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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_RUNTIME_NATIVE_BRIDGE_H_
#define ART_RUNTIME_NATIVE_BRIDGE_H_
#include "base/mutex.h"
#include <string>
namespace art {
struct NativeBridgeCallbacks;
class NativeBridge {
public:
// Initialize the native bridge, if any. Should be called by Runtime::Init(). An empty string
// signals that we do not want to load a native bridge.
static void SetNativeBridgeLibraryString(std::string& native_bridge_library_string);
// Load a shared library that is supported by the native-bridge.
static void* LoadLibrary(const char* libpath, int flag);
// Get a native-bridge trampoline for specified native method.
static void* GetTrampoline(void* handle, const char* name, const char* shorty, uint32_t len);
// True if native library is valid and is for an ABI that is supported by native-bridge.
static bool IsSupported(const char* libpath);
private:
static bool Initialize();
// The library name we are supposed to load.
static std::string native_bridge_library_string_;
// Whether we have already initialized (or tried to).
static bool initialized_ GUARDED_BY(lock_);
static Mutex lock_;
// Whether a native bridge is available (loaded and ready).
static bool available_;
static NativeBridgeCallbacks* callbacks_;
};
}; // namespace art
#endif // ART_RUNTIME_NATIVE_BRIDGE_H_
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