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108 lines
2.5 KiB
108 lines
2.5 KiB
/* |
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* Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org> |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include "defs.h" |
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static void die_out_of_memory(void) |
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{ |
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static bool recursed; |
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if (recursed) |
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exit(1); |
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recursed = 1; |
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error_msg_and_die("Out of memory"); |
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} |
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void *xmalloc(size_t size) |
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{ |
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void *p = malloc(size); |
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if (!p) |
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die_out_of_memory(); |
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return p; |
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} |
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void *xcalloc(size_t nmemb, size_t size) |
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{ |
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void *p = calloc(nmemb, size); |
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if (!p) |
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die_out_of_memory(); |
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return p; |
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} |
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#define HALF_SIZE_T (((size_t) 1) << (sizeof(size_t) * 4)) |
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void *xreallocarray(void *ptr, size_t nmemb, size_t size) |
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{ |
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size_t bytes = nmemb * size; |
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if ((nmemb | size) >= HALF_SIZE_T && |
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size && bytes / size != nmemb) |
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die_out_of_memory(); |
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void *p = realloc(ptr, bytes); |
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if (!p) |
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die_out_of_memory(); |
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return p; |
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} |
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char *xstrdup(const char *str) |
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{ |
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char *p = strdup(str); |
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if (!p) |
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die_out_of_memory(); |
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return p; |
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} |
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char *xstrndup(const char *str, size_t n) |
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{ |
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char *p; |
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#ifdef HAVE_STRNDUP |
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p = strndup(str, n); |
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#else |
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p = xmalloc(n + 1); |
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#endif |
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if (!p) |
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die_out_of_memory(); |
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#ifndef HAVE_STRNDUP |
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strncpy(p, str, n); |
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p[n] = '\0'; |
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#endif |
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return p; |
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}
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