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      1 // Copyright (c) 2012 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 "ui/base/win/scoped_ole_initializer.h"
      6 
      7 #include "base/logging.h"
      8 
      9 namespace ui {
     10 
     11 ScopedOleInitializer::ScopedOleInitializer()
     12     :
     13 #ifndef NDEBUG
     14       // Using the windows API directly to avoid dependency on platform_thread.
     15       thread_id_(GetCurrentThreadId()),
     16 #endif
     17       hr_(OleInitialize(NULL)) {
     18 #ifndef NDEBUG
     19   if (hr_ == S_FALSE) {
     20     LOG(ERROR) << "Multiple OleInitialize() calls for thread " << thread_id_;
     21   } else {
     22     DCHECK_NE(OLE_E_WRONGCOMPOBJ, hr_) << "Incompatible DLLs on machine";
     23     DCHECK_NE(RPC_E_CHANGED_MODE, hr_) << "Invalid COM thread model change";
     24   }
     25 #endif
     26 }
     27 
     28 ScopedOleInitializer::~ScopedOleInitializer() {
     29 #ifndef NDEBUG
     30   DCHECK_EQ(thread_id_, GetCurrentThreadId());
     31 #endif
     32   if (SUCCEEDED(hr_))
     33     OleUninitialize();
     34 }
     35 
     36 }  // namespace ui
     37