| // 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/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_; } |
| |
| 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_MEMORY_NATIVE_LIBRARY_H_ |