Sampling profiler

runtime/vm/isolate.h

Index: runtime/vm/isolate.h
diff --git a/runtime/vm/isolate.h b/runtime/vm/isolate.h
index a01638d2ec23db3c16cbd0f7a8a5a9177018f516..07dd3c762c83168b3e1ab50eda3a48d24aeb2380 100644
--- a/runtime/vm/isolate.h
+++ b/runtime/vm/isolate.h
@@ -34,6 +34,7 @@ class HandleVisitor;
 class Heap;
 class ICData;
 class Instance;
+class IsolateProfilerData;
 class LongJump;
 class MessageHandler;
 class Mutex;
@@ -50,6 +51,7 @@ class RawInteger;
 class RawError;
 class RawFloat32x4;
 class RawInt32x4;
+class SampleBuffer;
 class Simulator;
 class StackResource;
 class StackZone;
@@ -203,6 +205,9 @@ class Isolate : public BaseIsolate {
   // The true stack limit for this isolate.
   uword saved_stack_limit() const { return saved_stack_limit_; }
 
+  // Retrieve the stack address bounds.
+  bool GetStackBounds(uintptr_t* lower, uintptr_t* upper);
+
   static uword GetSpecifiedStackSize();
 
   static const intptr_t kStackSizeBuffer = (4 * KB * kWordSize);
@@ -383,6 +388,19 @@ class Isolate : public BaseIsolate {
     return defer_finalization_count_ == 0;
   }
 
+  Mutex* profiler_data_mutex() const {
+    ASSERT(profiler_data_mutex_ != NULL);
+    return profiler_data_mutex_;
+  }
+
+  void set_profiler_data(IsolateProfilerData* profiler_data) {
+    profiler_data_ = profiler_data;
+  }
+
+  IsolateProfilerData* profiler_data() {
+    return profiler_data_;
+  }
+
  private:
   Isolate();
 
@@ -441,6 +459,9 @@ class Isolate : public BaseIsolate {
   // Ring buffer of objects assigned an id.
   ObjectIdRing* object_id_ring_;
 
+  IsolateProfilerData* profiler_data_;
+  Mutex* profiler_data_mutex_;

[siva, 2013/11/11 03:51:54]

can the mutex be a value object instead?

[Cutch, 2013/11/18 20:48:54]

Done.

+
   // Reusable handles support.
 #define REUSABLE_HANDLE_FIELDS(object)                                         \
   object* object##_handle_;                                                    \