Mercurial > hg > truffle
annotate src/os/bsd/vm/osThread_bsd.hpp @ 5228:e0f17fb3e7d2
Do not split merges when they are used to anchor some values
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Wed, 11 Apr 2012 11:37:24 +0200 |
parents | 0368109684cb |
children | 0105f367a14c |
rev | line source |
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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 thread_t thread_id() const { |
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76 return _thread_id; |
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77 } |
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78 #else |
3960 | 79 pthread_t thread_id() const { |
80 return _thread_id; | |
81 } | |
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82 #endif |
3960 | 83 #else |
84 pid_t thread_id() const { | |
85 return _thread_id; | |
86 } | |
87 #endif | |
88 #ifndef PRODUCT | |
89 // Used for debugging, return a unique integer for each thread. | |
90 intptr_t thread_identifier() const { return (intptr_t)_pthread_id; } | |
91 #endif | |
92 #ifdef ASSERT | |
93 // We expect no reposition failures so kill vm if we get one. | |
94 // | |
95 bool valid_reposition_failure() { | |
96 return false; | |
97 } | |
98 #endif // ASSERT | |
99 #ifdef _ALLBSD_SOURCE | |
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100 #ifdef __APPLE__ |
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101 void set_thread_id(thread_t id) { |
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102 _thread_id = id; |
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103 } |
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104 #else |
3960 | 105 void set_thread_id(pthread_t id) { |
106 _thread_id = id; | |
107 } | |
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108 #endif |
3960 | 109 #else |
110 void set_thread_id(pid_t id) { | |
111 _thread_id = id; | |
112 } | |
113 #endif | |
114 pthread_t pthread_id() const { | |
115 return _pthread_id; | |
116 } | |
117 void set_pthread_id(pthread_t tid) { | |
118 _pthread_id = tid; | |
119 } | |
120 | |
121 // *************************************************************** | |
122 // suspension support. | |
123 // *************************************************************** | |
124 | |
125 public: | |
126 // flags that support signal based suspend/resume on Bsd are in a | |
127 // separate class to avoid confusion with many flags in OSThread that | |
128 // are used by VM level suspend/resume. | |
129 os::Bsd::SuspendResume sr; | |
130 | |
131 // _ucontext and _siginfo are used by SR_handler() to save thread context, | |
132 // and they will later be used to walk the stack or reposition thread PC. | |
133 // If the thread is not suspended in SR_handler() (e.g. self suspend), | |
134 // the value in _ucontext is meaningless, so we must use the last Java | |
135 // frame information as the frame. This will mean that for threads | |
136 // that are parked on a mutex the profiler (and safepoint mechanism) | |
137 // will see the thread as if it were still in the Java frame. This | |
138 // not a problem for the profiler since the Java frame is a close | |
139 // enough result. For the safepoint mechanism when the give it the | |
140 // Java frame we are not at a point where the safepoint needs the | |
141 // frame to that accurate (like for a compiled safepoint) since we | |
142 // should be in a place where we are native and will block ourselves | |
143 // if we transition. | |
144 private: | |
145 void* _siginfo; | |
146 ucontext_t* _ucontext; | |
147 int _expanding_stack; /* non zero if manually expanding stack */ | |
148 address _alt_sig_stack; /* address of base of alternate signal stack */ | |
149 | |
150 public: | |
151 void* siginfo() const { return _siginfo; } | |
152 void set_siginfo(void* ptr) { _siginfo = ptr; } | |
153 ucontext_t* ucontext() const { return _ucontext; } | |
154 void set_ucontext(ucontext_t* ptr) { _ucontext = ptr; } | |
155 void set_expanding_stack(void) { _expanding_stack = 1; } | |
156 void clear_expanding_stack(void) { _expanding_stack = 0; } | |
157 int expanding_stack(void) { return _expanding_stack; } | |
158 | |
159 void set_alt_sig_stack(address val) { _alt_sig_stack = val; } | |
160 address alt_sig_stack(void) { return _alt_sig_stack; } | |
161 | |
162 private: | |
163 Monitor* _startThread_lock; // sync parent and child in thread creation | |
164 | |
165 public: | |
166 | |
167 Monitor* startThread_lock() const { | |
168 return _startThread_lock; | |
169 } | |
170 | |
171 // *************************************************************** | |
172 // Platform dependent initialization and cleanup | |
173 // *************************************************************** | |
174 | |
175 private: | |
176 | |
177 void pd_initialize(); | |
178 void pd_destroy(); | |
179 | |
180 // Reconciliation History | |
181 // osThread_solaris.hpp 1.24 99/08/27 13:11:54 | |
182 // End | |
183 | |
184 #endif // OS_BSD_VM_OSTHREAD_BSD_HPP |