570 if (Targ_Ignore(gn
)) {
1571 job
->flags
|= JOB_IGNERR
;
1573 if (Targ_Silent(gn
)) {
1574 job
->flags
|= JOB_SILENT
;
1576 job
->flags
|= flags
;
1579 * Check the commands now so any attributes from .DEFAULT have a chance
1580 * to migrate to the node
1582 cmdsOK
= Job_CheckCommands(gn
, Error
);
1584 job
->inPollfd
= NULL
;
1586 * If the -n flag wasn't given, we open up OUR (not the child's)
1587 * temporary file to stuff commands in it. The thing is rd/wr so we don't
1588 * need to reopen it to feed it to the shell. If the -n flag *was* given,
1589 * we just set the file to be stdout. Cute, huh?
1591 if (((gn
->type
& OP_MAKE
) && !(noRecursiveExecute
)) ||
1592 (!noExecute
&& !touchFlag
)) {
1594 * tfile is the name of a file into which all shell commands are
1595 * put. It is removed before the child shell is executed, unless
1596 * DEBUG(SCRIPT) is set.
1601 * We're serious here, but if the commands were bogus, we're
1605 PrintOnError(gn
, NULL
); /* provide some clue */
1610 tfd
= mkTempFile(TMPPAT
, &tfile
);
1612 (void)eunlink(tfile
);
1613 JobSigUnlock(&mask
);
1615 job
->cmdFILE
= fdopen(tfd
, "w+");
1616 if (job
->cmdFILE
== NULL
) {
1617 Punt("Could not fdopen %s", tfile
);
1619 (void)fcntl(FILENO(job
->cmdFILE
), F_SETFD
, FD_CLOEXEC
);
1621 * Send the commands to the command file, flush all its buffers then
1622 * rewind and remove the thing.
1628 meta_job_start(job
, gn
);
1629 if (Targ_Silent(gn
)) { /* might have changed */
1630 job
->flags
|= JOB_SILENT
;
1635 * We can do all the commands at once. hooray for sanity
1638 Lst_ForEach(gn
->commands
, JobPrintCommand
, job
);
1641 * If we didn't print out any commands to the shell script,
1642 * there's not much point in executing the shell, is there?
1644 if (numCommands
== 0) {
1649 } else if (NoExecute(gn
)) {
1651 * Not executing anything -- just print all the commands to stdout
1652 * in one fell swoop. This will still set up job->tailCmds correctly.
1654 if (lastNode
!= gn
) {
1655 MESSAGE(stdout
, gn
);
1658 job
->cmdFILE
= stdout
;
1660 * Only print the commands if they're ok, but don't die if they're
1661 * not -- just let the user know they're bad and keep going. It
1662 * doesn't do any harm in this case and may do some good.
1665 Lst_ForEach(gn
->commands
, JobPrintCommand
, job
);
1668 * Don't execute the shell, thank you.
1673 * Just touch the target and note that no shell should be executed.
1674 * Set cmdFILE to stdout to make life easier. Check the commands, too,
1675 * but don't die if they're no good -- it does no harm to keep working
1678 job
->cmdFILE
= stdout
;
1679 Job_Touch(gn
, job
->flags
&JOB_SILENT
);
1682 /* Just in case it isn't already... */
1683 (void)fflush(job
->cmdFILE
);
1686 * If we're not supposed to execute a shell, don't.
1689 if (!(job
->flags
& JOB_SPECIAL
))
1692 * Unlink and close the command file if we opened one
1694 if (job
->cmdFILE
!= stdout
) {
1695 if (job
->cmdFILE
!= NULL
) {
1696 (void)fclose(job
->cmdFILE
);
1697 job
->cmdFILE
= NULL
;
1702 * We only want to work our way up the graph if we aren't here because
1703 * the commands for the job were no good.
1705 if (cmdsOK
&& aborting
== 0) {
1706 if (job
->tailCmds
!= NULL
) {
1707 Lst_ForEachFrom(job
->node
->commands
, job
->tailCmds
,
1711 job
->node
->made
= MADE
;
1712 Make_Update(job
->node
);
1714 job
->job_state
= JOB_ST_FREE
;
1715 return cmdsOK
? JOB_FINISHED
: JOB_ERROR
;
1719 * Set up the control arguments to the shell. This is based on the flags
1720 * set earlier for this job.
1722 JobMakeArgv(job
, argv
);
1724 /* Create the pipe by which we'll get the shell's output. */
1725 JobCreatePipe(job
, 3);
1728 return(JOB_RUNNING
);
1732 JobOutput(Job
*job
, char *cp
, char *endp
, int msg
)
1736 if (commandShell
->noPrint
) {
1737 ecp
= Str_FindSubstring(cp
, commandShell
->noPrint
);
1738 while (ecp
!= NULL
) {
1741 if (!beSilent
&& msg
&& job
->node
!= lastNode
) {
1742 MESSAGE(stdout
, job
->node
);
1743 lastNode
= job
->node
;
1746 * The only way there wouldn't be a newline after
1747 * this line is if it were the last in the buffer.
1748 * however, since the non-printable comes after it,
1749 * there must be a newline, so we don't print one.
1751 (void)fprintf(stdout
, "%s", cp
);
1752 (void)fflush(stdout
);
1754 cp
= ecp
+ commandShell
->noPLen
;
1757 * Still more to print, look again after skipping
1758 * the whitespace following the non-printable
1762 while (*cp
== ' ' || *cp
== '\t' || *cp
== '\n') {
1765 ecp
= Str_FindSubstring(cp
, commandShell
->noPrint
);
1775 *-----------------------------------------------------------------------
1777 * This function is called at different times depending on
1778 * whether the user has specified that output is to be collected
1779 * via pipes or temporary files. In the former case, we are called
1780 * whenever there is something to read on the pipe. We collect more
1781 * output from the given job and store it in the job's outBuf. If
1782 * this makes up a line, we print it tagged by the job's identifier,
1784 * If output has been collected in a temporary file, we open the
1785 * file and read it line by line, transfering it to our own
1786 * output channel until the file is empty. At which point we
1787 * remove the temporary file.
1788 * In both cases, however, we keep our figurative eye out for the
1789 * 'noPrint' line for the shell from which the output came. If
1790 * we recognize a line, we don't print it. If the command is not
1791 * alone on the line (the character after it is not \0 or \n), we
1792 * do print whatever follows it.
1795 * job the job whose output needs printing
1796 * finish TRUE if this is the last time we'll be called
1803 * curPos may be shifted as may the contents of outBuf.
1804 *-----------------------------------------------------------------------
1807 JobDoOutput(Job
*job
, Boolean finish
)
1809 Boolean gotNL
= FALSE
; /* true if got a newline */
1810 Boolean fbuf
; /* true if our buffer filled up */
1811 int nr
; /* number of bytes read */
1812 int i
; /* auxiliary index into outBuf */
1813 int max
; /* limit for i (end of current data) */
1814 int nRead
; /* (Temporary) number of bytes read */
1817 * Read as many bytes as will fit in the buffer.
1823 nRead
= read(job
->inPipe
, &job
->outBuf
[job
->curPos
],
1824 JOB_BUFSIZE
- job
->curPos
);
1826 if (errno
== EAGAIN
)
1829 perror("JobDoOutput(piperead)");
1837 * If we hit the end-of-file (the job is dead), we must flush its
1838 * remaining output, so pretend we read a newline if there's any
1839 * output remaining in the buffer.
1840 * Also clear the 'finish' flag so we stop looping.
1842 if ((nr
== 0) && (job
->curPos
!= 0)) {
1843 job
->outBuf
[job
->curPos
] = '\n';
1846 } else if (nr
== 0) {
1851 * Look for the last newline in the bytes we just got. If there is
1852 * one, break out of the loop with 'i' as its index and gotNL set
1855 max
= job
->curPos
+ nr
;
1856 for (i
= job
->curPos
+ nr
- 1; i
>= job
->curPos
; i
--) {
1857 if (job
->outBuf
[i
] == '\n') {
1860 } else if (job
->outBuf
[i
] == '\0') {
1864 job
->outBuf
[i
] = ' ';
1870 if (job
->curPos
== JOB_BUFSIZE
) {
1872 * If we've run out of buffer space, we have no choice
1873 * but to print the stuff. sigh.
1879 if (gotNL
|| fbuf
) {
1881 * Need to send the output to the screen. Null terminate it
1882 * first, overwriting the newline character if there was one.
1883 * So long as the line isn't one we should filter (according
1884 * to the shell description), we print the line, preceded
1885 * by a target banner if this target isn't the same as the
1886 * one for which we last printed something.
1887 * The rest of the data in the buffer are then shifted down
1888 * to the start of the buffer and curPos is set accordingly.
1890 job
->outBuf
[i
] = '\0';
1891 if (i
>= job
->curPos
) {
1894 cp
= JobOutput(job
, job
->outBuf
, &job
->outBuf
[i
], FALSE
);
1897 * There's still more in that thar buffer. This time, though,
1898 * we know there's no newline at the end, so we add one of
1899 * our own free will.
1902 if (!beSilent
&& job
->node
!= lastNode
) {
1903 MESSAGE(stdout
, job
->node
);
1904 lastNode
= job
->node
;
1908 meta_job_output(job
, cp
, gotNL
? "\n" : "");
1911 (void)fprintf(stdout
, "%s%s", cp
, gotNL
? "\n" : "");
1912 (void)fflush(stdout
);
1916 * max is the last offset still in the buffer. Move any remaining
1917 * characters to the start of the buffer and update the end marker
1921 (void)memmove(job
->outBuf
, &job
->outBuf
[i
+ 1], max
- (i
+ 1));
1922 job
->curPos
= max
- (i
+ 1);
1930 * If the finish flag is true, we must loop until we hit
1931 * end-of-file on the pipe. This is guaranteed to happen
1932 * eventually since the other end of the pipe is now closed
1933 * (we closed it explicitly and the child has exited). When
1934 * we do get an EOF, finish will be set FALSE and we'll fall
1946 * Unfortunately it is too complicated to run .BEGIN, .END,
1947 * and .INTERRUPT job in the parallel job module. This has
1948 * the nice side effect that it avoids a lot of other problems.
1950 Lst lst
= Lst_Init(FALSE
);
1951 Lst_AtEnd(lst
, targ
);
1952 (void)Make_Run(lst
);
1953 Lst_Destroy(lst
, NULL
);
1954 JobStart(targ
, JOB_SPECIAL
);
1955 while (jobTokensRunning
) {
1959 Compat_Make(targ
, targ
);
1960 if (targ
->made
== ERROR
) {
1961 PrintOnError(targ
, "\n\nStop.");
1968 *-----------------------------------------------------------------------
1969 * Job_CatchChildren --
1970 * Handle the exit of a child. Called from Make_Make.
1973 * block TRUE if should block on the wait
1979 * The job descriptor is removed from the list of children.
1982 * We do waits, blocking or not, according to the wisdom of our
1983 * caller, until there are no more children to report. For each
1984 * job, call JobFinish to finish things off.
1986 *-----------------------------------------------------------------------
1990 Job_CatchChildren(void)
1992 int pid
; /* pid of dead child */
1993 WAIT_T status
; /* Exit/termination status */
1996 * Don't even bother if we know there's no one around.
1998 if (jobTokensRunning
== 0)
2001 while ((pid
= waitpid((pid_t
) -1, &status
, WNOHANG
| WUNTRACED
)) > 0) {
2003 (void)fprintf(debug_file
, "Process %d exited/stopped status %x.\n", pid
,
2004 WAIT_STATUS(status
));
2006 JobReapChild(pid
, status
, TRUE
);
2011 * It is possible that wait[pid]() was called from elsewhere,
2012 * this lets us reap jobs regardless.
2015 JobReapChild(pid_t pid
, WAIT_T status
, Boolean isJobs
)
2017 Job
*job
; /* job descriptor for dead child */
2020 * Don't even bother if we know there's no one around.
2022 if (jobTokensRunning
== 0)
2025 job
= JobFindPid(pid
, JOB_ST_RUNNING
, isJobs
);
2028 if (!lurking_children
)
2029 Error("Child (%d) status %x not in table?", pid
, status
);
2031 return; /* not ours */
2033 if (WIFSTOPPED(status
)) {
2035 (void)fprintf(debug_file
, "Process %d (%s) stopped.\n",
2036 job
->pid
, job
->node
->name
);
2038 if (!make_suspended
) {
2039 switch (WSTOPSIG(status
)) {
2041 (void)printf("*** [%s] Suspended\n", job
->node
->name
);
2044 (void)printf("*** [%s] Stopped\n", job
->node
->name
);
2047 (void)printf("*** [%s] Stopped -- signal %d\n",
2048 job
->node
->name
, WSTOPSIG(status
));
2050 job
->job_suspended
= 1;
2052 (void)fflush(stdout
);
2056 job
->job_state
= JOB_ST_FINISHED
;
2057 job
->exit_status
= WAIT_STATUS(status
);
2059 JobFinish(job
, status
);
2063 *-----------------------------------------------------------------------
2064 * Job_CatchOutput --
2065 * Catch the output from our children, if we're using
2066 * pipes do so. Otherwise just block time until we get a
2067 * signal(most likely a SIGCHLD) since there's no point in
2068 * just spinning when there's nothing to do and the reaping
2069 * of a child can wait for a while.
2075 * Output is read from pipes if we're piping.
2076 * -----------------------------------------------------------------------
2079 Job_CatchOutput(void)
2085 (void)fflush(stdout
);
2087 /* The first fd in the list is the job token pipe */
2089 nready
= poll(fds
+ 1 - wantToken
, nfds
- 1 + wantToken
, POLL_MSEC
);
2090 } while (nready
< 0 && errno
== EINTR
);
2093 Punt("poll: %s", strerror(errno
));
2095 if (nready
> 0 && readyfd(&childExitJob
)) {
2098 count
= read(childExitJob
.inPipe
, &token
, 1);
2101 Punt("unexpected eof on token pipe");
2103 Punt("token pipe read: %s", strerror(errno
));
2105 if (token
== DO_JOB_RESUME
[0])
2106 /* Complete relay requested from our SIGCONT handler */
2115 Job_CatchChildren();
2119 for (i
= 2; i
< nfds
; i
++) {
2120 if (!fds
[i
].revents
)
2123 if (job
->job_state
== JOB_ST_RUNNING
)
2124 JobDoOutput(job
, FALSE
);
2131 *-----------------------------------------------------------------------
2133 * Start the creation of a target. Basically a front-end for
2134 * JobStart used by the Make module.
2140 * Another job is started.
2142 *-----------------------------------------------------------------------
2147 (void)JobStart(gn
, 0);
2153 if (shellPath
== NULL
) {
2155 * We are using the default shell, which may be an absolute
2156 * path if DEFSHELL_CUSTOM is defined.
2158 shellName
= commandShell
->name
;
2159 #ifdef DEFSHELL_CUSTOM
2160 if (*shellName
== '/') {
2161 shellPath
= shellName
;
2162 shellName
= strrchr(shellPath
, '/');
2166 shellPath
= str_concat(_PATH_DEFSHELLDIR
, shellName
, STR_ADDSLASH
);
2168 if (commandShell
->exit
== NULL
) {
2169 commandShell
->exit
= "";
2171 if (commandShell
->echo
== NULL
) {
2172 commandShell
->echo
= "";
2174 if (commandShell
->hasErrCtl
&& *commandShell
->exit
) {
2176 strcmp(commandShell
->exit
, &shellErrFlag
[1]) != 0) {
2178 shellErrFlag
= NULL
;
2180 if (!shellErrFlag
) {
2181 int n
= strlen(commandShell
->exit
) + 2;
2183 shellErrFlag
= bmake_malloc(n
);
2185 snprintf(shellErrFlag
, n
, "-%s", commandShell
->exit
);
2188 } else if (shellErrFlag
) {
2190 shellErrFlag
= NULL
;
2195 * Returns the string literal that is used in the current command shell
2196 * to produce a newline character.
2199 Shell_GetNewline(void)
2202 return commandShell
->newline
;
2211 } else if (!Var_Exists(MAKE_JOB_PREFIX
, VAR_GLOBAL
)) {
2212 Var_Set(MAKE_JOB_PREFIX
, "---", VAR_GLOBAL
, 0);
2215 targPrefix
= Var_Subst(NULL
, "${" MAKE_JOB_PREFIX
"}",
2216 VAR_GLOBAL
, VARF_WANTRES
);
2220 *-----------------------------------------------------------------------
2222 * Initialize the process module
2230 * lists and counters are initialized
2231 *-----------------------------------------------------------------------
2237 /* Allocate space for all the job info */
2238 job_table
= bmake_malloc(maxJobs
* sizeof *job_table
);
2239 memset(job_table
, 0, maxJobs
* sizeof *job_table
);
2240 job_table_end
= job_table
+ maxJobs
;
2248 Always_pass_job_queue
= getBoolean(MAKE_ALWAYS_PASS_JOB_QUEUE
,
2249 Always_pass_job_queue
);
2251 Job_error_token
= getBoolean(MAKE_JOB_ERROR_TOKEN
, Job_error_token
);
2255 * There is a non-zero chance that we already have children.
2256 * eg after 'make -f- <<EOF'
2257 * Since their termination causes a 'Child (pid) not in table' message,
2258 * Collect the status of any that are already dead, and suppress the
2259 * error message if there are any undead ones.
2263 rval
= waitpid((pid_t
) -1, &status
, WNOHANG
);
2267 lurking_children
= 1;
2273 JobCreatePipe(&childExitJob
, 3);
2275 /* We can only need to wait for tokens, children and output from each job */
2276 fds
= bmake_malloc(sizeof (*fds
) * (2 + maxJobs
));
2277 jobfds
= bmake_malloc(sizeof (*jobfds
) * (2 + maxJobs
));
2279 /* These are permanent entries and take slots 0 and 1 */
2280 watchfd(&tokenWaitJob
);
2281 watchfd(&childExitJob
);
2283 sigemptyset(&caught_signals
);
2285 * Install a SIGCHLD handler.
2287 (void)bmake_signal(SIGCHLD
, JobChildSig
);
2288 sigaddset(&caught_signals
, SIGCHLD
);
2290 #define ADDSIG(s,h) \
2291 if (bmake_signal(s, SIG_IGN) != SIG_IGN) { \
2292 sigaddset(&caught_signals, s); \
2293 (void)bmake_signal(s, h); \
2297 * Catch the four signals that POSIX specifies if they aren't ignored.
2298 * JobPassSig will take care of calling JobInterrupt if appropriate.
2300 ADDSIG(SIGINT
, JobPassSig_int
)
2301 ADDSIG(SIGHUP
, JobPassSig_term
)
2302 ADDSIG(SIGTERM
, JobPassSig_term
)
2303 ADDSIG(SIGQUIT
, JobPassSig_term
)
2306 * There are additional signals that need to be caught and passed if
2307 * either the export system wants to be told directly of signals or if
2308 * we're giving each job its own process group (since then it won't get
2309 * signals from the terminal driver as we own the terminal)
2311 ADDSIG(SIGTSTP
, JobPassSig_suspend
)
2312 ADDSIG(SIGTTOU
, JobPassSig_suspend
)
2313 ADDSIG(SIGTTIN
, JobPassSig_suspend
)
2314 ADDSIG(SIGWINCH
, JobCondPassSig
)
2315 ADDSIG(SIGCONT
, JobContinueSig
)
2318 (void)Job_RunTarget(".BEGIN", NULL
);
2319 postCommands
= Targ_FindNode(".END", TARG_CREATE
);
2322 static void JobSigReset(void)
2325 if (sigismember(&caught_signals, s)) { \
2326 (void)bmake_signal(s, SIG_DFL); \
2339 (void)bmake_signal(SIGCHLD
, SIG_DFL
);
2343 *-----------------------------------------------------------------------
2345 * Find a shell in 'shells' given its name.
2348 * A pointer to the Shell structure.
2353 *-----------------------------------------------------------------------
2356 JobMatchShell(const char *name
)
2360 for (sh
= shells
; sh
->name
!= NULL
; sh
++) {
2361 if (strcmp(name
, sh
->name
) == 0)
2368 *-----------------------------------------------------------------------
2370 * Parse a shell specification and set up commandShell, shellPath
2371 * and shellName appropriately.
2374 * line The shell spec
2377 * FAILURE if the specification was incorrect.
2380 * commandShell points to a Shell structure (either predefined or
2381 * created from the shell spec), shellPath is the full path of the
2382 * shell described by commandShell, while shellName is just the
2383 * final component of shellPath.
2386 * A shell specification consists of a .SHELL target, with dependency
2387 * operator, followed by a series of blank-separated words. Double
2388 * quotes can be used to use blanks in words. A backslash escapes
2389 * anything (most notably a double-quote and a space) and
2390 * provides the functionality it does in C. Each word consists of
2391 * keyword and value separated by an equal sign. There should be no
2392 * unnecessary spaces in the word. The keywords are as follows:
2393 * name Name of shell.
2394 * path Location of shell.
2395 * quiet Command to turn off echoing.
2396 * echo Command to turn echoing on
2397 * filter Result of turning off echoing that shouldn't be
2399 * echoFlag Flag to turn echoing on at the start
2400 * errFlag Flag to turn error checking on at the start
2401 * hasErrCtl True if shell has error checking control
2402 * newline String literal to represent a newline char
2403 * check Command to turn on error checking if hasErrCtl
2404 * is TRUE or template of command to echo a command
2405 * for which error checking is off if hasErrCtl is
2407 * ignore Command to turn off error checking if hasErrCtl
2408 * is TRUE or template of command to execute a
2409 * command so as to ignore any errors it returns if
2410 * hasErrCtl is FALSE.
2412 *-----------------------------------------------------------------------
2415 Job_ParseShell(char *line
)
2422 Boolean fullSpec
= FALSE
;
2425 while (isspace((unsigned char)*line
)) {
2429 free(UNCONST(shellArgv
));
2431 memset(&newShell
, 0, sizeof(newShell
));
2434 * Parse the specification by keyword
2436 words
= brk_string(line
, &argc
, TRUE
, &path
);
2437 if (words
== NULL
) {
2438 Error("Unterminated quoted string [%s]", line
);
2443 for (path
= NULL
, argv
= words
; argc
!= 0; argc
--, argv
++) {
2444 if (strncmp(*argv
, "path=", 5) == 0) {
2446 } else if (strncmp(*argv
, "name=", 5) == 0) {
2447 newShell
.name
= &argv
[0][5];
2449 if (strncmp(*argv
, "quiet=", 6) == 0) {
2450 newShell
.echoOff
= &argv
[0][6];
2451 } else if (strncmp(*argv
, "echo=", 5) == 0) {
2452 newShell
.echoOn
= &argv
[0][5];
2453 } else if (strncmp(*argv
, "filter=", 7) == 0) {
2454 newShell
.noPrint
= &argv
[0][7];
2455 newShell
.noPLen
= strlen(newShell
.noPrint
);
2456 } else if (strncmp(*argv
, "echoFlag=", 9) == 0) {
2457 newShell
.echo
= &argv
[0][9];
2458 } else if (strncmp(*argv
, "errFlag=", 8) == 0) {
2459 newShell
.exit
= &argv
[0][8];
2460 } else if (strncmp(*argv
, "hasErrCtl=", 10) == 0) {
2461 char c
= argv
[0][10];
2462 newShell
.hasErrCtl
= !((c
!= 'Y') && (c
!= 'y') &&
2463 (c
!= 'T') && (c
!= 't'));
2464 } else if (strncmp(*argv
, "newline=", 8) == 0) {
2465 newShell
.newline
= &argv
[0][8];
2466 } else if (strncmp(*argv
, "check=", 6) == 0) {
2467 newShell
.errCheck
= &argv
[0][6];
2468 } else if (strncmp(*argv
, "ignore=", 7) == 0) {
2469 newShell
.ignErr
= &argv
[0][7];
2470 } else if (strncmp(*argv
, "errout=", 7) == 0) {
2471 newShell
.errOut
= &argv
[0][7];
2472 } else if (strncmp(*argv
, "comment=", 8) == 0) {
2473 newShell
.commentChar
= argv
[0][8];
2475 Parse_Error(PARSE_FATAL
, "Unknown keyword \"%s\"",
2486 * If no path was given, the user wants one of the pre-defined shells,
2487 * yes? So we find the one s/he wants with the help of JobMatchShell
2488 * and set things up the right way. shellPath will be set up by
2491 if (newShell
.name
== NULL
) {
2492 Parse_Error(PARSE_FATAL
, "Neither path nor name specified");
2496 if ((sh
= JobMatchShell(newShell
.name
)) == NULL
) {
2497 Parse_Error(PARSE_WARNING
, "%s: No matching shell",
2503 shellName
= newShell
.name
;
2505 /* Shell_Init has already been called! Do it again. */
2506 free(UNCONST(shellPath
));
2513 * The user provided a path. If s/he gave nothing else (fullSpec is
2514 * FALSE), try and find a matching shell in the ones we know of.
2515 * Else we just take the specification at its word and copy it
2516 * to a new location. In either case, we need to record the
2517 * path the user gave for the shell.
2520 path
= strrchr(path
, '/');
2522 path
= UNCONST(shellPath
);
2526 if (newShell
.name
!= NULL
) {
2527 shellName
= newShell
.name
;
2532 if ((sh
= JobMatchShell(shellName
)) == NULL
) {
2533 Parse_Error(PARSE_WARNING
, "%s: No matching shell",
2540 commandShell
= bmake_malloc(sizeof(Shell
));
2541 *commandShell
= newShell
;
2543 /* this will take care of shellErrFlag */
2547 if (commandShell
->echoOn
&& commandShell
->echoOff
) {
2548 commandShell
->hasEchoCtl
= TRUE
;
2551 if (!commandShell
->hasErrCtl
) {
2552 if (commandShell
->errCheck
== NULL
) {
2553 commandShell
->errCheck
= "";
2555 if (commandShell
->ignErr
== NULL
) {
2556 commandShell
->ignErr
= "%s\n";
2561 * Do not free up the words themselves, since they might be in use by the
2562 * shell specification.
2569 *-----------------------------------------------------------------------
2571 * Handle the receipt of an interrupt.
2574 * runINTERRUPT Non-zero if commands for the .INTERRUPT target
2575 * should be executed
2576 * signo signal received
2582 * All children are killed. Another job will be started if the
2583 * .INTERRUPT target was given.
2584 *-----------------------------------------------------------------------
2587 JobInterrupt(int runINTERRUPT
, int signo
)
2589 Job
*job
; /* job descriptor in that element */
2590 GNode
*interrupt
; /* the node describing the .INTERRUPT target */
2594 aborting
= ABORT_INTERRUPT
;
2598 for (job
= job_table
; job
< job_table_end
; job
++) {
2599 if (job
->job_state
!= JOB_ST_RUNNING
)
2604 if ((gn
->type
& (OP_JOIN
|OP_PHONY
)) == 0 && !Targ_Precious(gn
)) {
2605 char *file
= (gn
->path
== NULL
? gn
->name
: gn
->path
);
2606 if (!noExecute
&& eunlink(file
) != -1) {
2607 Error("*** %s removed", file
);
2612 (void)fprintf(debug_file
,
2613 "JobInterrupt passing signal %d to child %d.\n",
2616 KILLPG(job
->pid
, signo
);
2620 JobSigUnlock(&mask
);
2622 if (runINTERRUPT
&& !touchFlag
) {
2623 interrupt
= Targ_FindNode(".INTERRUPT", TARG_NOCREATE
);
2624 if (interrupt
!= NULL
) {
2625 ignoreErrors
= FALSE
;
2629 Trace_Log(MAKEINTR
, 0);
2634 *-----------------------------------------------------------------------
2636 * Do final processing such as the running of the commands
2637 * attached to the .END target.
2640 * Number of errors reported.
2644 *-----------------------------------------------------------------------
2649 if (postCommands
!= NULL
&&
2650 (!Lst_IsEmpty(postCommands
->commands
) ||
2651 !Lst_IsEmpty(postCommands
->children
))) {
2653 Error("Errors reported so .END ignored");
2655 JobRun(postCommands
);
2662 *-----------------------------------------------------------------------
2664 * Cleanup any memory used by the jobs module
2671 *-----------------------------------------------------------------------
2682 *-----------------------------------------------------------------------
2684 * Waits for all running jobs to finish and returns. Sets 'aborting'
2685 * to ABORT_WAIT to prevent other jobs from starting.
2691 * Currently running jobs finish.
2693 *-----------------------------------------------------------------------
2698 aborting
= ABORT_WAIT
;
2699 while (jobTokensRunning
!= 0) {
2706 *-----------------------------------------------------------------------
2708 * Abort all currently running jobs without handling output or anything.
2709 * This function is to be called only in the event of a major
2710 * error. Most definitely NOT to be called from JobInterrupt.
2716 * All children are killed, not just the firstborn
2717 *-----------------------------------------------------------------------
2722 Job
*job
; /* the job descriptor in that element */
2725 aborting
= ABORT_ERROR
;
2727 if (jobTokensRunning
) {
2728 for (job
= job_table
; job
< job_table_end
; job
++) {
2729 if (job
->job_state
!= JOB_ST_RUNNING
)
2732 * kill the child process with increasingly drastic signals to make
2733 * darn sure it's dead.
2735 KILLPG(job
->pid
, SIGINT
);
2736 KILLPG(job
->pid
, SIGKILL
);
2741 * Catch as many children as want to report in at first, then give up
2743 while (waitpid((pid_t
) -1, &foo
, WNOHANG
) > 0)
2749 *-----------------------------------------------------------------------
2751 * Tries to restart stopped jobs if there are slots available.
2752 * Called in process context in response to a SIGCONT.
2760 *-----------------------------------------------------------------------
2763 JobRestartJobs(void)
2767 for (job
= job_table
; job
< job_table_end
; job
++) {
2768 if (job
->job_state
== JOB_ST_RUNNING
&&
2769 (make_suspended
|| job
->job_suspended
)) {
2771 (void)fprintf(debug_file
, "Restarting stopped job pid %d.\n",
2774 if (job
->job_suspended
) {
2775 (void)printf("*** [%s] Continued\n", job
->node
->name
);
2776 (void)fflush(stdout
);
2778 job
->job_suspended
= 0;
2779 if (KILLPG(job
->pid
, SIGCONT
) != 0 && DEBUG(JOB
)) {
2780 fprintf(debug_file
, "Failed to send SIGCONT to %d\n", job
->pid
);
2783 if (job
->job_state
== JOB_ST_FINISHED
)
2784 /* Job exit deferred after calling waitpid() in a signal handler */
2785 JobFinish(job
, job
->exit_status
);
2793 if (job
->inPollfd
!= NULL
)
2794 Punt("Watching watched job");
2796 fds
[nfds
].fd
= job
->inPipe
;
2797 fds
[nfds
].events
= POLLIN
;
2799 job
->inPollfd
= &fds
[nfds
];
2807 if (job
->inPollfd
== NULL
)
2808 Punt("Unwatching unwatched job");
2809 i
= job
->inPollfd
- fds
;
2812 * Move last job in table into hole made by dead job.
2816 jobfds
[i
] = jobfds
[nfds
];
2817 jobfds
[i
]->inPollfd
= &fds
[i
];
2819 job
->inPollfd
= NULL
;
2825 if (job
->inPollfd
== NULL
)
2826 Punt("Polling unwatched job");
2827 return (job
->inPollfd
->revents
& POLLIN
) != 0;
2831 *-----------------------------------------------------------------------
2833 * Put a token into the job pipe so that some make process can start
2837 * Allows more build jobs to be spawned somewhere.
2839 *-----------------------------------------------------------------------
2845 char tok
= JOB_TOKENS
[aborting
], tok1
;
2847 if (!Job_error_token
&& aborting
== ABORT_ERROR
) {
2848 if (jobTokensRunning
== 0)
2850 tok
= '+'; /* no error token */
2853 /* If we are depositing an error token flush everything else */
2854 while (tok
!= '+' && read(tokenWaitJob
.inPipe
, &tok1
, 1) == 1)
2858 fprintf(debug_file
, "(%d) aborting %d, deposit token %c\n",
2859 getpid(), aborting
, tok
);
2860 while (write(tokenWaitJob
.outPipe
, &tok
, 1) == -1 && errno
== EAGAIN
)
2865 *-----------------------------------------------------------------------
2866 * Job_ServerStartTokenAdd --
2867 * Prep the job token pipe in the root make process.
2869 *-----------------------------------------------------------------------
2873 Job_ServerStart(int max_tokens
, int jp_0
, int jp_1
)
2878 if (jp_0
>= 0 && jp_1
>= 0) {
2879 /* Pipe passed in from parent */
2880 tokenWaitJob
.inPipe
= jp_0
;
2881 tokenWaitJob
.outPipe
= jp_1
;
2882 (void)fcntl(jp_0
, F_SETFD
, FD_CLOEXEC
);
2883 (void)fcntl(jp_1
, F_SETFD
, FD_CLOEXEC
);
2887 JobCreatePipe(&tokenWaitJob
, 15);
2889 snprintf(jobarg
, sizeof(jobarg
), "%d,%d",
2890 tokenWaitJob
.inPipe
, tokenWaitJob
.outPipe
);
2892 Var_Append(MAKEFLAGS
, "-J", VAR_GLOBAL
);
2893 Var_Append(MAKEFLAGS
, jobarg
, VAR_GLOBAL
);
2896 * Preload the job pipe with one token per job, save the one
2897 * "extra" token for the primary job.
2899 * XXX should clip maxJobs against PIPE_BUF -- if max_tokens is
2900 * larger than the write buffer size of the pipe, we will
2903 for (i
= 1; i
< max_tokens
; i
++)
2908 *-----------------------------------------------------------------------
2909 * Job_TokenReturn --
2910 * Return a withdrawn token to the pool.
2912 *-----------------------------------------------------------------------
2916 Job_TokenReturn(void)
2919 if (jobTokensRunning
< 0)
2920 Punt("token botch");
2921 if (jobTokensRunning
|| JOB_TOKENS
[aborting
] != '+')
2926 *-----------------------------------------------------------------------
2927 * Job_TokenWithdraw --
2928 * Attempt to withdraw a token from the pool.
2931 * Returns TRUE if a token was withdrawn, and FALSE if the pool
2932 * is currently empty.
2935 * If pool is empty, set wantToken so that we wake up
2936 * when a token is released.
2938 *-----------------------------------------------------------------------
2943 Job_TokenWithdraw(void)
2950 fprintf(debug_file
, "Job_TokenWithdraw(%d): aborting %d, running %d\n",
2951 getpid(), aborting
, jobTokensRunning
);
2953 if (aborting
|| (jobTokensRunning
>= maxJobs
))
2956 count
= read(tokenWaitJob
.inPipe
, &tok
, 1);
2958 Fatal("eof on job pipe!");
2959 if (count
< 0 && jobTokensRunning
!= 0) {
2960 if (errno
!= EAGAIN
) {
2961 Fatal("job pipe read: %s", strerror(errno
));
2964 fprintf(debug_file
, "(%d) blocked for token\n", getpid());
2969 if (count
== 1 && tok
!= '+') {
2970 /* make being abvorted - remove any other job tokens */
2972 fprintf(debug_file
, "(%d) aborted by token %c\n", getpid(), tok
);
2973 while (read(tokenWaitJob
.inPipe
, &tok1
, 1) == 1)
2975 /* And put the stopper back */
2976 while (write(tokenWaitJob
.outPipe
, &tok
, 1) == -1 && errno
== EAGAIN
)
2978 Fatal("A failure has been detected in another branch of the parallel make");
2981 if (count
== 1 && jobTokensRunning
== 0)
2982 /* We didn't want the token really */
2983 while (write(tokenWaitJob
.outPipe
, &tok
, 1) == -1 && errno
== EAGAIN
)
2988 fprintf(debug_file
, "(%d) withdrew token\n", getpid());
2993 *-----------------------------------------------------------------------
2995 * Run the named target if found. If a filename is specified, then
2996 * set that to the sources.
3002 * exits if the target fails.
3004 *-----------------------------------------------------------------------
3007 Job_RunTarget(const char *target
, const char *fname
) {
3008 GNode
*gn
= Targ_FindNode(target
, TARG_NOCREATE
);
3014 Var_Set(ALLSRC
, fname
, gn
, 0);
3017 if (gn
->made
== ERROR
) {
3018 PrintOnError(gn
, "\n\nStop.");
3026 emul_poll(struct pollfd
*fd
, int nfd
, int timeout
)
3029 int i
, maxfd
, nselect
, npoll
;
3030 struct timeval tv
, *tvp
;
3037 for (i
= 0; i
< nfd
; i
++) {
3040 if (fd
[i
].events
& POLLIN
)
3041 FD_SET(fd
[i
].fd
, &rfds
);
3043 if (fd
[i
].events
& POLLOUT
)
3044 FD_SET(fd
[i
].fd
, &wfds
);
3046 if (fd
[i
].fd
> maxfd
)
3050 if (maxfd
>= FD_SETSIZE
) {
3051 Punt("Ran out of fd_set slots; "
3052 "recompile with a larger FD_SETSIZE.");
3058 usecs
= timeout
* 1000;
3059 tv
.tv_sec
= usecs
/ 1000000;
3060 tv
.tv_usec
= usecs
% 1000000;
3064 nselect
= select(maxfd
+ 1, &rfds
, &wfds
, 0, tvp
);
3070 for (i
= 0; i
< nfd
; i
++) {
3071 if (FD_ISSET(fd
[i
].fd
, &rfds
))
3072 fd
[i
].revents
|= POLLIN
;
3074 if (FD_ISSET(fd
[i
].fd
, &wfds
))
3075 fd
[i
].revents
|= POLLOUT
;
3083 #endif /* USE_SELECT */