1 /* $NetBSD: mm-internal.h,v 1.1.1.3 2021/04/07 02:43:12 christos Exp $ */ 2 /* 3 * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson 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 #ifndef MM_INTERNAL_H_INCLUDED_ 28 #define MM_INTERNAL_H_INCLUDED_ 29 30 #include <sys/types.h> 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 #ifndef EVENT__DISABLE_MM_REPLACEMENT 37 /* Internal use only: Memory allocation functions. We give them nice short 38 * mm_names for our own use, but make sure that the symbols have longer names 39 * so they don't conflict with other libraries (like, say, libmm). */ 40 41 /** Allocate uninitialized memory. 42 * 43 * @return On success, return a pointer to sz newly allocated bytes. 44 * On failure, set errno to ENOMEM and return NULL. 45 * If the argument sz is 0, simply return NULL. 46 */ 47 EVENT2_EXPORT_SYMBOL 48 void *event_mm_malloc_(size_t sz); 49 50 /** Allocate memory initialized to zero. 51 * 52 * @return On success, return a pointer to (count * size) newly allocated 53 * bytes, initialized to zero. 54 * On failure, or if the product would result in an integer overflow, 55 * set errno to ENOMEM and return NULL. 56 * If either arguments are 0, simply return NULL. 57 */ 58 EVENT2_EXPORT_SYMBOL 59 void *event_mm_calloc_(size_t count, size_t size); 60 61 /** Duplicate a string. 62 * 63 * @return On success, return a pointer to a newly allocated duplicate 64 * of a string. 65 * Set errno to ENOMEM and return NULL if a memory allocation error 66 * occurs (or would occur) in the process. 67 * If the argument str is NULL, set errno to EINVAL and return NULL. 68 */ 69 EVENT2_EXPORT_SYMBOL 70 char *event_mm_strdup_(const char *str); 71 72 EVENT2_EXPORT_SYMBOL 73 void *event_mm_realloc_(void *p, size_t sz); 74 EVENT2_EXPORT_SYMBOL 75 void event_mm_free_(void *p); 76 #define mm_malloc(sz) event_mm_malloc_(sz) 77 #define mm_calloc(count, size) event_mm_calloc_((count), (size)) 78 #define mm_strdup(s) event_mm_strdup_(s) 79 #define mm_realloc(p, sz) event_mm_realloc_((p), (sz)) 80 #define mm_free(p) event_mm_free_(p) 81 #else 82 #define mm_malloc(sz) malloc(sz) 83 #define mm_calloc(n, sz) calloc((n), (sz)) 84 #define mm_strdup(s) strdup(s) 85 #define mm_realloc(p, sz) realloc((p), (sz)) 86 #define mm_free(p) free(p) 87 #endif 88 89 #ifdef __cplusplus 90 } 91 #endif 92 93 #endif 94