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annotate src/os/solaris/vm/osThread_solaris.hpp @ 2377:57552dca1708
7029509: nightly failures after static fields in Class
Reviewed-by: kvn
author | never |
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date | Mon, 21 Mar 2011 14:06:50 -0700 |
parents | f95d63e2154a |
children | de268c8a8075 |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef OS_SOLARIS_VM_OSTHREAD_SOLARIS_HPP |
26 #define OS_SOLARIS_VM_OSTHREAD_SOLARIS_HPP | |
27 | |
0 | 28 // This is embedded via include into the class OSThread |
29 | |
30 private: | |
31 | |
32 thread_t _thread_id; // Solaris thread id | |
33 unsigned int _lwp_id; // lwp ID, only used with bound threads | |
34 sigset_t _caller_sigmask; // Caller's signal mask | |
35 bool _vm_created_thread; // true if the VM create this thread | |
36 // false if primary thread or attached thread | |
37 public: | |
38 | |
39 thread_t thread_id() const { return _thread_id; } | |
40 | |
41 unsigned int lwp_id() const { return _lwp_id; } | |
42 | |
43 // Set and get state of _vm_created_thread flag | |
44 void set_vm_created() { _vm_created_thread = true; } | |
45 bool is_vm_created() { return _vm_created_thread; } | |
46 | |
47 // Methods to save/restore caller's signal mask | |
48 sigset_t caller_sigmask() const { return _caller_sigmask; } | |
49 void set_caller_sigmask(sigset_t sigmask) { _caller_sigmask = sigmask; } | |
50 | |
51 #ifndef PRODUCT | |
52 // Used for debugging, return a unique integer for each thread. | |
53 int thread_identifier() const { return _thread_id; } | |
54 #endif | |
55 #ifdef ASSERT | |
56 // On solaris reposition can fail in two ways: | |
57 // 1: a mismatched pc, because signal is delivered too late, target thread | |
58 // is resumed. | |
59 // 2: on a timeout where signal is lost, target thread is resumed. | |
60 bool valid_reposition_failure() { | |
61 // only 1 and 2 can happen and we can handle both of them | |
62 return true; | |
63 } | |
64 #endif | |
65 void set_thread_id(thread_t id) { _thread_id = id; } | |
66 void set_lwp_id(unsigned int id){ _lwp_id = id; } | |
67 | |
68 // *************************************************************** | |
69 // interrupt support. interrupts (using signals) are used to get | |
70 // the thread context (get_thread_pc), to set the thread context | |
71 // (set_thread_pc), and to implement java.lang.Thread.interrupt. | |
72 // *************************************************************** | |
73 | |
74 public: | |
75 | |
76 class InterruptArguments : StackObj { | |
77 private: | |
78 Thread* _thread; // the thread to signal was dispatched to | |
79 ucontext_t* _ucontext; // the machine context at the time of the signal | |
80 | |
81 public: | |
82 InterruptArguments(Thread* thread, ucontext_t* ucontext) { | |
83 _thread = thread; | |
84 _ucontext = ucontext; | |
85 } | |
86 | |
87 Thread* thread() const { return _thread; } | |
88 ucontext_t* ucontext() const { return _ucontext; } | |
89 }; | |
90 | |
91 // There are currently no asynchronous callbacks - and we'd better not | |
92 // support them in the future either, as they need to be deallocated from | |
93 // the interrupt handler, which is not safe; they also require locks to | |
94 // protect the callback queue. | |
95 | |
96 class Sync_Interrupt_Callback : private StackObj { | |
97 protected: | |
98 volatile bool _is_done; | |
99 Monitor* _sync; | |
100 Thread* _target; | |
101 public: | |
102 Sync_Interrupt_Callback(Monitor * sync) { | |
103 _is_done = false; _target = NULL; _sync = sync; | |
104 } | |
105 | |
106 bool is_done() const { return _is_done; } | |
107 Thread* target() const { return _target; } | |
108 | |
109 int interrupt(Thread * target, int timeout); | |
110 | |
111 // override to implement the callback. | |
112 virtual void execute(InterruptArguments *args) = 0; | |
113 | |
114 void leave_callback(); | |
115 }; | |
116 | |
117 private: | |
118 | |
119 Sync_Interrupt_Callback * volatile _current_callback; | |
120 enum { | |
121 callback_in_progress = 1 | |
122 }; | |
123 Mutex * _current_callback_lock; // only used on v8 | |
124 | |
125 public: | |
126 | |
127 int set_interrupt_callback (Sync_Interrupt_Callback * cb); | |
128 void remove_interrupt_callback(Sync_Interrupt_Callback * cb); | |
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129 void do_interrupt_callbacks_at_interrupt(InterruptArguments *args); |
0 | 130 |
131 // *************************************************************** | |
132 // java.lang.Thread.interrupt state. | |
133 // *************************************************************** | |
134 | |
135 private: | |
136 | |
137 JavaThreadState _saved_interrupt_thread_state; // the thread state before a system call -- restored afterward | |
138 | |
139 public: | |
140 | |
141 | |
142 JavaThreadState saved_interrupt_thread_state() { return _saved_interrupt_thread_state; } | |
143 void set_saved_interrupt_thread_state(JavaThreadState state) { _saved_interrupt_thread_state = state; } | |
144 | |
145 static void handle_spinlock_contention(int tries); // Used for thread local eden locking | |
146 | |
147 // *************************************************************** | |
148 // Platform dependent initialization and cleanup | |
149 // *************************************************************** | |
150 | |
151 private: | |
152 | |
153 void pd_initialize(); | |
154 void pd_destroy(); | |
1972 | 155 |
156 #endif // OS_SOLARIS_VM_OSTHREAD_SOLARIS_HPP |