+void dump_snapshot()
+{
+ struct lttng_consumer_stream *iter;
+ unsigned long spos;
+ struct mmap_stream *new_snapshot;
+
+ int ret = 0;
+ int i;
+ /*
+ * try lock mutex ressource courante (overrun)
+ * if fail : overrun
+ * stop trace (flush implicite avant stop)
+ * lttng_consumer_take_snapshot
+ * read timestamp packet end (use time as end pos)
+ * - stream_packet_context
+ * - reculer de 1 subbuf : pos - max_subbuff_size
+ *
+ * - position de fin (take_snapshot)
+ * - mov_pos_slow ( fin - max_subbuff_size) lire timestamp packet end
+ * - prend min(end) (activité sur tous les streams)
+ *
+ * start trace
+ * unlock mutex
+ */
+
+ helper_kernctl_buffer_flush(consumerd_metadata);
+ for (i = 0; i < lttng_consumer_stream_array->len; i++) {
+ iter = g_ptr_array_index(lttng_consumer_stream_array, i);
+ helper_kernctl_buffer_flush(helper_get_lttng_consumer_stream_wait_fd(iter));
+ ret = helper_lttng_consumer_take_snapshot(ctx, iter);
+ if (ret != 0) {
+ ret = errno;
+ perror("lttng_consumer_take_snapshots");
+ goto end;
+ }
+ }
+ for (i = 0; i < lttng_consumer_stream_array->len; i++) {
+ iter = g_ptr_array_index(lttng_consumer_stream_array, i);
+ //cds_list_for_each_entry(iter2, &mmap_stream_list.head, list) {
+
+ ret = helper_lttng_consumer_get_produced_snapshot(ctx, iter, &spos);
+ if (ret != 0) {
+ ret = errno;
+ perror("helper_lttng_consumer_get_produced_snapshot");
+ goto end;
+ }
+ //while (iter->last_pos < spos) { FIXME : last_pos does not exists
+ new_snapshot = g_new0(struct mmap_stream, 1);
+ new_snapshot->fd = helper_get_lttng_consumer_stream_wait_fd(iter);
+ //FIXME new_snapshot->last_pos = iter->last_pos; /* not last_pos, pos for the snapshot */
+// fprintf(stderr,"ADDING AVAILABLE SNAPSHOT ON FD %d AT POSITION %lu\n",
+// new_snapshot->kconsumerd_fd->wait_fd,
+// new_snapshot->last_pos);
+ g_ptr_array_add(available_snapshots, new_snapshot);
+ //FIXME iter->last_pos += iter->chan->max_sb_size;
+ //}
+ }
+
+ if (!metadata_ready) {
+// fprintf(stderr, "BLOCKING BEFORE METADATA\n");
+ sem_wait(&metadata_available);
+// fprintf(stderr,"OPENING TRACE\n");
+ if (access("/tmp/livesession/kernel/metadata", F_OK) != 0) {
+ fprintf(stderr,"NO METADATA FILE, SKIPPING\n");
+ return;
+ }
+ metadata_ready = 1;
+ metadata_fp = fopen("/tmp/livesession/kernel/metadata", "r");
+ }
+
+ if (!trace_opened) {
+ //bt_ctx = bt_context_create();
+// ret = bt_context_add_trace(ctx, NULL, "ctf", ctf_move_mmap_pos_slow, mmap_list, metadata_fp);
+ trace_opened = 1;
+ }
+ //iter_trace(bt_ctx);
+
+end:
+ return;
+}
+