os_posix.cpp revision 2085:63d374c54045 
1/*
2* Copyright (c) 1999, 2011, 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 "prims/jvm.h"
26#include "runtime/os.hpp"
27#include "utilities/vmError.hpp"
28
29#include <unistd.h>
30#include <sys/resource.h>
31
32// Check core dump limit and report possible place where core can be found
33void os::check_or_create_dump(void* exceptionRecord, void* contextRecord, char* buffer, size_t bufferSize) {
34  struct rlimit rlim;
35  static char cwd[O_BUFLEN];
36  bool success;
37
38  get_current_directory(cwd, sizeof(cwd));
39
40  if (getrlimit(RLIMIT_CORE, &rlim) != 0) {
41    jio_snprintf(buffer, bufferSize, "%s/core or core.%d (may not exist)", cwd, current_process_id());
42    success = true;
43  } else {
44    switch(rlim.rlim_cur) {
45      case RLIM_INFINITY:
46        jio_snprintf(buffer, bufferSize, "%s/core or core.%d", cwd, current_process_id());
47        success = true;
48        break;
49      case 0:
50        jio_snprintf(buffer, bufferSize, "Core dumps have been disabled. To enable core dumping, try \"ulimit -c unlimited\" before starting Java again");
51        success = false;
52        break;
53      default:
54        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));
55        success = true;
56        break;
57    }
58  }
59  VMError::report_coredump_status(buffer, success);
60}
61
62