added CreateFromIThread. r:valeski@netscape.com

git-svn-id: svn://10.0.0.236/trunk@51156 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/xpcom/threads/nsEventQueueService.cpp

@@ -21,6 +21,7 @@
 #include "prmon.h"
 #include "nsComponentManager.h"
 #include "nsIEventQueue.h"
+#include "nsIThread.h"
 #include "nsPIEventQueueChain.h"
 
 static NS_DEFINE_CID(kEventQueueCID, NS_EVENTQUEUE_CID);
@@ -208,9 +209,31 @@ NS_IMPL_ISUPPORTS1(nsEventQueueServiceImpl,nsIEventQueueService)
 
 NS_IMETHODIMP
 nsEventQueueServiceImpl::CreateThreadEventQueue(void)
+{
+  return CreateEventQueue(PR_GetCurrentThread());
+}
+
+NS_IMETHODIMP
+nsEventQueueServiceImpl::CreateFromIThread(
+    nsIThread *aThread, nsIEventQueue **aResult)
+{
+  nsresult rv;
+  PRThread *prThread;
+
+  rv = aThread->GetPRThread(&prThread);
+  if (NS_SUCCEEDED(rv)) {
+    rv = CreateEventQueue(prThread); // addrefs
+    if (NS_SUCCEEDED(rv))
+      rv = GetThreadEventQueue(prThread, aResult); // doesn't addref
+  }
+  return rv;
+}
+
+NS_IMETHODIMP
+nsEventQueueServiceImpl::CreateEventQueue(PRThread *aThread)
 {
   nsresult rv = NS_OK;
-  ThreadKey  key(PR_GetCurrentThread());
+  ThreadKey  key(aThread);
   EventQueueEntry* evQueueEntry;
 
   /* Enter the lock which protects the EventQ hashtable... */