9c6c8d9960
1. Fix typo introduced in prior commit. 2. Guard code so TPH does not attempt to use OffThreadSpace. Bug: v8:9533 Change-Id: I37eeff6a9c6ec4a7c479161a01345aa82c884e54 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2047046 Reviewed-by: Peter Marshall <petermarshall@chromium.org> Reviewed-by: Leszek Swirski <leszeks@chromium.org> Reviewed-by: Ulan Degenbaev <ulan@chromium.org> Commit-Queue: Steve Blackburn <steveblackburn@google.com> Cr-Commit-Position: refs/heads/master@{#66214}
80 lines
2.5 KiB
C++
80 lines
2.5 KiB
C++
// Copyright 2019 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_EXECUTION_ISOLATE_UTILS_INL_H_
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#define V8_EXECUTION_ISOLATE_UTILS_INL_H_
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#include "src/execution/isolate-utils.h"
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#include "src/common/ptr-compr-inl.h"
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#include "src/execution/isolate.h"
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#include "src/heap/heap-write-barrier-inl.h"
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namespace v8 {
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namespace internal {
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inline const Isolate* GetIsolateForPtrCompr(HeapObject object) {
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#ifdef V8_COMPRESS_POINTERS
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return Isolate::FromRoot(GetIsolateRoot(object.ptr()));
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#else
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return nullptr;
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#endif // V8_COMPRESS_POINTERS
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}
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V8_INLINE Heap* GetHeapFromWritableObject(HeapObject object) {
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// Avoid using the below GetIsolateFromWritableObject because we want to be
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// able to get the heap, but not the isolate, for off-thread objects.
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#if defined V8_ENABLE_THIRD_PARTY_HEAP
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return Heap::GetIsolateFromWritableObject(object)->heap();
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#elif defined V8_COMPRESS_POINTERS
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Isolate* isolate = Isolate::FromRoot(GetIsolateRoot(object.ptr()));
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DCHECK_NOT_NULL(isolate);
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return isolate->heap();
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#else
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heap_internals::MemoryChunk* chunk =
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heap_internals::MemoryChunk::FromHeapObject(object);
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return chunk->GetHeap();
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#endif // V8_COMPRESS_POINTERS || V8_ENABLE_THIRD_PARTY_HEAP
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}
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V8_INLINE Isolate* GetIsolateFromWritableObject(HeapObject object) {
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// We don't want to allow accessing the isolate off-thread.
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DCHECK(!Heap::InOffThreadSpace(object));
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#ifdef V8_ENABLE_THIRD_PARTY_HEAP
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return Heap::GetIsolateFromWritableObject(object);
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#elif defined V8_COMPRESS_POINTERS
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Isolate* isolate = Isolate::FromRoot(GetIsolateRoot(object.ptr()));
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DCHECK_NOT_NULL(isolate);
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return isolate;
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#else
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return Isolate::FromHeap(GetHeapFromWritableObject(object));
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#endif // V8_COMPRESS_POINTERS, V8_ENABLE_THIRD_PARTY_HEAP
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}
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V8_INLINE bool GetIsolateFromHeapObject(HeapObject object, Isolate** isolate) {
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#ifdef V8_ENABLE_THIRD_PARTY_HEAP
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*isolate = Heap::GetIsolateFromWritableObject(object);
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return true;
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#elif defined V8_COMPRESS_POINTERS
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*isolate = GetIsolateFromWritableObject(object);
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return true;
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#else
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heap_internals::MemoryChunk* chunk =
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heap_internals::MemoryChunk::FromHeapObject(object);
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if (chunk->InReadOnlySpace()) {
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*isolate = nullptr;
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return false;
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}
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*isolate = Isolate::FromHeap(chunk->GetHeap());
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return true;
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#endif // V8_COMPRESS_POINTERS, V8_ENABLE_THIRD_PARTY_HEAP
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}
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} // namespace internal
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} // namespace v8
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#endif // V8_EXECUTION_ISOLATE_UTILS_INL_H_
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