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/*
* Copyright (C) 2017 Igalia, S.L.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#pragma once
#if USE(GLIB)
namespace WTF {
#if PLATFORM(GTK)
// This is a global enum to define priorities used by GLib run loop sources.
// In GLib, priorities are represented by an integer where lower values mean
// higher priority. The following macros are defined in GLib:
// G_PRIORITY_LOW = 300
// G_PRIORITY_DEFAULT_IDLE = 200
// G_PRIORITY_HIGH_IDLE = 100
// G_PRIORITY_DEFAULT = 0
// G_PRIORITY_HIGH = -100
// We don't use those macros here to avoid having to include glib header only
// for this. But we should take into account that GLib uses G_PRIORITY_DEFAULT
// for timeout sources and G_PRIORITY_DEFAULT_IDLE for idle sources.
// Changes in these priorities can have a huge impact in performance, and in
// the correctness too, so be careful when changing them.
enum RunLoopSourcePriority {
// RunLoop::dispatch().
RunLoopDispatcher = 100,
// RunLoopTimer priority by default. It can be changed with RunLoopTimer::setPriority().
RunLoopTimer = 0,
// Garbage collector timers.
JavascriptTimer = 200,
// Memory pressure monitor.
MemoryPressureHandlerTimer = -100,
// WebCore timers.
MainThreadSharedTimer = 100,
// Used for timers that discard resources like backing store, buffers, etc.
ReleaseUnusedResourcesTimer = 200,
// Rendering timer in the threaded compositor.
CompositingThreadUpdateTimer = 100,
// Layer flush.
LayerFlushTimer = 100,
// DisplayRefreshMonitor timer, should have the same value as the LayerFlushTimer.
DisplayRefreshMonitorTimer = 100,
// Rendering timer in the main thread when accelerated compositing is not used.
NonAcceleratedDrawingTimer = 100,
// Async IO network callbacks.
AsyncIONetwork = 100,
};
#else
enum RunLoopSourcePriority {
RunLoopDispatcher = 0,
RunLoopTimer = 0,
MemoryPressureHandlerTimer = -10,
JavascriptTimer = 10,
MainThreadSharedTimer = 10,
LayerFlushTimer = 0,
DisplayRefreshMonitorTimer = 0,
CompositingThreadUpdateTimer = 0,
ReleaseUnusedResourcesTimer = 0,
AsyncIONetwork = 10,
};
#endif
} // namespace WTF
using WTF::RunLoopSourcePriority;
#endif // USE(GLIB)
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