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// Copyright 2019 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef V8_EXECUTION_ISOLATE_UTILS_INL_H_ #define V8_EXECUTION_ISOLATE_UTILS_INL_H_ #include "src/execution/isolate-utils.h" #include "src/common/ptr-compr-inl.h" #include "src/execution/isolate.h" #include "src/heap/heap-write-barrier-inl.h" namespace v8 { namespace internal { inline Isolate* GetIsolateForPtrCompr(HeapObject object) { #ifdef V8_COMPRESS_POINTERS return Isolate::FromRoot(GetIsolateRoot(object.ptr())); #else return nullptr; #endif // V8_COMPRESS_POINTERS } V8_INLINE Heap* GetHeapFromWritableObject(HeapObject object) { #ifdef V8_COMPRESS_POINTERS return GetIsolateFromWritableObject(object)->heap(); #else heap_internals::MemoryChunk* chunk = heap_internals::MemoryChunk::FromHeapObject(object); return chunk->GetHeap(); #endif // V8_COMPRESS_POINTERS } V8_INLINE Isolate* GetIsolateFromWritableObject(HeapObject object) { #ifdef V8_COMPRESS_POINTERS Isolate* isolate = Isolate::FromRoot(GetIsolateRoot(object.ptr())); DCHECK_NOT_NULL(isolate); return isolate; #else return Isolate::FromHeap(GetHeapFromWritableObject(object)); #endif // V8_COMPRESS_POINTERS } V8_INLINE bool GetIsolateFromHeapObject(HeapObject object, Isolate** isolate) { #ifdef V8_COMPRESS_POINTERS *isolate = GetIsolateFromWritableObject(object); return true; #else heap_internals::MemoryChunk* chunk = heap_internals::MemoryChunk::FromHeapObject(object); if (chunk->InReadOnlySpace()) { *isolate = nullptr; return false; } *isolate = Isolate::FromHeap(chunk->GetHeap()); return true; #endif // V8_COMPRESS_POINTERS } } // namespace internal } // namespace v8 #endif // V8_EXECUTION_ISOLATE_UTILS_INL_H_