X-Git-Url: http://rtime.felk.cvut.cz/gitweb/can-benchmark.git/blobdiff_plain/37e17a5510486edb969a606c05c2c88f8c289a88..27c8ce5c4cd6ef751eb4c0914805aef74ce50f68:/latester/latester.c

diff --git a/latester/latester.c b/latester/latester.c
index d178e1e..a72558a 100644
--- a/latester/latester.c
+++ b/latester/latester.c
@@ -74,10 +74,12 @@ struct options opt = {
 
 struct {
 	unsigned enobufs;
+	unsigned overrun;
 } stats;
 
 int num_interfaces = 0;
 int count = 0;			/* Number of sent messages */
+unsigned msg_in_progress = 0;
 int completion_pipe[2];
 
 struct msg_info {
@@ -130,7 +132,7 @@ static inline struct msg_info *frame2info(struct can_frame *frame)
 		if (idx >= MAX_INFOS)
 			error(1, 0, "%s idx too high", __FUNCTION__);
 	} else {
-		
+
 		error(1, 0, "%s error", __FUNCTION__);
 	}
 	return &msg_infos[idx];
@@ -294,7 +296,7 @@ int init_ftrace()
 	char *debugfs;
 	char path[256];
 	FILE *f;
-	
+
 	debugfs = "/sys/kernel/debug";
 	if (debugfs) {
 		strcpy(path, debugfs);
@@ -375,7 +377,7 @@ int send_frame(int socket)
 	mi->length = frame.can_dlc;
 	get_tstamp(&mi->ts_sent);
 	mi->sent = frame;
-	
+
 	trace_on();
 	ret = write(socket, &frame, sizeof(frame));
 	trace_off(ret);
@@ -385,6 +387,22 @@ int send_frame(int socket)
 	return ret;
 }
 
+static inline send_and_check(int s)
+{
+	int ret;
+	ret = send_frame(s);
+	if (ret != sizeof(struct can_frame)) {
+/* 		if (ret == -1 && errno == ENOBUFS && opt.period_us == 0 && !opt.oneattime) { */
+/* 			stats.enobufs++; */
+/* 			/\* Ignore this error - pfifo_fast qeuue is full *\/ */
+/* 		} else */
+			error(1, errno, "send_frame (line %d)", __LINE__);
+	} else {
+		count++;
+		msg_in_progress++;
+	}
+}
+
 static inline void get_next_timeout(struct timespec *timeout)
 {
 	struct timespec now;
@@ -401,7 +419,10 @@ static inline void get_next_timeout(struct timespec *timeout)
 			last.tv_nsec -= 1000000000;
 			last.tv_sec++;
 		}
-		timespec_subtract(timeout, &last, &now);
+		if (timespec_subtract(timeout, &last, &now) /* is negative */) {
+			stats.overrun++;
+			memset(timeout, 0, sizeof(*timeout));
+		}
 	} else if (opt.timeout_ms != 0) {
 		timeout->tv_sec = opt.timeout_ms/1000;
 		timeout->tv_nsec = (opt.timeout_ms%1000)*1000000;
@@ -474,7 +495,7 @@ void process_final_rx(int s)
 	struct can_frame frame;
 	struct msg_info *mi;
 	int ret;
-	
+
 	receive(s, &frame, &ts_kern, &ts_user);
 	mi = frame2info(&frame);
 	mi->ts_rx_final_kern = ts_kern;
@@ -496,7 +517,6 @@ void *measure_thread(void *arg)
 	struct timespec timeout;
 	struct sockaddr_can addr;
 	sigset_t set;
-	unsigned msg_in_progress = 0;
 
 	MEMSET_ZERO(pfd);
 
@@ -538,26 +558,10 @@ void *measure_thread(void *arg)
 
 	set_sched_policy_and_prio(SCHED_FIFO, 40);
 
-#define SEND()								\
-	do {								\
-		ret = send_frame(pfd[0].fd);				\
-		if (ret != sizeof(struct can_frame)) {			\
-			if (ret == -1 && errno == ENOBUFS && opt.period_us == 0 && !opt.oneattime) { \
-				stats.enobufs++;			\
-				/* Ignore this error - pfifo_fast qeuue is full */ \
-			} else						\
-				error(1, errno, "send_frame (line %d)", __LINE__); \
-		}							\
-		else {							\
-			count++;					\
-			msg_in_progress++;				\
-		}							\
-	} while (0)
-
-	if (opt.oneattime) {
+#define SEND() send_and_check(pfd[0].fd)
+
+	if (opt.oneattime)
 		SEND();
-		count = 1;
-	}
 
 	while (!finish_flag &&
 	       (opt.count == 0 || count < opt.count || msg_in_progress != 0)) {
@@ -672,6 +676,11 @@ int parse_options(int argc, const char *argv[])
 	return 0;
 }
 
+void print_progress()
+{
+	printf("\rSent %5d, in progress %5d", count, msg_in_progress);
+	fflush(stdout);
+}
 
 int main(int argc, const char *argv[])
 {
@@ -701,7 +710,7 @@ int main(int argc, const char *argv[])
 		error(1, errno, "pipe fcntl");
 
 	init_ftrace();
-	
+
 	pthread_create(&thread, 0, measure_thread, NULL);
 
 	struct timespec next, now, diff;
@@ -728,16 +737,16 @@ int main(int argc, const char *argv[])
 
 		clock_gettime(CLOCK_MONOTONIC, &now);
 		if (timespec_subtract(&diff, &next, &now)) {
-			printf("\rMessage %d", count);
-			fflush(stdout);
-		        next.tv_nsec += 100000000;
+			print_progress();
+			next.tv_nsec += 100000000;
 			while (next.tv_nsec >= 1000000000) {
 				next.tv_nsec -= 1000000000;
 				next.tv_sec++;
 			}
 		}
 	}
-	printf("\rMessage %d\n", count);
+	print_progress();
+	printf("\n");
 
 	pthread_join(thread, NULL);
 
@@ -751,5 +760,10 @@ int main(int argc, const char *argv[])
 	if (opt.file)
 		fclose(opt.file);
 
+	if (stats.overrun)
+		printf("overrun=%d\n", stats.overrun);
+	if (stats.enobufs)
+		printf("enobufs=%d\n", stats.enobufs);
+
 	return 0;
 }