1 // Copyright 2019 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_HEAP_READ_ONLY_HEAP_INL_H_ 6 #define V8_HEAP_READ_ONLY_HEAP_INL_H_ 7 8 #include "src/execution/isolate-utils-inl.h" 9 #include "src/heap/read-only-heap.h" 10 #include "src/roots/roots-inl.h" 11 12 namespace v8 { 13 namespace internal { 14 15 // static GetReadOnlyRoots(HeapObject object)16ReadOnlyRoots ReadOnlyHeap::GetReadOnlyRoots(HeapObject object) { 17 #ifdef V8_COMPRESS_POINTERS_IN_ISOLATE_CAGE 18 return ReadOnlyRoots( 19 Isolate::FromRootAddress(GetIsolateRootAddress(object.ptr()))); 20 #else 21 #ifdef V8_SHARED_RO_HEAP 22 // This fails if we are creating heap objects and the roots haven't yet been 23 // copied into the read-only heap. 24 auto* shared_ro_heap = SoleReadOnlyHeap::shared_ro_heap_; 25 if (shared_ro_heap != nullptr && shared_ro_heap->init_complete_) { 26 return ReadOnlyRoots(shared_ro_heap->read_only_roots_); 27 } 28 #endif // V8_SHARED_RO_HEAP 29 return ReadOnlyRoots(GetHeapFromWritableObject(object)); 30 #endif // V8_COMPRESS_POINTERS 31 } 32 33 } // namespace internal 34 } // namespace v8 35 36 #endif // V8_HEAP_READ_ONLY_HEAP_INL_H_ 37