Mercurial > hg > truffle
annotate src/os/linux/vm/vmError_linux.cpp @ 1972:f95d63e2154a
6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg
| author | stefank |
|---|---|
| date | Tue, 23 Nov 2010 13:22:55 -0800 |
| parents | c18cbe5936b8 |
| children | 2f644f85485d |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "runtime/arguments.hpp" | |
| 27 #include "runtime/os.hpp" | |
| 28 #include "runtime/thread.hpp" | |
| 29 #include "utilities/vmError.hpp" | |
| 0 | 30 |
| 31 #include <sys/types.h> | |
| 32 #include <sys/wait.h> | |
| 33 #include <sys/syscall.h> | |
| 34 #include <unistd.h> | |
| 35 #include <signal.h> | |
| 36 | |
| 37 void VMError::show_message_box(char *buf, int buflen) { | |
| 38 bool yes; | |
| 39 do { | |
| 40 error_string(buf, buflen); | |
| 41 int len = (int)strlen(buf); | |
| 42 char *p = &buf[len]; | |
| 43 | |
| 44 jio_snprintf(p, buflen - len, | |
| 45 "\n\n" | |
| 46 "Do you want to debug the problem?\n\n" | |
| 47 "To debug, run 'gdb /proc/%d/exe %d'; then switch to thread " INTX_FORMAT "\n" | |
| 48 "Enter 'yes' to launch gdb automatically (PATH must include gdb)\n" | |
| 49 "Otherwise, press RETURN to abort...", | |
| 50 os::current_process_id(), os::current_process_id(), | |
| 51 os::current_thread_id()); | |
| 52 | |
| 53 yes = os::message_box("Unexpected Error", buf); | |
| 54 | |
| 55 if (yes) { | |
| 56 // yes, user asked VM to launch debugger | |
| 57 jio_snprintf(buf, buflen, "gdb /proc/%d/exe %d", | |
| 58 os::current_process_id(), os::current_process_id()); | |
| 59 | |
| 60 os::fork_and_exec(buf); | |
| 61 yes = false; | |
| 62 } | |
| 63 } while (yes); | |
| 64 } | |
| 65 | |
| 66 // Space for our "saved" signal flags and handlers | |
| 67 static int resettedSigflags[2]; | |
| 68 static address resettedSighandler[2]; | |
| 69 | |
| 70 static void save_signal(int idx, int sig) | |
| 71 { | |
| 72 struct sigaction sa; | |
| 73 sigaction(sig, NULL, &sa); | |
| 74 resettedSigflags[idx] = sa.sa_flags; | |
| 75 resettedSighandler[idx] = (sa.sa_flags & SA_SIGINFO) | |
| 76 ? CAST_FROM_FN_PTR(address, sa.sa_sigaction) | |
| 77 : CAST_FROM_FN_PTR(address, sa.sa_handler); | |
| 78 } | |
| 79 | |
| 80 int VMError::get_resetted_sigflags(int sig) { | |
| 81 if(SIGSEGV == sig) { | |
| 82 return resettedSigflags[0]; | |
| 83 } else if(SIGBUS == sig) { | |
| 84 return resettedSigflags[1]; | |
| 85 } | |
| 86 return -1; | |
| 87 } | |
| 88 | |
| 89 address VMError::get_resetted_sighandler(int sig) { | |
| 90 if(SIGSEGV == sig) { | |
| 91 return resettedSighandler[0]; | |
| 92 } else if(SIGBUS == sig) { | |
| 93 return resettedSighandler[1]; | |
| 94 } | |
| 95 return NULL; | |
| 96 } | |
| 97 | |
| 98 static void crash_handler(int sig, siginfo_t* info, void* ucVoid) { | |
| 99 // unmask current signal | |
| 100 sigset_t newset; | |
| 101 sigemptyset(&newset); | |
| 102 sigaddset(&newset, sig); | |
| 103 sigprocmask(SIG_UNBLOCK, &newset, NULL); | |
| 104 | |
| 105 VMError err(NULL, sig, NULL, info, ucVoid); | |
| 106 err.report_and_die(); | |
| 107 } | |
| 108 | |
| 109 void VMError::reset_signal_handlers() { | |
| 110 // Save sigflags for resetted signals | |
| 111 save_signal(0, SIGSEGV); | |
| 112 save_signal(1, SIGBUS); | |
| 113 os::signal(SIGSEGV, CAST_FROM_FN_PTR(void *, crash_handler)); | |
| 114 os::signal(SIGBUS, CAST_FROM_FN_PTR(void *, crash_handler)); | |
| 115 } |