1 /* 2 * Copyright (c) 1997, 2019, 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 #ifndef OS_SOLARIS_OSTHREAD_SOLARIS_HPP 26 #define OS_SOLARIS_OSTHREAD_SOLARIS_HPP 27 28 // This is embedded via include into the class OSThread 29 public: 30 typedef thread_t thread_id_t; 31 32 private: 33 uint _lwp_id; // lwp ID, only used with bound threads 34 int _native_priority; // Saved native priority when starting 35 // a bound thread 36 sigset_t _caller_sigmask; // Caller's signal mask 37 bool _vm_created_thread; // true if the VM created this thread, 38 // false if primary thread or attached thread 39 public: 40 uint lwp_id() const { return _lwp_id; } 41 int native_priority() const { return _native_priority; } 42 43 // Set and get state of _vm_created_thread flag 44 void set_vm_created() { _vm_created_thread = true; } 45 bool is_vm_created() { return _vm_created_thread; } 46 47 // Methods to save/restore caller's signal mask 48 sigset_t caller_sigmask() const { return _caller_sigmask; } 49 void set_caller_sigmask(sigset_t sigmask) { _caller_sigmask = sigmask; } 50 51 #ifndef PRODUCT 52 // Used for debugging, return a unique integer for each thread. 53 int thread_identifier() const { return _thread_id; } 54 #endif 55 #ifdef ASSERT 56 // On solaris reposition can fail in two ways: 57 // 1: a mismatched pc, because signal is delivered too late, target thread 58 // is resumed. 59 // 2: on a timeout where signal is lost, target thread is resumed. 60 bool valid_reposition_failure() { 61 // only 1 and 2 can happen and we can handle both of them 62 return true; 63 } 64 #endif 65 void set_lwp_id(uint id) { _lwp_id = id; } 66 void set_native_priority(int prio) { _native_priority = prio; } 67 68 public: 69 os::SuspendResume sr; 70 71 private: 72 ucontext_t* _ucontext; 73 74 public: 75 ucontext_t* ucontext() const { return _ucontext; } 76 void set_ucontext(ucontext_t* ptr) { _ucontext = ptr; } 77 static void SR_handler(Thread* thread, ucontext_t* uc); 78 79 // *************************************************************** 80 // Platform dependent initialization and cleanup 81 // *************************************************************** 82 83 private: 84 85 void pd_initialize(); 86 void pd_destroy(); 87 88 #endif // OS_SOLARIS_OSTHREAD_SOLARIS_HPP