ffaadcecea
Oops should be loaded from the constant table of an nmethod instead of materializing them with a long code sequence. Reviewed-by: never, kvn
116 lines
3.6 KiB
C++
116 lines
3.6 KiB
C++
/*
|
|
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*
|
|
*/
|
|
|
|
#include "precompiled.hpp"
|
|
#include "runtime/arguments.hpp"
|
|
#include "runtime/os.hpp"
|
|
#include "runtime/thread.hpp"
|
|
#include "utilities/vmError.hpp"
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/wait.h>
|
|
#include <sys/syscall.h>
|
|
#include <unistd.h>
|
|
#include <signal.h>
|
|
|
|
void VMError::show_message_box(char *buf, int buflen) {
|
|
bool yes;
|
|
do {
|
|
error_string(buf, buflen);
|
|
int len = (int)strlen(buf);
|
|
char *p = &buf[len];
|
|
|
|
jio_snprintf(p, buflen - len,
|
|
"\n\n"
|
|
"Do you want to debug the problem?\n\n"
|
|
"To debug, run 'gdb /proc/%d/exe %d'; then switch to thread " INTX_FORMAT " (" INTPTR_FORMAT ")\n"
|
|
"Enter 'yes' to launch gdb automatically (PATH must include gdb)\n"
|
|
"Otherwise, press RETURN to abort...",
|
|
os::current_process_id(), os::current_process_id(),
|
|
os::current_thread_id(), os::current_thread_id());
|
|
|
|
yes = os::message_box("Unexpected Error", buf);
|
|
|
|
if (yes) {
|
|
// yes, user asked VM to launch debugger
|
|
jio_snprintf(buf, buflen, "gdb /proc/%d/exe %d",
|
|
os::current_process_id(), os::current_process_id());
|
|
|
|
os::fork_and_exec(buf);
|
|
yes = false;
|
|
}
|
|
} while (yes);
|
|
}
|
|
|
|
// Space for our "saved" signal flags and handlers
|
|
static int resettedSigflags[2];
|
|
static address resettedSighandler[2];
|
|
|
|
static void save_signal(int idx, int sig)
|
|
{
|
|
struct sigaction sa;
|
|
sigaction(sig, NULL, &sa);
|
|
resettedSigflags[idx] = sa.sa_flags;
|
|
resettedSighandler[idx] = (sa.sa_flags & SA_SIGINFO)
|
|
? CAST_FROM_FN_PTR(address, sa.sa_sigaction)
|
|
: CAST_FROM_FN_PTR(address, sa.sa_handler);
|
|
}
|
|
|
|
int VMError::get_resetted_sigflags(int sig) {
|
|
if(SIGSEGV == sig) {
|
|
return resettedSigflags[0];
|
|
} else if(SIGBUS == sig) {
|
|
return resettedSigflags[1];
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
address VMError::get_resetted_sighandler(int sig) {
|
|
if(SIGSEGV == sig) {
|
|
return resettedSighandler[0];
|
|
} else if(SIGBUS == sig) {
|
|
return resettedSighandler[1];
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static void crash_handler(int sig, siginfo_t* info, void* ucVoid) {
|
|
// unmask current signal
|
|
sigset_t newset;
|
|
sigemptyset(&newset);
|
|
sigaddset(&newset, sig);
|
|
sigprocmask(SIG_UNBLOCK, &newset, NULL);
|
|
|
|
VMError err(NULL, sig, NULL, info, ucVoid);
|
|
err.report_and_die();
|
|
}
|
|
|
|
void VMError::reset_signal_handlers() {
|
|
// Save sigflags for resetted signals
|
|
save_signal(0, SIGSEGV);
|
|
save_signal(1, SIGBUS);
|
|
os::signal(SIGSEGV, CAST_FROM_FN_PTR(void *, crash_handler));
|
|
os::signal(SIGBUS, CAST_FROM_FN_PTR(void *, crash_handler));
|
|
}
|