!959 优化memtrace接口性能

Merge pull request !959 from 卢韬/master

porting/linux/user/src/hook/memory_trace.c

@@ -7,9 +7,19 @@
 void memtrace(void* addr, size_t size, const char* tag, bool is_using)
 {
 #ifdef HOOK_ENABLE
-	volatile const struct MallocDispatchType* dispatch_table = get_current_dispatch_table();
+	volatile const struct MallocDispatchType* dispatch_table = (struct MallocDispatchType *)atomic_load_explicit(
+		&__musl_libc_globals.current_dispatch_table, memory_order_acquire);
 	if (__predict_false(dispatch_table != NULL)) {
-		dispatch_table->memtrace(addr, size, tag, is_using);
+		if (__get_memleak_hook_flag()) {
+			return;
+		}
+		if (!__get_global_hook_flag()) {
+			return;
+		}
+		else if (!__get_hook_flag()) {
+			return;
+		}
+		return dispatch_table->memtrace(addr, size, tag, is_using);
 	}
 #endif
     return;