Mercurial > hg > graal-compiler
annotate src/os/solaris/vm/osThread_solaris.hpp @ 1725:09cdb1e1c77b
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author | trims |
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date | Fri, 20 Aug 2010 04:08:08 -0700 |
parents | 726b40449bd2 |
children | f95d63e2154a |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2006, 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 | |
25 // This is embedded via include into the class OSThread | |
26 | |
27 private: | |
28 | |
29 thread_t _thread_id; // Solaris thread id | |
30 unsigned int _lwp_id; // lwp ID, only used with bound threads | |
31 sigset_t _caller_sigmask; // Caller's signal mask | |
32 bool _vm_created_thread; // true if the VM create this thread | |
33 // false if primary thread or attached thread | |
34 public: | |
35 | |
36 thread_t thread_id() const { return _thread_id; } | |
37 | |
38 unsigned int lwp_id() const { return _lwp_id; } | |
39 | |
40 // Set and get state of _vm_created_thread flag | |
41 void set_vm_created() { _vm_created_thread = true; } | |
42 bool is_vm_created() { return _vm_created_thread; } | |
43 | |
44 // Methods to save/restore caller's signal mask | |
45 sigset_t caller_sigmask() const { return _caller_sigmask; } | |
46 void set_caller_sigmask(sigset_t sigmask) { _caller_sigmask = sigmask; } | |
47 | |
48 #ifndef PRODUCT | |
49 // Used for debugging, return a unique integer for each thread. | |
50 int thread_identifier() const { return _thread_id; } | |
51 #endif | |
52 #ifdef ASSERT | |
53 // On solaris reposition can fail in two ways: | |
54 // 1: a mismatched pc, because signal is delivered too late, target thread | |
55 // is resumed. | |
56 // 2: on a timeout where signal is lost, target thread is resumed. | |
57 bool valid_reposition_failure() { | |
58 // only 1 and 2 can happen and we can handle both of them | |
59 return true; | |
60 } | |
61 #endif | |
62 void set_thread_id(thread_t id) { _thread_id = id; } | |
63 void set_lwp_id(unsigned int id){ _lwp_id = id; } | |
64 | |
65 // *************************************************************** | |
66 // interrupt support. interrupts (using signals) are used to get | |
67 // the thread context (get_thread_pc), to set the thread context | |
68 // (set_thread_pc), and to implement java.lang.Thread.interrupt. | |
69 // *************************************************************** | |
70 | |
71 public: | |
72 | |
73 class InterruptArguments : StackObj { | |
74 private: | |
75 Thread* _thread; // the thread to signal was dispatched to | |
76 ucontext_t* _ucontext; // the machine context at the time of the signal | |
77 | |
78 public: | |
79 InterruptArguments(Thread* thread, ucontext_t* ucontext) { | |
80 _thread = thread; | |
81 _ucontext = ucontext; | |
82 } | |
83 | |
84 Thread* thread() const { return _thread; } | |
85 ucontext_t* ucontext() const { return _ucontext; } | |
86 }; | |
87 | |
88 // There are currently no asynchronous callbacks - and we'd better not | |
89 // support them in the future either, as they need to be deallocated from | |
90 // the interrupt handler, which is not safe; they also require locks to | |
91 // protect the callback queue. | |
92 | |
93 class Sync_Interrupt_Callback : private StackObj { | |
94 protected: | |
95 volatile bool _is_done; | |
96 Monitor* _sync; | |
97 Thread* _target; | |
98 public: | |
99 Sync_Interrupt_Callback(Monitor * sync) { | |
100 _is_done = false; _target = NULL; _sync = sync; | |
101 } | |
102 | |
103 bool is_done() const { return _is_done; } | |
104 Thread* target() const { return _target; } | |
105 | |
106 int interrupt(Thread * target, int timeout); | |
107 | |
108 // override to implement the callback. | |
109 virtual void execute(InterruptArguments *args) = 0; | |
110 | |
111 void leave_callback(); | |
112 }; | |
113 | |
114 private: | |
115 | |
116 Sync_Interrupt_Callback * volatile _current_callback; | |
117 enum { | |
118 callback_in_progress = 1 | |
119 }; | |
120 Mutex * _current_callback_lock; // only used on v8 | |
121 | |
122 public: | |
123 | |
124 int set_interrupt_callback (Sync_Interrupt_Callback * cb); | |
125 void remove_interrupt_callback(Sync_Interrupt_Callback * cb); | |
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126 void do_interrupt_callbacks_at_interrupt(InterruptArguments *args); |
0 | 127 |
128 // *************************************************************** | |
129 // java.lang.Thread.interrupt state. | |
130 // *************************************************************** | |
131 | |
132 private: | |
133 | |
134 JavaThreadState _saved_interrupt_thread_state; // the thread state before a system call -- restored afterward | |
135 | |
136 public: | |
137 | |
138 | |
139 JavaThreadState saved_interrupt_thread_state() { return _saved_interrupt_thread_state; } | |
140 void set_saved_interrupt_thread_state(JavaThreadState state) { _saved_interrupt_thread_state = state; } | |
141 | |
142 static void handle_spinlock_contention(int tries); // Used for thread local eden locking | |
143 | |
144 // *************************************************************** | |
145 // Platform dependent initialization and cleanup | |
146 // *************************************************************** | |
147 | |
148 private: | |
149 | |
150 void pd_initialize(); | |
151 void pd_destroy(); |