base/scoped_native_library.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/scoped_native_library.h"
   6
   7 namespace base {
   8
   9 ScopedNativeLibrary::ScopedNativeLibrary() : library_(nullptr) {}
  10
  11 ScopedNativeLibrary::ScopedNativeLibrary(NativeLibrary library)
  12     : library_(library) {
  13 }
  14
  15 ScopedNativeLibrary::ScopedNativeLibrary(const FilePath& library_path) {
  16   library_ = base::LoadNativeLibrary(library_path, nullptr);
  17 }
  18
  19 ScopedNativeLibrary::~ScopedNativeLibrary() {
  20   if (library_)
  21     base::UnloadNativeLibrary(library_);
  22 }
  23
  24 void* ScopedNativeLibrary::GetFunctionPointer(
  25     const char* function_name) const {
  26   if (!library_)
  27     return nullptr;
  28   return base::GetFunctionPointerFromNativeLibrary(library_, function_name);
  29 }
  30
  31 void ScopedNativeLibrary::Reset(NativeLibrary library) {
  32   if (library_)
  33     base::UnloadNativeLibrary(library_);
  34   library_ = library;
  35 }
  36
  37 NativeLibrary ScopedNativeLibrary::Release() {
  38   NativeLibrary result = library_;
  39   library_ = nullptr;
  40   return result;
  41 }
  42
  43 }  // namespace base