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waitpid: fix deadlock

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Matheus
2026-05-23 16:57:22 -03:00
parent af5a46e8fc
commit d867dc0ad5
2 changed files with 5 additions and 5 deletions
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kernel-src/sys/syscalls/waitpid.c
+4 -4
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@@ -43,8 +43,6 @@ syscallret_t syscall_waitpid(context_t *context, pid_t pid, int *status, int opt
bool continued = false;
bool stopped = false;
bool zombie = false;
eventlistener_t listener;
EVENT_INITLISTENER(&listener);
for (;;) {
if (iterator == NULL) {
@@ -61,6 +59,8 @@ syscallret_t syscall_waitpid(context_t *context, pid_t pid, int *status, int opt
return ret;
}
eventlistener_t listener;
EVENT_INITLISTENER(&listener);
EVENT_ATTACH(&listener, &proc->child_exit_event);
MUTEX_RELEASE(&proc->mutex);
@@ -133,9 +133,9 @@ syscallret_t syscall_waitpid(context_t *context, pid_t pid, int *status, int opt
thread_t *freethread = threadlist;
threadlist = threadlist->procnext;
// wait until the thread can actually be unallocated
eventlistener_t listener;
EVENT_INITLISTENER(&listener);
for (;;) {
eventlistener_t listener;
EVENT_INITLISTENER(&listener);
EVENT_ATTACH(&listener, &iterator->thread_exit_event);
if (freethread->flags & THREAD_FLAGS_DEAD) {
EVENT_DETACHALL(&listener);