X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=src%2Fcommon%2Fconsumer%2Fconsumer.cpp;h=4823d9b9c59aa6f9933d9e7552fe27fb48865cb6;hb=75f62e5383c6ea1f62fb488a94f4a8f98400db71;hp=5f3dc4e621ad303a3b605e134182ee8177448877;hpb=ff9309595a046512269302e98a3859bb3941f6ae;p=lttng-tools.git

diff --git a/src/common/consumer/consumer.cpp b/src/common/consumer/consumer.cpp
index 5f3dc4e62..4823d9b9c 100644
--- a/src/common/consumer/consumer.cpp
+++ b/src/common/consumer/consumer.cpp
@@ -20,6 +20,7 @@
 #include <common/dynamic-array.hpp>
 #include <common/index/ctf-index.hpp>
 #include <common/index/index.hpp>
+#include <common/io-hint.hpp>
 #include <common/kernel-consumer/kernel-consumer.hpp>
 #include <common/kernel-ctl/kernel-ctl.hpp>
 #include <common/relayd/relayd.hpp>
@@ -34,6 +35,7 @@
 #include <common/utils.hpp>
 
 #include <bin/lttng-consumerd/health-consumerd.hpp>
+#include <fcntl.h>
 #include <inttypes.h>
 #include <poll.h>
 #include <pthread.h>
@@ -460,6 +462,8 @@ static void update_endpoint_status_by_netidx(uint64_t net_seq_idx,
 	cds_lfht_for_each_entry (metadata_ht->ht, &iter.iter, stream, node.node) {
 		if (stream->net_seq_idx == net_seq_idx) {
 			uatomic_set(&stream->endpoint_status, status);
+			lttng_wait_queue_wake_all(&stream->chan->metadata_pushed_wait_queue);
+
 			DBG("Delete flag set to metadata stream %d", stream->wait_fd);
 		}
 	}
@@ -1031,8 +1035,9 @@ struct lttng_consumer_channel *consumer_allocate_channel(uint64_t key,
 	channel->monitor = monitor;
 	channel->live_timer_interval = live_timer_interval;
 	channel->is_live = is_in_live_session;
-	pthread_mutex_init(&channel->lock, nullptr);
-	pthread_mutex_init(&channel->timer_lock, nullptr);
+	pthread_mutex_init(&channel->lock, NULL);
+	pthread_mutex_init(&channel->timer_lock, NULL);
+	lttng_wait_queue_init(&channel->metadata_pushed_wait_queue);
 
 	switch (output) {
 	case LTTNG_EVENT_SPLICE:
@@ -1336,7 +1341,6 @@ void lttng_consumer_should_exit(struct lttng_consumer_local_data *ctx)
  */
 static void lttng_consumer_sync_trace_file(struct lttng_consumer_stream *stream, off_t orig_offset)
 {
-	int ret;
 	int outfd = stream->out_fd;
 
 	/*
@@ -1348,31 +1352,8 @@ static void lttng_consumer_sync_trace_file(struct lttng_consumer_stream *stream,
 	if (orig_offset < stream->max_sb_size) {
 		return;
 	}
-	lttng_sync_file_range(outfd,
-			      orig_offset - stream->max_sb_size,
-			      stream->max_sb_size,
-			      SYNC_FILE_RANGE_WAIT_BEFORE | SYNC_FILE_RANGE_WRITE |
-				      SYNC_FILE_RANGE_WAIT_AFTER);
-	/*
-	 * Give hints to the kernel about how we access the file:
-	 * POSIX_FADV_DONTNEED : we won't re-access data in a near future after
-	 * we write it.
-	 *
-	 * We need to call fadvise again after the file grows because the
-	 * kernel does not seem to apply fadvise to non-existing parts of the
-	 * file.
-	 *
-	 * Call fadvise _after_ having waited for the page writeback to
-	 * complete because the dirty page writeback semantic is not well
-	 * defined. So it can be expected to lead to lower throughput in
-	 * streaming.
-	 */
-	ret = posix_fadvise(
-		outfd, orig_offset - stream->max_sb_size, stream->max_sb_size, POSIX_FADV_DONTNEED);
-	if (ret && ret != -ENOSYS) {
-		errno = ret;
-		PERROR("posix_fadvise on fd %i", outfd);
-	}
+	lttng::io::hint_flush_range_dont_need_sync(
+		outfd, orig_offset - stream->max_sb_size, stream->max_sb_size);
 }
 
 /*
@@ -1733,8 +1714,7 @@ ssize_t lttng_consumer_on_read_subbuffer_mmap(struct lttng_consumer_stream *stre
 	/* This call is useless on a socket so better save a syscall. */
 	if (!relayd) {
 		/* This won't block, but will start writeout asynchronously */
-		lttng_sync_file_range(
-			outfd, stream->out_fd_offset, write_len, SYNC_FILE_RANGE_WRITE);
+		lttng::io::hint_flush_range_async(outfd, stream->out_fd_offset, write_len);
 		stream->out_fd_offset += write_len;
 		lttng_consumer_sync_trace_file(stream, orig_offset);
 	}
@@ -1933,8 +1913,7 @@ ssize_t lttng_consumer_on_read_subbuffer_splice(struct lttng_consumer_local_data
 		/* This call is useless on a socket so better save a syscall. */
 		if (!relayd) {
 			/* This won't block, but will start writeout asynchronously */
-			lttng_sync_file_range(
-				outfd, stream->out_fd_offset, ret_splice, SYNC_FILE_RANGE_WRITE);
+			lttng::io::hint_flush_range_async(outfd, stream->out_fd_offset, ret_splice);
 			stream->out_fd_offset += ret_splice;
 		}
 		stream->output_written += ret_splice;
@@ -2154,6 +2133,7 @@ void consumer_del_metadata_stream(struct lttng_consumer_stream *stream, struct l
 	 * pointer value.
 	 */
 	channel->metadata_stream = nullptr;
+	lttng_wait_queue_wake_all(&channel->metadata_pushed_wait_queue);
 
 	if (channel->metadata_cache) {
 		pthread_mutex_unlock(&channel->metadata_cache->lock);