X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fcommon%2Fconsumer%2Fconsumer-timer.c;h=721f146e20fdff2a5d7cecd0e488008bd618269f;hb=f28f9e449e13d6a3495408e5329514fa5ca7150e;hp=60ed94083e543a4d082e6f4e700f1ca57662120a;hpb=873dda4e25e5199d434d322fb7d64697cd9868d3;p=lttng-tools.git

diff --git a/src/common/consumer/consumer-timer.c b/src/common/consumer/consumer-timer.c
index 60ed94083..721f146e2 100644
--- a/src/common/consumer/consumer-timer.c
+++ b/src/common/consumer/consumer-timer.c
@@ -72,6 +72,10 @@ static void setmask(sigset_t *mask)
 	if (ret) {
 		PERROR("sigaddset monitor");
 	}
+	ret = sigaddset(mask, LTTNG_CONSUMER_SIG_EXIT);
+	if (ret) {
+		PERROR("sigaddset exit");
+	}
 }
 
 static int channel_monitor_pipe = -1;
@@ -394,7 +398,7 @@ void consumer_timer_signal_thread_qs(unsigned int signr)
 		if (ret == -1) {
 			PERROR("sigpending");
 		}
-		if (!sigismember(&pending_set, LTTNG_CONSUMER_SIG_SWITCH)) {
+		if (!sigismember(&pending_set, signr)) {
 			break;
 		}
 		caa_cpu_relax();
@@ -629,7 +633,7 @@ int consumer_signal_init(void)
 
 static
 int sample_channel_positions(struct lttng_consumer_channel *channel,
-		uint64_t *_highest_use, uint64_t *_lowest_use,
+		uint64_t *_highest_use, uint64_t *_lowest_use, uint64_t *_total_consumed,
 		sample_positions_cb sample, get_consumed_cb get_consumed,
 		get_produced_cb get_produced)
 {
@@ -640,6 +644,8 @@ int sample_channel_positions(struct lttng_consumer_channel *channel,
 	uint64_t high = 0, low = UINT64_MAX;
 	struct lttng_ht *ht = consumer_data.stream_per_chan_id_ht;
 
+	*_total_consumed = 0;
+
 	rcu_read_lock();
 
 	cds_lfht_for_each_entry_duplicate(ht->ht,
@@ -677,6 +683,15 @@ int sample_channel_positions(struct lttng_consumer_channel *channel,
 		usage = produced - consumed;
 		high = (usage > high) ? usage : high;
 		low = (usage < low) ? usage : low;
+
+		/*
+		 * We don't use consumed here for 2 reasons:
+		 *  - output_written takes into account the padding written in the
+		 *    tracefiles when we stop the session;
+		 *  - the consumed position is not the accurate representation of what
+		 *    was extracted from a buffer in overwrite mode.
+		 */
+		*_total_consumed += stream->output_written;
 	next:
 		pthread_mutex_unlock(&stream->lock);
 	}
@@ -731,7 +746,7 @@ void monitor_timer(struct lttng_consumer_local_data *ctx,
 	}
 
 	ret = sample_channel_positions(channel, &msg.highest, &msg.lowest,
-			sample, get_consumed, get_produced);
+			&msg.total_consumed, sample, get_consumed, get_produced);
 	if (ret) {
 		return;
 	}
@@ -782,7 +797,7 @@ end:
 /*
  * This thread is the sighandler for signals LTTNG_CONSUMER_SIG_SWITCH,
  * LTTNG_CONSUMER_SIG_TEARDOWN, LTTNG_CONSUMER_SIG_LIVE, and
- * LTTNG_CONSUMER_SIG_MONITOR.
+ * LTTNG_CONSUMER_SIG_MONITOR, LTTNG_CONSUMER_SIG_EXIT.
  */
 void *consumer_timer_thread(void *data)
 {
@@ -836,6 +851,9 @@ void *consumer_timer_thread(void *data)
 
 			channel = info.si_value.sival_ptr;
 			monitor_timer(ctx, channel);
+		} else if (signr == LTTNG_CONSUMER_SIG_EXIT) {
+			assert(CMM_LOAD_SHARED(consumer_quit));
+			goto end;
 		} else {
 			ERR("Unexpected signal %d\n", info.si_signo);
 		}
@@ -844,10 +862,8 @@ void *consumer_timer_thread(void *data)
 error_testpoint:
 	/* Only reached in testpoint error */
 	health_error();
+end:
 	health_unregister(health_consumerd);
-
 	rcu_unregister_thread();
-
-	/* Never return */
 	return NULL;
 }