Mercurial > hg > truffle
annotate src/os/aix/vm/vmError_aix.cpp @ 18726:8153d8cf264c
Added unit test for StampFactoryTest.createParameterStamps.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Fri, 19 Dec 2014 14:58:50 +0100 |
parents | 666e6ce3976c |
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rev | line source |
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1 /* |
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2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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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. |
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22 * |
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23 */ |
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24 |
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25 #include "precompiled.hpp" |
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26 #include "runtime/arguments.hpp" |
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27 #include "runtime/os.hpp" |
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28 #include "runtime/thread.hpp" |
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29 #include "utilities/vmError.hpp" |
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30 |
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31 #include <sys/types.h> |
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32 #include <sys/wait.h> |
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33 #include <unistd.h> |
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34 #include <signal.h> |
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35 |
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36 void VMError::show_message_box(char *buf, int buflen) { |
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37 bool yes; |
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38 do { |
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39 error_string(buf, buflen); |
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40 int len = (int)strlen(buf); |
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41 char *p = &buf[len]; |
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42 |
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43 jio_snprintf(p, buflen - len, |
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44 "\n\n" |
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45 "Do you want to debug the problem?\n\n" |
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46 "To debug, run 'dbx -a %d'; then switch to thread tid " INTX_FORMAT ", k-tid " INTX_FORMAT "\n" |
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47 "Enter 'yes' to launch dbx automatically (PATH must include dbx)\n" |
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48 "Otherwise, press RETURN to abort...", |
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49 os::current_process_id(), |
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50 os::current_thread_id(), thread_self()); |
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51 |
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52 yes = os::message_box("Unexpected Error", buf); |
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53 |
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54 if (yes) { |
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55 // yes, user asked VM to launch debugger |
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56 jio_snprintf(buf, buflen, "dbx -a %d", os::current_process_id()); |
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57 |
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58 os::fork_and_exec(buf); |
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59 yes = false; |
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60 } |
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61 } while (yes); |
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62 } |
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63 |
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64 // Handle all synchronous signals which may happen during signal handling, |
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65 // not just SIGSEGV and SIGBUS. |
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66 static const int SIGNALS[] = { SIGSEGV, SIGBUS, SIGILL, SIGFPE, SIGTRAP }; // add more if needed |
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67 static const int NUM_SIGNALS = sizeof(SIGNALS) / sizeof(int); |
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68 |
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69 // Space for our "saved" signal flags and handlers |
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70 static int resettedSigflags[NUM_SIGNALS]; |
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71 static address resettedSighandler[NUM_SIGNALS]; |
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72 |
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73 static void save_signal(int idx, int sig) { |
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74 struct sigaction sa; |
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75 sigaction(sig, NULL, &sa); |
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76 resettedSigflags[idx] = sa.sa_flags; |
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77 resettedSighandler[idx] = (sa.sa_flags & SA_SIGINFO) |
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78 ? CAST_FROM_FN_PTR(address, sa.sa_sigaction) |
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79 : CAST_FROM_FN_PTR(address, sa.sa_handler); |
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80 } |
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81 |
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82 int VMError::get_resetted_sigflags(int sig) { |
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83 // Handle all program errors. |
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84 for (int i = 0; i < NUM_SIGNALS; i++) { |
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85 if (SIGNALS[i] == sig) { |
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86 return resettedSigflags[i]; |
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87 } |
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88 } |
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89 return -1; |
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90 } |
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91 |
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92 address VMError::get_resetted_sighandler(int sig) { |
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93 // Handle all program errors. |
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94 for (int i = 0; i < NUM_SIGNALS; i++) { |
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95 if (SIGNALS[i] == sig) { |
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96 return resettedSighandler[i]; |
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97 } |
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98 } |
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99 return NULL; |
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100 } |
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101 |
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102 static void crash_handler(int sig, siginfo_t* info, void* ucVoid) { |
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103 // Unmask current signal. |
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104 sigset_t newset; |
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105 sigemptyset(&newset); |
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106 sigaddset(&newset, sig); |
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107 |
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108 Unimplemented(); |
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109 } |
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110 |
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111 void VMError::reset_signal_handlers() { |
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112 sigset_t newset; |
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113 sigemptyset(&newset); |
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114 |
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115 for (int i = 0; i < NUM_SIGNALS; i++) { |
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116 save_signal(i, SIGNALS[i]); |
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117 os::signal(SIGNALS[i], CAST_FROM_FN_PTR(void *, crash_handler)); |
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118 sigaddset(&newset, SIGNALS[i]); |
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119 } |
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120 |
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121 sigthreadmask(SIG_UNBLOCK, &newset, NULL); |
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122 } |