Make readAvailable() non-recursive.

Thane apparently has a maximum stack depth of 64, and this is quickly getting eaten up by readAvailable() when lots of frames are sent down the tubes simultaneously. (mxmlc doesn't seem to optimize tail-recursive functions.)


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5360 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/as/com/threerings/io/FrameReader.as

@@ -62,13 +62,9 @@ public class FrameReader extends EventDispatcher
             Log.getLog(this).debug(
                 "socketHasData(" + _socket.bytesAvailable + ")");
         }
+
+        while (_socket.bytesAvailable >= HEADER_SIZE) {
             if (_curData == null) {
-            if (_socket.bytesAvailable < HEADER_SIZE) {
-                // if there are less bytes available than a header, let's
-                // just leave them on the socket until we can read the length
-                // all at once
-                return;
-            }
                 // the length specified is the length of the entire frame,
                 // including the length of the bytes used to encode the length.
                 // (I think this is pretty silly).
@@ -80,8 +76,7 @@ public class FrameReader extends EventDispatcher
             }
 
             // read bytes: either as much as possible or up to the end of the frame
-        var toRead :int = Math.min(_length - _curData.length,
-            _socket.bytesAvailable);
+            var toRead :int = Math.min(_length - _curData.length, _socket.bytesAvailable);
             // Just in case, if the amount needed is 0, don't do anything!
             // Passing 0 causes it to read *all available bytes*.
             if (toRead != 0) {
@@ -96,11 +91,6 @@ public class FrameReader extends EventDispatcher
                 }
                 dispatchEvent(new FrameAvailableEvent(_curData));
                 _curData = null; // clear, so we know we need to first read length
-
-            // there's a good chance there's more on the socket, recurse
-            // now to read it
-            if (_socket.bytesAvailable >= HEADER_SIZE) {
-                readAvailable();
             }
         }
     }