start marker work

[lttv.git] / ltt / branches / poly / ltt / markers.h

diff --git a/ltt/branches/poly/ltt/markers.h b/ltt/branches/poly/ltt/markers.h
new file mode 100644 (file)
index 0000000..32a9080
--- /dev/null
+++ b/ltt/branches/poly/ltt/markers.h
@@ -0,0 +1,44 @@
+/*
+ * Marker support header.
+ *
+ * Mathieu Desnoyers, Auguest 2007
+ * License: LGPL.
+ */
+
+#include <ltt/trace.h>
+#include <ltt/compiler.h>
+
+struct marker_info {
+       char *name;
+       char *format;
+  unsigned long size;   /* size if known statically, else 0 */
+};
+
+enum marker_id {
+  MARKER_ID_SET_MARKER_ID = 0,  /* Static IDs available (range 0-7) */
+  MARKER_ID_SET_MARKER_FORMAT,
+  MARKER_ID_HEARTBEAT_32,
+  MARKER_ID_HEARTBEAT_64,
+  MARKER_ID_COMPACT,    /* Compact IDs (range: 8-127)      */
+  MARKER_ID_DYNAMIC,    /* Dynamic IDs (range: 128-65535)   */
+};
+
+static inline uint16_t marker_get_id_from_info(LttTrace *trace,
+    struct marker_info *info)
+{
+  return ((unsigned long)info - (unsigned long)trace->markers->data)
+           / sizeof(struct marker_info);
+}
+
+static inline struct marker_info *marker_get_info_from_id(LttTrace *trace,
+    uint16_t id)
+{
+  if (unlikely(trace->markers->len < id))
+    return NULL;
+  return &g_array_index(trace->markers, struct marker_info, id);
+}
+
+int marker_format_event(LttTrace *trace, const char *name, const char *format);
+int marker_id_event(LttTrace *trace, const char *name, uint16_t id);
+int allocate_marker_data(LttTrace *trace);
+int destroy_marker_data(LttTrace *trace);