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src/os/solaris/vm/osThread_solaris.hpp@f90c822e73f8 (annotated)
src/os/solaris/vm/osThread_solaris.hpp
Wed, 27 Apr 2016 01:25:04 +0800
- author
- aoqi
- date
- Wed, 27 Apr 2016 01:25:04 +0800
- changeset 0
- f90c822e73f8
- child 6876
- 710a3c8b516e
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http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. |
| aoqi@0 | 8 | * |
| aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 13 | * accompanied this code). |
| aoqi@0 | 14 | * |
| aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 18 | * |
| aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 21 | * questions. |
| aoqi@0 | 22 | * |
| aoqi@0 | 23 | */ |
| aoqi@0 | 24 | |
| aoqi@0 | 25 | #ifndef OS_SOLARIS_VM_OSTHREAD_SOLARIS_HPP |
| aoqi@0 | 26 | #define OS_SOLARIS_VM_OSTHREAD_SOLARIS_HPP |
| aoqi@0 | 27 | |
| aoqi@0 | 28 | // This is embedded via include into the class OSThread |
| aoqi@0 | 29 | public: |
| aoqi@0 | 30 | typedef thread_t thread_id_t; |
| aoqi@0 | 31 | |
| aoqi@0 | 32 | private: |
| aoqi@0 | 33 | uint _lwp_id; // lwp ID, only used with bound threads |
| aoqi@0 | 34 | int _native_priority; // Saved native priority when starting |
| aoqi@0 | 35 | // a bound thread |
| aoqi@0 | 36 | sigset_t _caller_sigmask; // Caller's signal mask |
| aoqi@0 | 37 | bool _vm_created_thread; // true if the VM created this thread, |
| aoqi@0 | 38 | // false if primary thread or attached thread |
| aoqi@0 | 39 | public: |
| aoqi@0 | 40 | uint lwp_id() const { return _lwp_id; } |
| aoqi@0 | 41 | int native_priority() const { return _native_priority; } |
| aoqi@0 | 42 | |
| aoqi@0 | 43 | // Set and get state of _vm_created_thread flag |
| aoqi@0 | 44 | void set_vm_created() { _vm_created_thread = true; } |
| aoqi@0 | 45 | bool is_vm_created() { return _vm_created_thread; } |
| aoqi@0 | 46 | |
| aoqi@0 | 47 | // Methods to save/restore caller's signal mask |
| aoqi@0 | 48 | sigset_t caller_sigmask() const { return _caller_sigmask; } |
| aoqi@0 | 49 | void set_caller_sigmask(sigset_t sigmask) { _caller_sigmask = sigmask; } |
| aoqi@0 | 50 | |
| aoqi@0 | 51 | #ifndef PRODUCT |
| aoqi@0 | 52 | // Used for debugging, return a unique integer for each thread. |
| aoqi@0 | 53 | int thread_identifier() const { return _thread_id; } |
| aoqi@0 | 54 | #endif |
| aoqi@0 | 55 | #ifdef ASSERT |
| aoqi@0 | 56 | // On solaris reposition can fail in two ways: |
| aoqi@0 | 57 | // 1: a mismatched pc, because signal is delivered too late, target thread |
| aoqi@0 | 58 | // is resumed. |
| aoqi@0 | 59 | // 2: on a timeout where signal is lost, target thread is resumed. |
| aoqi@0 | 60 | bool valid_reposition_failure() { |
| aoqi@0 | 61 | // only 1 and 2 can happen and we can handle both of them |
| aoqi@0 | 62 | return true; |
| aoqi@0 | 63 | } |
| aoqi@0 | 64 | #endif |
| aoqi@0 | 65 | void set_lwp_id(uint id) { _lwp_id = id; } |
| aoqi@0 | 66 | void set_native_priority(int prio) { _native_priority = prio; } |
| aoqi@0 | 67 | |
| aoqi@0 | 68 | // *************************************************************** |
| aoqi@0 | 69 | // interrupt support. interrupts (using signals) are used to get |
| aoqi@0 | 70 | // the thread context (get_thread_pc), to set the thread context |
| aoqi@0 | 71 | // (set_thread_pc), and to implement java.lang.Thread.interrupt. |
| aoqi@0 | 72 | // *************************************************************** |
| aoqi@0 | 73 | |
| aoqi@0 | 74 | public: |
| aoqi@0 | 75 | os::SuspendResume sr; |
| aoqi@0 | 76 | |
| aoqi@0 | 77 | private: |
| aoqi@0 | 78 | ucontext_t* _ucontext; |
| aoqi@0 | 79 | |
| aoqi@0 | 80 | public: |
| aoqi@0 | 81 | ucontext_t* ucontext() const { return _ucontext; } |
| aoqi@0 | 82 | void set_ucontext(ucontext_t* ptr) { _ucontext = ptr; } |
| aoqi@0 | 83 | static void SR_handler(Thread* thread, ucontext_t* uc); |
| aoqi@0 | 84 | |
| aoqi@0 | 85 | // *************************************************************** |
| aoqi@0 | 86 | // java.lang.Thread.interrupt state. |
| aoqi@0 | 87 | // *************************************************************** |
| aoqi@0 | 88 | |
| aoqi@0 | 89 | private: |
| aoqi@0 | 90 | |
| aoqi@0 | 91 | JavaThreadState _saved_interrupt_thread_state; // the thread state before a system call -- restored afterward |
| aoqi@0 | 92 | |
| aoqi@0 | 93 | public: |
| aoqi@0 | 94 | |
| aoqi@0 | 95 | |
| aoqi@0 | 96 | JavaThreadState saved_interrupt_thread_state() { return _saved_interrupt_thread_state; } |
| aoqi@0 | 97 | void set_saved_interrupt_thread_state(JavaThreadState state) { _saved_interrupt_thread_state = state; } |
| aoqi@0 | 98 | |
| aoqi@0 | 99 | static void handle_spinlock_contention(int tries); // Used for thread local eden locking |
| aoqi@0 | 100 | |
| aoqi@0 | 101 | // *************************************************************** |
| aoqi@0 | 102 | // Platform dependent initialization and cleanup |
| aoqi@0 | 103 | // *************************************************************** |
| aoqi@0 | 104 | |
| aoqi@0 | 105 | private: |
| aoqi@0 | 106 | |
| aoqi@0 | 107 | void pd_initialize(); |
| aoqi@0 | 108 | void pd_destroy(); |
| aoqi@0 | 109 | |
| aoqi@0 | 110 | #endif // OS_SOLARIS_VM_OSTHREAD_SOLARIS_HPP |
