X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/a0655e5d30f3cdc73b1aaaa4825d8fae9f92ce4a..b60166b327a9108b07e3069fa6568a451529ffd9:/lunaix-os/kernel/ds/semaphore.c

diff --git a/lunaix-os/kernel/ds/semaphore.c b/lunaix-os/kernel/ds/semaphore.c
index 21d0e33..b02266c 100644
--- a/lunaix-os/kernel/ds/semaphore.c
+++ b/lunaix-os/kernel/ds/semaphore.c
@@ -1,17 +1,25 @@
 #include <lunaix/ds/semaphore.h>
+#include <lunaix/sched.h>
 
-void sem_init(struct sem_t *sem, unsigned int initial) {
+void
+sem_init(struct sem_t* sem, unsigned int initial)
+{
     sem->counter = ATOMIC_VAR_INIT(initial);
 }
 
-void sem_wait(struct sem_t *sem) {
+void
+sem_wait(struct sem_t* sem)
+{
     while (!atomic_load(&sem->counter)) {
-        // TODO: yield the cpu
+        // FIXME: better thing like wait queue
+        sched_pass();
     }
     atomic_fetch_sub(&sem->counter, 1);
 }
 
-void sem_post(struct sem_t *sem) {
+void
+sem_post(struct sem_t* sem)
+{
     atomic_fetch_add(&sem->counter, 1);
     // TODO: wake up a thread
 }
\ No newline at end of file