--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/os/solaris/vm/jvm_solaris.cpp Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,148 @@
+/*
+ * Copyright 1998-2007 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+#include "incls/_precompiled.incl"
+#include "incls/_jvm_solaris.cpp.incl"
+
+#include <signal.h>
+
+// sun.misc.Signal ///////////////////////////////////////////////////////////
+// Signal code is mostly copied from classic vm, signals_md.c 1.4 98/08/23
+/*
+ * This function is included primarily as a debugging aid. If Java is
+ * running in a console window, then pressing <CTRL-\\> will cause
+ * the current state of all active threads and monitors to be written
+ * to the console window.
+ */
+
+JVM_ENTRY_NO_ENV(void*, JVM_RegisterSignal(jint sig, void* handler))
+ // Copied from classic vm
+ // signals_md.c 1.4 98/08/23
+ void* newHandler = handler == (void *)2
+ ? os::user_handler()
+ : handler;
+ switch (sig) {
+ /* The following are already used by the VM. */
+ case SIGFPE:
+ case SIGILL:
+ case SIGSEGV:
+
+ /* The following signal is used by the VM to dump thread stacks unless
+ ReduceSignalUsage is set, in which case the user is allowed to set
+ his own _native_ handler for this signal; thus, in either case,
+ we do not allow JVM_RegisterSignal to change the handler. */
+ case BREAK_SIGNAL:
+ return (void *)-1;
+
+ /* The following signals are used for Shutdown Hooks support. However, if
+ ReduceSignalUsage (-Xrs) is set, Shutdown Hooks must be invoked via
+ System.exit(), Java is not allowed to use these signals, and the the
+ user is allowed to set his own _native_ handler for these signals and
+ invoke System.exit() as needed. Terminator.setup() is avoiding
+ registration of these signals when -Xrs is present.
+ - If the HUP signal is ignored (from the nohup) command, then Java
+ is not allowed to use this signal.
+ */
+ case SHUTDOWN1_SIGNAL:
+ case SHUTDOWN2_SIGNAL:
+ case SHUTDOWN3_SIGNAL:
+ if (ReduceSignalUsage) return (void*)-1;
+ if (os::Solaris::is_sig_ignored(sig)) return (void*)1;
+ }
+
+ /* Check parameterized signals. Don't allow sharing of our interrupt signal */
+ if (sig == os::Solaris::SIGinterrupt()) {
+ return (void *)-1;
+ }
+
+ void* oldHandler = os::signal(sig, newHandler);
+ if (oldHandler == os::user_handler()) {
+ return (void *)2;
+ } else {
+ return oldHandler;
+ }
+JVM_END
+
+
+JVM_ENTRY_NO_ENV(jboolean, JVM_RaiseSignal(jint sig))
+ if (ReduceSignalUsage) {
+ // do not allow SHUTDOWN1_SIGNAL,SHUTDOWN2_SIGNAL,SHUTDOWN3_SIGNAL,
+ // BREAK_SIGNAL to be raised when ReduceSignalUsage is set, since
+ // no handler for them is actually registered in JVM or via
+ // JVM_RegisterSignal.
+ if (sig == SHUTDOWN1_SIGNAL || sig == SHUTDOWN2_SIGNAL ||
+ sig == SHUTDOWN3_SIGNAL || sig == BREAK_SIGNAL) {
+ return JNI_FALSE;
+ }
+ }
+ else if ((sig == SHUTDOWN1_SIGNAL || sig == SHUTDOWN2_SIGNAL ||
+ sig == SHUTDOWN3_SIGNAL) && os::Solaris::is_sig_ignored(sig)) {
+ // do not allow SHUTDOWN1_SIGNAL to be raised when SHUTDOWN1_SIGNAL
+ // is ignored, since no handler for them is actually registered in JVM
+ // or via JVM_RegisterSignal.
+ // This also applies for SHUTDOWN2_SIGNAL and SHUTDOWN3_SIGNAL
+ return JNI_FALSE;
+ }
+
+ os::signal_raise(sig);
+ return JNI_TRUE;
+JVM_END
+
+
+/*
+ All the defined signal names for Solaris are defined by str2sig().
+
+ NOTE that not all of these names are accepted by our Java implementation
+
+ Via an existing claim by the VM, sigaction restrictions, or
+ the "rules of Unix" some of these names will be rejected at runtime.
+ For example the VM sets up to handle USR1, sigaction returns EINVAL for
+ CANCEL, and Solaris simply doesn't allow catching of KILL.
+
+ Here are the names currently accepted by a user of sun.misc.Signal with
+ 1.4.1 (ignoring potential interaction with use of chaining, etc):
+
+ HUP, INT, TRAP, IOT, ABRT, EMT, BUS, SYS, PIPE, ALRM, TERM, USR2,
+ CLD, CHLD, PWR, WINCH, URG, POLL, IO, TSTP, CONT, TTIN, TTOU, VTALRM,
+ PROF, XCPU, XFSZ, FREEZE, THAW, LOST
+*/
+
+JVM_ENTRY_NO_ENV(jint, JVM_FindSignal(const char *name))
+
+ int sig;
+
+ /* return the named signal's number */
+
+ if(str2sig(name, &sig))
+ return -1;
+ else
+ return sig;
+
+JVM_END
+
+
+//Reconciliation History
+// 1.4 98/10/07 13:39:41 jvm_win32.cpp
+// 1.6 99/06/22 16:39:00 jvm_win32.cpp
+//End