1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/os/aix/vm/osThread_aix.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,144 @@
1.4 +/*
1.5 + * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * Copyright 2012, 2013 SAP AG. All rights reserved.
1.7 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.8 + *
1.9 + * This code is free software; you can redistribute it and/or modify it
1.10 + * under the terms of the GNU General Public License version 2 only, as
1.11 + * published by the Free Software Foundation.
1.12 + *
1.13 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.14 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.15 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.16 + * version 2 for more details (a copy is included in the LICENSE file that
1.17 + * accompanied this code).
1.18 + *
1.19 + * You should have received a copy of the GNU General Public License version
1.20 + * 2 along with this work; if not, write to the Free Software Foundation,
1.21 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.22 + *
1.23 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.24 + * or visit www.oracle.com if you need additional information or have any
1.25 + * questions.
1.26 + *
1.27 + */
1.28 +
1.29 +#ifndef OS_AIX_VM_OSTHREAD_AIX_HPP
1.30 +#define OS_AIX_VM_OSTHREAD_AIX_HPP
1.31 +
1.32 + public:
1.33 + typedef pid_t thread_id_t;
1.34 +
1.35 + private:
1.36 + int _thread_type;
1.37 +
1.38 + public:
1.39 +
1.40 + int thread_type() const {
1.41 + return _thread_type;
1.42 + }
1.43 + void set_thread_type(int type) {
1.44 + _thread_type = type;
1.45 + }
1.46 +
1.47 + private:
1.48 +
1.49 + // _pthread_id is the pthread id, which is used by library calls
1.50 + // (e.g. pthread_kill).
1.51 + pthread_t _pthread_id;
1.52 +
1.53 + sigset_t _caller_sigmask; // Caller's signal mask
1.54 +
1.55 + public:
1.56 +
1.57 + // Methods to save/restore caller's signal mask
1.58 + sigset_t caller_sigmask() const { return _caller_sigmask; }
1.59 + void set_caller_sigmask(sigset_t sigmask) { _caller_sigmask = sigmask; }
1.60 +
1.61 +#ifndef PRODUCT
1.62 + // Used for debugging, return a unique integer for each thread.
1.63 + int thread_identifier() const { return _thread_id; }
1.64 +#endif
1.65 +#ifdef ASSERT
1.66 + // We expect no reposition failures so kill vm if we get one.
1.67 + //
1.68 + bool valid_reposition_failure() {
1.69 + return false;
1.70 + }
1.71 +#endif // ASSERT
1.72 + pthread_t pthread_id() const {
1.73 + return _pthread_id;
1.74 + }
1.75 + void set_pthread_id(pthread_t tid) {
1.76 + _pthread_id = tid;
1.77 + }
1.78 +
1.79 + // ***************************************************************
1.80 + // suspension support.
1.81 + // ***************************************************************
1.82 +
1.83 + public:
1.84 + // flags that support signal based suspend/resume on Linux are in a
1.85 + // separate class to avoid confusion with many flags in OSThread that
1.86 + // are used by VM level suspend/resume.
1.87 + os::SuspendResume sr;
1.88 +
1.89 + // _ucontext and _siginfo are used by SR_handler() to save thread context,
1.90 + // and they will later be used to walk the stack or reposition thread PC.
1.91 + // If the thread is not suspended in SR_handler() (e.g. self suspend),
1.92 + // the value in _ucontext is meaningless, so we must use the last Java
1.93 + // frame information as the frame. This will mean that for threads
1.94 + // that are parked on a mutex the profiler (and safepoint mechanism)
1.95 + // will see the thread as if it were still in the Java frame. This
1.96 + // not a problem for the profiler since the Java frame is a close
1.97 + // enough result. For the safepoint mechanism when the give it the
1.98 + // Java frame we are not at a point where the safepoint needs the
1.99 + // frame to that accurate (like for a compiled safepoint) since we
1.100 + // should be in a place where we are native and will block ourselves
1.101 + // if we transition.
1.102 + private:
1.103 + void* _siginfo;
1.104 + ucontext_t* _ucontext;
1.105 + int _expanding_stack; // non zero if manually expanding stack
1.106 + address _alt_sig_stack; // address of base of alternate signal stack
1.107 +
1.108 + public:
1.109 + void* siginfo() const { return _siginfo; }
1.110 + void set_siginfo(void* ptr) { _siginfo = ptr; }
1.111 + ucontext_t* ucontext() const { return _ucontext; }
1.112 + void set_ucontext(ucontext_t* ptr) { _ucontext = ptr; }
1.113 + void set_expanding_stack(void) { _expanding_stack = 1; }
1.114 + void clear_expanding_stack(void) { _expanding_stack = 0; }
1.115 + int expanding_stack(void) { return _expanding_stack; }
1.116 +
1.117 + void set_alt_sig_stack(address val) { _alt_sig_stack = val; }
1.118 + address alt_sig_stack(void) { return _alt_sig_stack; }
1.119 +
1.120 + private:
1.121 + Monitor* _startThread_lock; // sync parent and child in thread creation
1.122 +
1.123 + public:
1.124 +
1.125 + Monitor* startThread_lock() const {
1.126 + return _startThread_lock;
1.127 + }
1.128 +
1.129 + // ***************************************************************
1.130 + // Platform dependent initialization and cleanup
1.131 + // ***************************************************************
1.132 +
1.133 + private:
1.134 +
1.135 + void pd_initialize();
1.136 + void pd_destroy();
1.137 +
1.138 + public:
1.139 +
1.140 + // The last measured values of cpu timing to prevent the "stale
1.141 + // value return" bug in thread_cpu_time.
1.142 + volatile struct {
1.143 + jlong sys;
1.144 + jlong user;
1.145 + } _last_cpu_times;
1.146 +
1.147 +#endif // OS_AIX_VM_OSTHREAD_AIX_HPP
