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// Copyright 2021 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_OBJECTS_VISITORS_INL_H_
#define V8_OBJECTS_VISITORS_INL_H_
#include "src/codegen/reloc-info.h"
#include "src/common/globals.h"
#include "src/execution/isolate.h"
#include "src/objects/map.h"
#include "src/objects/visitors.h"
namespace v8 {
namespace internal {
ObjectVisitorWithCageBases::ObjectVisitorWithCageBases(
PtrComprCageBase cage_base, PtrComprCageBase code_cage_base)
#if V8_COMPRESS_POINTERS
: cage_base_(cage_base)
#ifdef V8_EXTERNAL_CODE_SPACE
,
code_cage_base_(code_cage_base)
#endif // V8_EXTERNAL_CODE_SPACE
#endif // V8_COMPRESS_POINTERS
{
}
ObjectVisitorWithCageBases::ObjectVisitorWithCageBases(Isolate* isolate)
#if V8_COMPRESS_POINTERS
: ObjectVisitorWithCageBases(PtrComprCageBase(isolate->cage_base()),
PtrComprCageBase(isolate->code_cage_base()))
#else
: ObjectVisitorWithCageBases(PtrComprCageBase(), PtrComprCageBase())
#endif // V8_COMPRESS_POINTERS
{
}
ObjectVisitorWithCageBases::ObjectVisitorWithCageBases(Heap* heap)
: ObjectVisitorWithCageBases(Isolate::FromHeap(heap)) {}
template <typename Visitor>
inline void ClientRootVisitor<Visitor>::VisitRunningCode(
FullObjectSlot code_slot, FullObjectSlot maybe_istream_slot) {
#if DEBUG
DCHECK(!HeapObject::cast(*code_slot).InWritableSharedSpace());
Tagged<Object> maybe_istream = *maybe_istream_slot;
DCHECK(maybe_istream == Smi::zero() ||
!HeapObject::cast(maybe_istream).InWritableSharedSpace());
#endif
}
template <typename Visitor>
inline void ClientObjectVisitor<Visitor>::VisitMapPointer(
Tagged<HeapObject> host) {
if (!IsSharedHeapObject(host->map(cage_base()))) return;
actual_visitor_->VisitMapPointer(host);
}
template <typename Visitor>
inline void ClientObjectVisitor<Visitor>::VisitCodeTarget(
Tagged<InstructionStream> host, RelocInfo* rinfo) {
#if DEBUG
Tagged<InstructionStream> target =
InstructionStream::FromTargetAddress(rinfo->target_address());
DCHECK(!target.InWritableSharedSpace());
#endif
}
template <typename Visitor>
inline void ClientObjectVisitor<Visitor>::VisitEmbeddedPointer(
Tagged<InstructionStream> host, RelocInfo* rinfo) {
if (!IsSharedHeapObject(rinfo->target_object(cage_base()))) return;
actual_visitor_->VisitEmbeddedPointer(host, rinfo);
}
} // namespace internal
} // namespace v8
#endif // V8_OBJECTS_VISITORS_INL_H_
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