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Diffstat (limited to 'deps/v8/src/incremental-marking-inl.h')
-rw-r--r-- | deps/v8/src/incremental-marking-inl.h | 155 |
1 files changed, 0 insertions, 155 deletions
diff --git a/deps/v8/src/incremental-marking-inl.h b/deps/v8/src/incremental-marking-inl.h deleted file mode 100644 index 43fe0f5539..0000000000 --- a/deps/v8/src/incremental-marking-inl.h +++ /dev/null @@ -1,155 +0,0 @@ -// Copyright 2011 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 -// with the distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived -// from this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// 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. - -#ifndef V8_INCREMENTAL_MARKING_INL_H_ -#define V8_INCREMENTAL_MARKING_INL_H_ - -#include "incremental-marking.h" - -namespace v8 { -namespace internal { - - -bool IncrementalMarking::BaseRecordWrite(HeapObject* obj, - Object** slot, - Object* value) { - if (IsMarking() && value->IsHeapObject()) { - MarkBit value_bit = Marking::MarkBitFrom(HeapObject::cast(value)); - if (Marking::IsWhite(value_bit)) { - MarkBit obj_bit = Marking::MarkBitFrom(obj); - if (Marking::IsBlack(obj_bit)) { - BlackToGreyAndUnshift(obj, obj_bit); - RestartIfNotMarking(); - } - - // Object is either grey or white it will be scanned if survives. - return false; - } - return true; - } - return false; -} - - -void IncrementalMarking::RecordWrite(HeapObject* obj, - Object** slot, - Object* value) { - if (BaseRecordWrite(obj, slot, value) && is_compacting_ && slot != NULL) { - MarkBit obj_bit = Marking::MarkBitFrom(obj); - if (Marking::IsBlack(obj_bit)) { - // Object is not going to be rescanned we need to record the slot. - heap_->mark_compact_collector()->RecordSlot( - HeapObject::RawField(obj, 0), slot, value); - } - } -} - - -void IncrementalMarking::RecordWriteIntoCode(HeapObject* obj, - RelocInfo* rinfo, - Object* value) { - if (IsMarking() && value->IsHeapObject()) { - MarkBit value_bit = Marking::MarkBitFrom(HeapObject::cast(value)); - if (Marking::IsWhite(value_bit)) { - MarkBit obj_bit = Marking::MarkBitFrom(obj); - if (Marking::IsBlack(obj_bit)) { - BlackToGreyAndUnshift(obj, obj_bit); - RestartIfNotMarking(); - } - - // Object is either grey or white it will be scanned if survives. - return; - } - - if (is_compacting_) { - MarkBit obj_bit = Marking::MarkBitFrom(obj); - if (Marking::IsBlack(obj_bit)) { - // Object is not going to be rescanned we need to record the slot. - heap_->mark_compact_collector()->RecordRelocSlot(rinfo, - Code::cast(value)); - } - } - } -} - - -void IncrementalMarking::RecordWrites(HeapObject* obj) { - if (IsMarking()) { - MarkBit obj_bit = Marking::MarkBitFrom(obj); - if (Marking::IsBlack(obj_bit)) { - BlackToGreyAndUnshift(obj, obj_bit); - RestartIfNotMarking(); - } - } -} - - -void IncrementalMarking::BlackToGreyAndUnshift(HeapObject* obj, - MarkBit mark_bit) { - ASSERT(Marking::MarkBitFrom(obj) == mark_bit); - ASSERT(obj->Size() >= 2*kPointerSize); - ASSERT(IsMarking()); - Marking::BlackToGrey(mark_bit); - int obj_size = obj->Size(); - MemoryChunk::IncrementLiveBytes(obj->address(), -obj_size); - int64_t old_bytes_rescanned = bytes_rescanned_; - bytes_rescanned_ = old_bytes_rescanned + obj_size; - if ((bytes_rescanned_ >> 20) != (old_bytes_rescanned >> 20)) { - if (bytes_rescanned_ > 2 * heap_->PromotedSpaceSize()) { - // If we have queued twice the heap size for rescanning then we are - // going around in circles, scanning the same objects again and again - // as the program mutates the heap faster than we can incrementally - // trace it. In this case we switch to non-incremental marking in - // order to finish off this marking phase. - if (FLAG_trace_gc) { - PrintF("Hurrying incremental marking because of lack of progress\n"); - } - allocation_marking_factor_ = kMaxAllocationMarkingFactor; - } - } - - marking_deque_.UnshiftGrey(obj); -} - - -void IncrementalMarking::WhiteToGreyAndPush(HeapObject* obj, MarkBit mark_bit) { - WhiteToGrey(obj, mark_bit); - marking_deque_.PushGrey(obj); -} - - -void IncrementalMarking::WhiteToGrey(HeapObject* obj, MarkBit mark_bit) { - ASSERT(Marking::MarkBitFrom(obj) == mark_bit); - ASSERT(obj->Size() >= 2*kPointerSize); - ASSERT(IsMarking()); - Marking::WhiteToGrey(mark_bit); -} - - -} } // namespace v8::internal - -#endif // V8_INCREMENTAL_MARKING_INL_H_ |