mirror of
https://github.com/DrKLO/Telegram.git
synced 2024-12-23 06:50:36 +01:00
64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
// 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"
|
|
#include "base/scoped_generic.h"
|
|
|
|
namespace base {
|
|
|
|
class FilePath;
|
|
|
|
struct BASE_EXPORT NativeLibraryTraits {
|
|
// It's assumed that this is a fast inline function with little-to-no
|
|
// penalty for duplicate calls. This must be a static function even
|
|
// for stateful traits.
|
|
static NativeLibrary InvalidValue() { return nullptr; }
|
|
|
|
// This free function will not be called if library == InvalidValue()!
|
|
static void Free(NativeLibrary library);
|
|
};
|
|
|
|
// 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 ScopedGeneric<NativeLibrary, NativeLibraryTraits> {
|
|
public:
|
|
// Initializes with a NULL library.
|
|
ScopedNativeLibrary();
|
|
|
|
~ScopedNativeLibrary() override;
|
|
|
|
// 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);
|
|
|
|
// Move constructor. Takes ownership of handle stored in |scoped_library|
|
|
ScopedNativeLibrary(ScopedNativeLibrary&& scoped_library);
|
|
|
|
// Move assignment operator. Takes ownership of handle stored in
|
|
// |scoped_library|.
|
|
ScopedNativeLibrary& operator=(ScopedNativeLibrary&& scoped_library) =
|
|
default;
|
|
|
|
void* GetFunctionPointer(const char* function_name) const;
|
|
|
|
const NativeLibraryLoadError* GetError() const;
|
|
|
|
private:
|
|
NativeLibraryLoadError error_;
|
|
|
|
DISALLOW_COPY_AND_ASSIGN(ScopedNativeLibrary);
|
|
};
|
|
|
|
} // namespace base
|
|
|
|
#endif // BASE_SCOPED_NATIVE_LIBRARY_H_
|