1 /* 2 * Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 // no precompiled headers 26 #include "runtime/atomic.hpp" 27 #include "runtime/handles.inline.hpp" 28 #include "runtime/mutexLocker.hpp" 29 #include "runtime/os.hpp" 30 #include "runtime/osThread.hpp" 31 #include "runtime/safepoint.hpp" 32 #include "runtime/vmThread.hpp" 33 34 #include <signal.h> 35 36 // *************************************************************** 37 // Platform dependent initialization and cleanup 38 // *************************************************************** 39 40 void OSThread::pd_initialize() { 41 _thread_id = 0; 42 sigemptyset(&_caller_sigmask); 43 44 _vm_created_thread = false; 45 } 46 47 void OSThread::pd_destroy() { 48 } 49 50 // copied from synchronizer.cpp 51 52 void OSThread::handle_spinlock_contention(int tries) { 53 if (NoYieldsInMicrolock) return; 54 55 if (tries > 10) { 56 os::yield_all(tries); // Yield to threads of any priority 57 } else if (tries > 5) { 58 os::yield(); // Yield to threads of same or higher priority 59 } 60 } 61 62 void OSThread::SR_handler(Thread* thread, ucontext_t* uc) { 63 os::Solaris::SR_handler(thread, uc); 64 }