1 /* 2 * This file and its contents are supplied under the terms of the 3 * Common Development and Distribution License ("CDDL"), version 1.0. 4 * You may only use this file in accordance with the terms of version 5 * 1.0 of the CDDL. 6 * 7 * A full copy of the text of the CDDL should have accompanied this 8 * source. A copy of the CDDL is also available via the Internet at 9 * http://www.illumos.org/license/CDDL. 10 */ 11 12 /* 13 * Copyright 2017 Jason King 14 */ 15 16 #include <sys/debug.h> 17 #include <stdlib.h> 18 #include <string.h> 19 #include "demangle-sys.h" 20 #include "demangle_int.h" 21 22 void * 23 zalloc(sysdem_ops_t *ops, size_t len) 24 { 25 void *p = ops->alloc(len); 26 27 if (p != NULL) 28 (void) memset(p, 0, len); 29 30 #ifdef DEBUG 31 /* 32 * In normal operation, we should never exhaust memory. Either 33 * something's wrong, or the system is so hosed that aborting 34 * shouldn't hurt anything, and it gives us a more useful stack 35 * trace. 36 */ 37 if (p == NULL) 38 abort(); 39 #endif 40 41 return (p); 42 } 43 44 void 45 xfree(sysdem_ops_t *ops, void *p, size_t len) 46 { 47 if (p == NULL || len == 0) 48 return; 49 50 ops->free(p, len); 51 } 52 53 void * 54 xrealloc(sysdem_ops_t *ops, void *p, size_t oldsz, size_t newsz) 55 { 56 if (newsz == oldsz) 57 return (p); 58 59 VERIFY3U(newsz, >, oldsz); 60 61 void *temp = zalloc(ops, newsz); 62 63 if (temp == NULL) 64 return (NULL); 65 66 if (oldsz > 0) { 67 (void) memcpy(temp, p, oldsz); 68 xfree(ops, p, oldsz); 69 } 70 71 return (temp); 72 } 73 74 /*ARGSUSED*/ 75 static void 76 def_free(void *p, size_t len) 77 { 78 free(p); 79 } 80 81 static sysdem_ops_t i_sysdem_ops_default = { 82 .alloc = malloc, 83 .free = def_free 84 }; 85 sysdem_ops_t *sysdem_ops_default = &i_sysdem_ops_default; 86