1 /* $NetBSD: mm-internal.h,v 1.6 2024/08/18 20:47:21 christos Exp $ */ 2 3 /* 4 * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 #ifndef MM_INTERNAL_H_INCLUDED_ 29 #define MM_INTERNAL_H_INCLUDED_ 30 31 #include <sys/types.h> 32 33 #ifdef __cplusplus 34 extern "C" { 35 #endif 36 37 #ifndef EVENT__DISABLE_MM_REPLACEMENT 38 /* Internal use only: Memory allocation functions. We give them nice short 39 * mm_names for our own use, but make sure that the symbols have longer names 40 * so they don't conflict with other libraries (like, say, libmm). */ 41 42 /** Allocate uninitialized memory. 43 * 44 * @return On success, return a pointer to sz newly allocated bytes. 45 * On failure, set errno to ENOMEM and return NULL. 46 * If the argument sz is 0, simply return NULL. 47 */ 48 EVENT2_EXPORT_SYMBOL 49 void *event_mm_malloc_(size_t sz); 50 51 /** Allocate memory initialized to zero. 52 * 53 * @return On success, return a pointer to (count * size) newly allocated 54 * bytes, initialized to zero. 55 * On failure, or if the product would result in an integer overflow, 56 * set errno to ENOMEM and return NULL. 57 * If either arguments are 0, simply return NULL. 58 */ 59 EVENT2_EXPORT_SYMBOL 60 void *event_mm_calloc_(size_t count, size_t size); 61 62 /** Duplicate a string. 63 * 64 * @return On success, return a pointer to a newly allocated duplicate 65 * of a string. 66 * Set errno to ENOMEM and return NULL if a memory allocation error 67 * occurs (or would occur) in the process. 68 * If the argument str is NULL, set errno to EINVAL and return NULL. 69 */ 70 EVENT2_EXPORT_SYMBOL 71 char *event_mm_strdup_(const char *str); 72 73 EVENT2_EXPORT_SYMBOL 74 void *event_mm_realloc_(void *p, size_t sz); 75 EVENT2_EXPORT_SYMBOL 76 void event_mm_free_(void *p); 77 #define mm_malloc(sz) event_mm_malloc_(sz) 78 #define mm_calloc(count, size) event_mm_calloc_((count), (size)) 79 #define mm_strdup(s) event_mm_strdup_(s) 80 #define mm_realloc(p, sz) event_mm_realloc_((p), (sz)) 81 #define mm_free(p) event_mm_free_(p) 82 #else 83 #define mm_malloc(sz) malloc(sz) 84 #define mm_calloc(n, sz) calloc((n), (sz)) 85 #define mm_strdup(s) strdup(s) 86 #define mm_realloc(p, sz) realloc((p), (sz)) 87 #define mm_free(p) free(p) 88 #endif 89 90 #ifdef __cplusplus 91 } 92 #endif 93 94 #endif 95