src/v8/src/wasm/wasm-memory.h

// Copyright 2017 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_WASM_MEMORY_H_
#define V8_WASM_MEMORY_H_

#include "src/flags.h"
#include "src/handles.h"
#include "src/objects.h"

namespace v8 {
namespace internal {
namespace wasm {

#if V8_TARGET_ARCH_64_BIT
const bool kGuardRegionsSupported = true;
#else
const bool kGuardRegionsSupported = false;
#endif

inline bool EnableGuardRegions() {
  return FLAG_wasm_guard_pages && kGuardRegionsSupported &&
         !FLAG_experimental_wasm_threads;
}

Handle<JSArrayBuffer> NewArrayBuffer(
    Isolate*, size_t size, bool enable_guard_regions,
    SharedFlag shared = SharedFlag::kNotShared);

Handle<JSArrayBuffer> SetupArrayBuffer(
    Isolate*, void* allocation_base, size_t allocation_length,
    void* backing_store, size_t size, bool is_external,
    bool enable_guard_regions, SharedFlag shared = SharedFlag::kNotShared);

void DetachMemoryBuffer(Isolate* isolate, Handle<JSArrayBuffer> buffer,
                        bool free_memory);

}  // namespace wasm
}  // namespace internal
}  // namespace v8

#endif  // V8_WASM_MODULE_H_