}
}
-unsigned Writer::beginEnter(const FunctionSig *sig) {
+unsigned Writer::beginEnter(const FunctionSig *sig, unsigned thread_id) {
_writeByte(trace::EVENT_ENTER);
+ _writeUInt(thread_id);
_writeUInt(sig->id);
if (!lookup(functions, sig->id)) {
_writeString(sig->name);