chore: simplify RCs

runtime/include/global_request_scheduler.h

@@ -14,12 +14,7 @@ struct global_request_scheduler_config {
 };
 
 
-void global_request_scheduler_initialize(struct global_request_scheduler_config *config);
-
-#define GLOBAL_REQUEST_SCHEDULER_REMOVE_OK     0
-#define GLOBAL_REQUEST_SCHEDULER_REMOVE_EMPTY  -1
-#define GLOBAL_REQUEST_SCHEDULER_REMOVE_NOLOCK -2
-
+void                    global_request_scheduler_initialize(struct global_request_scheduler_config *config);
 struct sandbox_request *global_request_scheduler_add(struct sandbox_request *);
 int                     global_request_scheduler_remove(struct sandbox_request **);
 uint64_t                global_request_scheduler_peek();

runtime/src/local_runqueue_list.c

@@ -47,7 +47,7 @@ local_runqueue_list_get_next()
 
 	// If our local runqueue is empty, try to pull and allocate a sandbox request from the global request scheduler
 	if (local_runqueue_is_empty()) {
-		if (global_request_scheduler_remove(&sandbox_request) != GLOBAL_REQUEST_SCHEDULER_REMOVE_OK) goto err;
+		if (global_request_scheduler_remove(&sandbox_request) < 0) goto err;
 
 		struct sandbox *sandbox = sandbox_allocate(sandbox_request);
 		if (!sandbox) goto sandbox_allocate_err;

runtime/src/local_runqueue_minheap.c

@@ -87,7 +87,7 @@ local_runqueue_minheap_get_next()
 		local_runqueue_minheap_add(sandbox);
 	} else if (sandbox_rc == -1) {
 		/* local runqueue was empty, try to pull a sandbox request and return NULL if we're unable to get one */
-		if (global_request_scheduler_remove(&sandbox_request) != GLOBAL_REQUEST_SCHEDULER_REMOVE_OK) goto err;
+		if (global_request_scheduler_remove(&sandbox_request) < 0) goto err;
 
 		/* Try to allocate a sandbox, returning the request on failure */
 		sandbox = sandbox_allocate(sandbox_request);