Merge V8 at 3.8.9.11

Bug: 5688872

Change-Id: Ie3b1dd67a730ec5e82686b7b37dba26f6a9bb24f

3 files changed, 58 insertions, 8 deletions

diff --git a/include/v8-profiler.h b/include/v8-profiler.h
index f67646f5..27b3c6de 100644
--- a/include/v8-profiler.h
+++ b/include/v8-profiler.h
@@ -219,8 +219,9 @@ class V8EXPORT HeapGraphEdge {
                            // (e.g. parts of a ConsString).
     kHidden = 4,           // A link that is needed for proper sizes
                            // calculation, but may be hidden from user.
-    kShortcut = 5          // A link that must not be followed during
+    kShortcut = 5,         // A link that must not be followed during
                            // sizes calculation.
+    kWeak = 6              // A weak reference (ignored by the GC).
   };
 
   /** Returns edge type (see HeapGraphEdge::Type). */
diff --git a/include/v8.h b/include/v8.h
index 7cad7b62..08c2fa2b 100644
--- a/include/v8.h
+++ b/include/v8.h
@@ -1732,6 +1732,14 @@ class Function : public Object {
   V8EXPORT Handle<Value> GetName() const;
 
   /**
+   * Name inferred from variable or property assignment of this function.
+   * Used to facilitate debugging and profiling of JavaScript code written
+   * in an OO style, where many functions are anonymous but are assigned
+   * to object properties.
+   */
+  V8EXPORT Handle<Value> GetInferredName() const;
+
+  /**
    * Returns zero based line number of function body and
    * kLineOffsetNotFound if no information available.
    */
@@ -2635,6 +2643,9 @@ typedef void (*MemoryAllocationCallback)(ObjectSpace space,
                                          AllocationAction action,
                                          int size);
 
+// --- Leave Script Callback ---
+typedef void (*CallCompletedCallback)();
+
 // --- Failed Access Check Callback ---
 typedef void (*FailedAccessCheckCallback)(Local<Object> target,
                                           AccessType type,
@@ -2714,7 +2725,7 @@ class RetainedObjectInfo;
  * default isolate is implicitly created and entered.  The embedder
  * can create additional isolates and use them in parallel in multiple
  * threads.  An isolate can be entered by at most one thread at any
- * given time.  The Locker/Unlocker API can be used to synchronize.
+ * given time.  The Locker/Unlocker API must be used to synchronize.
  */
 class V8EXPORT Isolate {
  public:
@@ -2845,6 +2856,17 @@ class V8EXPORT StartupDataDecompressor {  // NOLINT
  */
 typedef bool (*EntropySource)(unsigned char* buffer, size_t length);
 
+
+/**
+ * Interface for iterating though all external resources in the heap.
+ */
+class V8EXPORT ExternalResourceVisitor {  // NOLINT
+ public:
+  virtual ~ExternalResourceVisitor() {}
+  virtual void VisitExternalString(Handle<String> string) {}
+};
+
+
 /**
  * Container class for static utility functions.
  */
@@ -3033,12 +3055,25 @@ class V8EXPORT V8 {
                                           AllocationAction action);
 
   /**
-   * This function removes callback which was installed by
-   * AddMemoryAllocationCallback function.
+   * Removes callback that was installed by AddMemoryAllocationCallback.
    */
   static void RemoveMemoryAllocationCallback(MemoryAllocationCallback callback);
 
   /**
+   * Adds a callback to notify the host application when a script finished
+   * running.  If a script re-enters the runtime during executing, the
+   * CallCompletedCallback is only invoked when the outer-most script
+   * execution ends.  Executing scripts inside the callback do not trigger
+   * further callbacks.
+   */
+  static void AddCallCompletedCallback(CallCompletedCallback callback);
+
+  /**
+   * Removes callback that was installed by AddCallCompletedCallback.
+   */
+  static void RemoveCallCompletedCallback(CallCompletedCallback callback);
+
+  /**
    * Allows the host application to group objects together. If one
    * object in the group is alive, all objects in the group are alive.
    * After each garbage collection, object groups are removed. It is
@@ -3188,14 +3223,25 @@ class V8EXPORT V8 {
   static void GetHeapStatistics(HeapStatistics* heap_statistics);
 
   /**
+   * Iterates through all external resources referenced from current isolate
+   * heap. This method is not expected to be used except for debugging purposes
+   * and may be quite slow.
+   */
+  static void VisitExternalResources(ExternalResourceVisitor* visitor);
+
+  /**
    * Optional notification that the embedder is idle.
    * V8 uses the notification to reduce memory footprint.
    * This call can be used repeatedly if the embedder remains idle.
    * Returns true if the embedder should stop calling IdleNotification
    * until real work has been done.  This indicates that V8 has done
    * as much cleanup as it will be able to do.
+   *
+   * The hint argument specifies the amount of work to be done in the function
+   * on scale from 1 to 1000. There is no guarantee that the actual work will
+   * match the hint.
    */
-  static bool IdleNotification();
+  static bool IdleNotification(int hint = 1000);
 
   /**
    * Optional notification that the system is running low on memory.
@@ -3521,7 +3567,9 @@ class V8EXPORT Context {
  * accessing handles or holding onto object pointers obtained
  * from V8 handles while in the particular V8 isolate.  It is up
  * to the user of V8 to ensure (perhaps with locking) that this
- * constraint is not violated.
+ * constraint is not violated.  In addition to any other synchronization
+ * mechanism that may be used, the v8::Locker and v8::Unlocker classes
+ * must be used to signal thead switches to V8.
  *
  * v8::Locker is a scoped lock object. While it's
  * active (i.e. between its construction and destruction) the current thread is
@@ -3796,7 +3844,7 @@ class Internals {
   static const int kFullStringRepresentationMask = 0x07;
   static const int kExternalTwoByteRepresentationTag = 0x02;
 
-  static const int kJSObjectType = 0xa6;
+  static const int kJSObjectType = 0xa7;
   static const int kFirstNonstringType = 0x80;
   static const int kForeignType = 0x85;
 
diff --git a/include/v8stdint.h b/include/v8stdint.h
index 50b4f29a..7c12e1f4 100644
--- a/include/v8stdint.h
+++ b/include/v8stdint.h
@@ -1,4 +1,4 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
+// Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -30,6 +30,7 @@
 #ifndef V8STDINT_H_
 #define V8STDINT_H_
 
+#include <stddef.h>
 #include <stdio.h>
 
 #if defined(_WIN32) && !defined(__MINGW32__)