Define MessagePumpDefault and use it to implement MessageLoop on non-Windows

platforms.  This is actually just a first-step toward the real fix which is to
use MessagePumpDefault on all platforms on non-UI and non-IO threads.

This CL also fixes some GCC compilation errors.  I renamed MessageLoopOwnable
to TaskBase, which seems more appropriate since a MessageLoopOwnable has a
next Task pointer and clearly is only meaningful in the context of Task.  (I
wonder why it is even a separate class, but that is another issue.)  I had to
make the next_task / set_next_task methods public since they are used by an
inner class of MessageLoop.  Perhaps those inner classes should be made into
top-level classes, but that seemed like too much to change at this time.

R=jar,mmentovai

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@1045 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 122 insertions, 0 deletions

diff --git a/base/message_pump_default.h b/base/message_pump_default.h
new file mode 100644
index 0000000..1c1af71
--- /dev/null
+++ b/base/message_pump_default.h
@@ -0,0 +1,122 @@
+// Copyright 2008, 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.
+
+#ifndef BASE_MESSAGE_PUMP_DEFAULT_H_
+#define BASE_MESSAGE_PUMP_DEFAULT_H_
+
+#include "base/message_pump.h"
+#include "base/waitable_event.h"
+
+namespace base {
+
+class MessagePumpDefault : public MessagePump {
+ public:
+  MessagePumpDefault();
+  ~MessagePumpDefault() {}
+
+  // MessagePump methods:
+  virtual void Run(Delegate* delegate);
+  virtual void Quit();
+  virtual void ScheduleWork();
+  virtual void ScheduleDelayedWork(const TimeDelta& delay);
+
+ private:
+  // This flag is set to false when Run should return.
+  bool keep_running_;
+
+  // Used to sleep until there is more work to do.
+  WaitableEvent event_;
+
+  DISALLOW_COPY_AND_ASSIGN(MessagePumpDefault);
+};
+
+}  // namespace base
+
+#endif  // BASE_MESSAGE_PUMP_DEFAULT_H_
+// Copyright 2008, 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.
+
+#ifndef BASE_MESSAGE_PUMP_DEFAULT_H_
+#define BASE_MESSAGE_PUMP_DEFAULT_H_
+
+#include "base/message_pump.h"
+#include "base/waitable_event.h"
+
+namespace base {
+
+class MessagePumpDefault : public MessagePump {
+ public:
+  MessagePumpDefault();
+  ~MessagePumpDefault() {}
+
+  // MessagePump methods:
+  virtual void Run(Delegate* delegate);
+  virtual void Quit();
+  virtual void ScheduleWork();
+  virtual void ScheduleDelayedWork(const TimeDelta& delay);
+
+ private:
+  // This flag is set to false when Run should return.
+  bool keep_running_;
+
+  // Used to sleep until there is more work to do.
+  WaitableEvent event_;
+
+  DISALLOW_COPY_AND_ASSIGN(MessagePumpDefault);
+};
+
+}  // namespace base
+
+#endif  // BASE_MESSAGE_PUMP_DEFAULT_H_