Mercurial > jdk8-mips64-public > hotspot / annotate
src/os/aix/vm/vmError_aix.cpp@f90c822e73f8 (annotated)
src/os/aix/vm/vmError_aix.cpp
Wed, 27 Apr 2016 01:25:04 +0800
- author
- aoqi
- date
- Wed, 27 Apr 2016 01:25:04 +0800
- changeset 0
- f90c822e73f8
- permissions
- -rw-r--r--
Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. |
| aoqi@0 | 8 | * |
| aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 13 | * accompanied this code). |
| aoqi@0 | 14 | * |
| aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 18 | * |
| aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 21 | * questions. |
| aoqi@0 | 22 | * |
| aoqi@0 | 23 | */ |
| aoqi@0 | 24 | |
| aoqi@0 | 25 | #include "precompiled.hpp" |
| aoqi@0 | 26 | #include "runtime/arguments.hpp" |
| aoqi@0 | 27 | #include "runtime/os.hpp" |
| aoqi@0 | 28 | #include "runtime/thread.hpp" |
| aoqi@0 | 29 | #include "utilities/vmError.hpp" |
| aoqi@0 | 30 | |
| aoqi@0 | 31 | #include <sys/types.h> |
| aoqi@0 | 32 | #include <sys/wait.h> |
| aoqi@0 | 33 | #include <unistd.h> |
| aoqi@0 | 34 | #include <signal.h> |
| aoqi@0 | 35 | |
| aoqi@0 | 36 | void VMError::show_message_box(char *buf, int buflen) { |
| aoqi@0 | 37 | bool yes; |
| aoqi@0 | 38 | do { |
| aoqi@0 | 39 | error_string(buf, buflen); |
| aoqi@0 | 40 | int len = (int)strlen(buf); |
| aoqi@0 | 41 | char *p = &buf[len]; |
| aoqi@0 | 42 | |
| aoqi@0 | 43 | jio_snprintf(p, buflen - len, |
| aoqi@0 | 44 | "\n\n" |
| aoqi@0 | 45 | "Do you want to debug the problem?\n\n" |
| aoqi@0 | 46 | "To debug, run 'dbx -a %d'; then switch to thread tid " INTX_FORMAT ", k-tid " INTX_FORMAT "\n" |
| aoqi@0 | 47 | "Enter 'yes' to launch dbx automatically (PATH must include dbx)\n" |
| aoqi@0 | 48 | "Otherwise, press RETURN to abort...", |
| aoqi@0 | 49 | os::current_process_id(), |
| aoqi@0 | 50 | os::current_thread_id(), thread_self()); |
| aoqi@0 | 51 | |
| aoqi@0 | 52 | yes = os::message_box("Unexpected Error", buf); |
| aoqi@0 | 53 | |
| aoqi@0 | 54 | if (yes) { |
| aoqi@0 | 55 | // yes, user asked VM to launch debugger |
| aoqi@0 | 56 | jio_snprintf(buf, buflen, "dbx -a %d", os::current_process_id()); |
| aoqi@0 | 57 | |
| aoqi@0 | 58 | os::fork_and_exec(buf); |
| aoqi@0 | 59 | yes = false; |
| aoqi@0 | 60 | } |
| aoqi@0 | 61 | } while (yes); |
| aoqi@0 | 62 | } |
| aoqi@0 | 63 | |
| aoqi@0 | 64 | // Handle all synchronous signals which may happen during signal handling, |
| aoqi@0 | 65 | // not just SIGSEGV and SIGBUS. |
| aoqi@0 | 66 | static const int SIGNALS[] = { SIGSEGV, SIGBUS, SIGILL, SIGFPE, SIGTRAP }; // add more if needed |
| aoqi@0 | 67 | static const int NUM_SIGNALS = sizeof(SIGNALS) / sizeof(int); |
| aoqi@0 | 68 | |
| aoqi@0 | 69 | // Space for our "saved" signal flags and handlers |
| aoqi@0 | 70 | static int resettedSigflags[NUM_SIGNALS]; |
| aoqi@0 | 71 | static address resettedSighandler[NUM_SIGNALS]; |
| aoqi@0 | 72 | |
| aoqi@0 | 73 | static void save_signal(int idx, int sig) { |
| aoqi@0 | 74 | struct sigaction sa; |
| aoqi@0 | 75 | sigaction(sig, NULL, &sa); |
| aoqi@0 | 76 | resettedSigflags[idx] = sa.sa_flags; |
| aoqi@0 | 77 | resettedSighandler[idx] = (sa.sa_flags & SA_SIGINFO) |
| aoqi@0 | 78 | ? CAST_FROM_FN_PTR(address, sa.sa_sigaction) |
| aoqi@0 | 79 | : CAST_FROM_FN_PTR(address, sa.sa_handler); |
| aoqi@0 | 80 | } |
| aoqi@0 | 81 | |
| aoqi@0 | 82 | int VMError::get_resetted_sigflags(int sig) { |
| aoqi@0 | 83 | // Handle all program errors. |
| aoqi@0 | 84 | for (int i = 0; i < NUM_SIGNALS; i++) { |
| aoqi@0 | 85 | if (SIGNALS[i] == sig) { |
| aoqi@0 | 86 | return resettedSigflags[i]; |
| aoqi@0 | 87 | } |
| aoqi@0 | 88 | } |
| aoqi@0 | 89 | return -1; |
| aoqi@0 | 90 | } |
| aoqi@0 | 91 | |
| aoqi@0 | 92 | address VMError::get_resetted_sighandler(int sig) { |
| aoqi@0 | 93 | // Handle all program errors. |
| aoqi@0 | 94 | for (int i = 0; i < NUM_SIGNALS; i++) { |
| aoqi@0 | 95 | if (SIGNALS[i] == sig) { |
| aoqi@0 | 96 | return resettedSighandler[i]; |
| aoqi@0 | 97 | } |
| aoqi@0 | 98 | } |
| aoqi@0 | 99 | return NULL; |
| aoqi@0 | 100 | } |
| aoqi@0 | 101 | |
| aoqi@0 | 102 | static void crash_handler(int sig, siginfo_t* info, void* ucVoid) { |
| aoqi@0 | 103 | // Unmask current signal. |
| aoqi@0 | 104 | sigset_t newset; |
| aoqi@0 | 105 | sigemptyset(&newset); |
| aoqi@0 | 106 | sigaddset(&newset, sig); |
| aoqi@0 | 107 | |
| aoqi@0 | 108 | Unimplemented(); |
| aoqi@0 | 109 | } |
| aoqi@0 | 110 | |
| aoqi@0 | 111 | void VMError::reset_signal_handlers() { |
| aoqi@0 | 112 | sigset_t newset; |
| aoqi@0 | 113 | sigemptyset(&newset); |
| aoqi@0 | 114 | |
| aoqi@0 | 115 | for (int i = 0; i < NUM_SIGNALS; i++) { |
| aoqi@0 | 116 | save_signal(i, SIGNALS[i]); |
| aoqi@0 | 117 | os::signal(SIGNALS[i], CAST_FROM_FN_PTR(void *, crash_handler)); |
| aoqi@0 | 118 | sigaddset(&newset, SIGNALS[i]); |
| aoqi@0 | 119 | } |
| aoqi@0 | 120 | |
| aoqi@0 | 121 | sigthreadmask(SIG_UNBLOCK, &newset, NULL); |
| aoqi@0 | 122 | } |
