Provide an iOS message pump for IO implementation.

base/message_loop.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/message_loop.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/debug/alias.h"
 #include "base/debug/trace_event.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop_proxy_impl.h"
 #include "base/message_pump_default.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/statistics_recorder.h"
 #include "base/run_loop.h"
 #include "base/third_party/dynamic_annotations/dynamic_annotations.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/threading/thread_local.h"
 #include "base/time.h"
 #include "base/tracked_objects.h"
 
 #if defined(OS_MACOSX)
 #include "base/message_pump_mac.h"
 #endif
-#if defined(OS_POSIX)
+#if defined(OS_POSIX) && !defined(OS_IOS)
 #include "base/message_pump_libevent.h"
 #endif
 #if defined(OS_ANDROID)
 #include "base/message_pump_android.h"
 #endif
 
 #if defined(TOOLKIT_GTK)
 #include <gdk/gdk.h>
 #include <gdk/gdkx.h>
 #endif
@@ skipping 109 matching lines @@
   lazy_tls_ptr.Pointer()->Set(this);
 
   message_loop_proxy_ = new base::MessageLoopProxyImpl();
   thread_task_runner_handle_.reset(
       new base::ThreadTaskRunnerHandle(message_loop_proxy_));
 
 // TODO(rvargas): Get rid of the OS guards.
 #if defined(OS_WIN)
 #define MESSAGE_PUMP_UI new base::MessagePumpForUI()
 #define MESSAGE_PUMP_IO new base::MessagePumpForIO()
+#elif defined(OS_IOS)
+#define MESSAGE_PUMP_UI base::MessagePumpMac::Create()
+#define MESSAGE_PUMP_IO new base::MessagePumpIOSForIO()
 #elif defined(OS_MACOSX)
 #define MESSAGE_PUMP_UI base::MessagePumpMac::Create()
 #define MESSAGE_PUMP_IO new base::MessagePumpLibevent()
 #elif defined(OS_NACL)
 // Currently NaCl doesn't have a UI MessageLoop.
 // TODO(abarth): Figure out if we need this.
 #define MESSAGE_PUMP_UI NULL
 // ipc_channel_nacl.cc uses a worker thread to do socket reads currently, and
 // doesn't require extra support for watching file descriptors.
 #define MESSAGE_PUMP_IO new base::MessagePumpDefault();
@@ skipping 599 matching lines @@
 }
 
 bool MessageLoopForIO::RegisterJobObject(HANDLE job, IOHandler* handler) {
   return pump_io()->RegisterJobObject(job, handler);
 }
 
 bool MessageLoopForIO::WaitForIOCompletion(DWORD timeout, IOHandler* filter) {
   return pump_io()->WaitForIOCompletion(timeout, filter);
 }
 
+#elif defined(OS_IOS)
+
+bool MessageLoopForIO::WatchFileDescriptor(int fd,
+                                           bool persistent,
+                                           Mode mode,
+                                           FileDescriptorWatcher *controller,
+                                           Watcher *delegate) {
+  return pump_io()->WatchFileDescriptor(
+      fd,
+      persistent,
+      static_cast<base::MessagePumpIOSForIO::Mode>(mode),

[Mark Mentovai, 2012/11/20 22:29:27]

No cast, the callee should be accepting int. See the next comment.

[blundell, 2012/11/21 16:56:52]

Done.

+      controller,
+      delegate);
+}
+
 #elif defined(OS_POSIX) && !defined(OS_NACL)
 
 bool MessageLoopForIO::WatchFileDescriptor(int fd,
                                            bool persistent,
                                            Mode mode,
                                            FileDescriptorWatcher *controller,
                                            Watcher *delegate) {
   return pump_libevent()->WatchFileDescriptor(
       fd,
       persistent,
       static_cast<base::MessagePumpLibevent::Mode>(mode),
       controller,
       delegate);
 }
 
 #endif