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// Copyright (c) 2011 The Chromium 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 BASE_SCOPED_NATIVE_LIBRARY_H_
#define BASE_SCOPED_NATIVE_LIBRARY_H_
#include "base/base_export.h"
#include "base/macros.h"
#include "base/native_library.h"
namespace base {
class FilePath;
// A class which encapsulates a base::NativeLibrary object available only in a
// scope.
// This class automatically unloads the loaded library in its destructor.
class BASE_EXPORT ScopedNativeLibrary {
public:
// Initializes with a NULL library.
ScopedNativeLibrary();
// Takes ownership of the given library handle.
explicit ScopedNativeLibrary(NativeLibrary library);
// Opens the given library and manages its lifetime.
explicit ScopedNativeLibrary(const FilePath& library_path);
~ScopedNativeLibrary();
// Returns true if there's a valid library loaded.
bool is_valid() const { return !!library_; }
NativeLibrary get() const { return library_; }
void* GetFunctionPointer(const char* function_name) const;
// Takes ownership of the given library handle. Any existing handle will
// be freed.
void Reset(NativeLibrary library);
// Returns the native library handle and removes it from this object. The
// caller must manage the lifetime of the handle.
NativeLibrary Release();
private:
NativeLibrary library_;
DISALLOW_COPY_AND_ASSIGN(ScopedNativeLibrary);
};
} // namespace base
#endif // BASE_SCOPED_NATIVE_LIBRARY_H_
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