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waitpid: use event instead of busy loop when waiting for threads to die

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Matheus
2026-04-16 22:41:43 -03:00
parent 4e3c41df39
commit 3dfb6b5a8c
4 changed files with 27 additions and 6 deletions
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kernel-src/sys/proc.c
+12 -3
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@@ -107,6 +107,7 @@ proc_t *proc_create() {
itimer_init(&proc->timer.profiling, profdpc, proc);
SPINLOCK_INIT(proc->threadlistlock);
EVENT_INITHEADER(&proc->child_exit_event);
EVENT_INITHEADER(&proc->thread_exit_event);
proc->fd = alloc(sizeof(fd_t) * 3);
if (proc->fd == NULL) {
@@ -173,10 +174,18 @@ void proc_stop_other_threads() {
threadlist = threadlist->procnext;
}
while (__atomic_load_n(&proc->runningthreadcount, __ATOMIC_SEQ_CST) > 1) {
arch_e9_puts("proc_stop_other_threads\n");
sched_yield();
eventlistener_t listener;
EVENT_INITLISTENER(&listener);
for (;;) {
EVENT_ATTACH(&listener, &proc->thread_exit_event);
if (__atomic_load_n(&proc->runningthreadcount, __ATOMIC_SEQ_CST) == 1)
break;
EVENT_WAIT(&listener, 0);
EVENT_DETACHALL(&listener);
}
EVENT_DETACHALL(&listener);
proc->nomorethreads = false;
}