static Job *
prepare_job(GNode *gn, int flags)
{
bool cmdsOK; /* true if the nodes commands were all right */
bool noExec; /* Set true if we decide not to run the job */
/*
* Check the commands now so any attributes from .DEFAULT have a chance
* to migrate to the node
*/
cmdsOK = Job_CheckCommands(gn);
expand_commands(gn);
if ((gn->type & OP_MAKE) || (!noExecute && !touchFlag)) {
/*
* We're serious here, but if the commands were bogus, we're
* also dead...
*/
if (!cmdsOK)
job_failure(gn, Punt);
if (Lst_IsEmpty(&gn->commands))
noExec = true;
else
noExec = false;
} else if (noExecute) {
if (!cmdsOK || Lst_IsEmpty(&gn->commands))
noExec = true;
else
noExec = false;
} else {
/*
* 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);
noExec = true;
}
/*
* If we're not supposed to execute a shell, don't.
*/
if (noExec) {
/*
* 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 && !aborting) {
gn->built_status = MADE;
Make_Update(gn);
}
return NULL;
} else {
Job *job; /* new job descriptor */
job = emalloc(sizeof(Job));
if (job == NULL)
Punt("JobStart out of memory");
job->node = gn;
/*
* 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 = flags;
if (gn->type & OP_CHEAP)
return job;
if ((gn->type & OP_EXPENSIVE) ||
expensive_commands(&gn->expanded))
job->flags |= JOB_IS_EXPENSIVE;
return job;
}
}
static bool
try_to_make_node(GNode *gn)
{
if (DEBUG(MAKE))
printf("Examining %s...", gn->name);
if (gn->unmade != 0) {
if (DEBUG(MAKE))
printf(" Requeuing (%d)\n", gn->unmade);
add_targets_to_make(&gn->children);
Array_Push(&toBeMade, gn);
return false;
}
if (has_been_built(gn)) {
if (DEBUG(MAKE))
printf(" already made\n");
return false;
}
if (has_unmade_predecessor(gn)) {
if (DEBUG(MAKE))
printf(" Dropping for now\n");
return false;
}
/* SIB: this is where there should be a siblings loop */
Suff_FindDeps(gn);
if (gn->unmade != 0) {
if (DEBUG(MAKE))
printf(" Requeuing (after deps: %d)\n", gn->unmade);
add_targets_to_make(&gn->children);
return false;
}
if (Make_OODate(gn)) {
/* SIB: if a sibling is getting built, I don't build it right now */
if (DEBUG(MAKE))
printf("out-of-date\n");
if (queryFlag)
return true;
/* SIB: this is where commands should get prepared */
Make_DoAllVar(gn);
/* SIB: this is where I should make the gn as `being built */
gn->build_lock = true;
Job_Make(gn);
} else {
if (DEBUG(MAKE))
printf("up-to-date\n");
gn->built_status = UPTODATE;
if (gn->type & OP_JOIN) {
/*
* Even for an up-to-date .JOIN node, we need it
* to have its context variables so references
* to it get the correct value for .TARGET when
* building up the context variables of its
* parent(s)...
*/
Make_DoAllVar(gn);
}
Make_Update(gn);
}
return false;
}
static void
process_job_status(Job *job, int status)
{
int reason, code;
bool done;
debug_printf("Process %ld (%s) exited with status %d.\n",
(long)job->pid, job->node->name, status);
/* parse status */
if (WIFEXITED(status)) {
reason = JOB_EXITED;
code = WEXITSTATUS(status);
} else if (WIFSIGNALED(status)) {
reason = JOB_SIGNALED;
code = WTERMSIG(status);
} else {
/* can't happen, set things to be bad. */
reason = UNKNOWN;
code = status;
}
if ((reason == JOB_EXITED &&
code != 0 && !(job->node->type & OP_IGNORE)) ||
reason == JOB_SIGNALED) {
/*
* 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...
*/
close_job_pipes(job);
done = true;
} else if (reason == JOB_EXITED) {
/*
* Deal with ignored errors. 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 and the job exited non-zero.
*/
done = code != 0;
close_job_pipes(job);
} else {
/*
* No need to close things down or anything.
*/
done = false;
}
if (done || DEBUG(JOB)) {
if (reason == JOB_EXITED) {
debug_printf("Process %ld (%s) exited.\n",
(long)job->pid, job->node->name);
if (code != 0) {
banner(job, stdout);
(void)fprintf(stdout, "*** Error code %d %s\n",
code,
(job->node->type & OP_IGNORE) ?
"(ignored)" : "");
if (job->node->type & OP_IGNORE) {
reason = JOB_EXITED;
code = 0;
}
} else if (DEBUG(JOB)) {
(void)fprintf(stdout,
"*** %ld (%s) Completed successfully\n",
(long)job->pid, job->node->name);
}
} else {
banner(job, stdout);
(void)fprintf(stdout, "*** Signal %d\n", code);
}
(void)fflush(stdout);
}
done = true;
if (done &&
aborting != ABORT_ERROR &&
aborting != ABORT_INTERRUPT &&
reason == JOB_EXITED && code == 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->built_status = MADE;
Make_Update(job->node);
} else if (!(reason == JOB_EXITED && code == 0)) {
register_error(reason, code, job);
}
free(job);
if (errors && !keepgoing &&
aborting != ABORT_INTERRUPT)
aborting = ABORT_ERROR;
if (aborting == ABORT_ERROR && Job_Empty())
Finish(errors);
}