CeDOS - Commit dd756f50

kernel: sched: Add return value to process_wait Signed-off-by: Celina Sophie Kalus <hello@celinakalus.de>
Celina Sophie Kalus
hello@celinakalus.de
Fri, 25 Jul 2025 19:26:26 +0200
2 files changed, 19 insertions(+), 17 deletions(-)
M kernel/sched/sched.c → kernel/sched/sched.c 
@@ -275,15 +275,17 @@ crit_exit();
     return success;
 }
 
-void sched_wait(PROCESS_ID pid) {
-    assert(pid != current_pid);
+int sched_wait(PROCESS_ID pid) {
+	assert(pid != current_pid);
 
-    while (1) {
-        PROCESS *p = get_process(pid);
-        if (p == NULL || p->state == PSTATE_TERMINATED) { break; }
+	while (1) {
+		PROCESS *p = get_process(pid);
+		if (p == NULL || p->state == PSTATE_TERMINATED) { break; }
 
-        sched_yield();    
-    }
+		sched_yield();
+	}
+
+	return 0;
 }
 
 int sched_start(void) {
M kernel/sched/sched.h → kernel/sched/sched.h 
@@ -17,16 +17,16 @@ /*!
  * Structure of the process stack when the scheduler is executed.
  */
 typedef struct {
-    uint32_t edi; 
-    uint32_t esi; 
-    uint32_t ebp; 
-    uint32_t esp; 
+    uint32_t edi;
+    uint32_t esi;
+    uint32_t ebp;
+    uint32_t esp;
     uint32_t edx;
-    uint32_t ecx; 
-    uint32_t ebx; 
-    uint32_t eax; 
+    uint32_t ecx;
+    uint32_t ebx;
+    uint32_t eax;
     uint32_t eip;
-    uint32_t cs; 
+    uint32_t cs;
     uint32_t eflags;
 }__attribute__((packed)) SCHED_FRAME;
 

@@ -94,10 +94,10 @@ /*!
  * Wait for a process to terminate.
  * \param pid Process ID of the process to wait for.
  */
-void sched_wait(PROCESS_ID pid);
+int sched_wait(PROCESS_ID pid);
 
 /*!
  * The scheduler.
  */
 void sched_interrupt_c(SCHED_FRAME * volatile frame, uint32_t volatile ebp);
-#endif+#endif