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 #ifndef CONTENT_PUBLIC_UTILITY_UTILITY_THREAD_H_ 6 #define CONTENT_PUBLIC_UTILITY_UTILITY_THREAD_H_ 7 8 #include "base/basictypes.h" 9 #include "content/common/content_export.h" 10 #include "ipc/ipc_sender.h" 11 12 #if defined(OS_WIN) 13 #include <windows.h> 14 #endif 15 16 namespace content { 17 18 class CONTENT_EXPORT UtilityThread : public IPC::Sender { 19 public: 20 // Returns the one utility thread for this process. Note that this can only 21 // be accessed when running on the utility thread itself. 22 static UtilityThread* Get(); 23 24 UtilityThread(); 25 virtual ~UtilityThread(); 26 27 // Releases the process if we are not (or no longer) in batch mode. 28 virtual void ReleaseProcessIfNeeded() = 0; 29 30 #if defined(OS_WIN) 31 // Request that the given font be loaded by the browser so it's cached by the 32 // OS. Please see ChildProcessHost::PreCacheFont for details. 33 virtual void PreCacheFont(const LOGFONT& log_font) = 0; 34 35 // Release cached font. 36 virtual void ReleaseCachedFonts() = 0; 37 #endif 38 }; 39 40 } // namespace content 41 42 #endif // CONTENT_PUBLIC_UTILITY_UTILITY_THREAD_H_ 43