Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/osThread.hpp @ 1782:f353275af40e
6981773: incorrect fill value with OptimizeFill
Reviewed-by: kvn, twisti
author | never |
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date | Thu, 02 Sep 2010 11:40:02 -0700 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
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0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 1997, 2005, Oracle and/or its affiliates. All rights reserved. |
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12 * version 2 for more details (a copy is included in the LICENSE file that | |
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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 // The OSThread class holds OS-specific thread information. It is equivalent | |
26 // to the sys_thread_t structure of the classic JVM implementation. | |
27 | |
28 // The thread states represented by the ThreadState values are platform-specific | |
29 // and are likely to be only approximate, because most OSes don't give you access | |
30 // to precise thread state information. | |
31 | |
32 // Note: the ThreadState is legacy code and is not correctly implemented. | |
33 // Uses of ThreadState need to be replaced by the state in the JavaThread. | |
34 | |
35 enum ThreadState { | |
36 ALLOCATED, // Memory has been allocated but not initialized | |
37 INITIALIZED, // The thread has been initialized but yet started | |
38 RUNNABLE, // Has been started and is runnable, but not necessarily running | |
39 MONITOR_WAIT, // Waiting on a contended monitor lock | |
40 CONDVAR_WAIT, // Waiting on a condition variable | |
41 OBJECT_WAIT, // Waiting on an Object.wait() call | |
42 BREAKPOINTED, // Suspended at breakpoint | |
43 SLEEPING, // Thread.sleep() | |
44 ZOMBIE // All done, but not reclaimed yet | |
45 }; | |
46 | |
47 // I'd make OSThread a ValueObj embedded in Thread to avoid an indirection, but | |
48 // the assembler test in java.cpp expects that it can install the OSThread of | |
49 // the main thread into its own Thread at will. | |
50 | |
51 | |
52 class OSThread: public CHeapObj { | |
53 friend class VMStructs; | |
54 private: | |
55 //void* _start_proc; // Thread start routine | |
56 OSThreadStartFunc _start_proc; // Thread start routine | |
57 void* _start_parm; // Thread start routine parameter | |
58 volatile ThreadState _state; // Thread state *hint* | |
59 jint _interrupted; // Thread.isInterrupted state | |
60 | |
61 // Note: _interrupted must be jint, so that Java intrinsics can access it. | |
62 // The value stored there must be either 0 or 1. It must be possible | |
63 // for Java to emulate Thread.currentThread().isInterrupted() by performing | |
64 // the double indirection Thread::current()->_osthread->_interrupted. | |
65 | |
66 // Methods | |
67 public: | |
68 void set_state(ThreadState state) { _state = state; } | |
69 ThreadState get_state() { return _state; } | |
70 | |
71 // Constructor | |
72 OSThread(OSThreadStartFunc start_proc, void* start_parm); | |
73 | |
74 // Destructor | |
75 ~OSThread(); | |
76 | |
77 // Accessors | |
78 OSThreadStartFunc start_proc() const { return _start_proc; } | |
79 void set_start_proc(OSThreadStartFunc start_proc) { _start_proc = start_proc; } | |
80 void* start_parm() const { return _start_parm; } | |
81 void set_start_parm(void* start_parm) { _start_parm = start_parm; } | |
82 | |
83 bool interrupted() const { return _interrupted != 0; } | |
84 void set_interrupted(bool z) { _interrupted = z ? 1 : 0; } | |
85 | |
86 // Printing | |
87 void print_on(outputStream* st) const; | |
88 void print() const { print_on(tty); } | |
89 | |
90 // For java intrinsics: | |
91 static ByteSize interrupted_offset() { return byte_offset_of(OSThread, _interrupted); } | |
92 | |
93 // Platform dependent stuff | |
94 #include "incls/_osThread_pd.hpp.incl" | |
95 }; | |
96 | |
97 | |
98 // Utility class for use with condition variables: | |
99 class OSThreadWaitState : public StackObj { | |
100 OSThread* _osthread; | |
101 ThreadState _old_state; | |
102 public: | |
103 OSThreadWaitState(OSThread* osthread, bool is_object_wait) { | |
104 _osthread = osthread; | |
105 _old_state = osthread->get_state(); | |
106 if (is_object_wait) { | |
107 osthread->set_state(OBJECT_WAIT); | |
108 } else { | |
109 osthread->set_state(CONDVAR_WAIT); | |
110 } | |
111 } | |
112 ~OSThreadWaitState() { | |
113 _osthread->set_state(_old_state); | |
114 } | |
115 }; | |
116 | |
117 | |
118 // Utility class for use with contended monitors: | |
119 class OSThreadContendState : public StackObj { | |
120 OSThread* _osthread; | |
121 ThreadState _old_state; | |
122 public: | |
123 OSThreadContendState(OSThread* osthread) { | |
124 _osthread = osthread; | |
125 _old_state = osthread->get_state(); | |
126 osthread->set_state(MONITOR_WAIT); | |
127 } | |
128 ~OSThreadContendState() { | |
129 _osthread->set_state(_old_state); | |
130 } | |
131 }; |