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