Mercurial > hg > graal-compiler
comparison src/os/bsd/vm/osThread_bsd.hpp @ 3960:f08d439fab8c
7089790: integrate bsd-port changes
Reviewed-by: kvn, twisti, jrose
Contributed-by: Kurt Miller <kurt@intricatesoftware.com>, Greg Lewis <glewis@eyesbeyond.com>, Jung-uk Kim <jkim@freebsd.org>, Christos Zoulas <christos@zoulas.com>, Landon Fuller <landonf@plausible.coop>, The FreeBSD Foundation <board@freebsdfoundation.org>, Michael Franz <mvfranz@gmail.com>, Roger Hoover <rhoover@apple.com>, Alexander Strange <astrange@apple.com>
author | never |
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date | Sun, 25 Sep 2011 16:03:29 -0700 |
parents | |
children | 0368109684cb |
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1 /* | |
2 * Copyright (c) 1999, 2010, 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_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 | |
43 // _thread_id and _pthread_id are the same on BSD | |
44 // keep both to minimize code divergence in os_bsd.cpp | |
45 pthread_t _thread_id; | |
46 pthread_t _pthread_id; | |
47 #else | |
48 // _thread_id is kernel thread id (similar to LWP id on Solaris). Each | |
49 // thread has a unique thread_id (BsdThreads or NPTL). It can be used | |
50 // to access /proc. | |
51 pid_t _thread_id; | |
52 | |
53 // _pthread_id is the pthread id, which is used by library calls | |
54 // (e.g. pthread_kill). | |
55 pthread_t _pthread_id; | |
56 #endif | |
57 | |
58 sigset_t _caller_sigmask; // Caller's signal mask | |
59 | |
60 public: | |
61 | |
62 // Methods to save/restore caller's signal mask | |
63 sigset_t caller_sigmask() const { return _caller_sigmask; } | |
64 void set_caller_sigmask(sigset_t sigmask) { _caller_sigmask = sigmask; } | |
65 | |
66 #ifdef _ALLBSD_SOURCE | |
67 pthread_t thread_id() const { | |
68 return _thread_id; | |
69 } | |
70 #else | |
71 pid_t thread_id() const { | |
72 return _thread_id; | |
73 } | |
74 #endif | |
75 #ifndef PRODUCT | |
76 // Used for debugging, return a unique integer for each thread. | |
77 intptr_t thread_identifier() const { return (intptr_t)_pthread_id; } | |
78 #endif | |
79 #ifdef ASSERT | |
80 // We expect no reposition failures so kill vm if we get one. | |
81 // | |
82 bool valid_reposition_failure() { | |
83 return false; | |
84 } | |
85 #endif // ASSERT | |
86 #ifdef _ALLBSD_SOURCE | |
87 void set_thread_id(pthread_t id) { | |
88 _thread_id = id; | |
89 } | |
90 #else | |
91 void set_thread_id(pid_t id) { | |
92 _thread_id = id; | |
93 } | |
94 #endif | |
95 pthread_t pthread_id() const { | |
96 return _pthread_id; | |
97 } | |
98 void set_pthread_id(pthread_t tid) { | |
99 _pthread_id = tid; | |
100 } | |
101 | |
102 // *************************************************************** | |
103 // suspension support. | |
104 // *************************************************************** | |
105 | |
106 public: | |
107 // flags that support signal based suspend/resume on Bsd are in a | |
108 // separate class to avoid confusion with many flags in OSThread that | |
109 // are used by VM level suspend/resume. | |
110 os::Bsd::SuspendResume sr; | |
111 | |
112 // _ucontext and _siginfo are used by SR_handler() to save thread context, | |
113 // and they will later be used to walk the stack or reposition thread PC. | |
114 // If the thread is not suspended in SR_handler() (e.g. self suspend), | |
115 // the value in _ucontext is meaningless, so we must use the last Java | |
116 // frame information as the frame. This will mean that for threads | |
117 // that are parked on a mutex the profiler (and safepoint mechanism) | |
118 // will see the thread as if it were still in the Java frame. This | |
119 // not a problem for the profiler since the Java frame is a close | |
120 // enough result. For the safepoint mechanism when the give it the | |
121 // Java frame we are not at a point where the safepoint needs the | |
122 // frame to that accurate (like for a compiled safepoint) since we | |
123 // should be in a place where we are native and will block ourselves | |
124 // if we transition. | |
125 private: | |
126 void* _siginfo; | |
127 ucontext_t* _ucontext; | |
128 int _expanding_stack; /* non zero if manually expanding stack */ | |
129 address _alt_sig_stack; /* address of base of alternate signal stack */ | |
130 | |
131 public: | |
132 void* siginfo() const { return _siginfo; } | |
133 void set_siginfo(void* ptr) { _siginfo = ptr; } | |
134 ucontext_t* ucontext() const { return _ucontext; } | |
135 void set_ucontext(ucontext_t* ptr) { _ucontext = ptr; } | |
136 void set_expanding_stack(void) { _expanding_stack = 1; } | |
137 void clear_expanding_stack(void) { _expanding_stack = 0; } | |
138 int expanding_stack(void) { return _expanding_stack; } | |
139 | |
140 void set_alt_sig_stack(address val) { _alt_sig_stack = val; } | |
141 address alt_sig_stack(void) { return _alt_sig_stack; } | |
142 | |
143 private: | |
144 Monitor* _startThread_lock; // sync parent and child in thread creation | |
145 | |
146 public: | |
147 | |
148 Monitor* startThread_lock() const { | |
149 return _startThread_lock; | |
150 } | |
151 | |
152 // *************************************************************** | |
153 // Platform dependent initialization and cleanup | |
154 // *************************************************************** | |
155 | |
156 private: | |
157 | |
158 void pd_initialize(); | |
159 void pd_destroy(); | |
160 | |
161 // Reconciliation History | |
162 // osThread_solaris.hpp 1.24 99/08/27 13:11:54 | |
163 // End | |
164 | |
165 #endif // OS_BSD_VM_OSTHREAD_BSD_HPP |