Merge webkit.org at r58033 : Initial merge by git

Change-Id: If006c38561af287c50cd578d251629b51e4d8cd1

1 files changed, 55 insertions, 0 deletions

diff --git a/WebKitTools/Scripts/webkitpy/common/thread/threadedmessagequeue.py b/WebKitTools/Scripts/webkitpy/common/thread/threadedmessagequeue.py
new file mode 100644
index 0000000..6cb6f8c
--- /dev/null
+++ b/WebKitTools/Scripts/webkitpy/common/thread/threadedmessagequeue.py
@@ -0,0 +1,55 @@
+# Copyright (c) 2010 Google 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:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * 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.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+# OWNER OR 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.
+
+import threading
+
+
+class ThreadedMessageQueue(object):
+    def __init__(self):
+        self._messages = []
+        self._is_running = True
+        self._lock = threading.Lock()
+
+    def post(self, message):
+        self._lock.acquire()
+        self._messages.append(message)
+        self._lock.release()
+
+    def stop(self):
+        self._lock.acquire()
+        self._is_running = False
+        self._lock.release()
+
+    def take_all(self):
+        self._lock.acquire()
+        messages = self._messages
+        is_running = self._is_running
+        self._messages = []
+        self._lock.release()
+        return (messages, is_running)
+