github.com/Arquivotheca.AIX-4.1.3
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
Files
413
Arquivotheca.AIX-4.1.3/bldenv/make/job.c
seta75D d6fe8fe829 Init
2021-10-11 22:19:34 -03:00

1860 lines
49 KiB
C
Raw Permalink Blame History

/*
* COMPONENT_NAME: BLDPROCESS
*
* FUNCTIONS: JobCmpPid
* JobCondPassSig
* JobExec
* JobFinish
* JobInterrupt
* JobMakeArgv
* JobPassSig
* JobRestart
* JobStart
* Job_AbortAll
* Job_CatchChildren1291
* Job_CheckCommands
* Job_Empty
* Job_End
* Job_Full
* Job_Init
* Job_Make
* Job_Touch
* Job_Wait
* KILL
* WEXITSTATUS
* WIFEXITED
* WIFSIGNALED
* WIFSTOPPED
* WSTOPSIG
* WTERMSIG
* W_EXITCODE
* _WSTATUS
*
* ORIGINS: 27,71
*
* This module contains IBM CONFIDENTIAL code. -- (IBM
* Confidential Restricted when combined with the aggregated
* modules for this product)
* SOURCE MATERIALS
*
* (C) COPYRIGHT International Business Machines Corp. 1994
* All Rights Reserved
* US Government Users Restricted Rights - Use, duplication or
* disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
*/
/*
* @OSF_FREE_COPYRIGHT@
* COPYRIGHT NOTICE
* Copyright (c) 1992, 1991, 1990
* Open Software Foundation, Inc.
*
* Permission is hereby granted to use, copy, modify and freely distribute
* the software in this file and its documentation for any purpose without
* fee, provided that the above copyright notice appears in all copies and
* that both the copyright notice and this permission notice appear in
* supporting documentation. Further, provided that the name of Open
* Software Foundation, Inc. ("OSF") not be used in advertising or
* publicity pertaining to distribution of the software without prior
* written permission from OSF. OSF makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*/
/*
* HISTORY
* $Log: job.c,v $
* Revision 1.2.8.2 1993/04/26 20:27:13 damon
* CR 424. make now handles error returns better
* [1993/04/26 20:26:53 damon]
*
* Revision 1.2.8.1 1993/04/26 20:27:09 damon
* *** Initial Branch Revision ***
*
* Revision 1.2.3.9 1992/12/03 19:05:28 damon
* ODE 2.2 CR 346. Expanded copyright
* [1992/12/03 18:35:17 damon]
*
* Revision 1.2.3.8 1992/11/13 15:19:45 root
* Now includes string.h
* [1992/11/13 14:54:32 root]
*
* Revision 1.2.3.7 1992/11/09 21:50:22 damon
* CR 296. Cleaned up to remove warnings
* [1992/11/09 21:49:09 damon]
*
* Revision 1.2.3.6 1992/09/24 19:24:14 gm
* CR286: Major improvements to make internals.
* [1992/09/24 17:54:21 gm]
*
* Revision 1.2.3.5 1992/06/24 16:31:32 damon
* CR 181. Changed vfork to fork
* [1992/06/24 16:19:26 damon]
*
* Revision 1.2.3.4 1992/06/16 21:24:32 damon
* 2.1.1 touch-up
* [1992/06/16 21:19:12 damon]
*
* Revision 1.2.3.3 1992/06/12 00:49:04 damon
* Synched with 2.1.1
* [1992/06/12 00:35:18 damon]
*
* Revision 1.2.2.3 1992/03/25 22:45:56 damon
* Removed comment after endif
* [1992/03/25 21:49:44 damon]
*
* Revision 1.2.2.2 1992/03/16 14:33:19 mckeen
* Added code to JobStart to prevent abort if keepgoing is defined
* and no rules are found for a target. This fixes the -k switch.
* [1992/03/16 14:30:58 mckeen]
*
* Revision 1.2 1991/12/05 20:42:48 devrcs
* Changes for parallel make.
* [91/04/21 16:37:03 gm]
*
* Added definition of FD_SETSIZE and INC_TYPES
* [91/04/03 12:44:13 damon]
*
* Changes for Reno make
* [91/03/22 16:00:36 mckeen]
*
* $EndLog$
*/
/*
* Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
* Copyright (c) 1988, 1989 by Adam de Boor
* Copyright (c) 1989 by Berkeley Softworks
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Adam de Boor.
*
* Redistribution and use in source and binary forms are permitted provided
* that: (1) source distributions retain this entire copyright notice and
* comment, and (2) distributions including binaries display the following
* acknowledgement: ``This product includes software developed by the
* University of California, Berkeley and its contributors'' in the
* documentation or other materials provided with the distribution and in
* all advertising materials mentioning features or use of this software.
* Neither the name of the University nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef lint
static char sccsid[] = "@(#)40 1.4 src/bldenv/make/job.c, bldprocess, bos412, GOLDA411a 1/19/94 16:27:36";
#endif /* not lint */
#ifndef lint
static char rcsid[] = "@(#)job.c 5.15 (Berkeley) 3/1/91";
#endif /* not lint */
/*-
* job.c --
* handle the creation etc. of our child processes.
*
* Interface:
* Job_Make Start the creation of the given target.
*
* Job_CatchChildren Check for and handle the termination of any
* children. This must be called reasonably
* frequently to keep the whole make going at
* a decent clip, since job table entries aren't
* removed until their process is caught this way.
* Its single argument is TRUE if the function
* should block waiting for a child to terminate.
*
* Job_Init Called to intialize this module. in addition,
* any commands attached to the .BEGIN target
* are executed before this function returns.
* Hence, the makefile must have been parsed
* before this function is called.
*
* Job_Full Return TRUE if the job table is filled.
*
* Job_Empty Return TRUE if the job table is completely
* empty.
*
* Job_End Perform any final processing which needs doing.
* This includes the execution of any commands
* which have been/were attached to the .END
* target. It should only be called when the
* job table is empty.
*
* Job_AbortAll Abort all currently running jobs. It doesn't
* handle output or do anything for the jobs,
* just kills them. It should only be called in
* an emergency, as it were.
*
* Job_CheckCommands Verify that the commands for a target are
* ok. Provide them if necessary and possible.
*
* Job_Touch Update a target without really updating it.
*
* Job_Wait Wait for all currently-running jobs to finish.
*/
#include <sys/types.h>
#include <signal.h>
#include <sys/stat.h>
#include <sys/file.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <utime.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include "make.h"
#include "job.h"
#include "pathnames.h"
#define STATIC /* static debugging support */
extern char **environ;
#ifndef W_EXITCODE
#undef WIFSTOPPED
#undef WIFSIGNALED
#undef WIFEXITED
#define _WSTOPPED 0177
#define _WSTATUS(x) ((x)&_WSTOPPED)
#define WIFSTOPPED(x) (_WSTATUS(x) == _WSTOPPED)
#undef WSTOPSIG
#define WSTOPSIG(x) (((x)>>8)&0177)
#define WIFEXITED(x) (_WSTATUS(x) == 0)
#undef WEXITSTATUS
#define WEXITSTATUS(x) (((x)>>8)&0377)
#define WIFSIGNALED(x) (_WSTATUS(x) != _WSTOPPED && _WSTATUS(x) != 0)
#undef WTERMSIG
#define WTERMSIG(x) (_WSTATUS(x))
#define W_EXITCODE(r,s) ((r)<<8|(s))
#endif
#ifndef WAIT_ANY
#define WAIT_ANY -1
#endif
#ifndef FD_SETSIZE
#define FD_SETSIZE 256
#endif
/*
* error handling variables
*/
int errors = 0; /* number of errors reported */
int aborting = 0; /* why is the make aborting? */
#define ABORT_ERROR 1 /* Because of an error */
#define ABORT_INTERRUPT 2 /* Because it was interrupted */
#define ABORT_WAIT 3 /* Waiting for jobs to finish */
/*
* post-make command processing
*/
STATIC GNode *endNode; /* node containing commands to execute when
* everything else is done w/o errors */
STATIC GNode *intrNode; /* node describing the .INTERRUPT target */
STATIC GNode *errNode; /* node containing commands to execute when
* everything else is done w/ errors */
STATIC GNode *exitNode; /* node containing commands to execute when
* everything else is done always */
/*
* Return values from JobStart.
*/
#define JOB_RUNNING 0 /* Job is running */
#define JOB_ERROR 1 /* Error in starting the job */
#define JOB_FINISHED 2 /* The job is already finished */
#define JOB_STOPPED 3 /* The job is stopped */
STATIC int maxJobs; /* The most children we can run at once */
STATIC int maxLocal; /* The most local ones we can have */
int nJobs; /* The number of children currently running */
int nLocal; /* The number of local children */
Lst jobs; /* The structures that describe them */
Boolean jobFull; /* Flag to tell when the job table is full. It
* is set TRUE when (1) the total number of
* running jobs equals the maximum allowed or
* (2) a job can only be run locally, but
* nLocal equals maxLocal */
/*
* When JobStart attempts to run a job remotely but can't, and isn't allowed
* to run the job locally, or when Job_CatchChildren detects a job that has
* been migrated home, the job is placed on the stoppedJobs queue to be run
* when the next job finishes.
*/
Lst stoppedJobs; /* Lst of Job structures describing
* jobs that were stopped due to concurrency
* limits or migration home */
# if defined(USE_PGRP)
#define KILL(pid,sig) killpg((pid),(sig))
# else
#define KILL(pid,sig) kill((pid),(sig))
# endif
STATIC void JobRestart(Job *);
STATIC int JobStart(GNode *, int, Job *);
STATIC void JobInterrupt(Boolean);
STATIC int JobMakeArgv(Job *, char ***);
STATIC Lst remoteHosts; /* Remote hosts to use */
STATIC char *remoteBase; /* Remote base directory */
STATIC char *remoteUser; /* Remote directory owner */
STATIC char *remoteProg; /* Remote program to execute */
STATIC char *remoteSubdir; /* Subdirectory to run command in */
STATIC char *remoteEnviron; /* File containing remote
environment variables */
STATIC char *remoteLastHost; /* Last host to finish a remote job */
/*-
*-----------------------------------------------------------------------
* JobCondPassSig --
* Pass a signal to a job if the job is remote or if USE_PGRP
* is defined.
*
* Results:
* === 0
*
* Side Effects:
* None, except the job may bite it.
*
*-----------------------------------------------------------------------
*/
STATIC int
JobCondPassSig(
ClientData jobCD, /* Job to biff */
ClientData signo) /* Signal to send it */
{
Job *job = (Job *)jobCD;
if (DEBUG(JOB)) {
printf("JobCondPassSig(job %s, signo %d)\n",
job->node ? job->node->name->data : "NONODE", (int)signo);
}
/*
* Assume that sending the signal to job->pid will signal any remote
* job as well.
*/
KILL(job->pid, (int)signo);
return(0);
}
/*-
*-----------------------------------------------------------------------
* JobPassSig --
* Pass a signal on to all remote jobs and to all local jobs if
* USE_PGRP is defined, then die ourselves.
*
* Results:
* None.
*
* Side Effects:
* We die by the same signal.
*
*-----------------------------------------------------------------------
*/
STATIC void
JobPassSig(int signo) /* The signal number we've received */
{
sigset_t omask, nmask;
if (DEBUG(JOB)) {
printf("JobPassSig(signo %d)\n", signo);
}
Lst_ForEach(jobs, JobCondPassSig, (ClientData)signo);
/*
* Deal with proper cleanup based on the signal received. We only run
* the .INTERRUPT target if the signal was in fact an interrupt. The other
* three termination signals are more of a "get out *now*" command.
*/
if (signo == SIGINT) {
JobInterrupt(TRUE);
} else if ((signo == SIGHUP) || (signo == SIGTERM) || (signo == SIGQUIT)) {
JobInterrupt(FALSE);
}
/*
* Leave gracefully if SIGQUIT, rather than core dumping.
*/
if (signo == SIGQUIT) {
Finish(errors);
}
/*
* Send ourselves the signal now we've given the message to everyone else.
* Note we block everything else possible while we're getting the signal.
* This ensures that all our jobs get continued when we wake up before
* we take any other signal.
*/
sigfillset(&nmask);
sigprocmask(SIG_SETMASK, &nmask, &omask);
signal(signo, SIG_DFL);
sigdelset(&nmask, signo);
sigprocmask(SIG_SETMASK, &nmask, (sigset_t *)NULL);
kill(getpid(), signo);
Lst_ForEach(jobs, JobCondPassSig, (ClientData)SIGCONT);
signal(signo, JobPassSig);
sigprocmask(SIG_SETMASK, &omask, (sigset_t *)NULL);
}
/*-
*-----------------------------------------------------------------------
* JobCmpPid --
* Compare the pid of the job with the given pid and return 0 if they
* are equal. This function is called from Job_CatchChildren via
* Lst_Find to find the job descriptor of the finished job.
*
* Results:
* 0 if the pid's match
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
STATIC int
JobCmpPid (
ClientData jobCD, /* job to examine */
ClientData pid) /* process id desired */
{
Job *job = (Job *)jobCD;
if (DEBUG(JOB)) {
printf("JobCmpPid(job %s, pid %d)\n",
job->node ? job->node->name->data : "NONODE", (int)pid);
}
return (job->pid != (int)pid);
}
/*-
*-----------------------------------------------------------------------
* JobFinish --
* Do final processing for the given job including updating
* parents and starting new jobs as available/necessary. Note
* that we pay no attention to the JOB_IGNERR flag here.
* This is because when we're called because of a noexecute flag
* or something, status is 0 and when called from
* Job_CatchChildren, the status is zeroed if it s/b ignored.
*
* Results:
* None
*
* Side Effects:
* Some nodes may be put on the toBeMade queue.
*
* If we recognized an error (errors !=0), we set the aborting flag
* to ABORT_ERROR so no more jobs will be started.
*-----------------------------------------------------------------------
*/
/*ARGSUSED*/
STATIC void
JobFinish (
Job *job, /* job to finish */
int status) /* sub-why job went away */
{
Boolean done;
if (DEBUG(JOB)) {
printf("JobFinish(job %s, status %x)\n",
job->node ? job->node->name->data : "NONODE", (unsigned)status);
}
if ((WIFEXITED(status) &&
WEXITSTATUS(status) != 0 && !(job->flags & JOB_IGNERR)) ||
(WIFSIGNALED(status) && WTERMSIG(status) != SIGCONT))
{
/*
* If it exited non-zero and either we're doing things our
* way or we're not ignoring errors, the job is finished.
* Similarly, if the shell died because of a signal
* the job is also finished. In these
* cases, finish out the job's output before printing the exit
* status...
*/
fflush(stdout);
done = TRUE;
} else if (WIFEXITED(status) && WEXITSTATUS(status) != 0) {
/*
* Deal with ignored errors in -B mode. We need to print a message
* telling of the ignored error as well as setting status
* to 0 so the next command gets run. To do this, we set done to be
* TRUE if in -B mode and the job exited non-zero. Note we don't
* want to close down any of the streams until we know we're at the
* end.
*/
done = TRUE;
} else {
/*
* No need to close things down or anything.
*/
done = FALSE;
}
if (done ||
WIFSTOPPED(status) ||
(WIFSIGNALED(status) && (WTERMSIG(status) == SIGCONT)) ||
DEBUG(JOB))
{
if (WIFEXITED(status)) {
if (WEXITSTATUS(status) != 0) {
printf ("*** Error code %d%s\n", WEXITSTATUS(status),
(job->flags & JOB_IGNERR) ? " (ignored)" : "");
if (job->flags & JOB_IGNERR) {
status = W_EXITCODE(0, 0);
}
} else if (DEBUG(JOB)) {
printf ("*** Completed successfully\n");
}
} else if (WIFSTOPPED(status)) {
printf ("*** Stopped -- signal %d\n", WSTOPSIG(status));
job->flags |= JOB_RESUME;
(void)Lst_AtEnd(stoppedJobs, (ClientData)job);
fflush(stdout);
return;
} else if (WTERMSIG(status) == SIGCONT) {
/*
* If the beastie has continued, shift the Job from the stopped
* list to the running one (or re-stop it if concurrency is
* exceeded) and go and get another child.
*/
if (job->flags & (JOB_RESUME|JOB_RESTART)) {
printf ("*** Continued\n");
}
if (! (job->flags & JOB_CONTINUING)) {
JobRestart(job);
} else {
Lst_AtEnd(jobs, (ClientData)job);
nJobs += 1;
if (! (job->flags & JOB_REMOTE))
nLocal += 1;
if (nJobs == maxJobs) {
jobFull = TRUE;
if (DEBUG(JOB)) {
printf("Job queue is full.\n");
}
}
}
fflush(stdout);
return;
} else {
printf ("*** Signal %d\n", WTERMSIG(status));
}
fflush (stdout);
}
/*
* Now handle the -B-mode stuff. If the beast still isn't finished,
* try and restart the job on the next command. If JobStart says it's
* ok, it's ok. If there's an error, this puppy is done.
*/
if (status == 0 && !Lst_IsAtEnd (job->node->commands))
{
if (DEBUG(JOB)) {
printf("Starting next command\n");
}
switch (JobStart (job->node, 0, job)) {
case JOB_RUNNING:
done = FALSE;
break;
case JOB_ERROR:
done = TRUE;
status = W_EXITCODE(1, 0);
break;
case JOB_FINISHED:
/*
* If we got back a JOB_FINISHED code, JobStart has already
* called Make_Update and freed the job descriptor. We set
* done to false here to avoid fake cycles and double frees.
* JobStart needs to do the update so we can proceed up the
* graph when given the -n flag..
*/
done = FALSE;
break;
}
} else {
done = TRUE;
}
if (done &&
(aborting != ABORT_ERROR) &&
(aborting != ABORT_INTERRUPT) &&
(status == 0))
{
/*
* As long as we aren't aborting and the job didn't return a non-zero
* status that we shouldn't ignore, we call Make_Update to update
* the parents.
*/
job->node->made = MADE;
Make_Update (job->node);
free((Address)job);
} else if (status) {
job->node->made = aborting ? ABORTED : ERROR;
errors += 1;
free((Address)job);
}
while (!errors && !jobFull && !Lst_IsEmpty(stoppedJobs)) {
JobRestart((Job *)Lst_DeQueue(stoppedJobs));
}
/*
* Set aborting if any error.
*/
if (errors && !keepgoing && (aborting != ABORT_INTERRUPT)) {
/*
* If we found any errors in this batch of children and the -k flag
* wasn't given, we set the aborting flag so no more jobs get
* started.
*/
aborting = ABORT_ERROR;
}
}
/*-
*-----------------------------------------------------------------------
* Job_Touch --
* Touch the given target. Called by JobStart when the -t flag was
* given
*
* Results:
* None
*
* Side Effects:
* The data modification of the file is changed. In addition, if the
* file did not exist, it is created.
*-----------------------------------------------------------------------
*/
void
Job_Touch (
GNode *gn, /* the node of the file to touch */
Boolean silent) /* TRUE if should not print messages */
{
int streamID; /* ID of stream opened to do the touch */
if (DEBUG(JOB)) {
printf("Job_Touch(gn %s, silent %d)\n", gn->name->data, silent);
}
if (gn->type & (OP_JOIN|OP_USE|OP_EXEC|OP_OPTIONAL)) {
/*
* .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual" targets
* and, as such, shouldn't really be created.
*/
return;
}
if (!silent) {
printf ("touch %s\n", gn->name->data);
}
if (noExecute) {
return;
}
if (gn->type & OP_ARCHV) {
Arch_Touch (gn);
} else if (gn->type & OP_LIB) {
Arch_TouchLib (gn);
} else {
struct utimbuf times; /* Times for utime() call */
const char *file = gn->path ? gn->path->data : gn->name->data;
times.actime = times.modtime = now;
if (utime(file, &times) < 0) {
if (errno == ENOENT) {
streamID = open (file, O_RDWR|O_EXCL|O_CREAT, 0666);
if (streamID >= 0)
(void)close (streamID);
else
printf("*** couldn't touch %s: %s", file, strerror(errno));
} else
printf("*** couldn't touch %s: %s", file, strerror(errno));
}
}
}
/*-
*-----------------------------------------------------------------------
* Job_CheckCommands --
* Make sure the given node has all the commands it needs.
*
* Results:
* TRUE if the commands list is/was ok.
*
* Side Effects:
* The node will have commands from the .DEFAULT rule added to it
* if it needs them.
*-----------------------------------------------------------------------
*/
Boolean
Job_CheckCommands (
GNode *gn, /* The target whose commands need verifying */
void (*abortProc)(const char *, ...))
/* Function to abort with msg */
{
if (DEBUG(JOB)) {
printf("Job_CheckCommands(gn %s)\n", gn->name->data);
}
if (OP_NOP(gn->type) && Lst_IsEmpty (gn->commands) &&
(gn->type & OP_LIB) == 0) {
/*
* No commands. Look for .DEFAULT rule from which we might infer
* commands
*/
if ((DEFAULT != NILGNODE) && !Lst_IsEmpty(DEFAULT->commands)) {
/*
* Make only looks for a .DEFAULT if the node was never the
* target of an operator, so that's what we do too. If
* a .DEFAULT was given, we substitute its commands for gn's
* commands and set the IMPSRC variable to be the target's name
* The DEFAULT node acts like a transformation rule, in that
* gn also inherits any attributes or sources attached to
* .DEFAULT itself.
*/
Make_HandleUse(DEFAULT, gn);
Var_Set(sIMPSRC, Var_StrValue(sTARGET, gn), gn);
} else if (Dir_MTime (gn) == 0) {
/*
* The node wasn't the target of an operator we have no .DEFAULT
* rule to go on and the target doesn't already exist. There's
* nothing more we can do for this branch. If the -k flag wasn't
* given, we stop in our tracks, otherwise we just don't update
* this node's parents so they never get examined.
*/
if (gn->type & OP_OPTIONAL) {
printf ("make: don't know how to make %s (ignored)\n",
gn->name->data);
} else if (keepgoing) {
printf ("make: don't know how to make %s (continuing)\n",
gn->name->data);
return (FALSE);
} else {
(*abortProc) ("make: don't know how to make %s. Stop",
gn->name->data);
return(FALSE);
}
}
}
return (TRUE);
}
/*-
*-----------------------------------------------------------------------
* JobExec --
* Execute the shell for the given job. Called from JobStart and
* JobRestart.
*
* Results:
* None.
*
* Side Effects:
* A shell is executed, outputs is altered and the Job structure added
* to the job table.
*
*-----------------------------------------------------------------------
*/
STATIC void
JobExec(Job *job) /* Job to execute */
{
int cpid; /* ID of new child */
char **argv;
char *emsg;
if (DEBUG(JOB)) {
printf("JobExec(job %s)\n",
job->node ? job->node->name->data : "NONODE");
printf("Running %s %sly\n", job->node->name->data,
job->flags&JOB_REMOTE?"remote":"local");
}
if (!JobMakeArgv(job, &argv)) {
JobFinish(job, 0);
return;
}
if (DEBUG(JOB)) {
int i;
printf("\tCommand:");
for (i = 1; argv[i] != (char *)NULL; i++) {
printf(" %s", argv[i]);
}
printf("\n");
}
if (job->flags & JOB_REMOTE) {
if (remoteLastHost != NULL) {
job->rmtData = (void *)remoteLastHost;
remoteLastHost = NULL;
} else {
LstNode ln;
while ((ln = Lst_Next(remoteHosts)) == NILLNODE)
Lst_Open(remoteHosts);
job->rmtData = (void *)Lst_Datum(ln);
}
if (DEBUG(JOB)) {
printf("Starting job on remote host '%s'\n", (char *)job->rmtData);
}
}
if ((cpid = fork()) == -1) {
Punt ("Cannot fork");
} else if (cpid == 0) {
if (job->flags & JOB_REMOTE) {
setenv("AUTHCOVER_HOST", (char *)job->rmtData, TRUE);
setenv("AUTHCOVER_TESTDIR", remoteBase, TRUE);
setenv("AUTHCOVER_USER", remoteUser, TRUE);
}
(void) execvp (argv[0], &argv[1]);
emsg = strerror (errno);
(void) write (2, "make: ", 6);
(void) write (2, argv[0], strlen(argv[0]));
(void) write (2, ": ", 2);
(void) write (2, emsg, strlen(emsg));
(void) write (2, "\n", 1);
_exit (1);
}
job->pid = cpid;
if (DEBUG(JOB)) {
printf("JobExec: job %s, pid %d\n",
job->node ? job->node->name->data : "NONODE", cpid);
}
/*
* Now the job is actually running, add it to the table.
*/
nJobs += 1;
if (! (job->flags & JOB_REMOTE))
nLocal += 1;
(void)Lst_AtEnd (jobs, (ClientData)job);
if (nJobs == maxJobs)
jobFull = TRUE;
if (job->node->type & OP_MAKE) {
while (nJobs)
Job_CatchChildren();
}
}
/*-
*-----------------------------------------------------------------------
* JobMakeArgv --
* Create the argv needed to execute the shell for a given job.
*
*
* Results:
*
* Side Effects:
*
*-----------------------------------------------------------------------
*/
STATIC int
JobMakeArgv(Job *job, char ***argvp)
{
const char **argv;
const char *cmd;
LstNode cmdNode;
Boolean silent, /* Don't print command */
errCheck; /* Check errors */
string_t scmd;
int argmax;
int argc;
if (DEBUG(JOB)) {
printf("JobMakeArgv(job %s)\n",
job->node ? job->node->name->data : "NONODE");
}
if (job->flags & JOB_FIRST)
Lst_Open(job->node->commands);
cmdNode = Lst_Next(job->node->commands);
if (cmdNode == NILLNODE) {
Lst_Close(job->node->commands);
return(FALSE);
}
scmd = (string_t)Lst_Datum(cmdNode);
if (string_hasvar(scmd))
cmd = Var_Subst(scmd->data, job->node, FALSE);
else
cmd = scmd->data;
if (*cmd == 0)
return(FALSE);
while (*cmd == '@' || *cmd == '-') {
if (*cmd == '@')
job->flags |= JOB_SILENT;
else
job->flags |= JOB_IGNERR;
cmd++;
}
while (*cmd == ' ' || *cmd == '\t')
cmd++;
if (*cmd == 0)
return(FALSE);
silent = (job->flags & JOB_SILENT);
errCheck = !(job->flags & JOB_IGNERR);
/*
* Print the command before echoing if we're not supposed to be quiet for
* this one. We also print the command if -n given.
*/
if (!silent || noExecute) {
printf ("%s\n", cmd);
fflush(stdout);
}
/*
* If we're not supposed to execute any commands, this is as far as
* we go...
*/
if (noExecute)
return(FALSE);
argmax = 32;
argv = (const char **)emalloc(argmax * sizeof(char *));
argc = 1;
if (job->flags & JOB_REMOTE) {
argv[0] = remoteProg;
argv[argc++] = "rmt-make";
argv[argc++] = "-t1";
argv[argc++] = "2";
argv[argc++] = "exec";
argv[argc++] = remoteSubdir;
argv[argc++] = remoteEnviron;
}
if (Var_HasMeta(cmd)) {
/*
* The command contains a shell "meta" character and we therefore
* need to pass the command off to the shell. We give the shell the
* -e flag as well as -c if it's supposed to exit when it hits an
* error.
*/
if (argc == 1) {
argv[0] = "/usr/bin/sh";
argv[argc++] = "sh";
} else
argv[argc++] = "/usr/bin/sh";
argv[argc++] = (errCheck ? "-ec" : "-c");
argv[argc++] = cmd;
} else {
/*
* No meta-characters, so no need to exec a shell. Break the command
* into words to form an argument vector we can execute.
*/
char *buf;
register int ch;
register char inquote, *start, *t;
const char *p;
Boolean done;
/* allocate room for a copy of the string */
buf = strdup(cmd);
/*
* copy the string; at the same time, parse backslashes,
* quotes and build the argument list.
*/
inquote = 0;
done = FALSE;
for (p = cmd, start = t = buf; !done; ++p) {
switch(ch = *p) {
case '"':
case '\'':
if (inquote)
if (inquote == ch)
inquote = 0;
else
break;
else
inquote = ch;
continue;
case ' ':
case '\t':
if (inquote)
break;
if (!start)
continue;
/* FALLTHROUGH */
case '\n':
case '\0':
/*
* end of a token -- make sure there's enough argv
* space and save off a pointer.
*/
*t++ = '\0';
if (argc == argmax) {
argmax <<= 1; /* ramp up fast */
argv = (const char **)realloc(argv,
argmax * sizeof(char *));
if (argv == 0)
enomem();
}
argv[argc++] = start;
start = (char *)NULL;
if (ch == '\n' || ch == '\0')
done = TRUE;
continue;
case '\\':
switch (ch = *++p) {
case '\0':
case '\n':
/* hmmm; fix it up as best we can */
ch = '\\';
--p;
break;
}
break;
}
if (!start)
start = t;
*t++ = ch;
}
if (!(job->flags & JOB_REMOTE))
argv[0] = argv[1];
}
argv[argc] = (const char *)NULL;
*argvp = (char **)argv;
return(TRUE);
}
/*-
*-----------------------------------------------------------------------
* JobRestart --
* Restart a job that stopped for some reason.
*
* Results:
* None.
*
* Side Effects:
* jobFull will be set if the job couldn't be run.
*
*-----------------------------------------------------------------------
*/
STATIC void
JobRestart(Job *job) /* Job to restart */
{
Boolean error;
int status;
if (DEBUG(JOB)) {
printf("JobRestart(job %s)\n",
job->node ? job->node->name->data : "NONODE");
}
if (job->flags & JOB_RESTART) {
if (DEBUG(JOB)) {
printf("Restarting %s...", job->node->name->data);
}
if (((nLocal >= maxLocal) && ! (job->flags & JOB_SPECIAL))) {
if (nJobs >= maxJobs) {
/*
* Can't be exported and not allowed to run locally -- put it
* back on the hold queue and mark the table full
*/
if (DEBUG(JOB)) {
printf("holding\n");
}
(void)Lst_AtFront(stoppedJobs, (ClientData)job);
jobFull = TRUE;
if (DEBUG(JOB)) {
printf("Job queue is full.\n");
}
return;
}
/*
* Job may be run remotely.
*/
if (DEBUG(JOB)) {
printf("running remotely\n");
}
job->flags |= JOB_REMOTE;
} else {
/*
* Job may be run locally.
*/
if (DEBUG(JOB)) {
printf("running locally\n");
}
job->flags &= ~JOB_REMOTE;
}
JobExec(job);
return;
}
/*
* The job has stopped and needs to be restarted. Why it stopped,
* we don't know...
*/
if (DEBUG(JOB)) {
printf("Resuming %s...", job->node->name->data);
}
if (nJobs >= maxJobs ||
((job->flags & JOB_REMOTE) == 0 &&
nLocal >= maxLocal &&
((job->flags & JOB_SPECIAL) == 0 || maxLocal != 0)))
{
/*
* Job cannot be restarted. Mark the table as full and
* place the job back on the list of stopped jobs.
*/
if (DEBUG(JOB)) {
printf("table full\n");
}
(void)Lst_AtFront(stoppedJobs, (ClientData)job);
jobFull = TRUE;
if (DEBUG(JOB)) {
printf("Job queue is full.\n");
}
return;
}
/*
* If the job is remote, it's ok to resume it as long as the
* maximum concurrency won't be exceeded. If it's local and
* we haven't reached the local concurrency limit already (or the
* job must be run locally and maxLocal is 0), it's also ok to
* resume it.
*/
error = (KILL(job->pid, SIGCONT) != 0);
if (error) {
Error("couldn't resume %s: %s",
job->node->name, strerror(errno));
status = W_EXITCODE(1, 0);
JobFinish(job, status);
}
/*
* Make sure the user knows we've continued the beast and
* actually put the thing in the job table.
*/
job->flags |= JOB_CONTINUING;
status = W_EXITCODE(0, SIGCONT);
JobFinish(job, status);
job->flags &= ~(JOB_RESUME|JOB_CONTINUING);
if (DEBUG(JOB)) {
printf("done\n");
}
}
/*-
*-----------------------------------------------------------------------
* JobStart --
* Start a target-creation process going for the target described
* by the graph node gn.
*
* Results:
* JOB_ERROR if there was an error in the commands, JOB_FINISHED
* if there isn't actually anything left to do for the job and
* JOB_RUNNING if the job has been started.
*
* Side Effects:
* A new Job node is created and added to the list of running
* jobs. PMake is forked and a child shell created.
*-----------------------------------------------------------------------
*/
STATIC int
JobStart (
GNode *gn, /* target to create */
int flags, /* flags for the job to override normal ones.
* e.g. JOB_SPECIAL */
Job *previous) /* The previous Job structure for this node,
* if any. */
{
register Job *job; /* new job descriptor */
Boolean cmdsOK; /* true if the nodes commands were all right */
Boolean noExec; /* Set true if we decide not to run the job */
if (DEBUG(JOB)) {
printf("JobStart(gn %s, flags %x, previous %s)\n",
gn->name->data, (unsigned)flags,
previous ? previous->node->name->data : "no previous");
}
if (previous != (Job *)NULL) {
previous->flags &= ~ (JOB_FIRST|JOB_IGNERR|JOB_SILENT|JOB_REMOTE);
job = previous;
} else {
job = (Job *) emalloc (sizeof (Job));
if (job == (Job *)NULL) {
Punt("JobStart out of memory");
}
flags |= JOB_FIRST;
}
job->node = gn;
job->rmtData = NULL;
/*
* Set the initial value of the flags for this job based on the global
* ones and the node's attributes... Any flags supplied by the caller
* are also added to the field.
*/
job->flags = 0;
if (Targ_Ignore (gn)) {
job->flags |= JOB_IGNERR;
}
if (Targ_Silent (gn)) {
job->flags |= JOB_SILENT;
}
job->flags |= flags;
/*
* Check the commands now so any attributes from .DEFAULT have a chance
* to migrate to the node
*/
if (job->flags & JOB_FIRST) {
cmdsOK = Job_CheckCommands(gn, Error);
} else {
cmdsOK = TRUE;
}
if (!cmdsOK && keepgoing) {
free((Address)job);
return(JOB_ERROR);
}
if (touchFlag && (gn->type & OP_MAKE) == 0) {
/*
* Just touch the target and note that no shell should be executed.
* Check the commands, too, but don't die if they're no good -- it
* does no harm to keep working up the graph.
*/
Job_Touch (gn, job->flags&JOB_SILENT);
noExec = TRUE;
} else {
/*
* We're serious here, but if the commands were bogus, we're
* also dead...
*/
if (!cmdsOK && !noExecute) {
DieHorribly();
}
noExec = FALSE;
}
/*
* If we're not supposed to execute a shell, don't.
*/
if (noExec) {
/*
* Unlink and close the command file if we opened one
*/
fflush (stdout);
/*
* We only want to work our way up the graph if we aren't here because
* the commands for the job were no good.
*/
if (cmdsOK) {
if (aborting == 0)
Make_Update(job->node);
free((Address)job);
return(JOB_FINISHED);
} else {
free((Address)job);
return(JOB_ERROR);
}
}
/*
* If we're using pipes to catch output, create the pipe by which we'll
* get the shell's output. If we're using files, print out that we're
* starting a job and then set up its temporary-file name. This is just
* tfile with two extra digits tacked on -- jobno.
*/
if (job->flags & JOB_FIRST) {
if (noisy)
printf ("Building `%s'\n", gn->name->data);
fflush (stdout);
}
if (nJobs >= maxJobs && (!(job->flags & JOB_SPECIAL) || maxLocal != 0))
{
/*
* The job can only be run locally, but we've hit the limit of
* local concurrency, so put the job on hold until some other job
* finishes. Note that the special jobs (.BEGIN, .INTERRUPT and .END)
* may be run locally even when the local limit has been reached
* (e.g. when maxLocal == 0), though they will be exported if at
* all possible.
*/
jobFull = TRUE;
if (DEBUG(JOB)) {
printf("Can only run job locally.\n");
}
job->flags |= JOB_RESTART;
(void)Lst_AtEnd(stoppedJobs, (ClientData)job);
return(JOB_RUNNING);
}
if (nJobs >= maxJobs) {
/*
* If we're running this job locally as a special case (see above),
* at least say the table is full.
*/
jobFull = TRUE;
if (DEBUG(JOB)) {
printf("Local job queue is full.\n");
}
}
if (job->node->type & OP_MAKE) {
job->flags |= JOB_SPECIAL;
while (nJobs)
Job_CatchChildren();
} else if (nJobs < maxJobs && nLocal >= maxLocal)
job->flags |= JOB_REMOTE;
JobExec(job);
return(JOB_RUNNING);
}
/*-
*-----------------------------------------------------------------------
* Job_CatchChildren --
* Handle the exit of a child. Called from Make_Make.
*
* Results:
* none.
*
* Side Effects:
* The job descriptor is removed from the list of children.
*
* Notes:
* We do waits, blocking or not, according to the wisdom of our
* caller, until there are no more children to report. For each
* job, call JobFinish to finish things off. This will take care of
* putting jobs on the stoppedJobs queue.
*
*-----------------------------------------------------------------------
*/
void
Job_CatchChildren (void)
{
int pid; /* pid of dead child */
register Job *job; /* job descriptor for dead child */
LstNode jnode; /* list element for finding job */
int status; /* Exit/termination status */
if (DEBUG(JOB)) {
printf("Job_CatchChildren() nLocal %d nJobs %d\n", nLocal, nJobs);
}
errno = 0;
while ((pid = waitpid(WAIT_ANY, &status, WUNTRACED)) > 0)
{
if (DEBUG(JOB))
printf("Process %d exited or stopped.\n", pid);
jnode = Lst_Find (jobs, (ClientData)pid, JobCmpPid);
if (jnode == NILLNODE) {
if (WIFSIGNALED(status) && (WTERMSIG(status) == SIGCONT)) {
jnode = Lst_Find(stoppedJobs, (ClientData)pid, JobCmpPid);
if (jnode == NILLNODE) {
Error("Resumed child (%d) not in table", pid);
errno = 0;
continue;
}
job = (Job *)Lst_Datum(jnode);
Lst_Remove(stoppedJobs, jnode);
} else {
Error ("Child (%d) not in table?", pid);
errno = 0;
continue;
}
} else {
job = (Job *) Lst_Datum (jnode);
Lst_Remove (jobs, jnode);
remoteLastHost = (char *)job->rmtData;
nJobs -= 1;
if (! (job->flags & JOB_REMOTE))
nLocal -= 1;
if (jobFull && DEBUG(JOB)) {
printf("Job queue is no longer full.\n");
}
jobFull = FALSE;
}
JobFinish (job, status);
errno = 0;
}
if (DEBUG(JOB)) {
printf("Job_CatchChildren: pid %d, errno %d\n", pid, errno);
}
}
/*-
*-----------------------------------------------------------------------
* Job_Make --
* Start the creation of a target. Basically a front-end for
* JobStart used by the Make module.
*
* Results:
* TRUE if we could start a job, FALSE is we are not longer
* running jobs.
*
* Side Effects:
* Another job is started.
*
*-----------------------------------------------------------------------
*/
Boolean
Job_Make (GNode *gn)
{
int status;
if (DEBUG(JOB)) {
printf("Job_Make(gn %s)\n", gn->name->data);
}
status = JobStart (gn, 0, (Job *)NULL);
if (DEBUG(JOB)) {
printf("Job_Make: JobStart returned %d\n", status);
}
return(status != JOB_ERROR && !aborting);
}
/*-
*-----------------------------------------------------------------------
* Job_Init --
* Initialize the process module
*
* Results:
* none
*
* Side Effects:
* lists and counters are initialized
*-----------------------------------------------------------------------
*/
void
Job_Init (
int maxproc, /* the greatest number of jobs which may be
* running at one time */
int maxlocal) /* the greatest number of local jobs which may
* be running at once. */
{
if (DEBUG(JOB)) {
printf("Job_Init(maxproc %d, maxlocal %d)\n", maxproc, maxlocal);
}
jobs = Lst_Init();
stoppedJobs = Lst_Init();
maxJobs = maxproc;
maxLocal = maxlocal;
nJobs = 0;
nLocal = 0;
jobFull = FALSE;
aborting = 0;
errors = 0;
/*
* Catch the four signals that POSIX specifies if they aren't ignored.
* JobPassSig will take care of calling JobInterrupt if appropriate.
*/
if (signal (SIGINT, SIG_IGN) != SIG_IGN) {
signal (SIGINT, JobPassSig);
}
if (signal (SIGHUP, SIG_IGN) != SIG_IGN) {
signal (SIGHUP, JobPassSig);
}
if (signal (SIGQUIT, SIG_IGN) != SIG_IGN) {
signal (SIGQUIT, JobPassSig);
}
if (signal (SIGTERM, SIG_IGN) != SIG_IGN) {
signal (SIGTERM, JobPassSig);
}
/*
* There are additional signals that need to be caught and passed if
* either the export system wants to be told directly of signals or if
* we're giving each job its own process group (since then it won't get
* signals from the terminal driver as we own the terminal)
*/
#if defined(USE_PGRP)
if (signal (SIGTSTP, SIG_IGN) != SIG_IGN) {
signal (SIGTSTP, JobPassSig);
}
if (signal (SIGTTOU, SIG_IGN) != SIG_IGN) {
signal (SIGTTOU, JobPassSig);
}
if (signal (SIGTTIN, SIG_IGN) != SIG_IGN) {
signal (SIGTTIN, JobPassSig);
}
if (signal (SIGWINCH, SIG_IGN) != SIG_IGN) {
signal (SIGWINCH, JobPassSig);
}
#endif
{
GNode *begin = Targ_FindNode (s_BEGIN, TARG_NOCREATE);
if (begin != NILGNODE) {
Suff_FindDeps (begin);
JobStart (begin, JOB_SPECIAL, (Job *)0);
while (nJobs) {
Job_CatchChildren ();
}
}
}
endNode = Targ_FindNode (s_END, TARG_NOCREATE);
if (endNode != NILGNODE)
Suff_FindDeps (endNode);
intrNode = Targ_FindNode (s_INTERRUPT, TARG_NOCREATE);
if (intrNode != NILGNODE)
Suff_FindDeps (intrNode);
errNode = Targ_FindNode (s_ERROR, TARG_NOCREATE);
if (errNode != NILGNODE)
Suff_FindDeps (errNode);
exitNode = Targ_FindNode (s_EXIT, TARG_NOCREATE);
if (exitNode != NILGNODE)
Suff_FindDeps (exitNode);
/*
* See if we have remote setup to perform
*/
if (maxJobs == maxLocal)
return;
{
char *q;
char *p = getenv("MAKERMTHOSTS");
if (p == NULL)
Fatal("make: no MAKERMTHOSTS defined\n");
remoteHosts = Lst_Init();
p = strdup(p);
for (;;) {
q = strchr(p, ':');
if (q == NULL) {
if (*p)
Lst_AtEnd(remoteHosts, (ClientData)p);
break;
}
*q++ = '\0';
if (*p)
Lst_AtEnd(remoteHosts, (ClientData)p);
p = q;
}
Lst_Open(remoteHosts);
}
remoteBase = getenv("MAKERMTBASE");
if (remoteBase == NULL)
Fatal("make: no MAKERMTBASE defined\n");
remoteUser = getenv("MAKERMTUSER");
if (remoteUser == NULL)
Fatal("make: no MAKERMTUSER defined\n");
remoteProg = getenv("MAKERMTPROG");
if (remoteProg == NULL)
Fatal("make: no MAKERMTPROG defined\n");
if (DEBUG(JOB)) {
printf("MAKERMTPROG: %s\n", remoteProg);
}
{
string_t str = Var_StrValue(sMAKESUB, VAR_GLOBAL);
if (str == sNULL)
str = sDOT;
else
str = string_head(str);
string_ref(str);
remoteSubdir = (char *)str->data;
if (DEBUG(JOB)) {
printf("MAKERMTDIR: %s\n", remoteSubdir);
}
}
{
FILE *fp;
char *p;
remoteEnviron = (char *)tempnam(NULL, "makeenv");
fp = fopen(remoteEnviron, "w");
p = getenv("MAKERMTENV");
if (p == NULL) {
char **pp;
for (pp = environ; *pp != NULL; pp++)
fprintf(fp, "%s\n", *pp);
} else {
char *cp, *q, *v;
cp = p = strdup(p);
for (;;) {
q = strchr(p, ':');
if (q == NULL) {
if (*p && (v = getenv(p)) != NULL)
fprintf(fp, "%s=%s\n", p, v);
break;
}
*q++ = '\0';
if (*p && (v = getenv(p)) != NULL)
fprintf(fp, "%s=%s\n", p, v);
p = q;
}
free(cp);
}
fclose(fp);
}
}
/*-
*-----------------------------------------------------------------------
* Job_Full --
* See if the job table is full. It is considered full if it is OR
* if we are in the process of aborting OR if we have
* reached/exceeded our local quota. This prevents any more jobs
* from starting up.
*
* Results:
* TRUE if the job table is full, FALSE otherwise
* Side Effects:
* None.
*-----------------------------------------------------------------------
*/
Boolean
Job_Full (void)
{
if (DEBUG(JOB)) {
printf("Job_Full() aborting %d jobFull %d\n", aborting, jobFull);
}
return (aborting || jobFull);
}
/*-
*-----------------------------------------------------------------------
* Job_Empty --
* See if the job table is empty. Because the local concurrency may
* be set to 0, it is possible for the job table to become empty,
* while the list of stoppedJobs remains non-empty. In such a case,
* we want to restart as many jobs as we can.
*
* Results:
* TRUE if it is. FALSE if it ain't.
*
* Side Effects:
* None.
*
* -----------------------------------------------------------------------
*/
Boolean
Job_Empty (void)
{
if (DEBUG(JOB)) {
printf("Job_Empty() nJobs %d aborting %d\n", nJobs, aborting);
}
if (nJobs == 0) {
if (!Lst_IsEmpty(stoppedJobs) && !aborting) {
/*
* The job table is obviously not full if it has no jobs in
* it...Try and restart the stopped jobs.
*/
jobFull = FALSE;
while (!jobFull && !Lst_IsEmpty(stoppedJobs)) {
JobRestart((Job *)Lst_DeQueue(stoppedJobs));
}
return(FALSE);
} else {
return(TRUE);
}
} else {
return(FALSE);
}
}
/*-
*-----------------------------------------------------------------------
* JobInterrupt --
* Handle the receipt of an interrupt.
*
* Results:
* None
*
* Side Effects:
* All children are killed. Another job will be started if the
* .INTERRUPT target was given.
*-----------------------------------------------------------------------
*/
STATIC void
JobInterrupt (int runINTERRUPT) /* Non-zero if commands for the .INTERRUPT
* target should be executed */
{
LstNode ln; /* element in job table */
Job *job; /* job descriptor in that element */
if (DEBUG(JOB)) {
printf("JobInterrupt(runINTERRUPT %d)\n", runINTERRUPT);
}
aborting = ABORT_INTERRUPT;
Lst_Open (jobs);
while ((ln = Lst_Next (jobs)) != NILLNODE) {
job = (Job *) Lst_Datum (ln);
if (!Targ_Precious (job->node)) {
struct stat st;
const char *file = (job->node->path == (string_t)NULL ?
job->node->name->data :
job->node->path->data);
/* unlink any target that is not a directory */
if ((lstat(file, &st) == 0) && ((st.st_mode&S_IFMT) != S_IFDIR)
&& (unlink (file) == 0)) {
Error ("*** %s removed", file);
}
}
if (job->pid) {
KILL(job->pid, SIGINT);
}
}
Lst_Close (jobs);
if (runINTERRUPT && !touchFlag) {
if (intrNode != NILGNODE) {
ignoreErrors = FALSE;
JobStart (intrNode, JOB_SPECIAL, (Job *)0);
while (nJobs) {
Job_CatchChildren ();
}
}
if (exitNode != NILGNODE) {
ignoreErrors = FALSE;
JobStart (exitNode, JOB_SPECIAL, (Job *)0);
while (nJobs) {
Job_CatchChildren ();
}
}
}
exit (0);
}
/*
*-----------------------------------------------------------------------
* Job_End --
* Do final processing such as the running of the commands
* attached to the .END target.
*
* Results:
* Number of errors reported.
*
* Side Effects:
* The process' temporary file (tfile) is removed if it still
* existed.
*-----------------------------------------------------------------------
*/
int
Job_End (void)
{
if (DEBUG(JOB)) {
printf("Job_End()\n");
}
if (errors == 0) {
if (endNode != NILGNODE) {
JobStart (endNode, JOB_SPECIAL, (Job *)0);
while (nJobs) {
Job_CatchChildren ();
}
}
} else {
if (errNode != NILGNODE) {
JobStart (errNode, JOB_SPECIAL, (Job *)0);
while (nJobs) {
Job_CatchChildren ();
}
}
}
if (exitNode != NILGNODE) {
JobStart (exitNode, JOB_SPECIAL, (Job *)0);
while (nJobs) {
Job_CatchChildren ();
}
}
if (remoteEnviron != NULL) {
(void) unlink(remoteEnviron);
free(remoteEnviron);
remoteEnviron = NULL;
}
return(errors);
}
/*-
*-----------------------------------------------------------------------
* Job_Wait --
* Waits for all running jobs to finish and returns. Sets 'aborting'
* to ABORT_WAIT to prevent other jobs from starting.
*
* Results:
* None.
*
* Side Effects:
* Currently running jobs finish.
*
*-----------------------------------------------------------------------
*/
void
Job_Wait(void)
{
int old_aborting = aborting;
if (DEBUG(JOB)) {
printf("Job_Wait() (aborting %d)\n", aborting);
}
aborting = ABORT_WAIT;
while (nJobs != 0) {
Job_CatchChildren();
}
aborting = old_aborting;
}
/*-
*-----------------------------------------------------------------------
* Job_AbortAll --
* Abort all currently running jobs without handling output or anything.
* This function is to be called only in the event of a major
* error. Most definitely NOT to be called from JobInterrupt.
*
* Results:
* None
*
* Side Effects:
* All children are killed, not just the firstborn
*-----------------------------------------------------------------------
*/
void
Job_AbortAll (void)
{
LstNode ln; /* element in job table */
Job *job; /* the job descriptor in that element */
int foo;
if (DEBUG(JOB)) {
printf("Job_AbortAll()\n");
}
aborting = ABORT_ERROR;
if (nJobs) {
Lst_Open (jobs);
while ((ln = Lst_Next (jobs)) != NILLNODE) {
job = (Job *) Lst_Datum (ln);
/*
* kill the child process with increasingly drastic signals to make
* darn sure it's dead.
*/
KILL(job->pid, SIGINT);
KILL(job->pid, SIGKILL);
}
}
/*
* Catch as many children as want to report in at first, then give up
*/
while (waitpid(WAIT_ANY, &foo, WNOHANG) > 0) {
;
}
}
Reference in New Issue View Git Blame Copy Permalink