Initial implementation of GetStackSample sampling profiler API.

src/globals.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_GLOBALS_H_
 #define V8_GLOBALS_H_
 
 #include "include/v8stdint.h"
 
 #include "src/base/build_config.h"
@@ skipping 529 matching lines @@
 
 // AccessorCallback
 struct AccessorDescriptor {
   Object* (*getter)(Isolate* isolate, Object* object, void* data);
   Object* (*setter)(
       Isolate* isolate, JSObject* object, Object* value, void* data);
   void* data;
 };
 
 
-// Logging and profiling.  A StateTag represents a possible state of
-// the VM. The logger maintains a stack of these. Creating a VMState
-// object enters a state by pushing on the stack, and destroying a
-// VMState object leaves a state by popping the current state from the
-// stack.
-
-enum StateTag {
-  JS,
-  GC,
-  COMPILER,
-  OTHER,
-  EXTERNAL,
-  IDLE
-};
-
-
 // -----------------------------------------------------------------------------
 // Macros
 
 // Testers for test.
 
 #define HAS_SMI_TAG(value) \
   ((reinterpret_cast<intptr_t>(value) & kSmiTagMask) == kSmiTag)
 
 #define HAS_FAILURE_TAG(value) \
   ((reinterpret_cast<intptr_t>(value) & kFailureTagMask) == kFailureTag)
@@ skipping 225 matching lines @@
 
 inline bool IsConciseMethod(FunctionKind kind) {
   DCHECK(IsValidFunctionKind(kind));
   return kind & FunctionKind::kConciseMethod;
 }
 } }  // namespace v8::internal
 
 namespace i = v8::internal;
 
 #endif  // V8_GLOBALS_H_