Fix: use lttng_waiter instead of futex in notification thread

[lttng-tools.git] / src / bin / lttng-sessiond / notification-thread-events.c

diff --git a/src/bin/lttng-sessiond/notification-thread-events.c b/src/bin/lttng-sessiond/notification-thread-events.c
index 00a2bf66f559f1d5b8d6ee2c019e3dd0c2241534..b0657a4c5675dde9d0d86d1478afbeaedf26646a 100644 (file)
--- a/src/bin/lttng-sessiond/notification-thread-events.c
+++ b/src/bin/lttng-sessiond/notification-thread-events.c
@@ -40,6 +40,7 @@
 #include <unistd.h>
 #include <assert.h>
 #include <inttypes.h>
+#include <fcntl.h>
 
 #define CLIENT_POLL_MASK_IN (LPOLLIN | LPOLLERR | LPOLLHUP | LPOLLRDHUP)
 #define CLIENT_POLL_MASK_IN_OUT (CLIENT_POLL_MASK_IN | LPOLLOUT)
@@ -405,6 +406,7 @@ int notification_thread_client_subscribe(struct notification_client *client,
                        &iter);
        node = cds_lfht_iter_get_node(&iter);
        if (!node) {
+               free(client_list_element);
                goto end_unlock;
        }
 
@@ -956,6 +958,7 @@ error:
        return ret;
 }
 
+static
 int handle_notification_thread_command_unregister_trigger(
                struct notification_thread_state *state,
                struct lttng_trigger *trigger,
@@ -1107,12 +1110,12 @@ int handle_notification_thread_command(
        }
 end:
        cds_list_del(&cmd->cmd_list_node);
-       futex_nto1_wake(&cmd->reply_futex);
+       lttng_waiter_wake_up(&cmd->reply_waiter);
        pthread_mutex_unlock(&handle->cmd_queue.lock);
        return ret;
 error_unlock:
        /* Wake-up and return a fatal error to the calling thread. */
-       futex_nto1_wake(&cmd->reply_futex);
+       lttng_waiter_wake_up(&cmd->reply_waiter);
        pthread_mutex_unlock(&handle->cmd_queue.lock);
        cmd->reply_code = LTTNG_ERR_FATAL;
 error:
@@ -1948,9 +1951,7 @@ int handle_notification_thread_channel_sample(
         * The monitoring pipe only holds messages smaller than PIPE_BUF,
         * ensuring that read/write of sampling messages are atomic.
         */
-       do {
-               ret = read(pipe, &sample_msg, sizeof(sample_msg));
-       } while (ret == -1 && errno == EINTR);
+       ret = lttng_read(pipe, &sample_msg, sizeof(sample_msg));
        if (ret != sizeof(sample_msg)) {
                ERR("[notification-thread] Failed to read from monitoring pipe (fd = %i)",
                                pipe);