ceph/src/seastar/dpdk/lib/librte_eal/linuxapp/eal/eal_debug.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #ifdef RTE_BACKTRACE
  35 #include <execinfo.h>
  36 #endif
  37 #include <stdarg.h>
  38 #include <signal.h>
  39 #include <stdlib.h>
  40 #include <stdio.h>
  41 #include <stdint.h>
  42
  43 #include <rte_log.h>
  44 #include <rte_debug.h>
  45 #include <rte_common.h>
  46
  47 #define BACKTRACE_SIZE 256
  48
  49 /* dump the stack of the calling core */
  50 void rte_dump_stack(void)
  51 {
  52 #ifdef RTE_BACKTRACE
  53         void *func[BACKTRACE_SIZE];
  54         char **symb = NULL;
  55         int size;
  56
  57         size = backtrace(func, BACKTRACE_SIZE);
  58         symb = backtrace_symbols(func, size);
  59
  60         if (symb == NULL)
  61                 return;
  62
  63         while (size > 0) {
  64                 rte_log(RTE_LOG_ERR, RTE_LOGTYPE_EAL,
  65                         "%d: [%s]\n", size, symb[size - 1]);
  66                 size --;
  67         }
  68
  69         free(symb);
  70 #endif /* RTE_BACKTRACE */
  71 }
  72
  73 /* not implemented in this environment */
  74 void rte_dump_registers(void)
  75 {
  76         return;
  77 }
  78
  79 /* call abort(), it will generate a coredump if enabled */
  80 void __rte_panic(const char *funcname, const char *format, ...)
  81 {
  82         va_list ap;
  83
  84         rte_log(RTE_LOG_CRIT, RTE_LOGTYPE_EAL, "PANIC in %s():\n", funcname);
  85         va_start(ap, format);
  86         rte_vlog(RTE_LOG_CRIT, RTE_LOGTYPE_EAL, format, ap);
  87         va_end(ap);
  88         rte_dump_stack();
  89         rte_dump_registers();
  90         abort();
  91 }
  92
  93 /*
  94  * Like rte_panic this terminates the application. However, no traceback is
  95  * provided and no core-dump is generated.
  96  */
  97 void
  98 rte_exit(int exit_code, const char *format, ...)
  99 {
 100         va_list ap;
 101
 102         if (exit_code != 0)
 103                 RTE_LOG(CRIT, EAL, "Error - exiting with code: %d\n"
 104                                 "  Cause: ", exit_code);
 105
 106         va_start(ap, format);
 107         rte_vlog(RTE_LOG_CRIT, RTE_LOGTYPE_EAL, format, ap);
 108         va_end(ap);
 109
 110 #ifndef RTE_EAL_ALWAYS_PANIC_ON_ERROR
 111         exit(exit_code);
 112 #else
 113         rte_dump_stack();
 114         rte_dump_registers();
 115         abort();
 116 #endif
 117 }