mm-internal.h (3501B)
1 /* 2 * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 3. The name of the author may not be used to endorse or promote products 13 * derived from this software without specific prior written permission. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 #ifndef MM_INTERNAL_H_INCLUDED_ 27 #define MM_INTERNAL_H_INCLUDED_ 28 29 #include <sys/types.h> 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 #ifndef EVENT__DISABLE_MM_REPLACEMENT 36 /* Internal use only: Memory allocation functions. We give them nice short 37 * mm_names for our own use, but make sure that the symbols have longer names 38 * so they don't conflict with other libraries (like, say, libmm). */ 39 40 /** Allocate uninitialized memory. 41 * 42 * @return On success, return a pointer to sz newly allocated bytes. 43 * On failure, set errno to ENOMEM and return NULL. 44 * If the argument sz is 0, simply return NULL. 45 */ 46 EVENT2_EXPORT_SYMBOL 47 void *event_mm_malloc_(size_t sz); 48 49 /** Allocate memory initialized to zero. 50 * 51 * @return On success, return a pointer to (count * size) newly allocated 52 * bytes, initialized to zero. 53 * On failure, or if the product would result in an integer overflow, 54 * set errno to ENOMEM and return NULL. 55 * If either arguments are 0, simply return NULL. 56 */ 57 EVENT2_EXPORT_SYMBOL 58 void *event_mm_calloc_(size_t count, size_t size); 59 60 /** Duplicate a string. 61 * 62 * @return On success, return a pointer to a newly allocated duplicate 63 * of a string. 64 * Set errno to ENOMEM and return NULL if a memory allocation error 65 * occurs (or would occur) in the process. 66 * If the argument str is NULL, set errno to EINVAL and return NULL. 67 */ 68 EVENT2_EXPORT_SYMBOL 69 char *event_mm_strdup_(const char *str); 70 71 EVENT2_EXPORT_SYMBOL 72 void *event_mm_realloc_(void *p, size_t sz); 73 EVENT2_EXPORT_SYMBOL 74 void event_mm_free_(void *p); 75 #define mm_malloc(sz) event_mm_malloc_(sz) 76 #define mm_calloc(count, size) event_mm_calloc_((count), (size)) 77 #define mm_strdup(s) event_mm_strdup_(s) 78 #define mm_realloc(p, sz) event_mm_realloc_((p), (sz)) 79 #define mm_free(p) event_mm_free_(p) 80 #else 81 #define mm_malloc(sz) malloc(sz) 82 #define mm_calloc(n, sz) calloc((n), (sz)) 83 #define mm_strdup(s) strdup(s) 84 #define mm_realloc(p, sz) realloc((p), (sz)) 85 #define mm_free(p) free(p) 86 #endif 87 88 #ifdef __cplusplus 89 } 90 #endif 91 92 #endif