/*

* Copyright (c) 1999, 2011, 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.

*

* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

* or visit www.oracle.com if you need additional information or have any

* questions.

*

*/

#include "prims/jvm.h"

#include "runtime/os.hpp"

#include "utilities/vmError.hpp"

#include <unistd.h>

#include <sys/resource.h>

// Check core dump limit and report possible place where core can be found

void os::check_or_create_dump(void* exceptionRecord, void* contextRecord, char* buffer, size_t bufferSize) {

  struct rlimit rlim;

  static char cwd[O_BUFLEN];

  bool success;

  get_current_directory(cwd, sizeof(cwd));

  if (getrlimit(RLIMIT_CORE, &rlim) != 0) {

    jio_snprintf(buffer, bufferSize, "%s/core or core.%d (may not exist)", cwd, current_process_id());

    success = true;

  } else {

    switch(rlim.rlim_cur) {

      case RLIM_INFINITY:

        jio_snprintf(buffer, bufferSize, "%s/core or core.%d", cwd, current_process_id());

        success = true;

        break;

      case 0:

        jio_snprintf(buffer, bufferSize, "Core dumps have been disabled. To enable core dumping, try \"ulimit -c unlimited\" before starting Java again");

        success = false;

        break;

      default:

        jio_snprintf(buffer, bufferSize, "%s/core or core.%d (max size %lu kB). To ensure a full core dump, try \"ulimit -c unlimited\" before starting Java again", cwd, current_process_id(), (unsigned long)(rlim.rlim_cur >> 10));

        success = true;

        break;

    }

  }

  VMError::report_coredump_status(buffer, success);

}

int os::get_last_error() {

  return errno;

}

bool os::is_debugger_attached() {

  // not implemented

  return false;

}

void os::wait_for_keypress_at_exit(void) {

  // don't do anything on posix platforms

  return;

}