1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/os/windows/vm/jvm_windows.cpp Sat Dec 01 00:00:00 2007 +0000
1.3 @@ -0,0 +1,125 @@
1.4 +/*
1.5 + * Copyright 1998-2007 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.24 + * have any questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#include "incls/_precompiled.incl"
1.29 +#include "incls/_jvm_windows.cpp.incl"
1.30 +
1.31 +#include <signal.h>
1.32 +
1.33 +JVM_LEAF(void*, JVM_GetThreadInterruptEvent())
1.34 + return Thread::current()->osthread()->interrupt_event();
1.35 +JVM_END
1.36 +
1.37 +// sun.misc.Signal ///////////////////////////////////////////////////////////
1.38 +// Signal code is mostly copied from classic vm, signals_md.c 1.4 98/08/23
1.39 +/*
1.40 + * This function is included primarily as a debugging aid. If Java is
1.41 + * running in a console window, then pressing <CTRL-BREAK> will cause
1.42 + * the current state of all active threads and monitors to be written
1.43 + * to the console window.
1.44 + */
1.45 +
1.46 +JVM_ENTRY_NO_ENV(void*, JVM_RegisterSignal(jint sig, void* handler))
1.47 + // Copied from classic vm
1.48 + // signals_md.c 1.4 98/08/23
1.49 + void* newHandler = handler == (void *)2
1.50 + ? os::user_handler()
1.51 + : handler;
1.52 + switch (sig) {
1.53 + case SIGFPE:
1.54 + return (void *)-1; /* already used by VM */
1.55 + case SIGBREAK:
1.56 + if (!ReduceSignalUsage) return (void *)-1;
1.57 +
1.58 + /* The following signals are used for Shutdown Hooks support. However, if
1.59 + ReduceSignalUsage (-Xrs) is set, Shutdown Hooks must be invoked via
1.60 + System.exit(), Java is not allowed to use these signals, and the the
1.61 + user is allowed to set his own _native_ handler for these signals and
1.62 + invoke System.exit() as needed. Terminator.setup() is avoiding
1.63 + registration of these signals when -Xrs is present. */
1.64 + case SHUTDOWN1_SIGNAL:
1.65 + case SHUTDOWN2_SIGNAL:
1.66 + if (ReduceSignalUsage) return (void*)-1;
1.67 + }
1.68 +
1.69 + void* oldHandler = os::signal(sig, newHandler);
1.70 + if (oldHandler == os::user_handler()) {
1.71 + return (void *)2;
1.72 + } else {
1.73 + return oldHandler;
1.74 + }
1.75 +JVM_END
1.76 +
1.77 +
1.78 +JVM_ENTRY_NO_ENV(jboolean, JVM_RaiseSignal(jint sig))
1.79 + if (ReduceSignalUsage) {
1.80 + // do not allow SHUTDOWN1_SIGNAL,SHUTDOWN2_SIGNAL,BREAK_SIGNAL
1.81 + // to be raised when ReduceSignalUsage is set, since no handler
1.82 + // for them is actually registered in JVM or via JVM_RegisterSignal.
1.83 + if (sig == SHUTDOWN1_SIGNAL || sig == SHUTDOWN2_SIGNAL ||
1.84 + sig == SIGBREAK) {
1.85 + return JNI_FALSE;
1.86 + }
1.87 + }
1.88 + os::signal_raise(sig);
1.89 + return JNI_TRUE;
1.90 +JVM_END
1.91 +
1.92 +
1.93 +/*
1.94 + All the defined signal names for Windows.
1.95 +
1.96 + NOTE that not all of these names are accepted by FindSignal!
1.97 +
1.98 + For various reasons some of these may be rejected at runtime.
1.99 +
1.100 + Here are the names currently accepted by a user of sun.misc.Signal with
1.101 + 1.4.1 (ignoring potential interaction with use of chaining, etc):
1.102 +
1.103 + (LIST TBD)
1.104 +
1.105 +*/
1.106 +struct siglabel {
1.107 + char *name;
1.108 + int number;
1.109 +};
1.110 +
1.111 +struct siglabel siglabels[] =
1.112 + /* derived from version 6.0 VC98/include/signal.h */
1.113 + {"ABRT", SIGABRT, /* abnormal termination triggered by abort cl */
1.114 + "FPE", SIGFPE, /* floating point exception */
1.115 + "SEGV", SIGSEGV, /* segment violation */
1.116 + "INT", SIGINT, /* interrupt */
1.117 + "TERM", SIGTERM, /* software term signal from kill */
1.118 + "BREAK", SIGBREAK, /* Ctrl-Break sequence */
1.119 + "ILL", SIGILL}; /* illegal instruction */
1.120 +
1.121 +JVM_ENTRY_NO_ENV(jint, JVM_FindSignal(const char *name))
1.122 + /* find and return the named signal's number */
1.123 +
1.124 + for(int i=0;i<sizeof(siglabels)/sizeof(struct siglabel);i++)
1.125 + if(!strcmp(name, siglabels[i].name))
1.126 + return siglabels[i].number;
1.127 + return -1;
1.128 +JVM_END
