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signal: check for pending signals before yield

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Matheus
2024-05-22 17:49:49 -03:00
parent 6bc3747856
commit a65e7fa8cc
4 changed files with 35 additions and 8 deletions
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kernel-src/sys/scheduler.c
+17 -1
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@@ -429,7 +429,23 @@ static void yield(context_t *context) {
thread_t *next = runqueuenext(sleeping ? 0x0fffffff : thread->priority);
if (sleeping && thread->shouldexit && (thread->flags & SCHED_THREAD_FLAGS_INTERRUPTIBLE)) {
bool gotsignal = false;
for (int i = 0; i < NSIG && thread->proc; ++i) {
void *action = thread->proc->signals.actions[i].address;
if (SIGNAL_GET(&thread->signals.urgent, i)) {
gotsignal = true;
break;
}
if (action == SIG_IGN || (action == SIG_DFL && signal_defaultactions[i] == SIG_ACTION_IGN) || SIGNAL_GET(&thread->signals.mask, i))
continue;
if (SIGNAL_GET(&thread->signals.pending, i) || SIGNAL_GET(&thread->proc->signals.pending, i)) {
gotsignal = true;
break;
}
}
if (sleeping && (thread->shouldexit || gotsignal) && (thread->flags & SCHED_THREAD_FLAGS_INTERRUPTIBLE)) {
sleeping = false;
next = NULL;
thread->flags &= ~(SCHED_THREAD_FLAGS_SLEEP | SCHED_THREAD_FLAGS_INTERRUPTIBLE);