Rename data_available to data_pending

[lttng-tools.git] / src / bin / lttng-sessiond / cmd.c

diff --git a/src/bin/lttng-sessiond/cmd.c b/src/bin/lttng-sessiond/cmd.c
index 1d4f9264eb0a57e4aedfa595767b1478b9402a4f..1404e7f33f68d0e5ecec0f1d9544f330c7493526 100644 (file)
--- a/src/bin/lttng-sessiond/cmd.c
+++ b/src/bin/lttng-sessiond/cmd.c
@@ -584,7 +584,7 @@ close_sock:
 static int send_consumer_relayd_sockets(int domain,
                struct ltt_session *session, struct consumer_output *consumer, int fd)
 {
-       int ret;
+       int ret = LTTNG_OK;
 
        assert(session);
        assert(consumer);
@@ -640,7 +640,7 @@ static int setup_relayd(struct ltt_session *session)
                        assert(socket->fd >= 0);
 
                        pthread_mutex_lock(socket->lock);
-                       send_consumer_relayd_sockets(LTTNG_DOMAIN_UST, session,
+                       ret = send_consumer_relayd_sockets(LTTNG_DOMAIN_UST, session,
                                        usess->consumer, socket->fd);
                        pthread_mutex_unlock(socket->lock);
                        if (ret != LTTNG_OK) {
@@ -657,7 +657,7 @@ static int setup_relayd(struct ltt_session *session)
                        assert(socket->fd >= 0);
 
                        pthread_mutex_lock(socket->lock);
-                       send_consumer_relayd_sockets(LTTNG_DOMAIN_KERNEL, session,
+                       ret = send_consumer_relayd_sockets(LTTNG_DOMAIN_KERNEL, session,
                                        ksess->consumer, socket->fd);
                        pthread_mutex_unlock(socket->lock);
                        if (ret != LTTNG_OK) {
@@ -1528,11 +1528,6 @@ int cmd_set_consumer_uri(int domain, struct ltt_session *session,
                goto error;
        }
 
-       if (!session->start_consumer) {
-               ret = LTTNG_ERR_NO_CONSUMER;
-               goto error;
-       }
-
        /*
         * This case switch makes sure the domain session has a temporary consumer
         * so the URL can be set.
@@ -2142,11 +2137,6 @@ int cmd_enable_consumer(int domain, struct ltt_session *session)
                goto error;
        }
 
-       if (!session->start_consumer) {
-               ret = LTTNG_ERR_NO_CONSUMER;
-               goto error;
-       }
-
        switch (domain) {
        case 0:
                assert(session->consumer);
@@ -2213,11 +2203,6 @@ int cmd_enable_consumer(int domain, struct ltt_session *session)
                        break;
                }
 
-               /* Append default kernel trace dir to subdir */
-               strncat(ksess->consumer->subdir, DEFAULT_KERNEL_TRACE_DIR,
-                               sizeof(ksess->consumer->subdir) -
-                               strlen(ksess->consumer->subdir) - 1);
-
                /*
                 * @session-lock
                 * This is race free for now since the session lock is acquired before
@@ -2226,6 +2211,7 @@ int cmd_enable_consumer(int domain, struct ltt_session *session)
                 * is valid.
                 */
                rcu_read_lock();
+               /* Destroy current consumer. We are about to replace it */
                consumer_destroy_output(ksess->consumer);
                rcu_read_unlock();
                ksess->consumer = consumer;
@@ -2299,11 +2285,6 @@ int cmd_enable_consumer(int domain, struct ltt_session *session)
                        break;
                }
 
-               /* Append default kernel trace dir to subdir */
-               strncat(usess->consumer->subdir, DEFAULT_UST_TRACE_DIR,
-                               sizeof(usess->consumer->subdir) -
-                               strlen(usess->consumer->subdir) - 1);
-
                /*
                 * @session-lock
                 * This is race free for now since the session lock is acquired before
@@ -2312,6 +2293,7 @@ int cmd_enable_consumer(int domain, struct ltt_session *session)
                 * is valid.
                 */
                rcu_read_lock();
+               /* Destroy current consumer. We are about to replace it */
                consumer_destroy_output(usess->consumer);
                rcu_read_unlock();
                usess->consumer = consumer;
@@ -2320,6 +2302,8 @@ int cmd_enable_consumer(int domain, struct ltt_session *session)
                break;
        }
 
+       session->start_consumer = 1;
+
        /* Enable it */
        if (consumer) {
                consumer->enabled = 1;
@@ -2335,10 +2319,10 @@ error:
 }
 
 /*
- * Command LTTNG_DATA_AVAILABLE returning 0 if the data is NOT ready to be read
- * or else 1 if the data is available for trace analysis.
+ * Command LTTNG_DATA_PENDING returning 0 if the data is NOT pending meaning
+ * ready for trace analysis (or anykind of reader) or else 1 for pending data.
  */
-int cmd_data_available(struct ltt_session *session)
+int cmd_data_pending(struct ltt_session *session)
 {
        int ret;
        struct ltt_kernel_session *ksess = session->kernel_session;
@@ -2353,23 +2337,23 @@ int cmd_data_available(struct ltt_session *session)
        }
 
        if (ksess && ksess->consumer) {
-               ret = consumer_is_data_available(ksess->id, ksess->consumer);
-               if (ret == 0) {
+               ret = consumer_is_data_pending(ksess->id, ksess->consumer);
+               if (ret == 1) {
                        /* Data is still being extracted for the kernel. */
                        goto error;
                }
        }
 
        if (usess && usess->consumer) {
-               ret = consumer_is_data_available(usess->id, usess->consumer);
-               if (ret == 0) {
+               ret = consumer_is_data_pending(usess->id, usess->consumer);
+               if (ret == 1) {
                        /* Data is still being extracted for the kernel. */
                        goto error;
                }
        }
 
        /* Data is ready to be read by a viewer */
-       ret = 1;
+       ret = 0;
 
 error:
        return ret;