Mercurial > hg > graal-jvmci-8
comparison src/os/windows/vm/jvm_windows.cpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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-1:000000000000 | 0:a61af66fc99e |
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1 /* | |
2 * Copyright 1998-2007 Sun Microsystems, Inc. All Rights Reserved. | |
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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_jvm_windows.cpp.incl" | |
27 | |
28 #include <signal.h> | |
29 | |
30 JVM_LEAF(void*, JVM_GetThreadInterruptEvent()) | |
31 return Thread::current()->osthread()->interrupt_event(); | |
32 JVM_END | |
33 | |
34 // sun.misc.Signal /////////////////////////////////////////////////////////// | |
35 // Signal code is mostly copied from classic vm, signals_md.c 1.4 98/08/23 | |
36 /* | |
37 * This function is included primarily as a debugging aid. If Java is | |
38 * running in a console window, then pressing <CTRL-BREAK> will cause | |
39 * the current state of all active threads and monitors to be written | |
40 * to the console window. | |
41 */ | |
42 | |
43 JVM_ENTRY_NO_ENV(void*, JVM_RegisterSignal(jint sig, void* handler)) | |
44 // Copied from classic vm | |
45 // signals_md.c 1.4 98/08/23 | |
46 void* newHandler = handler == (void *)2 | |
47 ? os::user_handler() | |
48 : handler; | |
49 switch (sig) { | |
50 case SIGFPE: | |
51 return (void *)-1; /* already used by VM */ | |
52 case SIGBREAK: | |
53 if (!ReduceSignalUsage) return (void *)-1; | |
54 | |
55 /* The following signals are used for Shutdown Hooks support. However, if | |
56 ReduceSignalUsage (-Xrs) is set, Shutdown Hooks must be invoked via | |
57 System.exit(), Java is not allowed to use these signals, and the the | |
58 user is allowed to set his own _native_ handler for these signals and | |
59 invoke System.exit() as needed. Terminator.setup() is avoiding | |
60 registration of these signals when -Xrs is present. */ | |
61 case SHUTDOWN1_SIGNAL: | |
62 case SHUTDOWN2_SIGNAL: | |
63 if (ReduceSignalUsage) return (void*)-1; | |
64 } | |
65 | |
66 void* oldHandler = os::signal(sig, newHandler); | |
67 if (oldHandler == os::user_handler()) { | |
68 return (void *)2; | |
69 } else { | |
70 return oldHandler; | |
71 } | |
72 JVM_END | |
73 | |
74 | |
75 JVM_ENTRY_NO_ENV(jboolean, JVM_RaiseSignal(jint sig)) | |
76 if (ReduceSignalUsage) { | |
77 // do not allow SHUTDOWN1_SIGNAL,SHUTDOWN2_SIGNAL,BREAK_SIGNAL | |
78 // to be raised when ReduceSignalUsage is set, since no handler | |
79 // for them is actually registered in JVM or via JVM_RegisterSignal. | |
80 if (sig == SHUTDOWN1_SIGNAL || sig == SHUTDOWN2_SIGNAL || | |
81 sig == SIGBREAK) { | |
82 return JNI_FALSE; | |
83 } | |
84 } | |
85 os::signal_raise(sig); | |
86 return JNI_TRUE; | |
87 JVM_END | |
88 | |
89 | |
90 /* | |
91 All the defined signal names for Windows. | |
92 | |
93 NOTE that not all of these names are accepted by FindSignal! | |
94 | |
95 For various reasons some of these may be rejected at runtime. | |
96 | |
97 Here are the names currently accepted by a user of sun.misc.Signal with | |
98 1.4.1 (ignoring potential interaction with use of chaining, etc): | |
99 | |
100 (LIST TBD) | |
101 | |
102 */ | |
103 struct siglabel { | |
104 char *name; | |
105 int number; | |
106 }; | |
107 | |
108 struct siglabel siglabels[] = | |
109 /* derived from version 6.0 VC98/include/signal.h */ | |
110 {"ABRT", SIGABRT, /* abnormal termination triggered by abort cl */ | |
111 "FPE", SIGFPE, /* floating point exception */ | |
112 "SEGV", SIGSEGV, /* segment violation */ | |
113 "INT", SIGINT, /* interrupt */ | |
114 "TERM", SIGTERM, /* software term signal from kill */ | |
115 "BREAK", SIGBREAK, /* Ctrl-Break sequence */ | |
116 "ILL", SIGILL}; /* illegal instruction */ | |
117 | |
118 JVM_ENTRY_NO_ENV(jint, JVM_FindSignal(const char *name)) | |
119 /* find and return the named signal's number */ | |
120 | |
121 for(int i=0;i<sizeof(siglabels)/sizeof(struct siglabel);i++) | |
122 if(!strcmp(name, siglabels[i].name)) | |
123 return siglabels[i].number; | |
124 return -1; | |
125 JVM_END |