1 /*
   2  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
   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  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "runtime/arguments.hpp"
  27 #include "runtime/os.hpp"
  28 #include "runtime/thread.hpp"
  29 #include "utilities/vmError.hpp"
  30 
  31 
  32 void VMError::show_message_box(char *buf, int buflen) {
  33   bool yes;
  34   do {
  35     error_string(buf, buflen);
  36     int len = (int)strlen(buf);
  37     char *p = &buf[len];
  38 
  39     jio_snprintf(p, buflen - len,
  40                "\n\n"
  41                "Do you want to debug the problem?\n\n"
  42                "To debug, attach Visual Studio to process %d; then switch to thread 0x%x\n"
  43                "Select 'Yes' to launch Visual Studio automatically (PATH must include msdev)\n"
  44                "Otherwise, select 'No' to abort...",
  45                os::current_process_id(), os::current_thread_id());
  46 
  47     yes = os::message_box("Unexpected Error", buf) != 0;
  48 
  49     if (yes) {
  50       // yes, user asked VM to launch debugger
  51       //
  52       // os::breakpoint() calls DebugBreak(), which causes a breakpoint
  53       // exception. If VM is running inside a debugger, the debugger will
  54       // catch the exception. Otherwise, the breakpoint exception will reach
  55       // the default windows exception handler, which can spawn a debugger and
  56       // automatically attach to the dying VM.
  57       os::breakpoint();
  58       yes = false;
  59     }
  60   } while (yes);
  61 }
  62 
  63 int VMError::get_resetted_sigflags(int sig) {
  64   return -1;
  65 }
  66 
  67 address VMError::get_resetted_sighandler(int sig) {
  68   return NULL;
  69 }
  70 
  71 LONG WINAPI crash_handler(struct _EXCEPTION_POINTERS* exceptionInfo) {
  72   DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode;
  73   VMError err(NULL, exception_code, NULL,
  74                 exceptionInfo->ExceptionRecord, exceptionInfo->ContextRecord);
  75   err.report_and_die();
  76   return EXCEPTION_CONTINUE_SEARCH;
  77 }
  78 
  79 void VMError::reset_signal_handlers() {
  80   SetUnhandledExceptionFilter(crash_handler);
  81 }