Teach Connection how to handle a slow receiver

Fixes <http://webkit.org/b/42667> Assertion in
Connection::sendOutgoingMessage when browser or web process is paused

Reviewed by Anders Carlsson.

* Platform/CoreIPC/win/ConnectionWin.cpp:
(CoreIPC::Connection::sendOutgoingMessage): If WriteFile returns FALSE
and the last error is ERROR_IO_PENDING, Windows will write the data as
soon as the current write operation is completed. We don't need to do
anything special in this case, so there's no need to assert about it.

Canonical link: https://commits.webkit.org/54614@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@63776 268f45cc-cd09-0410-ab3c-d52691b4dbfc

WebKit2/ChangeLog

@@ -1,3 +1,18 @@
+2010-07-20  Adam Roben  <aroben@apple.com>
+
+        Teach Connection how to handle a slow receiver
+
+        Fixes <http://webkit.org/b/42667> Assertion in
+        Connection::sendOutgoingMessage when browser or web process is paused
+
+        Reviewed by Anders Carlsson.
+
+        * Platform/CoreIPC/win/ConnectionWin.cpp:
+        (CoreIPC::Connection::sendOutgoingMessage): If WriteFile returns FALSE
+        and the last error is ERROR_IO_PENDING, Windows will write the data as
+        soon as the current write operation is completed. We don't need to do
+        anything special in this case, so there's no need to assert about it.
+
 2010-07-20  Anders Carlsson  <andersca@apple.com>
 
         Reviewed by Dan Bernstein.

WebKit2/Platform/CoreIPC/win/ConnectionWin.cpp

@@ -215,6 +215,11 @@ void Connection::sendOutgoingMessage(MessageID messageID, PassOwnPtr<ArgumentEnc
     }
 
     DWORD error = ::GetLastError();
+    if (error == ERROR_IO_PENDING) {
+        // The message will be sent soon.
+        return;
+    }
+
     ASSERT_NOT_REACHED();
 }