使用clock_gettime计算包延迟，输出单位为ns

1 files changed, 11 insertions, 7 deletions

diff --git a/packet_io/packet_io.c b/packet_io/packet_io.c
index 9bee7c7..e2a2ea7 100644
--- a/packet_io/packet_io.c
+++ b/packet_io/packet_io.c
@@ -451,7 +451,11 @@ static int mesa_default_pkt_cb(const raw_pkt_t *p_raw_pkt, unsigned char dir, in
 	int ret = PASS;
 	long long before_call = 0, after_call, timecost;
 
-	before_call = sapp_get_cpu_cycle();
+	struct timespec start, end;
+
+	clock_gettime(CLOCK_MONOTONIC, &start);
+	//before_call = sapp_get_cpu_cycle();
+
 #if CYCLE_PKT_DUMP
 	cycle_pkt_dump(thread_num, p_raw_pkt);
 #endif
@@ -487,12 +491,12 @@ static int mesa_default_pkt_cb(const raw_pkt_t *p_raw_pkt, unsigned char dir, in
 		}
 	}
 
-	after_call = sapp_get_cpu_cycle();
-	if(after_call > before_call){ //cross second
-		timecost = after_call - before_call;
-		timestamp_region_update(thread_num,  timecost);
-		sapp_fs2_set_latency(thread_num,  timecost);
-	}
+	//after_call = sapp_get_cpu_cycle();
+	//timecost = after_call - before_call;
+	clock_gettime(CLOCK_MONOTONIC, &end);
+	timecost = (end.tv_sec - start.tv_sec)*1000000 + (end.tv_nsec - start.tv_nsec)/1000;
+	timestamp_region_update(thread_num,  timecost);
+	sapp_fs2_set_latency(thread_num,  timecost);
 		
 #if DEBUG
 	if(unlikely(g_timestamp_record_sw)){