Heap profiler: implement diffing of snapshots.

src/mark-compact.cc

 // Copyright 2006-2008 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:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 10 matching lines @@
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "v8.h"
 
 #include "execution.h"
+#include "heap-profiler.h"
 #include "global-handles.h"
 #include "ic-inl.h"
 #include "mark-compact.h"
 #include "stub-cache.h"
 
 namespace v8 {
 namespace internal {
 
 // -------------------------------------------------------------------------
 // MarkCompactCollector
@@ skipping 2170 matching lines @@
                                                     obj_size);
     }
   }
 
   ASSERT(!HeapObject::FromAddress(new_addr)->IsCode());
 
   HeapObject* copied_to = HeapObject::FromAddress(new_addr);
   if (copied_to->IsJSFunction()) {
     PROFILE(FunctionMoveEvent(old_addr, new_addr));
   }
+  HEAP_PROFILE(ObjectMoveEvent(old_addr, new_addr));
 
   return obj_size;
 }
 
 
 int MarkCompactCollector::RelocateOldPointerObject(HeapObject* obj) {
   return RelocateOldNonCodeObject(obj, Heap::old_pointer_space());
 }
 
 
@@ skipping 26 matching lines @@
     Heap::MoveBlock(new_addr, old_addr, obj_size);
   }
 
   HeapObject* copied_to = HeapObject::FromAddress(new_addr);
   if (copied_to->IsCode()) {
     // May also update inline cache target.
     Code::cast(copied_to)->Relocate(new_addr - old_addr);
     // Notify the logger that compiled code has moved.
     PROFILE(CodeMoveEvent(old_addr, new_addr));
   }
+  HEAP_PROFILE(ObjectMoveEvent(old_addr, new_addr));
 
   return obj_size;
 }
 
 
 int MarkCompactCollector::RelocateNewObject(HeapObject* obj) {
   int obj_size = obj->Size();
 
   // Get forwarding address
   Address old_addr = obj->address();
@@ skipping 24 matching lines @@
 #ifdef DEBUG
   if (FLAG_gc_verbose) {
     PrintF("relocate %p -> %p\n", old_addr, new_addr);
   }
 #endif
 
   HeapObject* copied_to = HeapObject::FromAddress(new_addr);
   if (copied_to->IsJSFunction()) {
     PROFILE(FunctionMoveEvent(old_addr, new_addr));
   }
+  HEAP_PROFILE(ObjectMoveEvent(old_addr, new_addr));
 
   return obj_size;
 }
 
 
 void MarkCompactCollector::ReportDeleteIfNeeded(HeapObject* obj) {
 #ifdef ENABLE_LOGGING_AND_PROFILING
   if (obj->IsCode()) {
     PROFILE(CodeDeleteEvent(obj->address()));
   } else if (obj->IsJSFunction()) {
     PROFILE(FunctionDeleteEvent(obj->address()));
   }
 #endif
 }
 
 } }  // namespace v8::internal