Using CLOCK_MONOTONIC

src/downstream_api.c

@@ -36,7 +36,7 @@ int nrm_init(struct nrm_context *ctxt, const char *uuid)
     sleep(1);
     err = zmq_send(ctxt->socket, buf, strnlen(buf, 512), 0);
     assert(err > 0);
-    assert(!clock_gettime(CLOCK_REALTIME, &ctxt->time));
+    assert(!clock_gettime(CLOCK_MONOTONIC, &ctxt->time));
     ctxt->acc = 0;
     return 0;
 }
@@ -57,7 +57,7 @@ int nrm_send_progress(struct nrm_context *ctxt, unsigned long progress)
 {
     char buf[512];
     struct timespec now;
-    clock_gettime(CLOCK_REALTIME, &now);
+    clock_gettime(CLOCK_MONOTONIC, &now);
     long long int timediff = (now.tv_nsec - ctxt->time.tv_nsec) +
                  1e9* (now.tv_sec - ctxt->time.tv_sec);
     ctxt->acc += progress;
@@ -78,7 +78,7 @@ int nrm_send_phase_context(struct nrm_context *ctxt, unsigned int cpu, unsigned
 {
     char buf[512];
     struct timespec now;
-    clock_gettime(CLOCK_REALTIME, &now);
+    clock_gettime(CLOCK_MONOTONIC, &now);
     long long int timediff = (now.tv_nsec - ctxt->time.tv_nsec) +
                  1e9* (now.tv_sec - ctxt->time.tv_sec);
 

src/nrm.h

@@ -50,7 +50,7 @@ int nrm_send_phase_context(struct nrm_context *ctxt,
 inline long long int nrm_gettime(void)
 {
 	struct timespec now;
-	clock_gettime(CLOCK_REALTIME, &now);
+	clock_gettime(CLOCK_MONOTONIC, &now);
 	return ((now.tv_sec * 1e9) + now.tv_nsec);
 }