Tue, 06 Mar 2012 12:36:59 +0100
7160570: Intrinsification support for tracing framework
Reviewed-by: sla, never
1 /*
2 * Copyright (c) 1999, 2012, 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 */
25 #ifndef OS_BSD_VM_OSTHREAD_BSD_HPP
26 #define OS_BSD_VM_OSTHREAD_BSD_HPP
28 private:
29 int _thread_type;
31 public:
33 int thread_type() const {
34 return _thread_type;
35 }
36 void set_thread_type(int type) {
37 _thread_type = type;
38 }
40 private:
42 #ifdef _ALLBSD_SOURCE
44 #ifdef __APPLE__
45 thread_t _thread_id;
46 #else
47 pthread_t _thread_id;
48 #endif
50 // _pthread_id is the pthread id, which is used by library calls
51 // (e.g. pthread_kill).
52 pthread_t _pthread_id;
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;
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
65 sigset_t _caller_sigmask; // Caller's signal mask
67 public:
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; }
73 #ifdef _ALLBSD_SOURCE
74 #ifdef __APPLE__
75 static size_t thread_id_size() { return sizeof(thread_t); }
76 thread_t thread_id() const {
77 return _thread_id;
78 }
79 #else
80 static size_t thread_id_size() { return sizeof(pthread_t); }
81 pthread_t thread_id() const {
82 return _thread_id;
83 }
84 #endif
85 #else
86 static size_t thread_id_size() { return sizeof(pid_t); }
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
103 #ifdef __APPLE__
104 void set_thread_id(thread_t id) {
105 _thread_id = id;
106 }
107 #else
108 void set_thread_id(pthread_t id) {
109 _thread_id = id;
110 }
111 #endif
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 }
124 // ***************************************************************
125 // suspension support.
126 // ***************************************************************
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;
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 */
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; }
162 void set_alt_sig_stack(address val) { _alt_sig_stack = val; }
163 address alt_sig_stack(void) { return _alt_sig_stack; }
165 private:
166 Monitor* _startThread_lock; // sync parent and child in thread creation
168 public:
170 Monitor* startThread_lock() const {
171 return _startThread_lock;
172 }
174 // ***************************************************************
175 // Platform dependent initialization and cleanup
176 // ***************************************************************
178 private:
180 void pd_initialize();
181 void pd_destroy();
183 // Reconciliation History
184 // osThread_solaris.hpp 1.24 99/08/27 13:11:54
185 // End
187 #endif // OS_BSD_VM_OSTHREAD_BSD_HPP