替换c层函数"gettimeofday()"为"clock_gettime()", 前者会依赖系统时间, 后者依赖单调递增时钟, 避免了系统时间变化带来的影响

swapi/swsignal.c

@@ -5,6 +5,8 @@
  * NOTE: 主要用于状态通知
  * HISTORY:
  * 1, [2010-12-17] created by NiuJiuRu
+ * 2, [2025-11-24] 替换"gettimeofday()"为"clock_gettime()", 前者会依赖系统
+ *                 时间, 后者依赖单调递增时钟, 避免了系统时间变化带来的影响
  ***********************************************************************/
 #include "swapi.h"
 #include "swmem.h"
@@ -37,8 +39,6 @@ void sw_signal_destroy(void *hSignal)
 int sw_signal_wait(void *hSignal, int timeout)
 {
 	sem_t *sem = (sem_t *)hSignal;
-	struct timeval tv = { 0 };
-	struct timespec ts = { 0 };
 	int ret;
 	
 	if(timeout < 0)
@@ -50,11 +50,15 @@ wait_p1:
 	}
 	else
 	{
-		gettimeofday(&tv, NULL);
-		ts.tv_sec = tv.tv_sec + timeout/1000;
-		ts.tv_nsec = tv.tv_usec*1000 + (timeout%1000)*1000*1000;
-		ts.tv_sec += ts.tv_nsec/(1000*1000*1000);
-		ts.tv_nsec %= (1000*1000*1000);
+		struct timespec ts, now;
+		clock_gettime(CLOCK_MONOTONIC, &now);
+		ts.tv_sec = now.tv_sec + timeout/1000;
+		ts.tv_nsec = now.tv_nsec + (timeout%1000)*1000*1000;
+		if(ts.tv_nsec >= (1000*1000*1000))
+		{
+		  ts.tv_sec += ts.tv_nsec/(1000*1000*1000);
+		  ts.tv_nsec %= (1000*1000*1000);
+		}
 wait_p2:
 		ret = sem_timedwait(sem, &ts);
 		if(ret < 0 && errno == EINTR) goto wait_p2;