Allows the host application to provide a mechanism to be notified and perfor...

include/v8.h

Index: include/v8.h
===================================================================
--- include/v8.h	(revision 5397)
+++ include/v8.h	(working copy)
@@ -2359,6 +2359,30 @@
 
 typedef void (*AddHistogramSampleCallback)(void* histogram, int sample);
 
+// --- M e m o r y  A l l o c a t i o n   C a l l b a c k ---
+  enum ObjectSpace {
+    kObjectSpaceNewSpace = 1 << 0,
+    kObjectSpaceOldPointerSpace = 1 << 1,
+    kObjectSpaceOldDataSpace = 1 << 2,
+    kObjectSpaceCodeSpace = 1 << 3,
+    kObjectSpaceMapSpace = 1 << 4,
+    kObjectSpaceLoSpace = 1 << 5,
+
+    kObjectSpaceAll = kObjectSpaceNewSpace | kObjectSpaceOldPointerSpace |
+      kObjectSpaceOldDataSpace | kObjectSpaceCodeSpace | kObjectSpaceMapSpace |
+      kObjectSpaceLoSpace
+  };
+
+  enum AllocationAction {
+    kAllocationActionAllocate = 1 << 0,
+    kAllocationActionFree = 1 << 1,
+    kAllocationActionAll = kAllocationActionAllocate | kAllocationActionFree
+  };
+
+typedef void (*MemoryAllocationCallback)(ObjectSpace space,
+                                         AllocationAction action,
+                                         int size);
+
 // --- F a i l e d A c c e s s C h e c k C a l l b a c k ---
 typedef void (*FailedAccessCheckCallback)(Local<Object> target,
                                           AccessType type,
@@ -2579,6 +2603,20 @@
   static void SetGlobalGCEpilogueCallback(GCCallback);
 
   /**
+   * Enables the host application to provide a mechanism to be notified
+   * and perform custom logging when V8 Allocates Executable Memory.
+   */
+  static void AddMemoryAllocationCallback(MemoryAllocationCallback callback,
+                                          ObjectSpace space,
+                                          AllocationAction action);
+
+  /**
+   * This function removes callback which was installed by
+   * AddMemoryAllocationCallback function.
+   */
+  static void RemoveMemoryAllocationCallback(MemoryAllocationCallback 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