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// Copyright 2023 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_HEAP_ZAPPING_H_
#define V8_HEAP_ZAPPING_H_
#include <cstdint>
#include "include/v8-internal.h"
#include "src/base/macros.h"
#include "src/common/globals.h"
#include "src/flags/flags.h"
namespace v8::internal::heap {
// Zapping is needed for verify heap, and always done in debug builds.
inline bool ShouldZapGarbage() {
#ifdef DEBUG
return true;
#else
#ifdef VERIFY_HEAP
return v8_flags.verify_heap;
#else
return false;
#endif
#endif
}
inline uintptr_t ZapValue() {
return v8_flags.clear_free_memory ? kClearedFreeMemoryValue : kZapValue;
}
// Zaps a contiguous block of regular memory [start..(start+size_in_bytes)[ with
// a given zap value.
void ZapBlock(Address start, size_t size_in_bytes, uintptr_t zap_value);
// Zaps a contiguous block of code memory [start..(start+size_in_bytes)[ with
// kCodeZapValue.
V8_EXPORT_PRIVATE void ZapCodeBlock(Address start, int size_in_bytes);
} // namespace v8::internal::heap
#endif // V8_HEAP_ZAPPING_H_
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