Mercurial > hg > graal-jvmci-8
annotate src/os/bsd/vm/osThread_bsd.hpp @ 6006:0105f367a14c
7160570: Intrinsification support for tracing framework
Reviewed-by: sla, never
| author | rbackman |
|---|---|
| date | Tue, 06 Mar 2012 12:36:59 +0100 |
| parents | 0368109684cb |
| children | 960a442eae91 |
| rev | line source |
|---|---|
| 3960 | 1 /* |
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2 * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved. |
| 3960 | 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_BSD_VM_OSTHREAD_BSD_HPP | |
| 26 #define OS_BSD_VM_OSTHREAD_BSD_HPP | |
| 27 | |
| 28 private: | |
| 29 int _thread_type; | |
| 30 | |
| 31 public: | |
| 32 | |
| 33 int thread_type() const { | |
| 34 return _thread_type; | |
| 35 } | |
| 36 void set_thread_type(int type) { | |
| 37 _thread_type = type; | |
| 38 } | |
| 39 | |
| 40 private: | |
| 41 | |
| 42 #ifdef _ALLBSD_SOURCE | |
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43 |
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44 #ifdef __APPLE__ |
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45 thread_t _thread_id; |
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46 #else |
| 3960 | 47 pthread_t _thread_id; |
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48 #endif |
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49 |
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50 // _pthread_id is the pthread id, which is used by library calls |
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51 // (e.g. pthread_kill). |
| 3960 | 52 pthread_t _pthread_id; |
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53 |
| 3960 | 54 #else |
| 55 // _thread_id is kernel thread id (similar to LWP id on Solaris). Each | |
| 56 // thread has a unique thread_id (BsdThreads or NPTL). It can be used | |
| 57 // to access /proc. | |
| 58 pid_t _thread_id; | |
| 59 | |
| 60 // _pthread_id is the pthread id, which is used by library calls | |
| 61 // (e.g. pthread_kill). | |
| 62 pthread_t _pthread_id; | |
| 63 #endif | |
| 64 | |
| 65 sigset_t _caller_sigmask; // Caller's signal mask | |
| 66 | |
| 67 public: | |
| 68 | |
| 69 // Methods to save/restore caller's signal mask | |
| 70 sigset_t caller_sigmask() const { return _caller_sigmask; } | |
| 71 void set_caller_sigmask(sigset_t sigmask) { _caller_sigmask = sigmask; } | |
| 72 | |
| 73 #ifdef _ALLBSD_SOURCE | |
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74 #ifdef __APPLE__ |
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75 static size_t thread_id_size() { return sizeof(thread_t); } |
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76 thread_t thread_id() const { |
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77 return _thread_id; |
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78 } |
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79 #else |
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80 static size_t thread_id_size() { return sizeof(pthread_t); } |
| 3960 | 81 pthread_t thread_id() const { |
| 82 return _thread_id; | |
| 83 } | |
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84 #endif |
| 3960 | 85 #else |
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86 static size_t thread_id_size() { return sizeof(pid_t); } |
| 3960 | 87 pid_t thread_id() const { |
| 88 return _thread_id; | |
| 89 } | |
| 90 #endif | |
| 91 #ifndef PRODUCT | |
| 92 // Used for debugging, return a unique integer for each thread. | |
| 93 intptr_t thread_identifier() const { return (intptr_t)_pthread_id; } | |
| 94 #endif | |
| 95 #ifdef ASSERT | |
| 96 // We expect no reposition failures so kill vm if we get one. | |
| 97 // | |
| 98 bool valid_reposition_failure() { | |
| 99 return false; | |
| 100 } | |
| 101 #endif // ASSERT | |
| 102 #ifdef _ALLBSD_SOURCE | |
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103 #ifdef __APPLE__ |
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104 void set_thread_id(thread_t id) { |
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105 _thread_id = id; |
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106 } |
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107 #else |
| 3960 | 108 void set_thread_id(pthread_t id) { |
| 109 _thread_id = id; | |
| 110 } | |
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111 #endif |
| 3960 | 112 #else |
| 113 void set_thread_id(pid_t id) { | |
| 114 _thread_id = id; | |
| 115 } | |
| 116 #endif | |
| 117 pthread_t pthread_id() const { | |
| 118 return _pthread_id; | |
| 119 } | |
| 120 void set_pthread_id(pthread_t tid) { | |
| 121 _pthread_id = tid; | |
| 122 } | |
| 123 | |
| 124 // *************************************************************** | |
| 125 // suspension support. | |
| 126 // *************************************************************** | |
| 127 | |
| 128 public: | |
| 129 // flags that support signal based suspend/resume on Bsd are in a | |
| 130 // separate class to avoid confusion with many flags in OSThread that | |
| 131 // are used by VM level suspend/resume. | |
| 132 os::Bsd::SuspendResume sr; | |
| 133 | |
| 134 // _ucontext and _siginfo are used by SR_handler() to save thread context, | |
| 135 // and they will later be used to walk the stack or reposition thread PC. | |
| 136 // If the thread is not suspended in SR_handler() (e.g. self suspend), | |
| 137 // the value in _ucontext is meaningless, so we must use the last Java | |
| 138 // frame information as the frame. This will mean that for threads | |
| 139 // that are parked on a mutex the profiler (and safepoint mechanism) | |
| 140 // will see the thread as if it were still in the Java frame. This | |
| 141 // not a problem for the profiler since the Java frame is a close | |
| 142 // enough result. For the safepoint mechanism when the give it the | |
| 143 // Java frame we are not at a point where the safepoint needs the | |
| 144 // frame to that accurate (like for a compiled safepoint) since we | |
| 145 // should be in a place where we are native and will block ourselves | |
| 146 // if we transition. | |
| 147 private: | |
| 148 void* _siginfo; | |
| 149 ucontext_t* _ucontext; | |
| 150 int _expanding_stack; /* non zero if manually expanding stack */ | |
| 151 address _alt_sig_stack; /* address of base of alternate signal stack */ | |
| 152 | |
| 153 public: | |
| 154 void* siginfo() const { return _siginfo; } | |
| 155 void set_siginfo(void* ptr) { _siginfo = ptr; } | |
| 156 ucontext_t* ucontext() const { return _ucontext; } | |
| 157 void set_ucontext(ucontext_t* ptr) { _ucontext = ptr; } | |
| 158 void set_expanding_stack(void) { _expanding_stack = 1; } | |
| 159 void clear_expanding_stack(void) { _expanding_stack = 0; } | |
| 160 int expanding_stack(void) { return _expanding_stack; } | |
| 161 | |
| 162 void set_alt_sig_stack(address val) { _alt_sig_stack = val; } | |
| 163 address alt_sig_stack(void) { return _alt_sig_stack; } | |
| 164 | |
| 165 private: | |
| 166 Monitor* _startThread_lock; // sync parent and child in thread creation | |
| 167 | |
| 168 public: | |
| 169 | |
| 170 Monitor* startThread_lock() const { | |
| 171 return _startThread_lock; | |
| 172 } | |
| 173 | |
| 174 // *************************************************************** | |
| 175 // Platform dependent initialization and cleanup | |
| 176 // *************************************************************** | |
| 177 | |
| 178 private: | |
| 179 | |
| 180 void pd_initialize(); | |
| 181 void pd_destroy(); | |
| 182 | |
| 183 // Reconciliation History | |
| 184 // osThread_solaris.hpp 1.24 99/08/27 13:11:54 | |
| 185 // End | |
| 186 | |
| 187 #endif // OS_BSD_VM_OSTHREAD_BSD_HPP |