Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/osThread.hpp @ 12364:651cc32247d7
Add Graal option for deferring write barriers of eden allocated objects
author | Christos Kotselidis <christos.kotselidis@oracle.com> |
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date | Fri, 11 Oct 2013 17:06:18 +0200 |
parents | d2a62e0f25eb |
children | bdd155477289 |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, 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 SHARE_VM_RUNTIME_OSTHREAD_HPP |
26 #define SHARE_VM_RUNTIME_OSTHREAD_HPP | |
27 | |
28 #include "runtime/frame.hpp" | |
29 #include "runtime/handles.hpp" | |
30 #include "runtime/javaFrameAnchor.hpp" | |
31 #include "runtime/objectMonitor.hpp" | |
32 #include "utilities/top.hpp" | |
33 | |
0 | 34 // The OSThread class holds OS-specific thread information. It is equivalent |
35 // to the sys_thread_t structure of the classic JVM implementation. | |
36 | |
37 // The thread states represented by the ThreadState values are platform-specific | |
38 // and are likely to be only approximate, because most OSes don't give you access | |
39 // to precise thread state information. | |
40 | |
41 // Note: the ThreadState is legacy code and is not correctly implemented. | |
42 // Uses of ThreadState need to be replaced by the state in the JavaThread. | |
43 | |
44 enum ThreadState { | |
45 ALLOCATED, // Memory has been allocated but not initialized | |
46 INITIALIZED, // The thread has been initialized but yet started | |
47 RUNNABLE, // Has been started and is runnable, but not necessarily running | |
48 MONITOR_WAIT, // Waiting on a contended monitor lock | |
49 CONDVAR_WAIT, // Waiting on a condition variable | |
50 OBJECT_WAIT, // Waiting on an Object.wait() call | |
51 BREAKPOINTED, // Suspended at breakpoint | |
52 SLEEPING, // Thread.sleep() | |
53 ZOMBIE // All done, but not reclaimed yet | |
54 }; | |
55 | |
56 // I'd make OSThread a ValueObj embedded in Thread to avoid an indirection, but | |
57 // the assembler test in java.cpp expects that it can install the OSThread of | |
58 // the main thread into its own Thread at will. | |
59 | |
60 | |
6197 | 61 class OSThread: public CHeapObj<mtThread> { |
0 | 62 friend class VMStructs; |
63 private: | |
64 OSThreadStartFunc _start_proc; // Thread start routine | |
65 void* _start_parm; // Thread start routine parameter | |
66 volatile ThreadState _state; // Thread state *hint* | |
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67 volatile jint _interrupted; // Thread.isInterrupted state |
0 | 68 |
69 // Note: _interrupted must be jint, so that Java intrinsics can access it. | |
70 // The value stored there must be either 0 or 1. It must be possible | |
71 // for Java to emulate Thread.currentThread().isInterrupted() by performing | |
72 // the double indirection Thread::current()->_osthread->_interrupted. | |
73 | |
74 // Methods | |
75 public: | |
76 void set_state(ThreadState state) { _state = state; } | |
77 ThreadState get_state() { return _state; } | |
78 | |
79 OSThread(OSThreadStartFunc start_proc, void* start_parm); | |
80 ~OSThread(); | |
81 | |
82 // Accessors | |
83 OSThreadStartFunc start_proc() const { return _start_proc; } | |
84 void set_start_proc(OSThreadStartFunc start_proc) { _start_proc = start_proc; } | |
85 void* start_parm() const { return _start_parm; } | |
86 void set_start_parm(void* start_parm) { _start_parm = start_parm; } | |
87 | |
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88 volatile bool interrupted() const { return _interrupted != 0; } |
0 | 89 void set_interrupted(bool z) { _interrupted = z ? 1 : 0; } |
90 | |
91 // Printing | |
92 void print_on(outputStream* st) const; | |
93 void print() const { print_on(tty); } | |
94 | |
95 // For java intrinsics: | |
96 static ByteSize interrupted_offset() { return byte_offset_of(OSThread, _interrupted); } | |
97 | |
98 // Platform dependent stuff | |
1972 | 99 #ifdef TARGET_OS_FAMILY_linux |
100 # include "osThread_linux.hpp" | |
101 #endif | |
102 #ifdef TARGET_OS_FAMILY_solaris | |
103 # include "osThread_solaris.hpp" | |
104 #endif | |
105 #ifdef TARGET_OS_FAMILY_windows | |
106 # include "osThread_windows.hpp" | |
107 #endif | |
3960 | 108 #ifdef TARGET_OS_FAMILY_bsd |
109 # include "osThread_bsd.hpp" | |
110 #endif | |
1972 | 111 |
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112 public: |
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113 static ByteSize thread_id_offset() { return byte_offset_of(OSThread, _thread_id); } |
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114 static size_t thread_id_size() { return sizeof(thread_id_t); } |
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115 |
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116 thread_id_t thread_id() const { return _thread_id; } |
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117 |
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118 void set_thread_id(thread_id_t id) { _thread_id = id; } |
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119 |
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120 private: |
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121 // _thread_id is kernel thread id (similar to LWP id on Solaris). Each |
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122 // thread has a unique thread_id (BsdThreads or NPTL). It can be used |
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123 // to access /proc. |
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124 thread_id_t _thread_id; |
0 | 125 }; |
126 | |
127 | |
128 // Utility class for use with condition variables: | |
129 class OSThreadWaitState : public StackObj { | |
130 OSThread* _osthread; | |
131 ThreadState _old_state; | |
132 public: | |
133 OSThreadWaitState(OSThread* osthread, bool is_object_wait) { | |
134 _osthread = osthread; | |
135 _old_state = osthread->get_state(); | |
136 if (is_object_wait) { | |
137 osthread->set_state(OBJECT_WAIT); | |
138 } else { | |
139 osthread->set_state(CONDVAR_WAIT); | |
140 } | |
141 } | |
142 ~OSThreadWaitState() { | |
143 _osthread->set_state(_old_state); | |
144 } | |
145 }; | |
146 | |
147 | |
148 // Utility class for use with contended monitors: | |
149 class OSThreadContendState : public StackObj { | |
150 OSThread* _osthread; | |
151 ThreadState _old_state; | |
152 public: | |
153 OSThreadContendState(OSThread* osthread) { | |
154 _osthread = osthread; | |
155 _old_state = osthread->get_state(); | |
156 osthread->set_state(MONITOR_WAIT); | |
157 } | |
158 ~OSThreadContendState() { | |
159 _osthread->set_state(_old_state); | |
160 } | |
161 }; | |
1972 | 162 |
163 #endif // SHARE_VM_RUNTIME_OSTHREAD_HPP |