Initial Timeline Events

runtime/vm/isolate.cc

Index: runtime/vm/isolate.cc
diff --git a/runtime/vm/isolate.cc b/runtime/vm/isolate.cc
index 40159cf9d80a7ddcdc6b3e1e0f3850e803d53236..56da593e5413512d2f66df0f312cf15e2f8df281 100644
--- a/runtime/vm/isolate.cc
+++ b/runtime/vm/isolate.cc
@@ -35,6 +35,7 @@
 #include "vm/symbols.h"
 #include "vm/tags.h"
 #include "vm/thread_interrupter.h"
+#include "vm/timeline.h"
 #include "vm/timer.h"
 #include "vm/visitor.h"
 
@@ -607,6 +608,7 @@ Isolate::Isolate()
       last_allocationprofile_gc_timestamp_(0),
       object_id_ring_(NULL),
       trace_buffer_(NULL),
+      timeline_event_buffer_(NULL),
       profiler_data_(NULL),
       thread_state_(NULL),
       tag_table_(GrowableObjectArray::null()),
@@ -654,6 +656,7 @@ Isolate::~Isolate() {
     delete compiler_stats_;
     compiler_stats_ = NULL;
   }
+  RemoveTimelineEventBuffer();
 }
 
 
@@ -681,6 +684,12 @@ Isolate* Isolate::Init(const char* name_prefix, bool is_vm_isolate) {
   ISOLATE_METRIC_LIST(ISOLATE_METRIC_INIT);
 #undef ISOLATE_METRIC_INIT
 
+  // Initialize Timeline streams.
+#define ISOLATE_TIMELINE_STREAM_INIT(name, enabled_by_default)                 \
+  result->stream_##name##_.Init(#name, enabled_by_default);
+  ISOLATE_TIMELINE_STREAM_LIST(ISOLATE_TIMELINE_STREAM_INIT);
+#undef ISOLATE_TIMELINE_STREAM_INIT
+
   // TODO(5411455): For now just set the recently created isolate as
   // the current isolate.
   Thread::EnterIsolate(result);
@@ -1394,6 +1403,10 @@ void Isolate::Shutdown() {
       OS::Print("[-] Stopping isolate:\n"
                 "\tisolate:    %s\n", name());
     }
+
+    if (timeline_event_buffer_ != NULL) {

[rmacnak, 2015/06/08 22:11:30]

Behind a flag.

+      timeline_event_buffer_->Dump();
+    }
   }
 
   // TODO(5411455): For now just make sure there are no current isolates
@@ -1492,6 +1505,21 @@ void Isolate::VisitPrologueWeakPersistentHandles(HandleVisitor* visitor) {
 }
 
 
+void Isolate::SetTimelineEventBuffer(
+    TimelineEventBuffer* timeline_event_buffer) {
+#define ISOLATE_TIMELINE_STREAM_SET_BUFFER(name, enabled_by_default)           \
+  stream_##name##_.set_buffer(timeline_event_buffer);
+  ISOLATE_TIMELINE_STREAM_LIST(ISOLATE_TIMELINE_STREAM_SET_BUFFER)
+#undef ISOLATE_TIMELINE_STREAM_SET_BUFFER
+  timeline_event_buffer_ = timeline_event_buffer;
+}
+
+void Isolate::RemoveTimelineEventBuffer() {
+  SetTimelineEventBuffer(NULL);
+  delete timeline_event_buffer_;
+}
+
+
 void Isolate::PrintJSON(JSONStream* stream, bool ref) {
   JSONObject jsobj(stream);
   jsobj.AddProperty("type", (ref ? "@Isolate" : "Isolate"));