Mercurial > hg > graal-compiler
annotate src/os/linux/vm/vmError_linux.cpp @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
|---|---|
| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | a61af66fc99e |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
2 * Copyright (c) 2003, 2006, 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 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 # include "incls/_precompiled.incl" | |
| 26 # include "incls/_vmError_linux.cpp.incl" | |
| 27 | |
| 28 #include <sys/types.h> | |
| 29 #include <sys/wait.h> | |
| 30 #include <sys/syscall.h> | |
| 31 #include <unistd.h> | |
| 32 #include <signal.h> | |
| 33 | |
| 34 void VMError::show_message_box(char *buf, int buflen) { | |
| 35 bool yes; | |
| 36 do { | |
| 37 error_string(buf, buflen); | |
| 38 int len = (int)strlen(buf); | |
| 39 char *p = &buf[len]; | |
| 40 | |
| 41 jio_snprintf(p, buflen - len, | |
| 42 "\n\n" | |
| 43 "Do you want to debug the problem?\n\n" | |
| 44 "To debug, run 'gdb /proc/%d/exe %d'; then switch to thread " INTX_FORMAT "\n" | |
| 45 "Enter 'yes' to launch gdb automatically (PATH must include gdb)\n" | |
| 46 "Otherwise, press RETURN to abort...", | |
| 47 os::current_process_id(), os::current_process_id(), | |
| 48 os::current_thread_id()); | |
| 49 | |
| 50 yes = os::message_box("Unexpected Error", buf); | |
| 51 | |
| 52 if (yes) { | |
| 53 // yes, user asked VM to launch debugger | |
| 54 jio_snprintf(buf, buflen, "gdb /proc/%d/exe %d", | |
| 55 os::current_process_id(), os::current_process_id()); | |
| 56 | |
| 57 os::fork_and_exec(buf); | |
| 58 yes = false; | |
| 59 } | |
| 60 } while (yes); | |
| 61 } | |
| 62 | |
| 63 // Space for our "saved" signal flags and handlers | |
| 64 static int resettedSigflags[2]; | |
| 65 static address resettedSighandler[2]; | |
| 66 | |
| 67 static void save_signal(int idx, int sig) | |
| 68 { | |
| 69 struct sigaction sa; | |
| 70 sigaction(sig, NULL, &sa); | |
| 71 resettedSigflags[idx] = sa.sa_flags; | |
| 72 resettedSighandler[idx] = (sa.sa_flags & SA_SIGINFO) | |
| 73 ? CAST_FROM_FN_PTR(address, sa.sa_sigaction) | |
| 74 : CAST_FROM_FN_PTR(address, sa.sa_handler); | |
| 75 } | |
| 76 | |
| 77 int VMError::get_resetted_sigflags(int sig) { | |
| 78 if(SIGSEGV == sig) { | |
| 79 return resettedSigflags[0]; | |
| 80 } else if(SIGBUS == sig) { | |
| 81 return resettedSigflags[1]; | |
| 82 } | |
| 83 return -1; | |
| 84 } | |
| 85 | |
| 86 address VMError::get_resetted_sighandler(int sig) { | |
| 87 if(SIGSEGV == sig) { | |
| 88 return resettedSighandler[0]; | |
| 89 } else if(SIGBUS == sig) { | |
| 90 return resettedSighandler[1]; | |
| 91 } | |
| 92 return NULL; | |
| 93 } | |
| 94 | |
| 95 static void crash_handler(int sig, siginfo_t* info, void* ucVoid) { | |
| 96 // unmask current signal | |
| 97 sigset_t newset; | |
| 98 sigemptyset(&newset); | |
| 99 sigaddset(&newset, sig); | |
| 100 sigprocmask(SIG_UNBLOCK, &newset, NULL); | |
| 101 | |
| 102 VMError err(NULL, sig, NULL, info, ucVoid); | |
| 103 err.report_and_die(); | |
| 104 } | |
| 105 | |
| 106 void VMError::reset_signal_handlers() { | |
| 107 // Save sigflags for resetted signals | |
| 108 save_signal(0, SIGSEGV); | |
| 109 save_signal(1, SIGBUS); | |
| 110 os::signal(SIGSEGV, CAST_FROM_FN_PTR(void *, crash_handler)); | |
| 111 os::signal(SIGBUS, CAST_FROM_FN_PTR(void *, crash_handler)); | |
| 112 } |