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

    33 void 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