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Diffstat (limited to 'usr.bin/make/job.c')
| -rw-r--r-- | usr.bin/make/job.c | 2661 |
1 files changed, 2661 insertions, 0 deletions
diff --git a/usr.bin/make/job.c b/usr.bin/make/job.c new file mode 100644 index 0000000..e2729ea --- /dev/null +++ b/usr.bin/make/job.c @@ -0,0 +1,2661 @@ +/* + * Copyright (c) 1988, 1989, 1990, 1993 + * The Regents of the University of California. All rights reserved. + * 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, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static char sccsid[] = "@(#)job.c 8.2 (Berkeley) 3/19/94"; +#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_CatchOutput Print any output our children have produced. + * Should also be called fairly frequently to + * keep the user informed of what's going on. + * If no output is waiting, it will block for + * a time given by the SEL_* constants, below, + * or until output is ready. + * + * 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_ParseShell Given the line following a .SHELL target, parse + * the line as a shell specification. Returns + * FAILURE if the spec was incorrect. + * + * 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 <sys/stat.h> +#include <sys/file.h> +#include <sys/time.h> +#include <sys/wait.h> + +#include <errno.h> +#include <fcntl.h> +#include <signal.h> +#include <stdio.h> +#include <string.h> + +#include "make.h" +#include "hash.h" +#include "dir.h" +#include "job.h" +#include "pathnames.h" + +extern int errno; + +/* + * error handling variables + */ +static int errors = 0; /* number of errors reported */ +static 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. The node postCommands is really just the + * .END target but we keep it around to avoid having to search for it + * all the time. + */ +static GNode *postCommands; /* node containing commands to execute when + * everything else is done */ +static int numCommands; /* The number of commands actually printed + * for a target. Should this number be + * 0, no shell will be executed. */ + + +/* + * 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 */ + +/* + * tfile is the name of a file into which all shell commands are put. It is + * used over by removing it before the child shell is executed. The XXXXX in + * the string are replaced by the pid of the make process in a 5-character + * field with leading zeroes. + */ +static char tfile[] = TMPPAT; + + +/* + * Descriptions for various shells. + */ +static Shell shells[] = { + /* + * CSH description. The csh can do echo control by playing + * with the setting of the 'echo' shell variable. Sadly, + * however, it is unable to do error control nicely. + */ +{ + "csh", + TRUE, "unset verbose", "set verbose", "unset verbose", 10, + FALSE, "echo \"%s\"\n", "csh -c \"%s || exit 0\"", + "v", "e", +}, + /* + * SH description. Echo control is also possible and, under + * sun UNIX anyway, one can even control error checking. + */ +{ + "sh", + TRUE, "set -", "set -v", "set -", 5, + FALSE, "echo \"%s\"\n", "sh -c '%s || exit 0'\n", + "v", "e", +}, + /* + * UNKNOWN. + */ +{ + (char *)0, + FALSE, (char *)0, (char *)0, (char *)0, 0, + FALSE, (char *)0, (char *)0, + (char *)0, (char *)0, +} +}; +static Shell *commandShell = &shells[DEFSHELL];/* this is the shell to + * which we pass all + * commands in the Makefile. + * It is set by the + * Job_ParseShell function */ +static char *shellPath = (char *) NULL, /* full pathname of + * executable image */ + *shellName; /* last component of shell */ + + +static int maxJobs; /* The most children we can run at once */ +static int maxLocal; /* The most local ones we can have */ +static int nJobs; /* The number of children currently running */ +static int nLocal; /* The number of local children */ +static Lst jobs; /* The structures that describe them */ +static 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 */ +#ifndef RMT_WILL_WATCH +static fd_set outputs; /* Set of descriptors of pipes connected to + * the output channels of children */ +#endif + +static GNode *lastNode; /* The node for which output was most recently + * produced. */ +static char *targFmt; /* Format string to use to head output from a + * job when it's not the most-recent job heard + * from */ +#define TARG_FMT "--- %s ---\n" /* Default format */ + +/* + * 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. + */ +static Lst stoppedJobs; /* Lst of Job structures describing + * jobs that were stopped due to concurrency + * limits or migration home */ + + +#if defined(USE_PGRP) && defined(SYSV) +#define KILL(pid,sig) killpg (-(pid),(sig)) +#else +# if defined(USE_PGRP) +#define KILL(pid,sig) killpg ((pid),(sig)) +# else +#define KILL(pid,sig) kill ((pid),(sig)) +# endif +#endif + +static int JobCondPassSig __P((Job *, int)); +static void JobPassSig __P((int)); +static int JobCmpPid __P((Job *, int)); +static int JobPrintCommand __P((char *, Job *)); +static int JobSaveCommand __P((char *, GNode *)); +static void JobFinish __P((Job *, union wait)); +static void JobExec __P((Job *, char **)); +static void JobMakeArgv __P((Job *, char **)); +static void JobRestart __P((Job *)); +static int JobStart __P((GNode *, int, Job *)); +static void JobDoOutput __P((Job *, Boolean)); +static Shell *JobMatchShell __P((char *)); +static void JobInterrupt __P((int)); + +/*- + *----------------------------------------------------------------------- + * 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(job, signo) + Job *job; /* Job to biff */ + int signo; /* Signal to send it */ +{ +#ifdef RMT_WANTS_SIGNALS + if (job->flags & JOB_REMOTE) { + (void)Rmt_Signal(job, signo); + } else { + KILL(job->pid, signo); + } +#else + /* + * Assume that sending the signal to job->pid will signal any remote + * job as well. + */ + KILL(job->pid, signo); +#endif + 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(signo) + int signo; /* The signal number we've received */ +{ + int mask; + + 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(0); + } + + /* + * 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. + */ + mask = sigblock(0); + (void) sigsetmask(~0 & ~(1 << (signo-1))); + signal(signo, SIG_DFL); + + kill(getpid(), signo); + + Lst_ForEach(jobs, JobCondPassSig, (ClientData)SIGCONT); + + sigsetmask(mask); + signal(signo, JobPassSig); + +} + +/*- + *----------------------------------------------------------------------- + * 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 (job, pid) + int pid; /* process id desired */ + Job *job; /* job to examine */ +{ + return (pid - job->pid); +} + +/*- + *----------------------------------------------------------------------- + * JobPrintCommand -- + * Put out another command for the given job. If the command starts + * with an @ or a - we process it specially. In the former case, + * so long as the -s and -n flags weren't given to make, we stick + * a shell-specific echoOff command in the script. In the latter, + * we ignore errors for the entire job, unless the shell has error + * control. + * If the command is just "..." we take all future commands for this + * job to be commands to be executed once the entire graph has been + * made and return non-zero to signal that the end of the commands + * was reached. These commands are later attached to the postCommands + * node and executed by Job_End when all things are done. + * This function is called from JobStart via Lst_ForEach. + * + * Results: + * Always 0, unless the command was "..." + * + * Side Effects: + * If the command begins with a '-' and the shell has no error control, + * the JOB_IGNERR flag is set in the job descriptor. + * If the command is "..." and we're not ignoring such things, + * tailCmds is set to the successor node of the cmd. + * numCommands is incremented if the command is actually printed. + *----------------------------------------------------------------------- + */ +static int +JobPrintCommand (cmd, job) + char *cmd; /* command string to print */ + Job *job; /* job for which to print it */ +{ + Boolean noSpecials; /* true if we shouldn't worry about + * inserting special commands into + * the input stream. */ + Boolean shutUp = FALSE; /* true if we put a no echo command + * into the command file */ + Boolean errOff = FALSE; /* true if we turned error checking + * off before printing the command + * and need to turn it back on */ + char *cmdTemplate; /* Template to use when printing the + * command */ + char *cmdStart; /* Start of expanded command */ + LstNode cmdNode; /* Node for replacing the command */ + + noSpecials = (noExecute && ! (job->node->type & OP_MAKE)); + + if (strcmp (cmd, "...") == 0) { + job->node->type |= OP_SAVE_CMDS; + if ((job->flags & JOB_IGNDOTS) == 0) { + job->tailCmds = Lst_Succ (Lst_Member (job->node->commands, + (ClientData)cmd)); + return (1); + } + return (0); + } + +#define DBPRINTF(fmt, arg) if (DEBUG(JOB)) printf (fmt, arg); fprintf (job->cmdFILE, fmt, arg) + + numCommands += 1; + + /* + * For debugging, we replace each command with the result of expanding + * the variables in the command. + */ + cmdNode = Lst_Member (job->node->commands, (ClientData)cmd); + cmdStart = cmd = Var_Subst (NULL, cmd, job->node, FALSE); + Lst_Replace (cmdNode, (ClientData)cmdStart); + + cmdTemplate = "%s\n"; + + /* + * Check for leading @' and -'s to control echoing and error checking. + */ + while (*cmd == '@' || *cmd == '-') { + if (*cmd == '@') { + shutUp = TRUE; + } else { + errOff = TRUE; + } + cmd++; + } + + while (isspace((unsigned char) *cmd)) + cmd++; + + if (shutUp) { + if (! (job->flags & JOB_SILENT) && !noSpecials && + commandShell->hasEchoCtl) { + DBPRINTF ("%s\n", commandShell->echoOff); + } else { + shutUp = FALSE; + } + } + + if (errOff) { + if ( ! (job->flags & JOB_IGNERR) && !noSpecials) { + if (commandShell->hasErrCtl) { + /* + * we don't want the error-control commands showing + * up either, so we turn off echoing while executing + * them. We could put another field in the shell + * structure to tell JobDoOutput to look for this + * string too, but why make it any more complex than + * it already is? + */ + if (! (job->flags & JOB_SILENT) && !shutUp && + commandShell->hasEchoCtl) { + DBPRINTF ("%s\n", commandShell->echoOff); + DBPRINTF ("%s\n", commandShell->ignErr); + DBPRINTF ("%s\n", commandShell->echoOn); + } else { + DBPRINTF ("%s\n", commandShell->ignErr); + } + } else if (commandShell->ignErr && + (*commandShell->ignErr != '\0')) + { + /* + * The shell has no error control, so we need to be + * weird to get it to ignore any errors from the command. + * If echoing is turned on, we turn it off and use the + * errCheck template to echo the command. Leave echoing + * off so the user doesn't see the weirdness we go through + * to ignore errors. Set cmdTemplate to use the weirdness + * instead of the simple "%s\n" template. + */ + if (! (job->flags & JOB_SILENT) && !shutUp && + commandShell->hasEchoCtl) { + DBPRINTF ("%s\n", commandShell->echoOff); + DBPRINTF (commandShell->errCheck, cmd); + shutUp = TRUE; + } + cmdTemplate = commandShell->ignErr; + /* + * The error ignoration (hee hee) is already taken care + * of by the ignErr template, so pretend error checking + * is still on. + */ + errOff = FALSE; + } else { + errOff = FALSE; + } + } else { + errOff = FALSE; + } + } + + DBPRINTF (cmdTemplate, cmd); + + if (errOff) { + /* + * If echoing is already off, there's no point in issuing the + * echoOff command. Otherwise we issue it and pretend it was on + * for the whole command... + */ + if (!shutUp && !(job->flags & JOB_SILENT) && commandShell->hasEchoCtl){ + DBPRINTF ("%s\n", commandShell->echoOff); + shutUp = TRUE; + } + DBPRINTF ("%s\n", commandShell->errCheck); + } + if (shutUp) { + DBPRINTF ("%s\n", commandShell->echoOn); + } + return (0); +} + +/*- + *----------------------------------------------------------------------- + * JobSaveCommand -- + * Save a command to be executed when everything else is done. + * Callback function for JobFinish... + * + * Results: + * Always returns 0 + * + * Side Effects: + * The command is tacked onto the end of postCommands's commands list. + * + *----------------------------------------------------------------------- + */ +static int +JobSaveCommand (cmd, gn) + char *cmd; + GNode *gn; +{ + cmd = Var_Subst (NULL, cmd, gn, FALSE); + (void)Lst_AtEnd (postCommands->commands, (ClientData)cmd); + return (0); +} + +/*- + *----------------------------------------------------------------------- + * 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, jstat.w_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. + * Final commands for the job are placed on postCommands. + * + * If we got an error and are aborting (aborting == ABORT_ERROR) and + * the job list is now empty, we are done for the day. + * 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, status) + Job *job; /* job to finish */ + union wait status; /* sub-why job went away */ +{ + Boolean done; + + if ((WIFEXITED(status) && + (((status.w_retcode != 0) && !(job->flags & JOB_IGNERR)))) || + (WIFSIGNALED(status) && (status.w_termsig != 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... + */ + if (usePipes) { +#ifdef RMT_WILL_WATCH + Rmt_Ignore(job->inPipe); +#else + FD_CLR(job->inPipe, &outputs); +#endif /* RMT_WILL_WATCH */ + if (job->outPipe != job->inPipe) { + (void)close (job->outPipe); + } + JobDoOutput (job, TRUE); + (void)close (job->inPipe); + } else { + (void)close (job->outFd); + JobDoOutput (job, TRUE); + } + + if (job->cmdFILE != NULL && job->cmdFILE != stdout) { + fclose(job->cmdFILE); + } + done = TRUE; + } else if (WIFEXITED(status) && status.w_retcode != 0) { + /* + * Deal with ignored errors in -B mode. We need to print a message + * telling of the ignored error as well as setting status.w_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) && (status.w_termsig == SIGCONT)) || + DEBUG(JOB)) + { + FILE *out; + + if (!usePipes && (job->flags & JOB_IGNERR)) { + /* + * If output is going to a file and this job is ignoring + * errors, arrange to have the exit status sent to the + * output file as well. + */ + out = fdopen (job->outFd, "w"); + } else { + out = stdout; + } + + if (WIFEXITED(status)) { + if (status.w_retcode != 0) { + if (usePipes && job->node != lastNode) { + fprintf (out, targFmt, job->node->name); + lastNode = job->node; + } + fprintf (out, "*** Error code %d%s\n", status.w_retcode, + (job->flags & JOB_IGNERR) ? " (ignored)" : ""); + + if (job->flags & JOB_IGNERR) { + status.w_status = 0; + } + } else if (DEBUG(JOB)) { + if (usePipes && job->node != lastNode) { + fprintf (out, targFmt, job->node->name); + lastNode = job->node; + } + fprintf (out, "*** Completed successfully\n"); + } + } else if (WIFSTOPPED(status)) { + if (usePipes && job->node != lastNode) { + fprintf (out, targFmt, job->node->name); + lastNode = job->node; + } + if (! (job->flags & JOB_REMIGRATE)) { + fprintf (out, "*** Stopped -- signal %d\n", status.w_stopsig); + } + job->flags |= JOB_RESUME; + (void)Lst_AtEnd(stoppedJobs, (ClientData)job); + fflush(out); + return; + } else if (status.w_termsig == 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_REMIGRATE|JOB_RESTART)) { + if (usePipes && job->node != lastNode) { + fprintf (out, targFmt, job->node->name); + lastNode = job->node; + } + fprintf (out, "*** 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(out); + return; + } else { + if (usePipes && job->node != lastNode) { + fprintf (out, targFmt, job->node->name); + lastNode = job->node; + } + fprintf (out, "*** Signal %d\n", status.w_termsig); + } + + fflush (out); + } + + /* + * 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.w_status == 0) && + !Lst_IsAtEnd (job->node->commands)) + { + switch (JobStart (job->node, + job->flags & JOB_IGNDOTS, + job)) + { + case JOB_RUNNING: + done = FALSE; + break; + case JOB_ERROR: + done = TRUE; + status.w_retcode = 1; + 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.w_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. In addition, any saved commands for the node are placed + * on the .END target. + */ + if (job->tailCmds != NILLNODE) { + Lst_ForEachFrom (job->node->commands, job->tailCmds, + JobSaveCommand, + (ClientData)job->node); + } + job->node->made = MADE; + Make_Update (job->node); + free((Address)job); + } else if (status.w_status) { + 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; + } + + if ((aborting == ABORT_ERROR) && Job_Empty()) { + /* + * If we are aborting and the job table is now empty, we finish. + */ + (void) unlink (tfile); + Finish (errors); + } +} + +/*- + *----------------------------------------------------------------------- + * 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 (gn, silent) + 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 */ + struct timeval times[2]; /* Times for utimes() call */ + + 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); + } + + if (noExecute) { + return; + } + + if (gn->type & OP_ARCHV) { + Arch_Touch (gn); + } else if (gn->type & OP_LIB) { + Arch_TouchLib (gn); + } else { + char *file = gn->path ? gn->path : gn->name; + + times[0].tv_sec = times[1].tv_sec = now; + times[0].tv_usec = times[1].tv_usec = 0; + if (utimes(file, times) < 0){ + streamID = open (file, O_RDWR | O_CREAT, 0666); + + if (streamID >= 0) { + char c; + + /* + * Read and write a byte to the file to change the + * modification time, then close the file. + */ + if (read(streamID, &c, 1) == 1) { + lseek(streamID, 0L, L_SET); + write(streamID, &c, 1); + } + + (void)close (streamID); + } 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 (gn, abortProc) + GNode *gn; /* The target whose commands need + * verifying */ + void (*abortProc) __P((const char *, ...)); + /* Function to abort with message */ +{ + 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 (IMPSRC, Var_Value (TARGET, 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); + } else if (keepgoing) { + printf ("make: don't know how to make %s (continuing)\n", + gn->name); + return (FALSE); + } else { + (*abortProc) ("make: don't know how to make %s. Stop", + gn->name); + return(FALSE); + } + } + } + return (TRUE); +} +#ifdef RMT_WILL_WATCH +/*- + *----------------------------------------------------------------------- + * JobLocalInput -- + * Handle a pipe becoming readable. Callback function for Rmt_Watch + * + * Results: + * None + * + * Side Effects: + * JobDoOutput is called. + * + *----------------------------------------------------------------------- + */ +/*ARGSUSED*/ +static void +JobLocalInput(stream, job) + int stream; /* Stream that's ready (ignored) */ + Job *job; /* Job to which the stream belongs */ +{ + JobDoOutput(job, FALSE); +} +#endif /* RMT_WILL_WATCH */ + +/*- + *----------------------------------------------------------------------- + * 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, argv) + Job *job; /* Job to execute */ + char **argv; +{ + int cpid; /* ID of new child */ + + if (DEBUG(JOB)) { + int i; + + printf("Running %s %sly\n", job->node->name, + job->flags&JOB_REMOTE?"remote":"local"); + printf("\tCommand: "); + for (i = 0; argv[i] != (char *)NULL; i++) { + printf("%s ", argv[i]); + } + printf("\n"); + } + + /* + * Some jobs produce no output and it's disconcerting to have + * no feedback of their running (since they produce no output, the + * banner with their name in it never appears). This is an attempt to + * provide that feedback, even if nothing follows it. + */ + if ((lastNode != job->node) && (job->flags & JOB_FIRST) && + !(job->flags & JOB_SILENT)) + { + printf(targFmt, job->node->name); + lastNode = job->node; + } + +#ifdef RMT_NO_EXEC + if (job->flags & JOB_REMOTE) { + goto jobExecFinish; + } +#endif /* RMT_NO_EXEC */ + + if ((cpid = vfork()) == -1) { + Punt ("Cannot fork"); + } else if (cpid == 0) { + + /* + * Must duplicate the input stream down to the child's input and + * reset it to the beginning (again). Since the stream was marked + * close-on-exec, we must clear that bit in the new input. + */ + (void) dup2(fileno(job->cmdFILE), 0); + fcntl(0, F_SETFD, 0); + lseek(0, 0, L_SET); + + if (usePipes) { + /* + * Set up the child's output to be routed through the pipe + * we've created for it. + */ + (void) dup2 (job->outPipe, 1); + } else { + /* + * We're capturing output in a file, so we duplicate the + * descriptor to the temporary file into the standard + * output. + */ + (void) dup2 (job->outFd, 1); + } + /* + * The output channels are marked close on exec. This bit was + * duplicated by the dup2 (on some systems), so we have to clear + * it before routing the shell's error output to the same place as + * its standard output. + */ + fcntl(1, F_SETFD, 0); + (void) dup2 (1, 2); + +#ifdef USE_PGRP + /* + * We want to switch the child into a different process family so + * we can kill it and all its descendants in one fell swoop, + * by killing its process family, but not commit suicide. + */ + + (void) setpgrp(0, getpid()); +#endif USE_PGRP + + (void) execv (shellPath, argv); + (void) write (2, "Could not execute shell\n", + sizeof ("Could not execute shell")); + _exit (1); + } else { + job->pid = cpid; + + if (usePipes && (job->flags & JOB_FIRST) ) { + /* + * The first time a job is run for a node, we set the current + * position in the buffer to the beginning and mark another + * stream to watch in the outputs mask + */ + job->curPos = 0; + +#ifdef RMT_WILL_WATCH + Rmt_Watch(job->inPipe, JobLocalInput, job); +#else + FD_SET(job->inPipe, &outputs); +#endif /* RMT_WILL_WATCH */ + } + + if (job->flags & JOB_REMOTE) { + job->rmtID = 0; + } else { + nLocal += 1; + /* + * XXX: Used to not happen if CUSTOMS. Why? + */ + if (job->cmdFILE != stdout) { + fclose(job->cmdFILE); + job->cmdFILE = NULL; + } + } + } + +#ifdef RMT_NO_EXEC +jobExecFinish: +#endif + /* + * Now the job is actually running, add it to the table. + */ + nJobs += 1; + (void)Lst_AtEnd (jobs, (ClientData)job); + if (nJobs == maxJobs) { + jobFull = TRUE; + } +} + +/*- + *----------------------------------------------------------------------- + * JobMakeArgv -- + * Create the argv needed to execute the shell for a given job. + * + * + * Results: + * + * Side Effects: + * + *----------------------------------------------------------------------- + */ +static void +JobMakeArgv(job, argv) + Job *job; + char **argv; +{ + int argc; + static char args[10]; /* For merged arguments */ + + argv[0] = shellName; + argc = 1; + + if ((commandShell->exit && (*commandShell->exit != '-')) || + (commandShell->echo && (*commandShell->echo != '-'))) + { + /* + * At least one of the flags doesn't have a minus before it, so + * merge them together. Have to do this because the *(&(@*#*&#$# + * Bourne shell thinks its second argument is a file to source. + * Grrrr. Note the ten-character limitation on the combined arguments. + */ + (void)sprintf(args, "-%s%s", + ((job->flags & JOB_IGNERR) ? "" : + (commandShell->exit ? commandShell->exit : "")), + ((job->flags & JOB_SILENT) ? "" : + (commandShell->echo ? commandShell->echo : ""))); + + if (args[1]) { + argv[argc] = args; + argc++; + } + } else { + if (!(job->flags & JOB_IGNERR) && commandShell->exit) { + argv[argc] = commandShell->exit; + argc++; + } + if (!(job->flags & JOB_SILENT) && commandShell->echo) { + argv[argc] = commandShell->echo; + argc++; + } + } + argv[argc] = (char *)NULL; +} + +/*- + *----------------------------------------------------------------------- + * 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; /* Job to restart */ +{ + if (job->flags & JOB_REMIGRATE) { + if (DEBUG(JOB)) { + printf("Remigrating %x\n", job->pid); + } + if (nLocal != maxLocal) { + /* + * Job cannot be remigrated, but there's room on the local + * machine, so resume the job and note that another + * local job has started. + */ + if (DEBUG(JOB)) { + printf("resuming on local machine\n"); + } + KILL(job->pid, SIGCONT); + nLocal +=1; + job->flags &= ~(JOB_REMIGRATE|JOB_RESUME); + } else { + /* + * Job cannot be restarted. Mark the table as full and + * place the job back on the list of stopped jobs. + */ + if (DEBUG(JOB)) { + printf("holding\n"); + } + (void)Lst_AtFront(stoppedJobs, (ClientData)job); + jobFull = TRUE; + if (DEBUG(JOB)) { + printf("Job queue is full.\n"); + } + return; + } + + (void)Lst_AtEnd(jobs, (ClientData)job); + nJobs += 1; + if (nJobs == maxJobs) { + jobFull = TRUE; + if (DEBUG(JOB)) { + printf("Job queue is full.\n"); + } + } + } else if (job->flags & JOB_RESTART) { + /* + * Set up the control arguments to the shell. This is based on the + * flags set earlier for this job. If the JOB_IGNERR flag is clear, + * the 'exit' flag of the commandShell is used to cause it to exit + * upon receiving an error. If the JOB_SILENT flag is clear, the + * 'echo' flag of the commandShell is used to get it to start echoing + * as soon as it starts processing commands. + */ + char *argv[4]; + + JobMakeArgv(job, argv); + + if (DEBUG(JOB)) { + printf("Restarting %s...", job->node->name); + } + if (((nLocal >= maxLocal) && ! (job->flags & JOB_SPECIAL))) { + /* + * 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; + } else { + /* + * Job may be run locally. + */ + if (DEBUG(JOB)) { + printf("running locally\n"); + } + job->flags &= ~JOB_REMOTE; + } + JobExec(job, argv); + } else { + /* + * 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); + } + if (((job->flags & JOB_REMOTE) || + (nLocal < maxLocal) || + (((job->flags & JOB_SPECIAL)) && + (maxLocal == 0))) && + (nJobs != maxJobs)) + { + /* + * 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. + */ + Boolean error; + extern int errno; + union wait status; + +#ifdef RMT_WANTS_SIGNALS + if (job->flags & JOB_REMOTE) { + error = !Rmt_Signal(job, SIGCONT); + } else +#endif /* RMT_WANTS_SIGNALS */ + error = (KILL(job->pid, SIGCONT) != 0); + + if (!error) { + /* + * 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_termsig = SIGCONT; + JobFinish(job, status); + + job->flags &= ~(JOB_RESUME|JOB_CONTINUING); + if (DEBUG(JOB)) { + printf("done\n"); + } + } else { + Error("couldn't resume %s: %s", + job->node->name, strerror(errno)); + status.w_status = 0; + status.w_retcode = 1; + JobFinish(job, status); + } + } else { + /* + * 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"); + } + } + } +} + +/*- + *----------------------------------------------------------------------- + * 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 (gn, flags, previous) + GNode *gn; /* target to create */ + short flags; /* flags for the job to override normal ones. + * e.g. JOB_SPECIAL or JOB_IGNDOTS */ + Job *previous; /* The previous Job structure for this node, + * if any. */ +{ + register Job *job; /* new job descriptor */ + char *argv[4]; /* Argument vector to shell */ + static int jobno = 0; /* job number of catching output in a file */ + Boolean cmdsOK; /* true if the nodes commands were all right */ + Boolean local; /* Set true if the job was run locally */ + Boolean noExec; /* Set true if we decide not to run the job */ + + 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->tailCmds = NILLNODE; + + /* + * 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 the -n flag wasn't given, we open up OUR (not the child's) + * temporary file to stuff commands in it. The thing is rd/wr so we don't + * need to reopen it to feed it to the shell. If the -n flag *was* given, + * we just set the file to be stdout. Cute, huh? + */ + if ((gn->type & OP_MAKE) || (!noExecute && !touchFlag)) { + /* + * We're serious here, but if the commands were bogus, we're + * also dead... + */ + if (!cmdsOK) { + DieHorribly(); + } + + job->cmdFILE = fopen (tfile, "w+"); + if (job->cmdFILE == (FILE *) NULL) { + Punt ("Could not open %s", tfile); + } + fcntl(fileno(job->cmdFILE), F_SETFD, 1); + /* + * Send the commands to the command file, flush all its buffers then + * rewind and remove the thing. + */ + noExec = FALSE; + + /* + * used to be backwards; replace when start doing multiple commands + * per shell. + */ + if (compatMake) { + /* + * Be compatible: If this is the first time for this node, + * verify its commands are ok and open the commands list for + * sequential access by later invocations of JobStart. + * Once that is done, we take the next command off the list + * and print it to the command file. If the command was an + * ellipsis, note that there's nothing more to execute. + */ + if ((job->flags&JOB_FIRST) && (Lst_Open(gn->commands) != SUCCESS)){ + cmdsOK = FALSE; + } else { + LstNode ln = Lst_Next (gn->commands); + + if ((ln == NILLNODE) || + JobPrintCommand ((char *)Lst_Datum (ln), job)) + { + noExec = TRUE; + Lst_Close (gn->commands); + } + if (noExec && !(job->flags & JOB_FIRST)) { + /* + * If we're not going to execute anything, the job + * is done and we need to close down the various + * file descriptors we've opened for output, then + * call JobDoOutput to catch the final characters or + * send the file to the screen... Note that the i/o streams + * are only open if this isn't the first job. + * Note also that this could not be done in + * Job_CatchChildren b/c it wasn't clear if there were + * more commands to execute or not... + */ + if (usePipes) { +#ifdef RMT_WILL_WATCH + Rmt_Ignore(job->inPipe); +#else + FD_CLR(job->inPipe, &outputs); +#endif + if (job->outPipe != job->inPipe) { + (void)close (job->outPipe); + } + JobDoOutput (job, TRUE); + (void)close (job->inPipe); + } else { + (void)close (job->outFd); + JobDoOutput (job, TRUE); + } + } + } + } else { + /* + * We can do all the commands at once. hooray for sanity + */ + numCommands = 0; + Lst_ForEach (gn->commands, JobPrintCommand, (ClientData)job); + + /* + * If we didn't print out any commands to the shell script, + * there's not much point in executing the shell, is there? + */ + if (numCommands == 0) { + noExec = TRUE; + } + } + } else if (noExecute) { + /* + * Not executing anything -- just print all the commands to stdout + * in one fell swoop. This will still set up job->tailCmds correctly. + */ + if (lastNode != gn) { + printf (targFmt, gn->name); + lastNode = gn; + } + job->cmdFILE = stdout; + /* + * Only print the commands if they're ok, but don't die if they're + * not -- just let the user know they're bad and keep going. It + * doesn't do any harm in this case and may do some good. + */ + if (cmdsOK) { + Lst_ForEach(gn->commands, JobPrintCommand, (ClientData)job); + } + /* + * Don't execute the shell, thank you. + */ + noExec = TRUE; + } else { + /* + * Just touch the target and note that no shell should be executed. + * Set cmdFILE to stdout to make life easier. Check the commands, too, + * but don't die if they're no good -- it does no harm to keep working + * up the graph. + */ + job->cmdFILE = stdout; + Job_Touch (gn, job->flags&JOB_SILENT); + noExec = TRUE; + } + + /* + * If we're not supposed to execute a shell, don't. + */ + if (noExec) { + /* + * Unlink and close the command file if we opened one + */ + if (job->cmdFILE != stdout) { + (void) unlink (tfile); + fclose(job->cmdFILE); + } else { + 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) { + if (job->tailCmds != NILLNODE) { + Lst_ForEachFrom(job->node->commands, job->tailCmds, + JobSaveCommand, + (ClientData)job->node); + } + Make_Update(job->node); + } + free((Address)job); + return(JOB_FINISHED); + } else { + free((Address)job); + return(JOB_ERROR); + } + } else { + fflush (job->cmdFILE); + (void) unlink (tfile); + } + + /* + * Set up the control arguments to the shell. This is based on the flags + * set earlier for this job. + */ + JobMakeArgv(job, argv); + + /* + * 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 (usePipes) { + int fd[2]; + (void) pipe(fd); + job->inPipe = fd[0]; + job->outPipe = fd[1]; + (void)fcntl (job->inPipe, F_SETFD, 1); + (void)fcntl (job->outPipe, F_SETFD, 1); + } else { + printf ("Remaking `%s'\n", gn->name); + fflush (stdout); + sprintf (job->outFile, "%s%02d", tfile, jobno); + jobno = (jobno + 1) % 100; + job->outFd = open(job->outFile,O_WRONLY|O_CREAT|O_APPEND,0600); + (void)fcntl (job->outFd, F_SETFD, 1); + } + } + + local = TRUE; + + if (local && (((nLocal >= maxLocal) && + !(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); + } else { + if ((nLocal >= maxLocal) && local) { + /* + * 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"); + } + } + JobExec(job, argv); + } + return(JOB_RUNNING); +} + +/*- + *----------------------------------------------------------------------- + * JobDoOutput -- + * This function is called at different times depending on + * whether the user has specified that output is to be collected + * via pipes or temporary files. In the former case, we are called + * whenever there is something to read on the pipe. We collect more + * output from the given job and store it in the job's outBuf. If + * this makes up a line, we print it tagged by the job's identifier, + * as necessary. + * If output has been collected in a temporary file, we open the + * file and read it line by line, transfering it to our own + * output channel until the file is empty. At which point we + * remove the temporary file. + * In both cases, however, we keep our figurative eye out for the + * 'noPrint' line for the shell from which the output came. If + * we recognize a line, we don't print it. If the command is not + * alone on the line (the character after it is not \0 or \n), we + * do print whatever follows it. + * + * Results: + * None + * + * Side Effects: + * curPos may be shifted as may the contents of outBuf. + *----------------------------------------------------------------------- + */ +static void +JobDoOutput (job, finish) + register Job *job; /* the job whose output needs printing */ + Boolean finish; /* TRUE if this is the last time we'll be + * called for this job */ +{ + Boolean gotNL = FALSE; /* true if got a newline */ + register int nr; /* number of bytes read */ + register int i; /* auxiliary index into outBuf */ + register int max; /* limit for i (end of current data) */ + int nRead; /* (Temporary) number of bytes read */ + + FILE *oFILE; /* Stream pointer to shell's output file */ + char inLine[132]; + + + if (usePipes) { + /* + * Read as many bytes as will fit in the buffer. + */ +end_loop: + + nRead = read (job->inPipe, &job->outBuf[job->curPos], + JOB_BUFSIZE - job->curPos); + if (nRead < 0) { + if (DEBUG(JOB)) { + perror("JobDoOutput(piperead)"); + } + nr = 0; + } else { + nr = nRead; + } + + /* + * If we hit the end-of-file (the job is dead), we must flush its + * remaining output, so pretend we read a newline if there's any + * output remaining in the buffer. + * Also clear the 'finish' flag so we stop looping. + */ + if ((nr == 0) && (job->curPos != 0)) { + job->outBuf[job->curPos] = '\n'; + nr = 1; + finish = FALSE; + } else if (nr == 0) { + finish = FALSE; + } + + /* + * Look for the last newline in the bytes we just got. If there is + * one, break out of the loop with 'i' as its index and gotNL set + * TRUE. + */ + max = job->curPos + nr; + for (i = job->curPos + nr - 1; i >= job->curPos; i--) { + if (job->outBuf[i] == '\n') { + gotNL = TRUE; + break; + } else if (job->outBuf[i] == '\0') { + /* + * Why? + */ + job->outBuf[i] = ' '; + } + } + + if (!gotNL) { + job->curPos += nr; + if (job->curPos == JOB_BUFSIZE) { + /* + * If we've run out of buffer space, we have no choice + * but to print the stuff. sigh. + */ + gotNL = TRUE; + i = job->curPos; + } + } + if (gotNL) { + /* + * Need to send the output to the screen. Null terminate it + * first, overwriting the newline character if there was one. + * So long as the line isn't one we should filter (according + * to the shell description), we print the line, preceeded + * by a target banner if this target isn't the same as the + * one for which we last printed something. + * The rest of the data in the buffer are then shifted down + * to the start of the buffer and curPos is set accordingly. + */ + job->outBuf[i] = '\0'; + if (i >= job->curPos) { + register char *cp, *ecp; + + cp = job->outBuf; + if (commandShell->noPrint) { + ecp = Str_FindSubstring(job->outBuf, + commandShell->noPrint); + while (ecp != (char *)NULL) { + if (cp != ecp) { + *ecp = '\0'; + if (job->node != lastNode) { + printf (targFmt, job->node->name); + lastNode = job->node; + } + /* + * The only way there wouldn't be a newline after + * this line is if it were the last in the buffer. + * however, since the non-printable comes after it, + * there must be a newline, so we don't print one. + */ + printf ("%s", cp); + } + cp = ecp + commandShell->noPLen; + if (cp != &job->outBuf[i]) { + /* + * Still more to print, look again after skipping + * the whitespace following the non-printable + * command.... + */ + cp++; + while (*cp == ' ' || *cp == '\t' || *cp == '\n') { + cp++; + } + ecp = Str_FindSubstring (cp, + commandShell->noPrint); + } else { + break; + } + } + } + + /* + * There's still more in that thar buffer. This time, though, + * we know there's no newline at the end, so we add one of + * our own free will. + */ + if (*cp != '\0') { + if (job->node != lastNode) { + printf (targFmt, job->node->name); + lastNode = job->node; + } + printf ("%s\n", cp); + } + + fflush (stdout); + } + if (i < max - 1) { + /* shift the remaining characters down */ + memcpy ( job->outBuf, &job->outBuf[i + 1], max - (i + 1)); + job->curPos = max - (i + 1); + + } else { + /* + * We have written everything out, so we just start over + * from the start of the buffer. No copying. No nothing. + */ + job->curPos = 0; + } + } + if (finish) { + /* + * If the finish flag is true, we must loop until we hit + * end-of-file on the pipe. This is guaranteed to happen eventually + * since the other end of the pipe is now closed (we closed it + * explicitly and the child has exited). When we do get an EOF, + * finish will be set FALSE and we'll fall through and out. + */ + goto end_loop; + } + } else { + /* + * We've been called to retrieve the output of the job from the + * temporary file where it's been squirreled away. This consists of + * opening the file, reading the output line by line, being sure not + * to print the noPrint line for the shell we used, then close and + * remove the temporary file. Very simple. + * + * Change to read in blocks and do FindSubString type things as for + * pipes? That would allow for "@echo -n..." + */ + oFILE = fopen (job->outFile, "r"); + if (oFILE != (FILE *) NULL) { + printf ("Results of making %s:\n", job->node->name); + while (fgets (inLine, sizeof(inLine), oFILE) != NULL) { + register char *cp, *ecp, *endp; + + cp = inLine; + endp = inLine + strlen(inLine); + if (endp[-1] == '\n') { + *--endp = '\0'; + } + if (commandShell->noPrint) { + ecp = Str_FindSubstring(cp, commandShell->noPrint); + while (ecp != (char *)NULL) { + if (cp != ecp) { + *ecp = '\0'; + /* + * The only way there wouldn't be a newline after + * this line is if it were the last in the buffer. + * however, since the non-printable comes after it, + * there must be a newline, so we don't print one. + */ + printf ("%s", cp); + } + cp = ecp + commandShell->noPLen; + if (cp != endp) { + /* + * Still more to print, look again after skipping + * the whitespace following the non-printable + * command.... + */ + cp++; + while (*cp == ' ' || *cp == '\t' || *cp == '\n') { + cp++; + } + ecp = Str_FindSubstring(cp, commandShell->noPrint); + } else { + break; + } + } + } + + /* + * There's still more in that thar buffer. This time, though, + * we know there's no newline at the end, so we add one of + * our own free will. + */ + if (*cp != '\0') { + printf ("%s\n", cp); + } + } + fclose (oFILE); + (void) unlink (job->outFile); + } + } + fflush(stdout); +} + +/*- + *----------------------------------------------------------------------- + * 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 (block) + Boolean block; /* TRUE if should block on the wait. */ +{ + int pid; /* pid of dead child */ + register Job *job; /* job descriptor for dead child */ + LstNode jnode; /* list element for finding job */ + union wait status; /* Exit/termination status */ + + /* + * Don't even bother if we know there's no one around. + */ + if (nLocal == 0) { + return; + } + + while ((pid = wait3((int *)&status, (block?0:WNOHANG)|WUNTRACED, + (struct rusage *)0)) > 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) && (status.w_termsig == SIGCONT)) { + jnode = Lst_Find(stoppedJobs, (ClientData)pid, JobCmpPid); + if (jnode == NILLNODE) { + Error("Resumed child (%d) not in table", pid); + continue; + } + job = (Job *)Lst_Datum(jnode); + (void)Lst_Remove(stoppedJobs, jnode); + } else { + Error ("Child (%d) not in table?", pid); + continue; + } + } else { + job = (Job *) Lst_Datum (jnode); + (void)Lst_Remove (jobs, jnode); + nJobs -= 1; + if (jobFull && DEBUG(JOB)) { + printf("Job queue is no longer full.\n"); + } + jobFull = FALSE; + nLocal -= 1; + } + + JobFinish (job, status); + } +} + +/*- + *----------------------------------------------------------------------- + * Job_CatchOutput -- + * Catch the output from our children, if we're using + * pipes do so. Otherwise just block time until we get a + * signal (most likely a SIGCHLD) since there's no point in + * just spinning when there's nothing to do and the reaping + * of a child can wait for a while. + * + * Results: + * None + * + * Side Effects: + * Output is read from pipes if we're piping. + * ----------------------------------------------------------------------- + */ +void +Job_CatchOutput () +{ + int nfds; + struct timeval timeout; + fd_set readfds; + register LstNode ln; + register Job *job; +#ifdef RMT_WILL_WATCH + int pnJobs; /* Previous nJobs */ +#endif + + fflush(stdout); +#ifdef RMT_WILL_WATCH + pnJobs = nJobs; + + /* + * It is possible for us to be called with nJobs equal to 0. This happens + * if all the jobs finish and a job that is stopped cannot be run + * locally (eg if maxLocal is 0) and cannot be exported. The job will + * be placed back on the stoppedJobs queue, Job_Empty() will return false, + * Make_Run will call us again when there's nothing for which to wait. + * nJobs never changes, so we loop forever. Hence the check. It could + * be argued that we should sleep for a bit so as not to swamp the + * exportation system with requests. Perhaps we should. + * + * NOTE: IT IS THE RESPONSIBILITY OF Rmt_Wait TO CALL Job_CatchChildren + * IN A TIMELY FASHION TO CATCH ANY LOCALLY RUNNING JOBS THAT EXIT. + * It may use the variable nLocal to determine if it needs to call + * Job_CatchChildren (if nLocal is 0, there's nothing for which to + * wait...) + */ + while (nJobs != 0 && pnJobs == nJobs) { + Rmt_Wait(); + } +#else + if (usePipes) { + readfds = outputs; + timeout.tv_sec = SEL_SEC; + timeout.tv_usec = SEL_USEC; + + if ((nfds = select (FD_SETSIZE, &readfds, (fd_set *) 0, (fd_set *) 0, &timeout)) < 0) + { + return; + } else { + if (Lst_Open (jobs) == FAILURE) { + Punt ("Cannot open job table"); + } + while (nfds && (ln = Lst_Next (jobs)) != NILLNODE) { + job = (Job *) Lst_Datum (ln); + if (FD_ISSET(job->inPipe, &readfds)) { + JobDoOutput (job, FALSE); + nfds -= 1; + } + } + Lst_Close (jobs); + } + } +#endif /* RMT_WILL_WATCH */ +} + +/*- + *----------------------------------------------------------------------- + * Job_Make -- + * Start the creation of a target. Basically a front-end for + * JobStart used by the Make module. + * + * Results: + * None. + * + * Side Effects: + * Another job is started. + * + *----------------------------------------------------------------------- + */ +void +Job_Make (gn) + GNode *gn; +{ + (void)JobStart (gn, 0, (Job *)NULL); +} + +/*- + *----------------------------------------------------------------------- + * Job_Init -- + * Initialize the process module + * + * Results: + * none + * + * Side Effects: + * lists and counters are initialized + *----------------------------------------------------------------------- + */ +void +Job_Init (maxproc, maxlocal) + 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. */ +{ + GNode *begin; /* node for commands to do at the very start */ + + sprintf (tfile, "/tmp/make%05d", getpid()); + + jobs = Lst_Init (FALSE); + stoppedJobs = Lst_Init(FALSE); + maxJobs = maxproc; + maxLocal = maxlocal; + nJobs = 0; + nLocal = 0; + jobFull = FALSE; + + aborting = 0; + errors = 0; + + lastNode = NILGNODE; + + if (maxJobs == 1) { + /* + * If only one job can run at a time, there's no need for a banner, + * no is there? + */ + targFmt = ""; + } else { + targFmt = TARG_FMT; + } + + if (shellPath == (char *) NULL) { + /* + * The user didn't specify a shell to use, so we are using the + * default one... Both the absolute path and the last component + * must be set. The last component is taken from the 'name' field + * of the default shell description pointed-to by commandShell. + * All default shells are located in _PATH_DEFSHELLDIR. + */ + shellName = commandShell->name; + shellPath = str_concat (_PATH_DEFSHELLDIR, shellName, STR_ADDSLASH); + } + + if (commandShell->exit == (char *)NULL) { + commandShell->exit = ""; + } + if (commandShell->echo == (char *)NULL) { + commandShell->echo = ""; + } + + /* + * 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(RMT_WANTS_SIGNALS) || 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 + + begin = Targ_FindNode (".BEGIN", TARG_NOCREATE); + + if (begin != NILGNODE) { + JobStart (begin, JOB_SPECIAL, (Job *)0); + while (nJobs) { + Job_CatchOutput(); +#ifndef RMT_WILL_WATCH + Job_CatchChildren (!usePipes); +#endif /* RMT_WILL_WATCH */ + } + } + postCommands = Targ_FindNode (".END", TARG_CREATE); +} + +/*- + *----------------------------------------------------------------------- + * 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 () +{ + 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 () +{ + 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); + } +} + +/*- + *----------------------------------------------------------------------- + * JobMatchShell -- + * Find a matching shell in 'shells' given its final component. + * + * Results: + * A pointer to the Shell structure. + * + * Side Effects: + * None. + * + *----------------------------------------------------------------------- + */ +static Shell * +JobMatchShell (name) + char *name; /* Final component of shell path */ +{ + register Shell *sh; /* Pointer into shells table */ + Shell *match; /* Longest-matching shell */ + register char *cp1, + *cp2; + char *eoname; + + eoname = name + strlen (name); + + match = (Shell *) NULL; + + for (sh = shells; sh->name != NULL; sh++) { + for (cp1 = eoname - strlen (sh->name), cp2 = sh->name; + *cp1 != '\0' && *cp1 == *cp2; + cp1++, cp2++) { + continue; + } + if (*cp1 != *cp2) { + continue; + } else if (match == (Shell *) NULL || + strlen (match->name) < strlen (sh->name)) { + match = sh; + } + } + return (match == (Shell *) NULL ? sh : match); +} + +/*- + *----------------------------------------------------------------------- + * Job_ParseShell -- + * Parse a shell specification and set up commandShell, shellPath + * and shellName appropriately. + * + * Results: + * FAILURE if the specification was incorrect. + * + * Side Effects: + * commandShell points to a Shell structure (either predefined or + * created from the shell spec), shellPath is the full path of the + * shell described by commandShell, while shellName is just the + * final component of shellPath. + * + * Notes: + * A shell specification consists of a .SHELL target, with dependency + * operator, followed by a series of blank-separated words. Double + * quotes can be used to use blanks in words. A backslash escapes + * anything (most notably a double-quote and a space) and + * provides the functionality it does in C. Each word consists of + * keyword and value separated by an equal sign. There should be no + * unnecessary spaces in the word. The keywords are as follows: + * name Name of shell. + * path Location of shell. Overrides "name" if given + * quiet Command to turn off echoing. + * echo Command to turn echoing on + * filter Result of turning off echoing that shouldn't be + * printed. + * echoFlag Flag to turn echoing on at the start + * errFlag Flag to turn error checking on at the start + * hasErrCtl True if shell has error checking control + * check Command to turn on error checking if hasErrCtl + * is TRUE or template of command to echo a command + * for which error checking is off if hasErrCtl is + * FALSE. + * ignore Command to turn off error checking if hasErrCtl + * is TRUE or template of command to execute a + * command so as to ignore any errors it returns if + * hasErrCtl is FALSE. + * + *----------------------------------------------------------------------- + */ +ReturnStatus +Job_ParseShell (line) + char *line; /* The shell spec */ +{ + char **words; + int wordCount; + register char **argv; + register int argc; + char *path; + Shell newShell; + Boolean fullSpec = FALSE; + + while (isspace (*line)) { + line++; + } + words = brk_string (line, &wordCount); + + memset ((Address)&newShell, 0, sizeof(newShell)); + + /* + * Parse the specification by keyword + */ + for (path = (char *)NULL, argc = wordCount - 1, argv = words + 1; + argc != 0; + argc--, argv++) { + if (strncmp (*argv, "path=", 5) == 0) { + path = &argv[0][5]; + } else if (strncmp (*argv, "name=", 5) == 0) { + newShell.name = &argv[0][5]; + } else { + if (strncmp (*argv, "quiet=", 6) == 0) { + newShell.echoOff = &argv[0][6]; + } else if (strncmp (*argv, "echo=", 5) == 0) { + newShell.echoOn = &argv[0][5]; + } else if (strncmp (*argv, "filter=", 7) == 0) { + newShell.noPrint = &argv[0][7]; + newShell.noPLen = strlen(newShell.noPrint); + } else if (strncmp (*argv, "echoFlag=", 9) == 0) { + newShell.echo = &argv[0][9]; + } else if (strncmp (*argv, "errFlag=", 8) == 0) { + newShell.exit = &argv[0][8]; + } else if (strncmp (*argv, "hasErrCtl=", 10) == 0) { + char c = argv[0][10]; + newShell.hasErrCtl = !((c != 'Y') && (c != 'y') && + (c != 'T') && (c != 't')); + } else if (strncmp (*argv, "check=", 6) == 0) { + newShell.errCheck = &argv[0][6]; + } else if (strncmp (*argv, "ignore=", 7) == 0) { + newShell.ignErr = &argv[0][7]; + } else { + Parse_Error (PARSE_FATAL, "Unknown keyword \"%s\"", + *argv); + return (FAILURE); + } + fullSpec = TRUE; + } + } + + if (path == (char *)NULL) { + /* + * If no path was given, the user wants one of the pre-defined shells, + * yes? So we find the one s/he wants with the help of JobMatchShell + * and set things up the right way. shellPath will be set up by + * Job_Init. + */ + if (newShell.name == (char *)NULL) { + Parse_Error (PARSE_FATAL, "Neither path nor name specified"); + return (FAILURE); + } else { + commandShell = JobMatchShell (newShell.name); + shellName = newShell.name; + } + } else { + /* + * The user provided a path. If s/he gave nothing else (fullSpec is + * FALSE), try and find a matching shell in the ones we know of. + * Else we just take the specification at its word and copy it + * to a new location. In either case, we need to record the + * path the user gave for the shell. + */ + shellPath = path; + path = strrchr (path, '/'); + if (path == (char *)NULL) { + path = shellPath; + } else { + path += 1; + } + if (newShell.name != (char *)NULL) { + shellName = newShell.name; + } else { + shellName = path; + } + if (!fullSpec) { + commandShell = JobMatchShell (shellName); + } else { + commandShell = (Shell *) emalloc(sizeof(Shell)); + *commandShell = newShell; + } + } + + if (commandShell->echoOn && commandShell->echoOff) { + commandShell->hasEchoCtl = TRUE; + } + + if (!commandShell->hasErrCtl) { + if (commandShell->errCheck == (char *)NULL) { + commandShell->errCheck = ""; + } + if (commandShell->ignErr == (char *)NULL) { + commandShell->ignErr = "%s\n"; + } + } + + /* + * Do not free up the words themselves, since they might be in use by the + * shell specification... + */ + free (words); + return SUCCESS; +} + +/*- + *----------------------------------------------------------------------- + * 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 (runINTERRUPT) + 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 */ + GNode *interrupt; /* the node describing the .INTERRUPT target */ + struct stat sb; + + aborting = ABORT_INTERRUPT; + + (void)Lst_Open (jobs); + while ((ln = Lst_Next (jobs)) != NILLNODE) { + job = (Job *) Lst_Datum (ln); + + if (!Targ_Precious (job->node)) { + char *file = (job->node->path == (char *)NULL ? + job->node->name : + job->node->path); + if (!stat(file, &sb) && S_ISREG(sb.st_mode) && + unlink (file) == 0) { + Error ("*** %s removed", file); + } + } +#ifdef RMT_WANTS_SIGNALS + if (job->flags & JOB_REMOTE) { + /* + * If job is remote, let the Rmt module do the killing. + */ + if (!Rmt_Signal(job, SIGINT)) { + /* + * If couldn't kill the thing, finish it out now with an + * error code, since no exit report will come in likely. + */ + union wait status; + + status.w_status = 0; + status.w_retcode = 1; + JobFinish(job, status); + } + } else if (job->pid) { + KILL(job->pid, SIGINT); + } +#else + if (job->pid) { + KILL(job->pid, SIGINT); + } +#endif /* RMT_WANTS_SIGNALS */ + } + Lst_Close (jobs); + + if (runINTERRUPT && !touchFlag) { + interrupt = Targ_FindNode (".INTERRUPT", TARG_NOCREATE); + if (interrupt != NILGNODE) { + ignoreErrors = FALSE; + + JobStart (interrupt, JOB_IGNDOTS, (Job *)0); + while (nJobs) { + Job_CatchOutput(); +#ifndef RMT_WILL_WATCH + Job_CatchChildren (!usePipes); +#endif /* RMT_WILL_WATCH */ + } + } + } + (void) unlink (tfile); + 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 () +{ + if (postCommands != NILGNODE && !Lst_IsEmpty (postCommands->commands)) { + if (errors) { + Error ("Errors reported so .END ignored"); + } else { + JobStart (postCommands, JOB_SPECIAL | JOB_IGNDOTS, + (Job *)0); + + while (nJobs) { + Job_CatchOutput(); +#ifndef RMT_WILL_WATCH + Job_CatchChildren (!usePipes); +#endif /* RMT_WILL_WATCH */ + } + } + } + (void) unlink (tfile); + 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() +{ + aborting = ABORT_WAIT; + while (nJobs != 0) { + Job_CatchOutput(); +#ifndef RMT_WILL_WATCH + Job_CatchChildren(!usePipes); +#endif /* RMT_WILL_WATCH */ + } + aborting = 0; +} + +/*- + *----------------------------------------------------------------------- + * 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 () +{ + LstNode ln; /* element in job table */ + Job *job; /* the job descriptor in that element */ + int foo; + + aborting = ABORT_ERROR; + + if (nJobs) { + + (void)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. + */ +#ifdef RMT_WANTS_SIGNALS + if (job->flags & JOB_REMOTE) { + Rmt_Signal(job, SIGINT); + Rmt_Signal(job, SIGKILL); + } else { + KILL(job->pid, SIGINT); + KILL(job->pid, SIGKILL); + } +#else + KILL(job->pid, SIGINT); + KILL(job->pid, SIGKILL); +#endif /* RMT_WANTS_SIGNALS */ + } + } + + /* + * Catch as many children as want to report in at first, then give up + */ + while (wait3(&foo, WNOHANG, (struct rusage *)0) > 0) + continue; + (void) unlink (tfile); +} |
