Quelle vmError_windows.cpp Sprache: C

/*
* Copyright (c) 2003, 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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#include "precompiled.hpp"
#include "cds/metaspaceShared.hpp"
#include "runtime/arguments.hpp"
#include "runtime/javaThread.hpp"
#include "runtime/os.hpp"
#include "utilities/vmError.hpp"

LONG WINAPI crash_handler(struct _EXCEPTION_POINTERS* exceptionInfo) {
  DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode;
  VMError::report_and_die(NULL, exception_code, NULL, exceptionInfo->ExceptionRecord,
                          exceptionInfo->ContextRecord);
  return EXCEPTION_CONTINUE_SEARCH;
}

void VMError::install_secondary_signal_handler() {
  SetUnhandledExceptionFilter(crash_handler);
}

// Write a hint to the stream in case siginfo relates to a segv/bus error
// and the offending address points into CDS archive.
void VMError::check_failing_cds_access(outputStream* st, const void* siginfo) {
#if INCLUDE_CDS
  if (siginfo && UseSharedSpaces) {
    const EXCEPTION_RECORD* const er = (const EXCEPTION_RECORD*)siginfo;
    if (er->ExceptionCode == EXCEPTION_IN_PAGE_ERROR &&
        er->NumberParameters >= 2) {
      const void* const fault_addr = (const void*) er->ExceptionInformation[1];
      if (fault_addr != NULL) {
        if (MetaspaceShared::is_in_shared_metaspace(fault_addr)) {
          st->print("Error accessing class data sharing archive. "
            "Mapped file inaccessible during execution, possible disk/network problem.");
        }
      }
    }
  }
#endif
}

// Error reporting cancellation: there is no easy way to implement this on Windows, because we do
// not have an easy way to send signals to threads (aka to cause a win32 Exception in another
// thread). We would need something like "RaiseException(HANDLE thread)"...
void VMError::reporting_started() {}
void VMError::interrupt_reporting_thread() {}

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