* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#define _GNU_SOURCE
+#define _LGPL_SOURCE
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <common/common.h>
#include <common/defaults.h>
#include <common/uri.h>
+#include <common/relayd/relayd.h>
#include "consumer.h"
-#include "health.h"
+#include "health-sessiond.h"
#include "ust-app.h"
+#include "utils.h"
+
+/*
+ * Send a data payload using a given consumer socket of size len.
+ *
+ * The consumer socket lock MUST be acquired before calling this since this
+ * function can change the fd value.
+ *
+ * Return 0 on success else a negative value on error.
+ */
+int consumer_socket_send(struct consumer_socket *socket, void *msg, size_t len)
+{
+ int fd;
+ ssize_t size;
+
+ assert(socket);
+ assert(socket->fd_ptr);
+ assert(msg);
+
+ /* Consumer socket is invalid. Stopping. */
+ fd = *socket->fd_ptr;
+ if (fd < 0) {
+ goto error;
+ }
+
+ size = lttcomm_send_unix_sock(fd, msg, len);
+ if (size < 0) {
+ /* The above call will print a PERROR on error. */
+ DBG("Error when sending data to consumer on sock %d", fd);
+ /*
+ * At this point, the socket is not usable anymore thus closing it and
+ * setting the file descriptor to -1 so it is not reused.
+ */
+
+ /* This call will PERROR on error. */
+ (void) lttcomm_close_unix_sock(fd);
+ *socket->fd_ptr = -1;
+ goto error;
+ }
+
+ return 0;
+
+error:
+ return -1;
+}
+
+/*
+ * Receive a data payload using a given consumer socket of size len.
+ *
+ * The consumer socket lock MUST be acquired before calling this since this
+ * function can change the fd value.
+ *
+ * Return 0 on success else a negative value on error.
+ */
+int consumer_socket_recv(struct consumer_socket *socket, void *msg, size_t len)
+{
+ int fd;
+ ssize_t size;
+
+ assert(socket);
+ assert(socket->fd_ptr);
+ assert(msg);
+
+ /* Consumer socket is invalid. Stopping. */
+ fd = *socket->fd_ptr;
+ if (fd < 0) {
+ goto error;
+ }
+
+ size = lttcomm_recv_unix_sock(fd, msg, len);
+ if (size <= 0) {
+ /* The above call will print a PERROR on error. */
+ DBG("Error when receiving data from the consumer socket %d", fd);
+ /*
+ * At this point, the socket is not usable anymore thus closing it and
+ * setting the file descriptor to -1 so it is not reused.
+ */
+
+ /* This call will PERROR on error. */
+ (void) lttcomm_close_unix_sock(fd);
+ *socket->fd_ptr = -1;
+ goto error;
+ }
+
+ return 0;
+
+error:
+ return -1;
+}
/*
* Receive a reply command status message from the consumer. Consumer socket
assert(sock);
- ret = lttcomm_recv_unix_sock(sock->fd, &reply, sizeof(reply));
- if (ret <= 0) {
- if (ret == 0) {
- /* Orderly shutdown. Don't return 0 which means success. */
- ret = -1;
- }
- /* The above call will print a PERROR on error. */
- DBG("Fail to receive status reply on sock %d", sock->fd);
+ ret = consumer_socket_recv(sock, &reply, sizeof(reply));
+ if (ret < 0) {
goto end;
}
- if (reply.ret_code == LTTNG_OK) {
+ if (reply.ret_code == LTTCOMM_CONSUMERD_SUCCESS) {
/* All good. */
ret = 0;
} else {
assert(stream_count);
assert(key);
- ret = lttcomm_recv_unix_sock(sock->fd, &reply, sizeof(reply));
- if (ret <= 0) {
- if (ret == 0) {
- /* Orderly shutdown. Don't return 0 which means success. */
- ret = -1;
- }
- /* The above call will print a PERROR on error. */
- DBG("Fail to receive status reply on sock %d", sock->fd);
+ ret = consumer_socket_recv(sock, &reply, sizeof(reply));
+ if (ret < 0) {
goto end;
}
/* An error is possible so don't touch the key and stream_count. */
- if (reply.ret_code != LTTNG_OK) {
+ if (reply.ret_code != LTTCOMM_CONSUMERD_SUCCESS) {
ret = -1;
goto end;
}
*key = reply.key;
*stream_count = reply.stream_count;
+ ret = 0;
end:
return ret;
assert(consumer);
assert(sock);
- DBG2("Sending destroy relayd command to consumer sock %d", sock->fd);
-
- /* Bail out if consumer is disabled */
- if (!consumer->enabled) {
- ret = LTTNG_OK;
- DBG3("Consumer is disabled");
- goto error;
- }
+ DBG2("Sending destroy relayd command to consumer sock %d", *sock->fd_ptr);
+ memset(&msg, 0, sizeof(msg));
msg.cmd_type = LTTNG_CONSUMER_DESTROY_RELAYD;
msg.u.destroy_relayd.net_seq_idx = consumer->net_seq_index;
pthread_mutex_lock(sock->lock);
- ret = lttcomm_send_unix_sock(sock->fd, &msg, sizeof(msg));
+ ret = consumer_socket_send(sock, &msg, sizeof(msg));
if (ret < 0) {
- /* Indicate that the consumer is probably closing at this point. */
- DBG("send consumer destroy relayd command");
- goto error_send;
+ goto error;
}
/* Don't check the return value. The caller will do it. */
DBG2("Consumer send destroy relayd command done");
-error_send:
- pthread_mutex_unlock(sock->lock);
error:
+ pthread_mutex_unlock(sock->lock);
return ret;
}
assert(consumer);
/* Destroy any relayd connection */
- if (consumer && consumer->type == CONSUMER_DST_NET) {
+ if (consumer->type == CONSUMER_DST_NET) {
rcu_read_lock();
cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket,
node.node) {
socket = consumer_find_socket(data->cmd_sock, output);
rcu_read_unlock();
if (socket == NULL) {
- socket = consumer_allocate_socket(data->cmd_sock);
+ socket = consumer_allocate_socket(&data->cmd_sock);
if (socket == NULL) {
ret = -1;
goto error;
rcu_read_unlock();
}
+ socket->type = data->type;
+
DBG3("Consumer socket created (fd: %d) and added to output",
data->cmd_sock);
/*
* Allocate a new consumer_socket and return the pointer.
*/
-struct consumer_socket *consumer_allocate_socket(int fd)
+struct consumer_socket *consumer_allocate_socket(int *fd)
{
struct consumer_socket *socket = NULL;
+ assert(fd);
+
socket = zmalloc(sizeof(struct consumer_socket));
if (socket == NULL) {
PERROR("zmalloc consumer socket");
goto error;
}
- socket->fd = fd;
- lttng_ht_node_init_ulong(&socket->node, fd);
+ socket->fd_ptr = fd;
+ lttng_ht_node_init_ulong(&socket->node, *fd);
error:
return socket;
* consumer was registered,
*/
if (sock->registered) {
- DBG3("Consumer socket was registered. Closing fd %d", sock->fd);
- lttcomm_close_unix_sock(sock->fd);
+ DBG3("Consumer socket was registered. Closing fd %d", *sock->fd_ptr);
+ lttcomm_close_unix_sock(*sock->fd_ptr);
}
call_rcu(&sock->node.head, destroy_socket_rcu);
output->enabled = 1;
output->type = type;
output->net_seq_index = (uint64_t) -1ULL;
+ urcu_ref_init(&output->ref);
output->socks = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG);
}
/*
- * Delete the consumer_output object from the list and free the ptr.
- *
- * Should *NOT* be called with RCU read-side lock held.
+ * Iterate over the consumer output socket hash table and destroy them. The
+ * socket file descriptor are only closed if the consumer output was
+ * registered meaning it's an external consumer.
*/
-void consumer_destroy_output(struct consumer_output *obj)
+void consumer_destroy_output_sockets(struct consumer_output *obj)
{
- if (obj == NULL) {
+ struct lttng_ht_iter iter;
+ struct consumer_socket *socket;
+
+ if (!obj->socks) {
return;
}
- if (obj->socks) {
- struct lttng_ht_iter iter;
- struct consumer_socket *socket;
+ rcu_read_lock();
+ cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) {
+ consumer_del_socket(socket, obj);
+ consumer_destroy_socket(socket);
+ }
+ rcu_read_unlock();
+}
- rcu_read_lock();
- cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) {
- consumer_del_socket(socket, obj);
- consumer_destroy_socket(socket);
- }
- rcu_read_unlock();
+/*
+ * Delete the consumer_output object from the list and free the ptr.
+ *
+ * Should *NOT* be called with RCU read-side lock held.
+ */
+static void consumer_release_output(struct urcu_ref *ref)
+{
+ struct consumer_output *obj =
+ caa_container_of(ref, struct consumer_output, ref);
+ consumer_destroy_output_sockets(obj);
+
+ if (obj->socks) {
/* Finally destroy HT */
- lttng_ht_destroy(obj->socks);
+ ht_cleanup_push(obj->socks);
}
free(obj);
}
+/*
+ * Get the consumer_output object.
+ */
+void consumer_output_get(struct consumer_output *obj)
+{
+ urcu_ref_get(&obj->ref);
+}
+
+/*
+ * Put the consumer_output object.
+ *
+ * Should *NOT* be called with RCU read-side lock held.
+ */
+void consumer_output_put(struct consumer_output *obj)
+{
+ if (!obj) {
+ return;
+ }
+ urcu_ref_put(&obj->ref, consumer_release_output);
+}
+
/*
* Copy consumer output and returned the newly allocated copy.
*
*/
struct consumer_output *consumer_copy_output(struct consumer_output *obj)
{
- struct lttng_ht *tmp_ht_ptr;
- struct lttng_ht_iter iter;
- struct consumer_socket *socket, *copy_sock;
+ int ret;
struct consumer_output *output;
assert(obj);
output = consumer_create_output(obj->type);
if (output == NULL) {
- goto error;
+ goto end;
}
- /* Avoid losing the HT reference after the memcpy() */
- tmp_ht_ptr = output->socks;
+ output->enabled = obj->enabled;
+ output->net_seq_index = obj->net_seq_index;
+ memcpy(output->subdir, obj->subdir, PATH_MAX);
+ output->snapshot = obj->snapshot;
+ output->relay_major_version = obj->relay_major_version;
+ output->relay_minor_version = obj->relay_minor_version;
+ memcpy(&output->dst, &obj->dst, sizeof(output->dst));
+ ret = consumer_copy_sockets(output, obj);
+ if (ret < 0) {
+ goto error_put;
+ }
+end:
+ return output;
- memcpy(output, obj, sizeof(struct consumer_output));
+error_put:
+ consumer_output_put(output);
+ return NULL;
+}
+
+/*
+ * Copy consumer sockets from src to dst.
+ *
+ * Return 0 on success or else a negative value.
+ */
+int consumer_copy_sockets(struct consumer_output *dst,
+ struct consumer_output *src)
+{
+ int ret = 0;
+ struct lttng_ht_iter iter;
+ struct consumer_socket *socket, *copy_sock;
- /* Putting back the HT pointer and start copying socket(s). */
- output->socks = tmp_ht_ptr;
+ assert(dst);
+ assert(src);
rcu_read_lock();
- cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) {
+ cds_lfht_for_each_entry(src->socks->ht, &iter.iter, socket, node.node) {
+ /* Ignore socket that are already there. */
+ copy_sock = consumer_find_socket(*socket->fd_ptr, dst);
+ if (copy_sock) {
+ continue;
+ }
+
/* Create new socket object. */
- copy_sock = consumer_allocate_socket(socket->fd);
+ copy_sock = consumer_allocate_socket(socket->fd_ptr);
if (copy_sock == NULL) {
rcu_read_unlock();
- goto malloc_error;
+ ret = -ENOMEM;
+ goto error;
}
copy_sock->registered = socket->registered;
+ /*
+ * This is valid because this lock is shared accross all consumer
+ * object being the global lock of the consumer data structure of the
+ * session daemon.
+ */
copy_sock->lock = socket->lock;
- consumer_add_socket(copy_sock, output);
+ consumer_add_socket(copy_sock, dst);
}
rcu_read_unlock();
error:
- return output;
-
-malloc_error:
- consumer_destroy_output(output);
- return NULL;
+ return ret;
}
/*
goto error;
}
- strncpy(obj->subdir, tmp_path, sizeof(obj->subdir));
+ if (lttng_strncpy(obj->subdir, tmp_path, sizeof(obj->subdir))) {
+ ret = -LTTNG_ERR_INVALID;
+ goto error;
+ }
DBG3("Consumer set network uri subdir path %s", tmp_path);
}
assert(sock);
assert(nb_fd > 0);
- ret = lttcomm_send_fds_unix_sock(sock->fd, fds, nb_fd);
+ ret = lttcomm_send_fds_unix_sock(*sock->fd_ptr, fds, nb_fd);
if (ret < 0) {
/* The above call will print a PERROR on error. */
- DBG("Error when sending consumer fds on sock %d", sock->fd);
+ DBG("Error when sending consumer fds on sock %d", *sock->fd_ptr);
goto error;
}
ret = consumer_recv_status_reply(sock);
-
error:
return ret;
}
assert(msg);
assert(sock);
- assert(sock->fd >= 0);
- ret = lttcomm_send_unix_sock(sock->fd, msg,
- sizeof(struct lttcomm_consumer_msg));
+ ret = consumer_socket_send(sock, msg, sizeof(struct lttcomm_consumer_msg));
if (ret < 0) {
- /* The above call will print a PERROR on error. */
- DBG("Error when sending consumer channel on sock %d", sock->fd);
goto error;
}
assert(msg);
assert(sock);
- assert(sock->fd >= 0);
- ret = lttcomm_send_unix_sock(sock->fd, msg,
- sizeof(struct lttcomm_consumer_msg));
+ ret = consumer_send_msg(sock, msg);
if (ret < 0) {
- /* The above call will print a PERROR on error. */
- DBG("Error when sending consumer channel on sock %d", sock->fd);
goto error;
}
- ret = consumer_recv_status_reply(sock);
-
error:
return ret;
}
int overwrite,
unsigned int switch_timer_interval,
unsigned int read_timer_interval,
+ unsigned int live_timer_interval,
+ unsigned int monitor_timer_interval,
int output,
int type,
uint64_t session_id,
unsigned char *uuid,
uint32_t chan_id,
uint64_t tracefile_size,
- uint64_t tracefile_count)
+ uint64_t tracefile_count,
+ uint64_t session_id_per_pid,
+ unsigned int monitor,
+ uint32_t ust_app_uid,
+ const char *root_shm_path,
+ const char *shm_path)
{
assert(msg);
msg->u.ask_channel.overwrite = overwrite;
msg->u.ask_channel.switch_timer_interval = switch_timer_interval;
msg->u.ask_channel.read_timer_interval = read_timer_interval;
+ msg->u.ask_channel.live_timer_interval = live_timer_interval;
+ msg->u.ask_channel.monitor_timer_interval = monitor_timer_interval;
msg->u.ask_channel.output = output;
msg->u.ask_channel.type = type;
msg->u.ask_channel.session_id = session_id;
+ msg->u.ask_channel.session_id_per_pid = session_id_per_pid;
msg->u.ask_channel.uid = uid;
msg->u.ask_channel.gid = gid;
msg->u.ask_channel.relayd_id = relayd_id;
msg->u.ask_channel.chan_id = chan_id;
msg->u.ask_channel.tracefile_size = tracefile_size;
msg->u.ask_channel.tracefile_count = tracefile_count;
+ msg->u.ask_channel.monitor = monitor;
+ msg->u.ask_channel.ust_app_uid = ust_app_uid;
memcpy(msg->u.ask_channel.uuid, uuid, sizeof(msg->u.ask_channel.uuid));
- strncpy(msg->u.ask_channel.pathname, pathname,
- sizeof(msg->u.ask_channel.pathname));
- msg->u.ask_channel.pathname[sizeof(msg->u.ask_channel.pathname)-1] = '\0';
+ if (pathname) {
+ strncpy(msg->u.ask_channel.pathname, pathname,
+ sizeof(msg->u.ask_channel.pathname));
+ msg->u.ask_channel.pathname[sizeof(msg->u.ask_channel.pathname)-1] = '\0';
+ }
strncpy(msg->u.ask_channel.name, name, sizeof(msg->u.ask_channel.name));
msg->u.ask_channel.name[sizeof(msg->u.ask_channel.name) - 1] = '\0';
+
+ if (root_shm_path) {
+ strncpy(msg->u.ask_channel.root_shm_path, root_shm_path,
+ sizeof(msg->u.ask_channel.root_shm_path));
+ msg->u.ask_channel.root_shm_path[sizeof(msg->u.ask_channel.root_shm_path) - 1] = '\0';
+ }
+ if (shm_path) {
+ strncpy(msg->u.ask_channel.shm_path, shm_path,
+ sizeof(msg->u.ask_channel.shm_path));
+ msg->u.ask_channel.shm_path[sizeof(msg->u.ask_channel.shm_path) - 1] = '\0';
+ }
}
/*
enum lttng_event_output output,
int type,
uint64_t tracefile_size,
- uint64_t tracefile_count)
+ uint64_t tracefile_count,
+ unsigned int monitor,
+ unsigned int live_timer_interval,
+ unsigned int monitor_timer_interval)
{
assert(msg);
msg->u.channel.type = type;
msg->u.channel.tracefile_size = tracefile_size;
msg->u.channel.tracefile_count = tracefile_count;
+ msg->u.channel.monitor = monitor;
+ msg->u.channel.live_timer_interval = live_timer_interval;
+ msg->u.channel.monitor_timer_interval = monitor_timer_interval;
strncpy(msg->u.channel.pathname, pathname,
sizeof(msg->u.channel.pathname));
msg->u.stream.cpu = cpu;
}
+void consumer_init_streams_sent_comm_msg(struct lttcomm_consumer_msg *msg,
+ enum lttng_consumer_command cmd,
+ uint64_t channel_key, uint64_t net_seq_idx)
+{
+ assert(msg);
+
+ memset(msg, 0, sizeof(struct lttcomm_consumer_msg));
+
+ msg->cmd_type = cmd;
+ msg->u.sent_streams.channel_key = channel_key;
+ msg->u.sent_streams.net_seq_idx = net_seq_idx;
+}
+
/*
* Send stream communication structure to the consumer.
*/
assert(sock);
assert(fds);
- /* Send on socket */
- ret = lttcomm_send_unix_sock(sock->fd, msg,
- sizeof(struct lttcomm_consumer_msg));
- if (ret < 0) {
- /* The above call will print a PERROR on error. */
- DBG("Error when sending consumer stream on sock %d", sock->fd);
- goto error;
- }
-
- ret = consumer_recv_status_reply(sock);
+ ret = consumer_send_msg(sock, msg);
if (ret < 0) {
goto error;
}
*/
int consumer_send_relayd_socket(struct consumer_socket *consumer_sock,
struct lttcomm_relayd_sock *rsock, struct consumer_output *consumer,
- enum lttng_stream_type type, uint64_t session_id)
+ enum lttng_stream_type type, uint64_t session_id,
+ char *session_name, char *hostname, int session_live_timer)
{
int ret;
struct lttcomm_consumer_msg msg;
assert(consumer);
assert(consumer_sock);
+ memset(&msg, 0, sizeof(msg));
/* Bail out if consumer is disabled */
if (!consumer->enabled) {
ret = LTTNG_OK;
goto error;
}
+ if (type == LTTNG_STREAM_CONTROL) {
+ ret = relayd_create_session(rsock,
+ &msg.u.relayd_sock.relayd_session_id,
+ session_name, hostname, session_live_timer,
+ consumer->snapshot);
+ if (ret < 0) {
+ /* Close the control socket. */
+ (void) relayd_close(rsock);
+ goto error;
+ }
+ }
+
msg.cmd_type = LTTNG_CONSUMER_ADD_RELAYD_SOCKET;
/*
* Assign network consumer output index using the temporary consumer since
msg.u.relayd_sock.session_id = session_id;
memcpy(&msg.u.relayd_sock.sock, rsock, sizeof(msg.u.relayd_sock.sock));
- DBG3("Sending relayd sock info to consumer on %d", consumer_sock->fd);
- ret = lttcomm_send_unix_sock(consumer_sock->fd, &msg, sizeof(msg));
+ DBG3("Sending relayd sock info to consumer on %d", *consumer_sock->fd_ptr);
+ ret = consumer_send_msg(consumer_sock, &msg);
if (ret < 0) {
- /* The above call will print a PERROR on error. */
- DBG("Error when sending relayd sockets on sock %d", rsock->sock.fd);
goto error;
}
- ret = consumer_recv_status_reply(consumer_sock);
+ DBG3("Sending relayd socket file descriptor to consumer");
+ ret = consumer_send_fds(consumer_sock, &rsock->sock.fd, 1);
if (ret < 0) {
goto error;
}
- DBG3("Sending relayd socket file descriptor to consumer");
- ret = consumer_send_fds(consumer_sock, &rsock->sock.fd, 1);
+ DBG2("Consumer relayd socket sent");
+
+error:
+ return ret;
+}
+
+int consumer_send_channel_monitor_pipe(struct consumer_socket *consumer_sock,
+ int pipe)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+
+ /* Code flow error. Safety net. */
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE;
+
+ DBG3("Sending set_channel_monitor_pipe command to consumer");
+ ret = consumer_send_msg(consumer_sock, &msg);
if (ret < 0) {
goto error;
}
- DBG2("Consumer relayd socket sent");
+ DBG3("Sending channel monitoring pipe %d to consumer on socket %d",
+ pipe, *consumer_sock->fd_ptr);
+ ret = consumer_send_fds(consumer_sock, &pipe, 1);
+ if (ret < 0) {
+ goto error;
+ }
+ DBG2("Channel monitoring pipe successfully sent");
error:
return ret;
}
goto error;
}
- strncpy(consumer->subdir, tmp_path, sizeof(consumer->subdir));
+ if (lttng_strncpy(consumer->subdir, tmp_path,
+ sizeof(consumer->subdir))) {
+ ret = -EINVAL;
+ goto error;
+ }
DBG2("Consumer subdir set to %s", consumer->subdir);
error:
}
/*
- * Ask the consumer if the data is ready to read (NOT pending) for the specific
- * session id.
- *
- * This function has a different behavior with the consumer i.e. that it waits
- * for a reply from the consumer if yes or no the data is pending.
+ * Ask the consumer if the data is pending for the specific session id.
+ * Returns 1 if data is pending, 0 otherwise, or < 0 on error.
*/
int consumer_is_data_pending(uint64_t session_id,
struct consumer_output *consumer)
assert(consumer);
- msg.cmd_type = LTTNG_CONSUMER_DATA_PENDING;
+ DBG3("Consumer data pending for id %" PRIu64, session_id);
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_DATA_PENDING;
msg.u.data_pending.session_id = session_id;
- DBG3("Consumer data pending for id %" PRIu64, session_id);
-
/* Send command for each consumer */
rcu_read_lock();
cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket,
node.node) {
- /* Code flow error */
- assert(socket->fd >= 0);
-
pthread_mutex_lock(socket->lock);
-
- ret = lttcomm_send_unix_sock(socket->fd, &msg, sizeof(msg));
+ ret = consumer_socket_send(socket, &msg, sizeof(msg));
if (ret < 0) {
- /* The above call will print a PERROR on error. */
- DBG("Error on consumer is data pending on sock %d", socket->fd);
pthread_mutex_unlock(socket->lock);
goto error_unlock;
}
* the reply status message.
*/
- ret = lttcomm_recv_unix_sock(socket->fd, &ret_code, sizeof(ret_code));
- if (ret <= 0) {
- if (ret == 0) {
- /* Orderly shutdown. Don't return 0 which means success. */
- ret = -1;
- }
- /* The above call will print a PERROR on error. */
- DBG("Error on recv consumer is data pending on sock %d", socket->fd);
+ ret = consumer_socket_recv(socket, &ret_code, sizeof(ret_code));
+ if (ret < 0) {
pthread_mutex_unlock(socket->lock);
goto error_unlock;
}
-
pthread_mutex_unlock(socket->lock);
if (ret_code == 1) {
struct lttcomm_consumer_msg msg;
assert(socket);
- assert(socket->fd >= 0);
DBG2("Consumer flush channel key %" PRIu64, key);
+ memset(&msg, 0, sizeof(msg));
msg.cmd_type = LTTNG_CONSUMER_FLUSH_CHANNEL;
msg.u.flush_channel.key = key;
}
/*
- * Send a close metdata command to consumer using the given channel key.
+ * Send a clear quiescent command to consumer using the given channel key.
+ *
+ * Return 0 on success else a negative value.
+ */
+int consumer_clear_quiescent_channel(struct consumer_socket *socket, uint64_t key)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+
+ assert(socket);
+
+ DBG2("Consumer clear quiescent channel key %" PRIu64, key);
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_CLEAR_QUIESCENT_CHANNEL;
+ msg.u.clear_quiescent_channel.key = key;
+
+ pthread_mutex_lock(socket->lock);
+ health_code_update();
+
+ ret = consumer_send_msg(socket, &msg);
+ if (ret < 0) {
+ goto end;
+ }
+
+end:
+ health_code_update();
+ pthread_mutex_unlock(socket->lock);
+ return ret;
+}
+
+/*
+ * Send a close metadata command to consumer using the given channel key.
+ * Called with registry lock held.
*
* Return 0 on success else a negative value.
*/
struct lttcomm_consumer_msg msg;
assert(socket);
- assert(socket->fd >= 0);
DBG2("Consumer close metadata channel key %" PRIu64, metadata_key);
+ memset(&msg, 0, sizeof(msg));
msg.cmd_type = LTTNG_CONSUMER_CLOSE_METADATA;
msg.u.close_metadata.key = metadata_key;
struct lttcomm_consumer_msg msg;
assert(socket);
- assert(socket->fd >= 0);
DBG2("Consumer setup metadata channel key %" PRIu64, metadata_key);
+ memset(&msg, 0, sizeof(msg));
msg.cmd_type = LTTNG_CONSUMER_SETUP_METADATA;
msg.u.setup_metadata.key = metadata_key;
}
/*
- * Send metadata string to consumer. Socket lock MUST be acquired.
+ * Send metadata string to consumer.
+ * RCU read-side lock must be held to guarantee existence of socket.
*
* Return 0 on success else a negative value.
*/
int consumer_push_metadata(struct consumer_socket *socket,
uint64_t metadata_key, char *metadata_str, size_t len,
- size_t target_offset)
+ size_t target_offset, uint64_t version)
{
int ret;
struct lttcomm_consumer_msg msg;
assert(socket);
- assert(socket->fd >= 0);
- DBG2("Consumer push metadata to consumer socket %d", socket->fd);
+ DBG2("Consumer push metadata to consumer socket %d", *socket->fd_ptr);
+ pthread_mutex_lock(socket->lock);
+
+ memset(&msg, 0, sizeof(msg));
msg.cmd_type = LTTNG_CONSUMER_PUSH_METADATA;
msg.u.push_metadata.key = metadata_key;
msg.u.push_metadata.target_offset = target_offset;
msg.u.push_metadata.len = len;
+ msg.u.push_metadata.version = version;
health_code_update();
ret = consumer_send_msg(socket, &msg);
goto end;
}
- DBG3("Consumer pushing metadata on sock %d of len %zu", socket->fd, len);
+ DBG3("Consumer pushing metadata on sock %d of len %zu", *socket->fd_ptr,
+ len);
- ret = lttcomm_send_unix_sock(socket->fd, metadata_str, len);
+ ret = consumer_socket_send(socket, metadata_str, len);
if (ret < 0) {
goto end;
}
}
end:
+ pthread_mutex_unlock(socket->lock);
+ health_code_update();
+ return ret;
+}
+
+/*
+ * Ask the consumer to snapshot a specific channel using the key.
+ *
+ * Return 0 on success or else a negative error.
+ */
+int consumer_snapshot_channel(struct consumer_socket *socket, uint64_t key,
+ struct snapshot_output *output, int metadata, uid_t uid, gid_t gid,
+ const char *session_path, int wait, uint64_t nb_packets_per_stream)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+
+ assert(socket);
+ assert(output);
+ assert(output->consumer);
+
+ DBG("Consumer snapshot channel key %" PRIu64, key);
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_SNAPSHOT_CHANNEL;
+ msg.u.snapshot_channel.key = key;
+ msg.u.snapshot_channel.nb_packets_per_stream = nb_packets_per_stream;
+ msg.u.snapshot_channel.metadata = metadata;
+
+ if (output->consumer->type == CONSUMER_DST_NET) {
+ msg.u.snapshot_channel.relayd_id = output->consumer->net_seq_index;
+ msg.u.snapshot_channel.use_relayd = 1;
+ ret = snprintf(msg.u.snapshot_channel.pathname,
+ sizeof(msg.u.snapshot_channel.pathname),
+ "%s/%s-%s-%" PRIu64 "%s", output->consumer->subdir,
+ output->name, output->datetime, output->nb_snapshot,
+ session_path);
+ if (ret < 0) {
+ ret = -LTTNG_ERR_NOMEM;
+ goto error;
+ }
+ } else {
+ ret = snprintf(msg.u.snapshot_channel.pathname,
+ sizeof(msg.u.snapshot_channel.pathname),
+ "%s/%s-%s-%" PRIu64 "%s", output->consumer->dst.trace_path,
+ output->name, output->datetime, output->nb_snapshot,
+ session_path);
+ if (ret < 0) {
+ ret = -LTTNG_ERR_NOMEM;
+ goto error;
+ }
+ msg.u.snapshot_channel.relayd_id = (uint64_t) -1ULL;
+
+ /* Create directory. Ignore if exist. */
+ ret = run_as_mkdir_recursive(msg.u.snapshot_channel.pathname,
+ S_IRWXU | S_IRWXG, uid, gid);
+ if (ret < 0) {
+ if (errno != EEXIST) {
+ ERR("Trace directory creation error");
+ goto error;
+ }
+ }
+ }
+
health_code_update();
+ ret = consumer_send_msg(socket, &msg);
+ if (ret < 0) {
+ goto error;
+ }
+
+error:
+ health_code_update();
+ return ret;
+}
+
+/*
+ * Ask the consumer the number of discarded events for a channel.
+ */
+int consumer_get_discarded_events(uint64_t session_id, uint64_t channel_key,
+ struct consumer_output *consumer, uint64_t *discarded)
+{
+ int ret;
+ struct consumer_socket *socket;
+ struct lttng_ht_iter iter;
+ struct lttcomm_consumer_msg msg;
+
+ assert(consumer);
+
+ DBG3("Consumer discarded events id %" PRIu64, session_id);
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_DISCARDED_EVENTS;
+ msg.u.discarded_events.session_id = session_id;
+ msg.u.discarded_events.channel_key = channel_key;
+
+ *discarded = 0;
+
+ /* Send command for each consumer */
+ rcu_read_lock();
+ cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket,
+ node.node) {
+ uint64_t consumer_discarded = 0;
+ pthread_mutex_lock(socket->lock);
+ ret = consumer_socket_send(socket, &msg, sizeof(msg));
+ if (ret < 0) {
+ pthread_mutex_unlock(socket->lock);
+ goto end;
+ }
+
+ /*
+ * No need for a recv reply status because the answer to the
+ * command is the reply status message.
+ */
+ ret = consumer_socket_recv(socket, &consumer_discarded,
+ sizeof(consumer_discarded));
+ if (ret < 0) {
+ ERR("get discarded events");
+ pthread_mutex_unlock(socket->lock);
+ goto end;
+ }
+ pthread_mutex_unlock(socket->lock);
+ *discarded += consumer_discarded;
+ }
+ ret = 0;
+ DBG("Consumer discarded %" PRIu64 " events in session id %" PRIu64,
+ *discarded, session_id);
+
+end:
+ rcu_read_unlock();
+ return ret;
+}
+
+/*
+ * Ask the consumer the number of lost packets for a channel.
+ */
+int consumer_get_lost_packets(uint64_t session_id, uint64_t channel_key,
+ struct consumer_output *consumer, uint64_t *lost)
+{
+ int ret;
+ struct consumer_socket *socket;
+ struct lttng_ht_iter iter;
+ struct lttcomm_consumer_msg msg;
+
+ assert(consumer);
+
+ DBG3("Consumer lost packets id %" PRIu64, session_id);
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_LOST_PACKETS;
+ msg.u.lost_packets.session_id = session_id;
+ msg.u.lost_packets.channel_key = channel_key;
+
+ *lost = 0;
+
+ /* Send command for each consumer */
+ rcu_read_lock();
+ cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket,
+ node.node) {
+ uint64_t consumer_lost = 0;
+ pthread_mutex_lock(socket->lock);
+ ret = consumer_socket_send(socket, &msg, sizeof(msg));
+ if (ret < 0) {
+ pthread_mutex_unlock(socket->lock);
+ goto end;
+ }
+
+ /*
+ * No need for a recv reply status because the answer to the
+ * command is the reply status message.
+ */
+ ret = consumer_socket_recv(socket, &consumer_lost,
+ sizeof(consumer_lost));
+ if (ret < 0) {
+ ERR("get lost packets");
+ pthread_mutex_unlock(socket->lock);
+ goto end;
+ }
+ pthread_mutex_unlock(socket->lock);
+ *lost += consumer_lost;
+ }
+ ret = 0;
+ DBG("Consumer lost %" PRIu64 " packets in session id %" PRIu64,
+ *lost, session_id);
+
+end:
+ rcu_read_unlock();
return ret;
}
projects / lttng-tools.git / blobdiff