X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=trunk%2Flttv%2Fltt%2Ftracefile.c;h=1d411e3e3f2ad94cc31e60e1bdbc53c35956534d;hb=e0c7c4004c56c9ad749889225f9b53aedc01fb30;hp=d30dc51188b0470327cbb212253614fd1c99d536;hpb=1550fba68437fc32b4f0ee82d82553c0fddb6d8a;p=lttv.git

diff --git a/trunk/lttv/ltt/tracefile.c b/trunk/lttv/ltt/tracefile.c
index d30dc511..1d411e3e 100644
--- a/trunk/lttv/ltt/tracefile.c
+++ b/trunk/lttv/ltt/tracefile.c
@@ -772,11 +772,18 @@ LttTrace *ltt_trace_open(const gchar *pathname)
     goto metadata_error;
   }
 
-  /* Get the trace information for the control/metadata_0 tracefile */
+  /*
+   * Get the trace information for the control/metadata_0 tracefile.
+   * Getting a correct trace start_time and start_tsc is insured by the fact
+   * that no subbuffers are supposed to be lost in the metadata channel.
+   * Therefore, the first subbuffer contains the start_tsc timestamp in its
+   * buffer header.
+   */
   g_assert(group->len > 0);
   tf = &g_array_index (group, LttTracefile, 0);
   header = (ltt_subbuffer_header_t *)tf->buffer.head;
-  g_assert(parse_trace_header(header, tf, t) == 0);
+  ret = parse_trace_header(header, tf, t);
+  g_assert(!ret);
 
   t->num_cpu = group->len;