1 files changed, 202 insertions, 0 deletions
diff --git a/Source/WebKit2/Platform/gtk/WorkQueueGtk.cpp b/Source/WebKit2/Platform/gtk/WorkQueueGtk.cpp
new file mode 100644
index 0000000..995b531
--- /dev/null
+++ b/Source/WebKit2/Platform/gtk/WorkQueueGtk.cpp
@@ -0,0 +1,202 @@
+/*
+ * Copyright (C) 2010 Apple Inc. All rights reserved.
+ * Portions Copyright (c) 2010 Motorola Mobility, Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "WorkQueue.h"
+
+#include "NotImplemented.h"
+#include "WKBase.h"
+#include <glib.h>
+
+// WorkQueue::EventSource
+class WorkQueue::EventSource {
+public:
+    EventSource(GSource* dispatchSource, PassOwnPtr<WorkItem> workItem, WorkQueue* workQueue)
+        : m_dispatchSource(dispatchSource)
+        , m_workItem(workItem)
+        , m_workQueue(workQueue)
+    {
+    }
+
+    GSource* dispatchSource() { return m_dispatchSource; }
+
+    static gboolean performWorkOnce(EventSource* eventSource)
+    {
+        ASSERT(eventSource);
+        WorkQueue* queue = eventSource->m_workQueue;
+        {
+            MutexLocker locker(queue->m_isValidMutex);
+            if (!queue->m_isValid)
+                return FALSE;
+        }
+
+        eventSource->m_workItem->execute();
+        return FALSE;
+    }
+
+    static gboolean performWork(GIOChannel* channel, GIOCondition condition, EventSource* eventSource) 
+    {
+        ASSERT(eventSource);
+
+        if (!(condition & G_IO_IN) && !(condition & G_IO_HUP) && !(condition & G_IO_ERR))
+            return FALSE;
+
+        WorkQueue* queue = eventSource->m_workQueue;
+        {
+            MutexLocker locker(queue->m_isValidMutex);
+            if (!queue->m_isValid)
+                return FALSE;
+        }
+
+        eventSource->m_workItem->execute();
+
+        if ((condition & G_IO_HUP) || (condition & G_IO_ERR))
+            return FALSE;
+
+        return TRUE;
+    }
+    
+    static void deleteEventSource(EventSource* eventSource) 
+    {
+        ASSERT(eventSource);
+        delete eventSource;
+    }
+   
+public:
+    GSource* m_dispatchSource;
+    PassOwnPtr<WorkItem> m_workItem;
+    WorkQueue* m_workQueue;
+};
+
+// WorkQueue
+void WorkQueue::platformInitialize(const char* name)
+{
+    m_eventContext = g_main_context_new();
+    ASSERT(m_eventContext);
+    m_eventLoop = g_main_loop_new(m_eventContext, FALSE);
+    ASSERT(m_eventLoop);
+    m_workQueueThread = createThread(reinterpret_cast<WTF::ThreadFunction>(&WorkQueue::startWorkQueueThread), this, name);
+}
+
+void WorkQueue::platformInvalidate()
+{
+    MutexLocker locker(m_eventLoopLock);
+
+    if (m_eventLoop) {
+        if (g_main_loop_is_running(m_eventLoop))
+            g_main_loop_quit(m_eventLoop);
+
+        g_main_loop_unref(m_eventLoop);
+        m_eventLoop = 0;
+    }
+
+    if (m_eventContext) {
+        g_main_context_unref(m_eventContext);
+        m_eventContext = 0;
+    }
+}
+
+void* WorkQueue::startWorkQueueThread(WorkQueue* workQueue)
+{
+    workQueue->workQueueThreadBody();
+    return 0;
+}
+
+void WorkQueue::workQueueThreadBody()
+{
+    g_main_loop_run(m_eventLoop);
+}
+
+void WorkQueue::registerEventSourceHandler(int fileDescriptor, int condition, PassOwnPtr<WorkItem> item)
+{
+    GIOChannel* channel = g_io_channel_unix_new(fileDescriptor);
+    ASSERT(channel);
+    GSource* dispatchSource = g_io_create_watch(channel, static_cast<GIOCondition>(condition));
+    ASSERT(dispatchSource);
+    EventSource* eventSource = new EventSource(dispatchSource, item, this);
+    ASSERT(eventSource);
+
+    g_source_set_callback(dispatchSource, reinterpret_cast<GSourceFunc>(&WorkQueue::EventSource::performWork), 
+        eventSource, reinterpret_cast<GDestroyNotify>(&WorkQueue::EventSource::deleteEventSource));
+
+    // Set up the event sources under the mutex since this is shared across multiple threads.
+    {
+        MutexLocker locker(m_eventSourcesLock);
+        ASSERT(!m_eventSources.contains(fileDescriptor));
+        Vector<EventSource*> sources;
+        EventSourceIterator it = m_eventSources.find(fileDescriptor);
+        if (it != m_eventSources.end()) 
+            sources = it->second;
+
+        sources.append(eventSource);
+        m_eventSources.set(fileDescriptor, sources);
+    }
+
+    // Attach the event source to the GMainContext under the mutex since this is shared across multiple threads.
+    {
+        MutexLocker locker(m_eventLoopLock);
+        g_source_attach(dispatchSource, m_eventContext);
+    }
+}
+
+void WorkQueue::unregisterEventSourceHandler(int fileDescriptor)
+{
+    ASSERT(fileDescriptor);
+    
+    MutexLocker locker(m_eventSourcesLock);
+    
+    EventSourceIterator it = m_eventSources.find(fileDescriptor);
+    ASSERT(it != m_eventSources.end());
+    ASSERT(m_eventSources.contains(fileDescriptor));
+
+    if (it != m_eventSources.end()) {
+        Vector<EventSource*> sources = it->second;
+        for (unsigned i = 0; i < sources.size(); i++)
+            g_source_destroy(sources[i]->dispatchSource());
+
+        m_eventSources.remove(it);
+    }
+}
+
+void WorkQueue::scheduleWork(PassOwnPtr<WorkItem> item)
+{
+    GSource* dispatchSource = g_timeout_source_new(0);
+    ASSERT(dispatchSource);
+    EventSource* eventSource = new EventSource(dispatchSource, item, this);
+    
+    g_source_set_callback(dispatchSource, 
+                          reinterpret_cast<GSourceFunc>(&WorkQueue::EventSource::performWorkOnce), 
+                          eventSource, 
+                          reinterpret_cast<GDestroyNotify>(&WorkQueue::EventSource::deleteEventSource));
+    {
+        MutexLocker locker(m_eventLoopLock);
+        g_source_attach(dispatchSource, m_eventContext);
+    }
+}
+
+void WorkQueue::scheduleWorkAfterDelay(PassOwnPtr<WorkItem>, double)
+{
+    notImplemented();
+}