mirrors/Astral
1
0
Fork 0
mirror of https://github.com/Mathewnd/Astral.git synced 2026-10-27 20:58:22 +00:00
Code Issues Packages Projects Releases Wiki Activity

waitpid: use events instead of semaphores

Browse Source
This commit is contained in:
Matheus
2026-04-15 16:59:37 -03:00
parent 4c56604915
commit 41ed077298
4 changed files with 22 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel-src/sys/syscalls/waitpid.c
+14 -6
View File
@@ -11,7 +11,6 @@
#define WCONTINUED 8
#define KNOWN_FLAGS (WNOHANG | WSTOPPED | WCONTINUED | __WALL)
// TODO use events here
syscallret_t syscall_waitpid(context_t *context, pid_t pid, int *status, int options) {
syscallret_t ret = {
.ret = -1
@@ -44,6 +43,8 @@ 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) {
@@ -52,15 +53,22 @@ syscallret_t syscall_waitpid(context_t *context, pid_t pid, int *status, int opt
MUTEX_RELEASE(&proc->mutex);
return ret;
}
MUTEX_RELEASE(&proc->mutex);
if ((options & WNOHANG) && semaphore_test(&proc->waitsem) == false) {
if (options & WNOHANG) {
MUTEX_RELEASE(&proc->mutex);
ret.errno = 0;
ret.ret = 0;
return ret;
} else if ((options & WNOHANG) == 0 && semaphore_wait(&proc->waitsem, true)) {
ret.errno = EINTR;
return ret;
}
EVENT_ATTACH(&listener, &proc->child_exit_event);
MUTEX_RELEASE(&proc->mutex);
ret.errno = EVENT_WAIT(&listener, 0);
EVENT_DETACHALL(&listener);
if (ret.errno)
return ret;
MUTEX_ACQUIRE(&proc->mutex);
prev = NULL;
iterator = proc->child;