src/v8/src/store-buffer-inl.h

   1 // Copyright 2011 the V8 project authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef V8_STORE_BUFFER_INL_H_
   6 #define V8_STORE_BUFFER_INL_H_
   7
   8 #include "src/store-buffer.h"
   9
  10 namespace v8 {
  11 namespace internal {
  12
  13 Address StoreBuffer::TopAddress() {
  14   return reinterpret_cast<Address>(heap_->store_buffer_top_address());
  15 }
  16
  17
  18 void StoreBuffer::Mark(Address addr) {
  19   ASSERT(!heap_->cell_space()->Contains(addr));
  20   ASSERT(!heap_->code_space()->Contains(addr));
  21   ASSERT(!heap_->old_data_space()->Contains(addr));
  22   Address* top = reinterpret_cast<Address*>(heap_->store_buffer_top());
  23   *top++ = addr;
  24   heap_->public_set_store_buffer_top(top);
  25   if ((reinterpret_cast<uintptr_t>(top) & kStoreBufferOverflowBit) != 0) {
  26     ASSERT(top == limit_);
  27     Compact();
  28   } else {
  29     ASSERT(top < limit_);
  30   }
  31 }
  32
  33
  34 void StoreBuffer::EnterDirectlyIntoStoreBuffer(Address addr) {
  35   if (store_buffer_rebuilding_enabled_) {
  36     SLOW_ASSERT(!heap_->cell_space()->Contains(addr) &&
  37                 !heap_->code_space()->Contains(addr) &&
  38                 !heap_->old_data_space()->Contains(addr) &&
  39                 !heap_->new_space()->Contains(addr));
  40     Address* top = old_top_;
  41     *top++ = addr;
  42     old_top_ = top;
  43     old_buffer_is_sorted_ = false;
  44     old_buffer_is_filtered_ = false;
  45     if (top >= old_limit_) {
  46       ASSERT(callback_ != NULL);
  47       (*callback_)(heap_,
  48                    MemoryChunk::FromAnyPointerAddress(heap_, addr),
  49                    kStoreBufferFullEvent);
  50     }
  51   }
  52 }
  53
  54
  55 void StoreBuffer::ClearDeadObject(HeapObject* object) {
  56   Address& map_field = Memory::Address_at(object->address());
  57   if (heap_->map_space()->Contains(map_field)) {
  58     map_field = NULL;
  59   }
  60 }
  61
  62
  63 } }  // namespace v8::internal
  64
  65 #endif  // V8_STORE_BUFFER_INL_H_