Mercurial > hg > truffle
annotate src/os/windows/vm/jvm_windows.cpp @ 6514:515bc212a53c
Merge.
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Fri, 05 Oct 2012 10:11:22 +0200 |
parents | f95d63e2154a |
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rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1998, 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 #include "precompiled.hpp" |
26 #include "prims/jvm.h" | |
27 #include "runtime/interfaceSupport.hpp" | |
28 #include "runtime/osThread.hpp" | |
0 | 29 |
30 #include <signal.h> | |
31 | |
32 JVM_LEAF(void*, JVM_GetThreadInterruptEvent()) | |
33 return Thread::current()->osthread()->interrupt_event(); | |
34 JVM_END | |
35 | |
36 // sun.misc.Signal /////////////////////////////////////////////////////////// | |
37 // Signal code is mostly copied from classic vm, signals_md.c 1.4 98/08/23 | |
38 /* | |
39 * This function is included primarily as a debugging aid. If Java is | |
40 * running in a console window, then pressing <CTRL-BREAK> will cause | |
41 * the current state of all active threads and monitors to be written | |
42 * to the console window. | |
43 */ | |
44 | |
45 JVM_ENTRY_NO_ENV(void*, JVM_RegisterSignal(jint sig, void* handler)) | |
46 // Copied from classic vm | |
47 // signals_md.c 1.4 98/08/23 | |
48 void* newHandler = handler == (void *)2 | |
49 ? os::user_handler() | |
50 : handler; | |
51 switch (sig) { | |
52 case SIGFPE: | |
53 return (void *)-1; /* already used by VM */ | |
54 case SIGBREAK: | |
55 if (!ReduceSignalUsage) return (void *)-1; | |
56 | |
57 /* The following signals are used for Shutdown Hooks support. However, if | |
58 ReduceSignalUsage (-Xrs) is set, Shutdown Hooks must be invoked via | |
59 System.exit(), Java is not allowed to use these signals, and the the | |
60 user is allowed to set his own _native_ handler for these signals and | |
61 invoke System.exit() as needed. Terminator.setup() is avoiding | |
62 registration of these signals when -Xrs is present. */ | |
63 case SHUTDOWN1_SIGNAL: | |
64 case SHUTDOWN2_SIGNAL: | |
65 if (ReduceSignalUsage) return (void*)-1; | |
66 } | |
67 | |
68 void* oldHandler = os::signal(sig, newHandler); | |
69 if (oldHandler == os::user_handler()) { | |
70 return (void *)2; | |
71 } else { | |
72 return oldHandler; | |
73 } | |
74 JVM_END | |
75 | |
76 | |
77 JVM_ENTRY_NO_ENV(jboolean, JVM_RaiseSignal(jint sig)) | |
78 if (ReduceSignalUsage) { | |
79 // do not allow SHUTDOWN1_SIGNAL,SHUTDOWN2_SIGNAL,BREAK_SIGNAL | |
80 // to be raised when ReduceSignalUsage is set, since no handler | |
81 // for them is actually registered in JVM or via JVM_RegisterSignal. | |
82 if (sig == SHUTDOWN1_SIGNAL || sig == SHUTDOWN2_SIGNAL || | |
83 sig == SIGBREAK) { | |
84 return JNI_FALSE; | |
85 } | |
86 } | |
87 os::signal_raise(sig); | |
88 return JNI_TRUE; | |
89 JVM_END | |
90 | |
91 | |
92 /* | |
93 All the defined signal names for Windows. | |
94 | |
95 NOTE that not all of these names are accepted by FindSignal! | |
96 | |
97 For various reasons some of these may be rejected at runtime. | |
98 | |
99 Here are the names currently accepted by a user of sun.misc.Signal with | |
100 1.4.1 (ignoring potential interaction with use of chaining, etc): | |
101 | |
102 (LIST TBD) | |
103 | |
104 */ | |
105 struct siglabel { | |
106 char *name; | |
107 int number; | |
108 }; | |
109 | |
110 struct siglabel siglabels[] = | |
111 /* derived from version 6.0 VC98/include/signal.h */ | |
112 {"ABRT", SIGABRT, /* abnormal termination triggered by abort cl */ | |
113 "FPE", SIGFPE, /* floating point exception */ | |
114 "SEGV", SIGSEGV, /* segment violation */ | |
115 "INT", SIGINT, /* interrupt */ | |
116 "TERM", SIGTERM, /* software term signal from kill */ | |
117 "BREAK", SIGBREAK, /* Ctrl-Break sequence */ | |
118 "ILL", SIGILL}; /* illegal instruction */ | |
119 | |
120 JVM_ENTRY_NO_ENV(jint, JVM_FindSignal(const char *name)) | |
121 /* find and return the named signal's number */ | |
122 | |
123 for(int i=0;i<sizeof(siglabels)/sizeof(struct siglabel);i++) | |
124 if(!strcmp(name, siglabels[i].name)) | |
125 return siglabels[i].number; | |
126 return -1; | |
127 JVM_END |