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// Copyright 2018 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_WASM_IMPORT_WRAPPER_CACHE_H_
#define V8_WASM_WASM_IMPORT_WRAPPER_CACHE_H_
#include "src/base/platform/mutex.h"
#include "src/compiler/wasm-compiler.h"
namespace v8 {
namespace internal {
class Counters;
namespace wasm {
class WasmCode;
class WasmEngine;
using FunctionSig = Signature<ValueType>;
// Implements a cache for import wrappers.
class WasmImportWrapperCache {
public:
~WasmImportWrapperCache();
V8_EXPORT_PRIVATE WasmCode* GetOrCompile(WasmEngine* wasm_engine,
Counters* counters,
compiler::WasmImportCallKind kind,
FunctionSig* sig);
private:
friend class NativeModule;
using CacheKey = std::pair<uint8_t, FunctionSig>;
mutable base::Mutex mutex_;
NativeModule* native_module_;
std::unordered_map<CacheKey, WasmCode*, base::hash<CacheKey>> entry_map_;
explicit WasmImportWrapperCache(NativeModule* native_module)
: native_module_(native_module) {}
};
} // namespace wasm
} // namespace internal
} // namespace v8
#endif // V8_WASM_WASM_IMPORT_WRAPPER_CACHE_H_
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