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      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