1 /* 2 * Copyright (c) 2015 Dmitry V. Levin <ldv (at) 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 void die_out_of_memory(void) 31 { 32 static bool recursed = false; 33 34 if (recursed) 35 exit(1); 36 recursed = 1; 37 38 error_msg_and_die("Out of memory"); 39 } 40 41 void *xmalloc(size_t size) 42 { 43 void *p = malloc(size); 44 45 if (!p) 46 die_out_of_memory(); 47 48 return p; 49 } 50 51 void *xcalloc(size_t nmemb, size_t size) 52 { 53 void *p = calloc(nmemb, size); 54 55 if (!p) 56 die_out_of_memory(); 57 58 return p; 59 } 60 61 #define HALF_SIZE_T (((size_t) 1) << (sizeof(size_t) * 4)) 62 63 void *xreallocarray(void *ptr, size_t nmemb, size_t size) 64 { 65 size_t bytes = nmemb * size; 66 67 if ((nmemb | size) >= HALF_SIZE_T && 68 size && bytes / size != nmemb) 69 die_out_of_memory(); 70 71 void *p = realloc(ptr, bytes); 72 73 if (!p) 74 die_out_of_memory(); 75 76 return p; 77 } 78 79 char *xstrdup(const char *str) 80 { 81 char *p = strdup(str); 82 83 if (!p) 84 die_out_of_memory(); 85 86 return p; 87 } 88
