42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
// Copyright (c) 2018 The Chromium Embedded Framework 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 CEF_TESTS_CEFCLIENT_BROWSER_UTIL_GTK_H_
|
|
#define CEF_TESTS_CEFCLIENT_BROWSER_UTIL_GTK_H_
|
|
#pragma once
|
|
|
|
#include "include/base/cef_macros.h"
|
|
#include "include/base/cef_platform_thread.h"
|
|
|
|
namespace client {
|
|
|
|
// Scoped helper that manages the global GDK lock by calling gdk_threads_enter()
|
|
// and gdk_threads_leave(). The lock is not reentrant so this helper implements
|
|
// additional checking to avoid deadlocks.
|
|
//
|
|
// When using GTK in multi-threaded mode you must do the following:
|
|
// 1. Call gdk_threads_init() before making any other GTK/GDK/GLib calls.
|
|
// 2. Acquire the global lock before making any GTK/GDK calls, and release the
|
|
// lock afterwards. This should only be done with callbacks that do not
|
|
// originate from GTK signals (because those callbacks already hold the
|
|
// lock).
|
|
//
|
|
// See https://www.geany.org/manual/gtk/gtk-faq/x482.html for more information.
|
|
class ScopedGdkThreadsEnter {
|
|
public:
|
|
ScopedGdkThreadsEnter();
|
|
~ScopedGdkThreadsEnter();
|
|
|
|
private:
|
|
bool take_lock_;
|
|
|
|
static base::PlatformThreadId locked_thread_;
|
|
|
|
DISALLOW_COPY_AND_ASSIGN(ScopedGdkThreadsEnter);
|
|
};
|
|
|
|
} // namespace client
|
|
|
|
#endif // CEF_TESTS_CEFCLIENT_BROWSER_UTIL_GTK_H_
|