/*
- * Copyright (C) 2013 - Julien Desfossez <jdesfossez@efficios.com>
- * David Goulet <dgoulet@efficios.com>
- * 2015 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (C) 2013 Julien Desfossez <jdesfossez@efficios.com>
+ * Copyright (C) 2013 David Goulet <dgoulet@efficios.com>
+ * Copyright (C) 2015 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2 only,
- * as published by the Free Software Foundation.
+ * SPDX-License-Identifier: GPL-2.0-only
*
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#define _LGPL_SOURCE
+#include <fcntl.h>
#include <getopt.h>
#include <grp.h>
+#include <inttypes.h>
#include <limits.h>
#include <pthread.h>
#include <signal.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
-#include <inttypes.h>
+#include <unistd.h>
#include <urcu/futex.h>
-#include <urcu/uatomic.h>
#include <urcu/rculist.h>
-#include <unistd.h>
-#include <fcntl.h>
+#include <urcu/uatomic.h>
-#include <lttng/lttng.h>
#include <common/common.h>
+#include <common/compat/endian.h>
#include <common/compat/poll.h>
#include <common/compat/socket.h>
-#include <common/compat/endian.h>
#include <common/defaults.h>
+#include <common/fd-tracker/utils.h>
+#include <common/fs-handle.h>
#include <common/futex.h>
#include <common/index/index.h>
-#include <common/sessiond-comm/sessiond-comm.h>
#include <common/sessiond-comm/inet.h>
#include <common/sessiond-comm/relayd.h>
+#include <common/sessiond-comm/sessiond-comm.h>
#include <common/uri.h>
#include <common/utils.h>
+#include <lttng/lttng.h>
#include "cmd.h"
+#include "connection.h"
+#include "ctf-trace.h"
+#include "health-relayd.h"
#include "live.h"
#include "lttng-relayd.h"
-#include "utils.h"
-#include "health-relayd.h"
-#include "testpoint.h"
-#include "viewer-stream.h"
-#include "stream.h"
#include "session.h"
-#include "ctf-trace.h"
-#include "connection.h"
+#include "stream.h"
+#include "testpoint.h"
+#include "utils.h"
#include "viewer-session.h"
+#include "viewer-stream.h"
#define SESSION_BUF_DEFAULT_COUNT 16
*/
static
ssize_t send_viewer_streams(struct lttcomm_sock *sock,
- struct relay_session *session, unsigned int ignore_sent_flag)
+ uint64_t session_id, unsigned int ignore_sent_flag)
{
ssize_t ret;
- struct lttng_viewer_stream send_stream;
struct lttng_ht_iter iter;
struct relay_viewer_stream *vstream;
cds_lfht_for_each_entry(viewer_streams_ht->ht, &iter.iter, vstream,
stream_n.node) {
struct ctf_trace *ctf_trace;
+ struct lttng_viewer_stream send_stream = {};
health_code_update();
pthread_mutex_lock(&vstream->stream->lock);
/* Ignore if not the same session. */
- if (vstream->stream->trace->session->id != session->id ||
+ if (vstream->stream->trace->session->id != session_id ||
(!ignore_sent_flag && vstream->sent_flag)) {
pthread_mutex_unlock(&vstream->stream->lock);
viewer_stream_put(vstream);
send_stream.ctf_trace_id = htobe64(ctf_trace->id);
send_stream.metadata_flag = htobe32(
vstream->stream->is_metadata);
- strncpy(send_stream.path_name, vstream->path_name,
- sizeof(send_stream.path_name));
- strncpy(send_stream.channel_name, vstream->channel_name,
- sizeof(send_stream.channel_name));
+ if (lttng_strncpy(send_stream.path_name, vstream->path_name,
+ sizeof(send_stream.path_name))) {
+ pthread_mutex_unlock(&vstream->stream->lock);
+ viewer_stream_put(vstream);
+ ret = -1; /* Error. */
+ goto end_unlock;
+ }
+ if (lttng_strncpy(send_stream.channel_name,
+ vstream->channel_name,
+ sizeof(send_stream.channel_name))) {
+ pthread_mutex_unlock(&vstream->stream->lock);
+ viewer_stream_put(vstream);
+ ret = -1; /* Error. */
+ goto end_unlock;
+ }
DBG("Sending stream %" PRIu64 " to viewer",
vstream->stream->stream_handle);
* viewer stream of the session, the number of unsent stream and the number of
* stream created. Those counters can be NULL and thus will be ignored.
*
+ * session must be locked to ensure that we see either none or all initial
+ * streams for a session, but no intermediate state..
+ *
* Return 0 on success or else a negative value.
*/
-static
-int make_viewer_streams(struct relay_session *session,
- enum lttng_viewer_seek seek_t, uint32_t *nb_total, uint32_t *nb_unsent,
- uint32_t *nb_created, bool *closed)
+static int make_viewer_streams(struct relay_session *session,
+ struct lttng_trace_chunk *viewer_trace_chunk,
+ enum lttng_viewer_seek seek_t,
+ uint32_t *nb_total,
+ uint32_t *nb_unsent,
+ uint32_t *nb_created,
+ bool *closed)
{
int ret;
struct lttng_ht_iter iter;
struct ctf_trace *ctf_trace;
assert(session);
+ ASSERT_LOCKED(session->lock);
- /*
- * Hold the session lock to ensure that we see either none or
- * all initial streams for a session, but no intermediate state.
- */
- pthread_mutex_lock(&session->lock);
+ if (!viewer_trace_chunk) {
+ ERR("Internal error: viewer session associated with session \"%s\" has a NULL trace chunk",
+ session->session_name);
+ ret = -1;
+ goto error;
+ }
if (session->connection_closed) {
*closed = true;
rcu_read_lock();
cds_lfht_for_each_entry(session->ctf_traces_ht->ht, &iter.iter, ctf_trace,
node.node) {
+ bool trace_has_metadata_stream = false;
struct relay_stream *stream;
health_code_update();
continue;
}
+ /*
+ * Iterate over all the streams of the trace to see if we have a
+ * metadata stream.
+ */
+ cds_list_for_each_entry_rcu(
+ stream, &ctf_trace->stream_list, stream_node)
+ {
+ if (stream->is_metadata) {
+ trace_has_metadata_stream = true;
+ break;
+ }
+ }
+
+ /*
+ * If there is no metadata stream in this trace at the moment
+ * and we never sent one to the viewer, skip the trace. We
+ * accept that the viewer will not see this trace at all.
+ */
+ if (!trace_has_metadata_stream &&
+ !ctf_trace->metadata_stream_sent_to_viewer) {
+ ctf_trace_put(ctf_trace);
+ continue;
+ }
+
cds_list_for_each_entry_rcu(stream, &ctf_trace->stream_list, stream_node) {
struct relay_viewer_stream *vstream;
}
vstream = viewer_stream_get_by_id(stream->stream_handle);
if (!vstream) {
- vstream = viewer_stream_create(stream, seek_t);
+ /*
+ * Save that we sent the metadata stream to the
+ * viewer. So that we know what trace the viewer
+ * is aware of.
+ */
+ if (stream->is_metadata) {
+ ctf_trace->metadata_stream_sent_to_viewer =
+ true;
+ }
+ vstream = viewer_stream_create(stream,
+ viewer_trace_chunk, seek_t);
if (!vstream) {
ret = -1;
ctf_trace_put(ctf_trace);
* Ensure a self-reference is preserved even
* after we have put our local reference.
*/
- viewer_stream_get(vstream);
+ if (!viewer_stream_get(vstream)) {
+ ERR("Unable to get self-reference on viewer stream, logic error.");
+ abort();
+ }
} else {
if (!vstream->sent_flag && nb_unsent) {
/* Update number of unsent stream counter. */
}
} else {
if (!stream->closed ||
- !(((int64_t) (stream->prev_seq - stream->last_net_seq_num)) >= 0)) {
+ !(((int64_t) (stream->prev_data_seq - stream->last_net_seq_num)) >= 0)) {
(*nb_total)++;
}
error_unlock:
rcu_read_unlock();
- pthread_mutex_unlock(&session->lock);
+error:
return ret;
}
* Create a poll set with O_CLOEXEC and add the thread quit pipe to the set.
*/
static
-int create_thread_poll_set(struct lttng_poll_event *events, int size)
+int create_named_thread_poll_set(struct lttng_poll_event *events,
+ int size, const char *name)
{
int ret;
goto error;
}
- ret = lttng_poll_create(events, size, LTTNG_CLOEXEC);
- if (ret < 0) {
+ ret = fd_tracker_util_poll_create(the_fd_tracker,
+ name, events, 1, LTTNG_CLOEXEC);
+ if (ret) {
+ PERROR("Failed to create \"%s\" poll file descriptor", name);
goto error;
}
return 0;
}
+static
+int create_sock(void *data, int *out_fd)
+{
+ int ret;
+ struct lttcomm_sock *sock = data;
+
+ ret = lttcomm_create_sock(sock);
+ if (ret < 0) {
+ goto end;
+ }
+
+ *out_fd = sock->fd;
+end:
+ return ret;
+}
+
+static
+int close_sock(void *data, int *in_fd)
+{
+ struct lttcomm_sock *sock = data;
+
+ return sock->ops->close(sock);
+}
+
+static int accept_sock(void *data, int *out_fd)
+{
+ int ret = 0;
+ /* Socks is an array of in_sock, out_sock. */
+ struct lttcomm_sock **socks = data;
+ struct lttcomm_sock *in_sock = socks[0];
+
+ socks[1] = in_sock->ops->accept(in_sock);
+ if (!socks[1]) {
+ ret = -1;
+ goto end;
+ }
+ *out_fd = socks[1]->fd;
+end:
+ return ret;
+}
+
+static
+struct lttcomm_sock *accept_live_sock(struct lttcomm_sock *listening_sock,
+ const char *name)
+{
+ int out_fd, ret;
+ struct lttcomm_sock *socks[2] = { listening_sock, NULL };
+ struct lttcomm_sock *new_sock = NULL;
+
+ ret = fd_tracker_open_unsuspendable_fd(the_fd_tracker, &out_fd,
+ (const char **) &name, 1, accept_sock, &socks);
+ if (ret) {
+ goto end;
+ }
+ new_sock = socks[1];
+ DBG("%s accepted, socket %d", name, new_sock->fd);
+end:
+ return new_sock;
+}
+
/*
* Create and init socket from uri.
*/
static
-struct lttcomm_sock *init_socket(struct lttng_uri *uri)
+struct lttcomm_sock *init_socket(struct lttng_uri *uri, const char *name)
{
- int ret;
+ int ret, sock_fd;
struct lttcomm_sock *sock = NULL;
+ char uri_str[LTTNG_PATH_MAX];
+ char *formated_name = NULL;
sock = lttcomm_alloc_sock_from_uri(uri);
if (sock == NULL) {
goto error;
}
- ret = lttcomm_create_sock(sock);
- if (ret < 0) {
+ /*
+ * Don't fail to create the socket if the name can't be built as it is
+ * only used for debugging purposes.
+ */
+ ret = uri_to_str_url(uri, uri_str, sizeof(uri_str));
+ uri_str[sizeof(uri_str) - 1] = '\0';
+ if (ret >= 0) {
+ ret = asprintf(&formated_name, "%s socket @ %s", name,
+ uri_str);
+ if (ret < 0) {
+ formated_name = NULL;
+ }
+ }
+
+ ret = fd_tracker_open_unsuspendable_fd(the_fd_tracker, &sock_fd,
+ (const char **) (formated_name ? &formated_name : NULL),
+ 1, create_sock, sock);
+ if (ret) {
+ PERROR("Failed to create \"%s\" socket",
+ formated_name ?: "Unknown");
goto error;
}
- DBG("Listening on sock %d for live", sock->fd);
+ DBG("Listening on %s socket %d", name, sock->fd);
ret = sock->ops->bind(sock);
if (ret < 0) {
+ PERROR("Failed to bind lttng-live socket");
goto error;
}
}
+ free(formated_name);
return sock;
error:
if (sock) {
lttcomm_destroy_sock(sock);
}
+ free(formated_name);
return NULL;
}
DBG("[thread] Relay live listener started");
+ rcu_register_thread();
health_register(health_relayd, HEALTH_RELAYD_TYPE_LIVE_LISTENER);
health_code_update();
- live_control_sock = init_socket(live_uri);
+ live_control_sock = init_socket(live_uri, "Live listener");
if (!live_control_sock) {
goto error_sock_control;
}
/* Pass 2 as size here for the thread quit pipe and control sockets. */
- ret = create_thread_poll_set(&events, 2);
+ ret = create_named_thread_poll_set(&events, 2,
+ "Live listener thread epoll");
if (ret < 0) {
goto error_create_poll;
}
revents = LTTNG_POLL_GETEV(&events, i);
pollfd = LTTNG_POLL_GETFD(&events, i);
- if (!revents) {
- /* No activity for this FD (poll implementation). */
- continue;
- }
-
/* Thread quit pipe has been closed. Killing thread. */
ret = check_thread_quit_pipe(pollfd, revents);
if (ret) {
struct relay_connection *new_conn;
struct lttcomm_sock *newsock;
- newsock = live_control_sock->ops->accept(live_control_sock);
+ newsock = accept_live_sock(live_control_sock,
+ "Live socket to client");
if (!newsock) {
PERROR("accepting control sock");
goto error;
error:
error_poll_add:
error_testpoint:
- lttng_poll_clean(&events);
+ (void) fd_tracker_util_poll_clean(the_fd_tracker, &events);
error_create_poll:
if (live_control_sock->fd >= 0) {
- ret = live_control_sock->ops->close(live_control_sock);
+ int sock_fd = live_control_sock->fd;
+
+ ret = fd_tracker_close_unsuspendable_fd(the_fd_tracker,
+ &sock_fd, 1, close_sock,
+ live_control_sock);
if (ret) {
PERROR("close");
}
+ live_control_sock->fd = -1;
}
lttcomm_destroy_sock(live_control_sock);
error_sock_control:
DBG("Live viewer listener thread exited with error");
}
health_unregister(health_relayd);
+ rcu_unregister_thread();
DBG("Live viewer listener thread cleanup complete");
if (lttng_relay_stop_threads()) {
ERR("Error stopping threads");
health_code_update();
- while (!CMM_LOAD_SHARED(live_dispatch_thread_exit)) {
+ for (;;) {
health_code_update();
/* Atomically prepare the queue futex */
futex_nto1_prepare(&viewer_conn_queue.futex);
+ if (CMM_LOAD_SHARED(live_dispatch_thread_exit)) {
+ break;
+ }
+
do {
health_code_update();
static
int viewer_list_sessions(struct relay_connection *conn)
{
- int ret;
+ int ret = 0;
struct lttng_viewer_list_sessions session_list;
struct lttng_ht_iter iter;
struct relay_session *session;
health_code_update();
+ pthread_mutex_lock(&session->lock);
+ if (session->connection_closed) {
+ /* Skip closed session */
+ goto next_session;
+ }
+ if (!session->current_trace_chunk) {
+ /*
+ * Skip un-attachable session. It is either
+ * being destroyed or has not had a trace
+ * chunk created against it yet.
+ */
+ goto next_session;
+ }
+
if (count >= buf_count) {
struct lttng_viewer_session *newbuf;
uint32_t new_buf_count = buf_count << 1;
new_buf_count * sizeof(*send_session_buf));
if (!newbuf) {
ret = -1;
- rcu_read_unlock();
- goto end_free;
+ goto break_loop;
}
send_session_buf = newbuf;
buf_count = new_buf_count;
session->session_name,
sizeof(send_session->session_name))) {
ret = -1;
- rcu_read_unlock();
- goto end_free;
+ goto break_loop;
}
if (lttng_strncpy(send_session->hostname, session->hostname,
sizeof(send_session->hostname))) {
ret = -1;
- rcu_read_unlock();
- goto end_free;
+ goto break_loop;
}
send_session->id = htobe64(session->id);
send_session->live_timer = htobe32(session->live_timer);
}
send_session->streams = htobe32(session->stream_count);
count++;
+ next_session:
+ pthread_mutex_unlock(&session->lock);
+ continue;
+ break_loop:
+ pthread_mutex_unlock(&session->lock);
+ break;
}
rcu_read_unlock();
+ if (ret < 0) {
+ goto end_free;
+ }
session_list.sessions_count = htobe32(count);
uint32_t nb_created = 0, nb_unsent = 0, nb_streams = 0, nb_total = 0;
struct lttng_viewer_new_streams_request request;
struct lttng_viewer_new_streams_response response;
- struct relay_session *session;
+ struct relay_session *session = NULL;
uint64_t session_id;
bool closed = false;
}
if (!viewer_session_is_attached(conn->viewer_session, session)) {
- send_streams = 0;
response.status = htobe32(LTTNG_VIEWER_NEW_STREAMS_ERR);
goto send_reply;
}
- send_streams = 1;
- response.status = htobe32(LTTNG_VIEWER_NEW_STREAMS_OK);
-
- ret = make_viewer_streams(session, LTTNG_VIEWER_SEEK_LAST, &nb_total, &nb_unsent,
+ pthread_mutex_lock(&session->lock);
+ ret = make_viewer_streams(session,
+ conn->viewer_session->current_trace_chunk,
+ LTTNG_VIEWER_SEEK_LAST, &nb_total, &nb_unsent,
&nb_created, &closed);
if (ret < 0) {
- goto end_put_session;
+ goto error_unlock_session;
}
+ send_streams = 1;
+ response.status = htobe32(LTTNG_VIEWER_NEW_STREAMS_OK);
+
/* Only send back the newly created streams with the unsent ones. */
nb_streams = nb_created + nb_unsent;
response.streams_count = htobe32(nb_streams);
send_streams = 0;
response.streams_count = 0;
response.status = htobe32(LTTNG_VIEWER_NEW_STREAMS_HUP);
- goto send_reply;
+ goto send_reply_unlock;
}
+send_reply_unlock:
+ pthread_mutex_unlock(&session->lock);
send_reply:
health_code_update();
* streams that were not sent from that point will be sent to
* the viewer.
*/
- ret = send_viewer_streams(conn->sock, session, 0);
+ ret = send_viewer_streams(conn->sock, session_id, 0);
if (ret < 0) {
goto end_put_session;
}
}
error:
return ret;
+error_unlock_session:
+ pthread_mutex_unlock(&session->lock);
+ session_put(session);
+ return ret;
}
/*
struct lttng_viewer_attach_session_request request;
struct lttng_viewer_attach_session_response response;
struct relay_session *session = NULL;
+ enum lttng_viewer_attach_return_code viewer_attach_status;
bool closed = false;
+ uint64_t session_id;
assert(conn);
goto error;
}
+ session_id = be64toh(request.session_id);
health_code_update();
memset(&response, 0, sizeof(response));
goto send_reply;
}
- session = session_get_by_id(be64toh(request.session_id));
+ session = session_get_by_id(session_id);
if (!session) {
- DBG("Relay session %" PRIu64 " not found",
- be64toh(request.session_id));
+ DBG("Relay session %" PRIu64 " not found", session_id);
response.status = htobe32(LTTNG_VIEWER_ATTACH_UNK);
goto send_reply;
}
- DBG("Attach session ID %" PRIu64 " received",
- be64toh(request.session_id));
+ DBG("Attach session ID %" PRIu64 " received", session_id);
+ pthread_mutex_lock(&session->lock);
+ if (!session->current_trace_chunk) {
+ /*
+ * Session is either being destroyed or it never had a trace
+ * chunk created against it.
+ */
+ DBG("Session requested by live client has no current trace chunk, returning unknown session");
+ response.status = htobe32(LTTNG_VIEWER_ATTACH_UNK);
+ goto send_reply;
+ }
if (session->live_timer == 0) {
DBG("Not live session");
response.status = htobe32(LTTNG_VIEWER_ATTACH_NOT_LIVE);
}
send_streams = 1;
- ret = viewer_session_attach(conn->viewer_session, session);
- if (ret) {
- DBG("Already a viewer attached");
- response.status = htobe32(LTTNG_VIEWER_ATTACH_ALREADY);
+ viewer_attach_status = viewer_session_attach(conn->viewer_session,
+ session);
+ if (viewer_attach_status != LTTNG_VIEWER_ATTACH_OK) {
+ response.status = htobe32(viewer_attach_status);
goto send_reply;
}
goto send_reply;
}
- ret = make_viewer_streams(session, seek_type, &nb_streams, NULL,
- NULL, &closed);
+ ret = make_viewer_streams(session,
+ conn->viewer_session->current_trace_chunk, seek_type,
+ &nb_streams, NULL, NULL, &closed);
if (ret < 0) {
goto end_put_session;
}
- response.streams_count = htobe32(nb_streams);
+ pthread_mutex_unlock(&session->lock);
+ session_put(session);
+ session = NULL;
+ response.streams_count = htobe32(nb_streams);
/*
* If the session is closed when the viewer is attaching, it
* means some of the streams may have been concurrently removed,
if (closed) {
send_streams = 0;
response.streams_count = 0;
- response.status = htobe32(LTTNG_VIEWER_NEW_STREAMS_HUP);
+ response.status = htobe32(LTTNG_VIEWER_ATTACH_UNK);
goto send_reply;
}
}
/* Send stream and ignore the sent flag. */
- ret = send_viewer_streams(conn->sock, session, 1);
+ ret = send_viewer_streams(conn->sock, session_id, 1);
if (ret < 0) {
goto end_put_session;
}
end_put_session:
if (session) {
+ pthread_mutex_unlock(&session->lock);
session_put(session);
}
error:
/*
* Open the index file if needed for the given vstream.
*
- * If an index file is successfully opened, the vstream index_fd set with
- * it.
+ * If an index file is successfully opened, the vstream will set it as its
+ * current index file.
*
* Return 0 on success, a negative value on error (-ENOENT if not ready yet).
*
struct relay_stream *rstream)
{
int ret = 0;
+ const uint32_t connection_major = rstream->trace->session->major;
+ const uint32_t connection_minor = rstream->trace->session->minor;
+ enum lttng_trace_chunk_status chunk_status;
- if (vstream->index_fd) {
+ if (vstream->index_file) {
goto end;
}
ret = -ENOENT;
goto end;
}
- ret = index_open(vstream->path_name, vstream->channel_name,
- vstream->stream->tracefile_count,
- vstream->current_tracefile_id);
- if (ret >= 0) {
- vstream->index_fd = stream_fd_create(ret);
- if (!vstream->index_fd) {
- if (close(ret)) {
- PERROR("close");
- }
- ret = -1;
+ chunk_status = lttng_index_file_create_from_trace_chunk_read_only(
+ vstream->stream_file.trace_chunk, rstream->path_name,
+ rstream->channel_name, rstream->tracefile_size,
+ vstream->current_tracefile_id,
+ lttng_to_index_major(connection_major, connection_minor),
+ lttng_to_index_minor(connection_major, connection_minor),
+ true, &vstream->index_file);
+ if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) {
+ if (chunk_status == LTTNG_TRACE_CHUNK_STATUS_NO_FILE) {
+ ret = -ENOENT;
} else {
- ret = 0;
+ ret = -1;
}
- goto end;
}
end:
{
int ret;
- if (trace->session->connection_closed
+ DBG("Check index status: index_received_seqcount %" PRIu64 " "
+ "index_sent_seqcount %" PRIu64 " "
+ "for stream %" PRIu64,
+ rstream->index_received_seqcount,
+ vstream->index_sent_seqcount,
+ vstream->stream->stream_handle);
+ if ((trace->session->connection_closed || rstream->closed)
&& rstream->index_received_seqcount
== vstream->index_sent_seqcount) {
- /* Last index sent and session connection is closed. */
+ /*
+ * Last index sent and session connection or relay
+ * stream are closed.
+ */
index->status = htobe32(LTTNG_VIEWER_INDEX_HUP);
goto hup;
} else if (rstream->beacon_ts_end != -1ULL &&
+ (rstream->index_received_seqcount == 0 ||
+ (vstream->index_sent_seqcount != 0 &&
rstream->index_received_seqcount
- == vstream->index_sent_seqcount) {
+ <= vstream->index_sent_seqcount))) {
/*
* We've received a synchronization beacon and the last index
* available has been sent, the index for now is inactive.
* inform the client of a time interval during which we can
* guarantee that there are no events to read (and never will
* be).
+ *
+ * The sent seqcount can grow higher than receive seqcount on
+ * clear because the rotation performed by clear will push
+ * the index_sent_seqcount ahead (see
+ * viewer_stream_sync_tracefile_array_tail) and skip over
+ * packet sequence numbers.
*/
index->status = htobe32(LTTNG_VIEWER_INDEX_INACTIVE);
index->timestamp_end = htobe64(rstream->beacon_ts_end);
index->stream_id = htobe64(rstream->ctf_stream_id);
+ DBG("Check index status: inactive with beacon, for stream %" PRIu64,
+ vstream->stream->stream_handle);
goto index_ready;
- } else if (rstream->index_received_seqcount
- == vstream->index_sent_seqcount) {
+ } else if (rstream->index_received_seqcount == 0 ||
+ (vstream->index_sent_seqcount != 0 &&
+ rstream->index_received_seqcount
+ <= vstream->index_sent_seqcount)) {
/*
- * This checks whether received == sent seqcount. In
+ * This checks whether received <= sent seqcount. In
* this case, we have not received a beacon. Therefore,
* we can only ask the client to retry later.
+ *
+ * The sent seqcount can grow higher than receive seqcount on
+ * clear because the rotation performed by clear will push
+ * the index_sent_seqcount ahead (see
+ * viewer_stream_sync_tracefile_array_tail) and skip over
+ * packet sequence numbers.
*/
index->status = htobe32(LTTNG_VIEWER_INDEX_RETRY);
+ DBG("Check index status: retry for stream %" PRIu64,
+ vstream->stream->stream_handle);
goto index_ready;
} else if (!tracefile_array_seq_in_file(rstream->tfa,
vstream->current_tracefile_id,
DBG("Viewer stream %" PRIu64 " rotation",
vstream->stream->stream_handle);
ret = viewer_stream_rotate(vstream);
- if (ret < 0) {
- goto end;
- } else if (ret == 1) {
+ if (ret == 1) {
/* EOF across entire stream. */
index->status = htobe32(LTTNG_VIEWER_INDEX_HUP);
goto hup;
vstream->current_tracefile_id,
vstream->index_sent_seqcount)) {
index->status = htobe32(LTTNG_VIEWER_INDEX_RETRY);
+ DBG("Check index status: retry: "
+ "tracefile array sequence number %" PRIu64
+ " not in file for stream %" PRIu64,
+ vstream->index_sent_seqcount,
+ vstream->stream->stream_handle);
goto index_ready;
}
assert(tracefile_array_seq_in_file(rstream->tfa,
}
/* ret == 0 means successful so we continue. */
ret = 0;
-end:
return ret;
hup:
int viewer_get_next_index(struct relay_connection *conn)
{
int ret;
- ssize_t read_ret;
struct lttng_viewer_get_next_index request_index;
struct lttng_viewer_index viewer_index;
struct ctf_packet_index packet_index;
vstream = viewer_stream_get_by_id(be64toh(request_index.stream_id));
if (!vstream) {
DBG("Client requested index of unknown stream id %" PRIu64,
- be64toh(request_index.stream_id));
+ (uint64_t) be64toh(request_index.stream_id));
viewer_index.status = htobe32(LTTNG_VIEWER_INDEX_ERR);
goto send_reply;
}
goto send_reply;
}
- /* Try to open an index if one is needed for that stream. */
- ret = try_open_index(vstream, rstream);
- if (ret < 0) {
- if (ret == -ENOENT) {
- /*
- * The index is created only when the first data
- * packet arrives, it might not be ready at the
- * beginning of the session
- */
- viewer_index.status = htobe32(LTTNG_VIEWER_INDEX_RETRY);
- } else {
- /* Unhandled error. */
+ if (rstream->ongoing_rotation.is_set) {
+ /* Rotation is ongoing, try again later. */
+ viewer_index.status = htobe32(LTTNG_VIEWER_INDEX_RETRY);
+ goto send_reply;
+ }
+
+ if (rstream->trace->session->ongoing_rotation) {
+ /* Rotation is ongoing, try again later. */
+ viewer_index.status = htobe32(LTTNG_VIEWER_INDEX_RETRY);
+ goto send_reply;
+ }
+
+ if (rstream->trace_chunk && !lttng_trace_chunk_ids_equal(
+ conn->viewer_session->current_trace_chunk,
+ rstream->trace_chunk)) {
+ DBG("Relay stream and viewer chunk ids differ");
+
+ ret = viewer_session_set_trace_chunk_copy(
+ conn->viewer_session,
+ rstream->trace_chunk);
+ if (ret) {
viewer_index.status = htobe32(LTTNG_VIEWER_INDEX_ERR);
+ goto send_reply;
}
- goto send_reply;
+ }
+ if (conn->viewer_session->current_trace_chunk !=
+ vstream->stream_file.trace_chunk) {
+ bool acquired_reference;
+
+ DBG("Viewer session and viewer stream chunk differ: "
+ "vsession chunk %p vstream chunk %p",
+ conn->viewer_session->current_trace_chunk,
+ vstream->stream_file.trace_chunk);
+ lttng_trace_chunk_put(vstream->stream_file.trace_chunk);
+ acquired_reference = lttng_trace_chunk_get(conn->viewer_session->current_trace_chunk);
+ assert(acquired_reference);
+ vstream->stream_file.trace_chunk =
+ conn->viewer_session->current_trace_chunk;
+ viewer_stream_sync_tracefile_array_tail(vstream);
+ viewer_stream_close_files(vstream);
}
ret = check_index_status(vstream, rstream, ctf_trace, &viewer_index);
/* At this point, ret is 0 thus we will be able to read the index. */
assert(!ret);
+ /* Try to open an index if one is needed for that stream. */
+ ret = try_open_index(vstream, rstream);
+ if (ret == -ENOENT) {
+ if (rstream->closed) {
+ viewer_index.status = htobe32(LTTNG_VIEWER_INDEX_HUP);
+ goto send_reply;
+ } else {
+ viewer_index.status = htobe32(LTTNG_VIEWER_INDEX_RETRY);
+ goto send_reply;
+ }
+ }
+ if (ret < 0) {
+ viewer_index.status = htobe32(LTTNG_VIEWER_INDEX_ERR);
+ goto send_reply;
+ }
+
/*
* vstream->stream_fd may be NULL if it has been closed by
* tracefile rotation, or if we are at the beginning of the
* overwrite caused by tracefile rotation (in association with
* unlink performed before overwrite).
*/
- if (!vstream->stream_fd) {
- char fullpath[PATH_MAX];
-
- if (vstream->stream->tracefile_count > 0) {
- ret = snprintf(fullpath, PATH_MAX, "%s/%s_%" PRIu64,
- vstream->path_name,
- vstream->channel_name,
- vstream->current_tracefile_id);
- } else {
- ret = snprintf(fullpath, PATH_MAX, "%s/%s",
- vstream->path_name,
- vstream->channel_name);
- }
+ if (!vstream->stream_file.handle) {
+ char file_path[LTTNG_PATH_MAX];
+ enum lttng_trace_chunk_status status;
+ struct fs_handle *fs_handle;
+
+ ret = utils_stream_file_path(rstream->path_name,
+ rstream->channel_name, rstream->tracefile_size,
+ vstream->current_tracefile_id, NULL, file_path,
+ sizeof(file_path));
if (ret < 0) {
goto error_put;
}
- ret = open(fullpath, O_RDONLY);
- if (ret < 0) {
- PERROR("Relay opening trace file");
- goto error_put;
- }
- vstream->stream_fd = stream_fd_create(ret);
- if (!vstream->stream_fd) {
- if (close(ret)) {
- PERROR("close");
+
+ /*
+ * It is possible the the file we are trying to open is
+ * missing if the stream has been closed (application exits with
+ * per-pid buffers) and a clear command has been performed.
+ */
+ status = lttng_trace_chunk_open_fs_handle(
+ vstream->stream_file.trace_chunk,
+ file_path, O_RDONLY, 0, &fs_handle, true);
+ if (status != LTTNG_TRACE_CHUNK_STATUS_OK) {
+ if (status == LTTNG_TRACE_CHUNK_STATUS_NO_FILE &&
+ rstream->closed) {
+ viewer_index.status = htobe32(LTTNG_VIEWER_INDEX_HUP);
+ goto send_reply;
}
+ PERROR("Failed to open trace file for viewer stream");
goto error_put;
}
+ vstream->stream_file.handle = fs_handle;
}
ret = check_new_streams(conn);
viewer_index.flags |= LTTNG_VIEWER_FLAG_NEW_STREAM;
}
- read_ret = lttng_read(vstream->index_fd->fd, &packet_index,
- sizeof(packet_index));
- if (read_ret < sizeof(packet_index)) {
- ERR("Relay reading index file %d returned %zd",
- vstream->index_fd->fd, read_ret);
+ ret = lttng_index_file_read(vstream->index_file, &packet_index);
+ if (ret) {
+ ERR("Relay error reading index file");
viewer_index.status = htobe32(LTTNG_VIEWER_INDEX_ERR);
goto send_reply;
} else {
*/
DBG("Sending viewer index for stream %" PRIu64 " offset %" PRIu64,
rstream->stream_handle,
- be64toh(packet_index.offset));
+ (uint64_t) be64toh(packet_index.offset));
viewer_index.offset = packet_index.offset;
viewer_index.packet_size = packet_index.packet_size;
viewer_index.content_size = packet_index.content_size;
static
int viewer_get_packet(struct relay_connection *conn)
{
- int ret, send_data = 0;
- char *data = NULL;
- uint32_t len = 0;
- ssize_t read_len;
+ int ret;
+ off_t lseek_ret;
+ char *reply = NULL;
struct lttng_viewer_get_packet get_packet_info;
- struct lttng_viewer_trace_packet reply;
+ struct lttng_viewer_trace_packet reply_header;
struct relay_viewer_stream *vstream = NULL;
+ uint32_t reply_size = sizeof(reply_header);
+ uint32_t packet_data_len = 0;
+ ssize_t read_len;
+ uint64_t stream_id;
DBG2("Relay get data packet");
health_code_update();
/* From this point on, the error label can be reached. */
- memset(&reply, 0, sizeof(reply));
+ memset(&reply_header, 0, sizeof(reply_header));
+ stream_id = (uint64_t) be64toh(get_packet_info.stream_id);
- vstream = viewer_stream_get_by_id(be64toh(get_packet_info.stream_id));
+ vstream = viewer_stream_get_by_id(stream_id);
if (!vstream) {
DBG("Client requested packet of unknown stream id %" PRIu64,
- be64toh(get_packet_info.stream_id));
- reply.status = htobe32(LTTNG_VIEWER_GET_PACKET_ERR);
+ stream_id);
+ reply_header.status = htobe32(LTTNG_VIEWER_GET_PACKET_ERR);
goto send_reply_nolock;
+ } else {
+ packet_data_len = be32toh(get_packet_info.len);
+ reply_size += packet_data_len;
}
- pthread_mutex_lock(&vstream->stream->lock);
-
- len = be32toh(get_packet_info.len);
- data = zmalloc(len);
- if (!data) {
- PERROR("relay data zmalloc");
+ reply = zmalloc(reply_size);
+ if (!reply) {
+ PERROR("packet reply zmalloc");
+ reply_size = sizeof(reply_header);
goto error;
}
- ret = lseek(vstream->stream_fd->fd, be64toh(get_packet_info.offset),
- SEEK_SET);
- if (ret < 0) {
- PERROR("lseek fd %d to offset %" PRIu64, vstream->stream_fd->fd,
- be64toh(get_packet_info.offset));
+ pthread_mutex_lock(&vstream->stream->lock);
+ lseek_ret = fs_handle_seek(vstream->stream_file.handle,
+ be64toh(get_packet_info.offset), SEEK_SET);
+ if (lseek_ret < 0) {
+ PERROR("Failed to seek file system handle of viewer stream %" PRIu64
+ " to offset %" PRIu64,
+ stream_id,
+ (uint64_t) be64toh(get_packet_info.offset));
goto error;
}
- read_len = lttng_read(vstream->stream_fd->fd, data, len);
- if (read_len < len) {
- PERROR("Relay reading trace file, fd: %d, offset: %" PRIu64,
- vstream->stream_fd->fd,
- be64toh(get_packet_info.offset));
+ read_len = fs_handle_read(vstream->stream_file.handle,
+ reply + sizeof(reply_header), packet_data_len);
+ if (read_len < packet_data_len) {
+ PERROR("Failed to read from file system handle of viewer stream id %" PRIu64
+ ", offset: %" PRIu64,
+ stream_id,
+ (uint64_t) be64toh(get_packet_info.offset));
goto error;
}
- reply.status = htobe32(LTTNG_VIEWER_GET_PACKET_OK);
- reply.len = htobe32(len);
- send_data = 1;
+ reply_header.status = htobe32(LTTNG_VIEWER_GET_PACKET_OK);
+ reply_header.len = htobe32(packet_data_len);
goto send_reply;
error:
- reply.status = htobe32(LTTNG_VIEWER_GET_PACKET_ERR);
+ reply_header.status = htobe32(LTTNG_VIEWER_GET_PACKET_ERR);
send_reply:
if (vstream) {
pthread_mutex_unlock(&vstream->stream->lock);
}
send_reply_nolock:
- reply.flags = htobe32(reply.flags);
health_code_update();
- ret = send_response(conn->sock, &reply, sizeof(reply));
- if (ret < 0) {
- goto end_free;
+ if (reply) {
+ memcpy(reply, &reply_header, sizeof(reply_header));
+ ret = send_response(conn->sock, reply, reply_size);
+ } else {
+ /* No reply to send. */
+ ret = send_response(conn->sock, &reply_header,
+ reply_size);
}
- health_code_update();
- if (send_data) {
- health_code_update();
- ret = send_response(conn->sock, data, len);
- if (ret < 0) {
- goto end_free;
- }
- health_code_update();
+ health_code_update();
+ if (ret < 0) {
+ PERROR("sendmsg of packet data failed");
+ goto end_free;
}
- DBG("Sent %u bytes for stream %" PRIu64, len,
- be64toh(get_packet_info.stream_id));
+ DBG("Sent %u bytes for stream %" PRIu64, reply_size, stream_id);
end_free:
- free(data);
+ free(reply);
end:
if (vstream) {
viewer_stream_put(vstream);
int viewer_get_metadata(struct relay_connection *conn)
{
int ret = 0;
+ int fd = -1;
ssize_t read_len;
uint64_t len = 0;
char *data = NULL;
* find it.
*/
DBG("Client requested metadata of unknown stream id %" PRIu64,
- be64toh(request.stream_id));
+ (uint64_t) be64toh(request.stream_id));
reply.status = htobe32(LTTNG_VIEWER_METADATA_ERR);
goto send_reply;
}
goto error;
}
- assert(vstream->metadata_sent <= vstream->stream->metadata_received);
-
- len = vstream->stream->metadata_received - vstream->metadata_sent;
- if (len == 0) {
+ if (vstream->metadata_sent >= vstream->stream->metadata_received) {
+ /*
+ * The live viewers expect to receive a NO_NEW_METADATA
+ * status before a stream disappears, otherwise they abort the
+ * entire live connection when receiving an error status.
+ *
+ * Clear feature resets the metadata_sent to 0 until the
+ * same metadata is received again.
+ */
reply.status = htobe32(LTTNG_VIEWER_NO_NEW_METADATA);
+ /*
+ * The live viewer considers a closed 0 byte metadata stream as
+ * an error.
+ */
+ if (vstream->metadata_sent > 0) {
+ vstream->stream->no_new_metadata_notified = true;
+ if (vstream->stream->closed) {
+ /* Release ownership for the viewer metadata stream. */
+ viewer_stream_put(vstream);
+ }
+ }
goto send_reply;
}
- /* first time, we open the metadata file */
- if (!vstream->stream_fd) {
- char fullpath[PATH_MAX];
+ if (vstream->stream->trace_chunk &&
+ !lttng_trace_chunk_ids_equal(
+ conn->viewer_session->current_trace_chunk,
+ vstream->stream->trace_chunk)) {
+ /* A rotation has occurred on the relay stream. */
+ DBG("Metadata relay stream and viewer chunk ids differ");
- ret = snprintf(fullpath, PATH_MAX, "%s/%s", vstream->path_name,
- vstream->channel_name);
- if (ret < 0) {
- goto error;
+ ret = viewer_session_set_trace_chunk_copy(
+ conn->viewer_session,
+ vstream->stream->trace_chunk);
+ if (ret) {
+ reply.status = htobe32(LTTNG_VIEWER_METADATA_ERR);
+ goto send_reply;
}
- ret = open(fullpath, O_RDONLY);
+ }
+
+ if (conn->viewer_session->current_trace_chunk !=
+ vstream->stream_file.trace_chunk) {
+ bool acquired_reference;
+
+ DBG("Viewer session and viewer stream chunk differ: "
+ "vsession chunk %p vstream chunk %p",
+ conn->viewer_session->current_trace_chunk,
+ vstream->stream_file.trace_chunk);
+ lttng_trace_chunk_put(vstream->stream_file.trace_chunk);
+ acquired_reference = lttng_trace_chunk_get(conn->viewer_session->current_trace_chunk);
+ assert(acquired_reference);
+ vstream->stream_file.trace_chunk =
+ conn->viewer_session->current_trace_chunk;
+ viewer_stream_close_files(vstream);
+ }
+
+ len = vstream->stream->metadata_received - vstream->metadata_sent;
+
+ /*
+ * Either this is the first time the metadata file is read, or a
+ * rotation of the corresponding relay stream has occured.
+ */
+ if (!vstream->stream_file.handle && len > 0) {
+ struct fs_handle *fs_handle;
+ char file_path[LTTNG_PATH_MAX];
+ enum lttng_trace_chunk_status status;
+ struct relay_stream *rstream = vstream->stream;
+
+ ret = utils_stream_file_path(rstream->path_name,
+ rstream->channel_name, rstream->tracefile_size,
+ vstream->current_tracefile_id, NULL, file_path,
+ sizeof(file_path));
if (ret < 0) {
- PERROR("Relay opening metadata file");
goto error;
}
- vstream->stream_fd = stream_fd_create(ret);
- if (!vstream->stream_fd) {
- if (close(ret)) {
- PERROR("close");
+
+ /*
+ * It is possible the the metadata file we are trying to open is
+ * missing if the stream has been closed (application exits with
+ * per-pid buffers) and a clear command has been performed.
+ */
+ status = lttng_trace_chunk_open_fs_handle(
+ vstream->stream_file.trace_chunk,
+ file_path, O_RDONLY, 0, &fs_handle, true);
+ if (status != LTTNG_TRACE_CHUNK_STATUS_OK) {
+ if (status == LTTNG_TRACE_CHUNK_STATUS_NO_FILE) {
+ reply.status = htobe32(LTTNG_VIEWER_NO_NEW_METADATA);
+ len = 0;
+ if (vstream->stream->closed) {
+ viewer_stream_put(vstream);
+ }
+ goto send_reply;
}
+ PERROR("Failed to open metadata file for viewer stream");
goto error;
}
+ vstream->stream_file.handle = fs_handle;
+
+ if (vstream->metadata_sent != 0) {
+ /*
+ * The client does not expect to receive any metadata
+ * it has received and metadata files in successive
+ * chunks must be a strict superset of one another.
+ *
+ * Skip the first `metadata_sent` bytes to ensure
+ * they are not sent a second time to the client.
+ *
+ * Baring a block layer error or an internal error,
+ * this seek should not fail as
+ * `vstream->stream->metadata_received` is reset when
+ * a relay stream is rotated. If this is reached, it is
+ * safe to assume that
+ * `metadata_received` > `metadata_sent`.
+ */
+ const off_t seek_ret = fs_handle_seek(fs_handle,
+ vstream->metadata_sent, SEEK_SET);
+
+ if (seek_ret < 0) {
+ PERROR("Failed to seek metadata viewer stream file to `sent` position: pos = %" PRId64,
+ vstream->metadata_sent);
+ reply.status = htobe32(LTTNG_VIEWER_METADATA_ERR);
+ goto send_reply;
+ }
+ }
}
reply.len = htobe64(len);
goto error;
}
- read_len = lttng_read(vstream->stream_fd->fd, data, len);
- if (read_len < len) {
- PERROR("Relay reading metadata file");
+ fd = fs_handle_get_fd(vstream->stream_file.handle);
+ if (fd < 0) {
+ ERR("Failed to restore viewer stream file system handle");
goto error;
}
- vstream->metadata_sent += read_len;
- if (vstream->metadata_sent == vstream->stream->metadata_received
- && vstream->stream->closed) {
- /* Release ownership for the viewer metadata stream. */
- viewer_stream_put(vstream);
+ read_len = lttng_read(fd, data, len);
+ fs_handle_put_fd(vstream->stream_file.handle);
+ fd = -1;
+ if (read_len < len) {
+ if (read_len < 0) {
+ PERROR("Failed to read metadata file");
+ goto error;
+ } else {
+ /*
+ * A clear has been performed which prevents the relay
+ * from sending `len` bytes of metadata.
+ *
+ * It is important not to send any metadata if we
+ * couldn't read all the available metadata in one shot:
+ * sending partial metadata can cause the client to
+ * attempt to parse an incomplete (incoherent) metadata
+ * stream, which would result in an error.
+ */
+ const off_t seek_ret = fs_handle_seek(
+ vstream->stream_file.handle, -read_len,
+ SEEK_CUR);
+
+ DBG("Failed to read metadata: requested = %" PRIu64 ", got = %zd",
+ len, read_len);
+ read_len = 0;
+ len = 0;
+ if (seek_ret < 0) {
+ PERROR("Failed to restore metadata file position after partial read");
+ ret = -1;
+ goto error;
+ }
+ }
}
-
+ vstream->metadata_sent += read_len;
reply.status = htobe32(LTTNG_VIEWER_METADATA_OK);
goto send_reply;
}
DBG("Sent %" PRIu64 " bytes of metadata for stream %" PRIu64, len,
- be64toh(request.stream_id));
+ (uint64_t) be64toh(request.stream_id));
DBG("Metadata sent");
session = session_get_by_id(be64toh(request.session_id));
if (!session) {
DBG("Relay session %" PRIu64 " not found",
- be64toh(request.session_id));
+ (uint64_t) be64toh(request.session_id));
response.status = htobe32(LTTNG_VIEWER_DETACH_SESSION_UNK);
goto send_reply;
}
(void) lttng_poll_del(events, pollfd);
- ret = close(pollfd);
+ ret = fd_tracker_close_unsuspendable_fd(the_fd_tracker, &pollfd, 1,
+ fd_tracker_util_close_fd, NULL);
if (ret < 0) {
ERR("Closing pollfd %d", pollfd);
}
goto viewer_connections_ht_error;
}
- ret = create_thread_poll_set(&events, 2);
+ ret = create_named_thread_poll_set(&events, 2,
+ "Live viewer worker thread epoll");
if (ret < 0) {
goto error_poll_create;
}
health_code_update();
- if (!revents) {
- /* No activity for this FD (poll implementation). */
- continue;
- }
-
/* Thread quit pipe has been closed. Killing thread. */
ret = check_thread_quit_pipe(pollfd, revents);
if (ret) {
if (ret < 0) {
goto error;
}
- lttng_poll_add(&events, conn->sock->fd,
+ ret = lttng_poll_add(&events,
+ conn->sock->fd,
LPOLLIN | LPOLLRDHUP);
+ if (ret) {
+ ERR("Failed to add new live connection file descriptor to poll set");
+ goto error;
+ }
connection_ht_add(viewer_connections_ht, conn);
DBG("Connection socket %d added to poll", conn->sock->fd);
} else if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) {
exit:
error:
- lttng_poll_clean(&events);
+ (void) fd_tracker_util_poll_clean(the_fd_tracker, &events);
- /* Cleanup reamaining connection object. */
+ /* Cleanup remaining connection object. */
rcu_read_lock();
cds_lfht_for_each_entry(viewer_connections_ht->ht, &iter.iter,
destroy_conn,
lttng_ht_destroy(viewer_connections_ht);
viewer_connections_ht_error:
/* Close relay conn pipes */
- utils_close_pipe(live_conn_pipe);
+ (void) fd_tracker_util_pipe_close(the_fd_tracker, live_conn_pipe);
if (err) {
DBG("Viewer worker thread exited with error");
}
*/
static int create_conn_pipe(void)
{
- return utils_create_pipe_cloexec(live_conn_pipe);
+ return fd_tracker_util_pipe_open_cloexec(the_fd_tracker,
+ "Live connection pipe", live_conn_pipe);
}
int relayd_live_join(void)
}
/* Setup the dispatcher thread */
- ret = pthread_create(&live_dispatcher_thread, NULL,
+ ret = pthread_create(&live_dispatcher_thread, default_pthread_attr(),
thread_dispatcher, (void *) NULL);
if (ret) {
errno = ret;
}
/* Setup the worker thread */
- ret = pthread_create(&live_worker_thread, NULL,
+ ret = pthread_create(&live_worker_thread, default_pthread_attr(),
thread_worker, NULL);
if (ret) {
errno = ret;
}
/* Setup the listener thread */
- ret = pthread_create(&live_listener_thread, NULL,
+ ret = pthread_create(&live_listener_thread, default_pthread_attr(),
thread_listener, (void *) NULL);
if (ret) {
errno = ret;
projects / lttng-tools.git / blobdiff