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