New GCCallbacks with additional parameters.

src/heap.cc

 // Copyright 2009 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 80 matching lines @@
 int Heap::max_old_generation_size_ = 512*MB;
 int Heap::initial_semispace_size_ = 512*KB;
 size_t Heap::code_range_size_ = 0;
 #endif
 
 // The snapshot semispace size will be the default semispace size if
 // snapshotting is used and will be the requested semispace size as
 // set up by ConfigureHeap otherwise.
 int Heap::reserved_semispace_size_ = Heap::max_semispace_size_;
 
+List<Heap::GCPrologueCallbackPair> Heap::gc_prologue_callbacks_;
+List<Heap::GCEpilogueCallbackPair> Heap::gc_epilogue_callbacks_;
+
 GCCallback Heap::global_gc_prologue_callback_ = NULL;
 GCCallback Heap::global_gc_epilogue_callback_ = NULL;
 
 // Variables set based on semispace_size_ and old_generation_size_ in
 // ConfigureHeap.
 
 // Will be 4 * reserved_semispace_size_ to ensure that young
 // generation can be aligned to its size.
 int Heap::survived_since_last_expansion_ = 0;
 int Heap::external_allocation_limit_ = 0;
@@ skipping 429 matching lines @@
 
 void Heap::PerformGarbageCollection(AllocationSpace space,
                                     GarbageCollector collector,
                                     GCTracer* tracer) {
   VerifySymbolTable();
   if (collector == MARK_COMPACTOR && global_gc_prologue_callback_) {
     ASSERT(!allocation_allowed_);
     GCTracer::ExternalScope scope(tracer);
     global_gc_prologue_callback_();
   }
+
+  GCType gc_type =
+      collector == MARK_COMPACTOR ? kGCTypeMarkSweepCompact : kGCTypeScavenge;
+
+  for (int i = 0; i < gc_prologue_callbacks_.length(); ++i) {
+    if (gc_type & gc_prologue_callbacks_[i].gc_type) {
+      gc_prologue_callbacks_[i].callback(gc_type, kNoGCCallbackFlags);
+    }
+  }
+
   EnsureFromSpaceIsCommitted();
 
   // Perform mark-sweep with optional compaction.
   if (collector == MARK_COMPACTOR) {
     MarkCompact(tracer);
   }
 
   // Always perform a scavenge to make room in new space.
   Scavenge();
 
@@ skipping 18 matching lines @@
 
   // Update relocatables.
   Relocatable::PostGarbageCollectionProcessing();
 
   if (collector == MARK_COMPACTOR) {
     // Register the amount of external allocated memory.
     amount_of_external_allocated_memory_at_last_global_gc_ =
         amount_of_external_allocated_memory_;
   }
 
+  GCCallbackFlags callback_flags = tracer->is_compacting()
+      ? kGCCallbackFlagCompacted
+      : kNoGCCallbackFlags;
+  for (int i = 0; i < gc_epilogue_callbacks_.length(); ++i) {
+    if (gc_type & gc_epilogue_callbacks_[i].gc_type) {
+      gc_epilogue_callbacks_[i].callback(gc_type, callback_flags);
+    }
+  }
+
   if (collector == MARK_COMPACTOR && global_gc_epilogue_callback_) {
     ASSERT(!allocation_allowed_);
     GCTracer::ExternalScope scope(tracer);
     global_gc_epilogue_callback_();
   }
   VerifySymbolTable();
 }
 
 
 void Heap::MarkCompact(GCTracer* tracer) {
@@ skipping 3182 matching lines @@
   if (HasBeenSetup()) {
     AllSpaces spaces;
     for (Space* space = spaces.next(); space != NULL; space = spaces.next())
       space->Unprotect();
   }
 }
 
 #endif
 
 
+void Heap::AddGCPrologueCallback(GCPrologueCallback callback, GCType gc_type) {
+  ASSERT(callback != NULL);
+  GCPrologueCallbackPair pair(callback, gc_type);
+  ASSERT(!gc_prologue_callbacks_.Contains(pair));
+  return gc_prologue_callbacks_.Add(pair);
+}
+
+
+void Heap::RemoveGCPrologueCallback(GCPrologueCallback callback) {
+  ASSERT(callback != NULL);
+  for (int i = 0; i < gc_prologue_callbacks_.length(); ++i) {
+    if (gc_prologue_callbacks_[i].callback == callback) {
+      gc_prologue_callbacks_.Remove(i);
+      return;
+    }
+  }
+  UNREACHABLE();
+}
+
+
+void Heap::AddGCEpilogueCallback(GCEpilogueCallback callback, GCType gc_type) {
+  ASSERT(callback != NULL);
+  GCEpilogueCallbackPair pair(callback, gc_type);
+  ASSERT(!gc_epilogue_callbacks_.Contains(pair));
+  return gc_epilogue_callbacks_.Add(pair);
+}
+
+
+void Heap::RemoveGCEpilogueCallback(GCEpilogueCallback callback) {
+  ASSERT(callback != NULL);
+  for (int i = 0; i < gc_epilogue_callbacks_.length(); ++i) {
+    if (gc_epilogue_callbacks_[i].callback == callback) {
+      gc_epilogue_callbacks_.Remove(i);
+      return;
+    }
+  }
+  UNREACHABLE();
+}
+
+
 #ifdef DEBUG
 
 class PrintHandleVisitor: public ObjectVisitor {
  public:
   void VisitPointers(Object** start, Object** end) {
     for (Object** p = start; p < end; p++)
       PrintF("  handle %p to %p\n", p, *p);
   }
 };
 
@@ skipping 504 matching lines @@
 void ExternalStringTable::TearDown() {
   new_space_strings_.Free();
   old_space_strings_.Free();
 }
 
 
 List<Object*> ExternalStringTable::new_space_strings_;
 List<Object*> ExternalStringTable::old_space_strings_;
 
 } }  // namespace v8::internal