--- old/src/hotspot/os/solaris/osThread_solaris.cpp	2020-05-20 18:09:31.813052962 -0700
+++ /dev/null	2020-03-09 18:57:19.455001459 -0700
@@ -1,53 +0,0 @@
-/*
- * Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- *
- */
-
-// no precompiled headers
-#include "runtime/handles.inline.hpp"
-#include "runtime/mutexLocker.hpp"
-#include "runtime/os.hpp"
-#include "runtime/osThread.hpp"
-#include "runtime/safepoint.hpp"
-#include "runtime/vmThread.hpp"
-
-#include <signal.h>
-
- // ***************************************************************
- // Platform dependent initialization and cleanup
- // ***************************************************************
-
-void OSThread::pd_initialize() {
-  _thread_id                         = 0;
-  sigemptyset(&_caller_sigmask);
-
-  _vm_created_thread                 = false;
-}
-
-void OSThread::pd_destroy() {
-}
-
-// copied from synchronizer.cpp
-
-void OSThread::SR_handler(Thread* thread, ucontext_t* uc) {
-  os::Solaris::SR_handler(thread, uc);
-}