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mjit_worker.c: make sure copy job wait is unblocked

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by stop_worker(). Previously copy_cache_from_main_thread() might loop forever
even with stop_worker() is being called from ruby_cleanup().

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65299 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
k0kubun 2018-10-22 09:40:44 +00:00
parent 7fbf01348b
commit 821ff80c0c
1 changed files with 15 additions and 4 deletions
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19
mjit_worker.c
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@ -1171,19 +1171,29 @@ struct mjit_copy_job {
static void mjit_copy_job_handler(void *data);
/* We're lazily copying cache values from main thread because these cache values
could be different between ones on enqueue timing and ones on dequeue timing. */
static void
could be different between ones on enqueue timing and ones on dequeue timing.
Return TRUE if copy succeeds. */
static int
copy_cache_from_main_thread(struct mjit_copy_job *job)
{
int success_p = TRUE;
job->finish_p = FALSE;
rb_postponed_job_register(0, mjit_copy_job_handler, (void *)job);
if (!rb_postponed_job_register(0, mjit_copy_job_handler, (void *)job))
return FALSE;
CRITICAL_SECTION_START(3, "in MJIT copy job wait");
while (!job->finish_p) {
rb_native_cond_wait(&mjit_worker_wakeup, &mjit_engine_mutex);
verbose(3, "Getting wakeup from client");
if (worker_stopped) { /* for cond broadcast from stop_worker() */
success_p = FALSE;
break;
}
}
CRITICAL_SECTION_FINISH(3, "in MJIT copy job wait");
return success_p;
}
/* The function implementing a worker. It is executed in a separate
@ -1234,7 +1244,8 @@ mjit_worker(void)
/* Copy ISeq's inline caches values to avoid race condition. */
if (job.cc_entries != NULL || job.is_entries != NULL) {
copy_cache_from_main_thread(&job);
if (copy_cache_from_main_thread(&job) == FALSE)
continue; /* retry postponed_job failure, or stop worker */
}
/* JIT compile */