Fix: do not generate packet at destroy after stop

[lttng-modules.git] / lttng-events.c

diff --git a/lttng-events.c b/lttng-events.c
index d02f4dff0596934ad256c92fe45c01fa3edf5b8c..c129767469db48ebc3880496a0bf2fa0e7249dea 100644 (file)
--- a/lttng-events.c
+++ b/lttng-events.c
@@ -45,6 +45,8 @@
 #include "lttng-tracer.h"
 #include "lttng-abi-old.h"
 #include "wrapper/vzalloc.h"
+#include "wrapper/ringbuffer/backend.h"
+#include "wrapper/ringbuffer/frontend.h"
 
 #define METADATA_CACHE_DEFAULT_SIZE 4096
 
@@ -186,6 +188,10 @@ int lttng_session_enable(struct lttng_session *session)
                        chan->header_type = 2;  /* large */
        }
 
+       /* Clear each stream's quiescent state. */
+       list_for_each_entry(chan, &session->chan, list)
+               lib_ring_buffer_clear_quiescent_channel(chan->chan);
+
        ACCESS_ONCE(session->active) = 1;
        ACCESS_ONCE(session->been_active) = 1;
        ret = _lttng_session_metadata_statedump(session);
@@ -204,6 +210,7 @@ end:
 int lttng_session_disable(struct lttng_session *session)
 {
        int ret = 0;
+       struct lttng_channel *chan;
 
        mutex_lock(&sessions_mutex);
        if (!session->active) {
@@ -211,6 +218,11 @@ int lttng_session_disable(struct lttng_session *session)
                goto end;
        }
        ACCESS_ONCE(session->active) = 0;
+
+       /* Set each stream's quiescent state. */
+       list_for_each_entry(chan, &session->chan, list)
+               lib_ring_buffer_set_quiescent_channel(chan->chan);
+
 end:
        mutex_unlock(&sessions_mutex);
        return ret;