Mercurial > hg > truffle
view src/os/linux/vm/vmError_linux.cpp @ 21225:422c91256dd9
Run SSADestructionPhase only if SSA_LIR is enabled.
author | Josef Eisl <josef.eisl@jku.at> |
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date | Wed, 29 Apr 2015 11:57:47 +0200 |
parents | c3e799c37717 |
children |
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/* * 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 " UINTX_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)); }