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       1                 :            : /*
       2                 :            :  * Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
       3                 :            :  * All rights reserved.
       4                 :            :  *
       5                 :            :  * Redistribution and use in source and binary forms, with or without
       6                 :            :  * modification, are permitted provided that the following conditions
       7                 :            :  * are met:
       8                 :            :  * 1. Redistributions of source code must retain the above copyright
       9                 :            :  *    notice, this list of conditions and the following disclaimer.
      10                 :            :  * 2. Redistributions in binary form must reproduce the above copyright
      11                 :            :  *    notice, this list of conditions and the following disclaimer in the
      12                 :            :  *    documentation and/or other materials provided with the distribution.
      13                 :            :  * 3. The name of the author may not be used to endorse or promote products
      14                 :            :  *    derived from this software without specific prior written permission.
      15                 :            :  *
      16                 :            :  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
      17                 :            :  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
      18                 :            :  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
      19                 :            :  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
      20                 :            :  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
      21                 :            :  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      22                 :            :  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      23                 :            :  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      24                 :            :  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
      25                 :            :  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      26                 :            :  */
      27                 :            : 
      28                 :            : #include "defs.h"
      29                 :            : 
      30                 :          0 : void die_out_of_memory(void)
      31                 :            : {
      32                 :            :         static bool recursed = false;
      33                 :            : 
      34         [ #  # ]:          0 :         if (recursed)
      35                 :          0 :                 exit(1);
      36                 :          0 :         recursed = 1;
      37                 :            : 
      38                 :          0 :         error_msg_and_die("Out of memory");
      39                 :            : }
      40                 :            : 
      41                 :      14479 : void *xmalloc(size_t size)
      42                 :            : {
      43                 :      14479 :         void *p = malloc(size);
      44                 :            : 
      45         [ -  + ]:      14479 :         if (!p)
      46                 :          0 :                 die_out_of_memory();
      47                 :            : 
      48                 :      14479 :         return p;
      49                 :            : }
      50                 :            : 
      51                 :      19281 : void *xcalloc(size_t nmemb, size_t size)
      52                 :            : {
      53                 :      19281 :         void *p = calloc(nmemb, size);
      54                 :            : 
      55         [ -  + ]:      19281 :         if (!p)
      56                 :          0 :                 die_out_of_memory();
      57                 :            : 
      58                 :      19281 :         return p;
      59                 :            : }
      60                 :            : 
      61                 :            : #define HALF_SIZE_T     (((size_t) 1) << (sizeof(size_t) * 4))
      62                 :            : 
      63                 :     117045 : void *xreallocarray(void *ptr, size_t nmemb, size_t size)
      64                 :            : {
      65                 :     117045 :         size_t bytes = nmemb * size;
      66                 :            : 
      67 [ -  + ][ #  # ]:     117045 :         if ((nmemb | size) >= HALF_SIZE_T &&
      68         [ #  # ]:          0 :             size && bytes / size != nmemb)
      69                 :          0 :                 die_out_of_memory();
      70                 :            : 
      71                 :     117045 :         void *p = realloc(ptr, bytes);
      72                 :            : 
      73         [ -  + ]:     117045 :         if (!p)
      74                 :          0 :                 die_out_of_memory();
      75                 :            : 
      76                 :     117045 :         return p;
      77                 :            : }
      78                 :            : 
      79                 :      18219 : char *xstrdup(const char *str)
      80                 :            : {
      81                 :      18219 :         char *p = strdup(str);
      82                 :            : 
      83         [ -  + ]:      18219 :         if (!p)
      84                 :          0 :                 die_out_of_memory();
      85                 :            : 
      86                 :      18219 :         return p;
      87                 :            : }