Provide an iOS message pump for IO implementation.

base/message_loop.cc

Index: base/message_loop.cc
diff --git a/base/message_loop.cc b/base/message_loop.cc
index f4279935227e760f0061025a092ca477ba19b249..5548d759ee68c0d0ace0b63dbe2b8732ad80d909 100644
--- a/base/message_loop.cc
+++ b/base/message_loop.cc
@@ -27,7 +27,7 @@
 #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)
@@ -157,6 +157,9 @@ MessageLoop::MessageLoop(Type type)
 #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()
@@ -776,6 +779,21 @@ 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,