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kc3-lang/libevent/mm-internal.h

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  • Author : Azat Khuzhin
    Date : 2017-03-12 20:50:35
    Hash : 9081b66c
    Message : Export symbols for -fvisibility=hidden (under cmake) Fixes: #442

  • mm-internal.h
  • /*
     * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     */
    #ifndef MM_INTERNAL_H_INCLUDED_
    #define MM_INTERNAL_H_INCLUDED_
    
    #include <sys/types.h>
    
    #ifdef __cplusplus
    extern "C" {
    #endif
    
    #ifndef EVENT__DISABLE_MM_REPLACEMENT
    /* Internal use only: Memory allocation functions. We give them nice short
     * mm_names for our own use, but make sure that the symbols have longer names
     * so they don't conflict with other libraries (like, say, libmm). */
    
    /** Allocate uninitialized memory.
     *
     * @return On success, return a pointer to sz newly allocated bytes.
     *     On failure, set errno to ENOMEM and return NULL.
     *     If the argument sz is 0, simply return NULL.
     */
    EVENT2_EXPORT_SYMBOL
    void *event_mm_malloc_(size_t sz);
    
    /** Allocate memory initialized to zero.
     *
     * @return On success, return a pointer to (count * size) newly allocated
     *     bytes, initialized to zero.
     *     On failure, or if the product would result in an integer overflow,
     *     set errno to ENOMEM and return NULL.
     *     If either arguments are 0, simply return NULL.
     */
    EVENT2_EXPORT_SYMBOL
    void *event_mm_calloc_(size_t count, size_t size);
    
    /** Duplicate a string.
     *
     * @return On success, return a pointer to a newly allocated duplicate
     *     of a string.
     *     Set errno to ENOMEM and return NULL if a memory allocation error
     *     occurs (or would occur) in the process.
     *     If the argument str is NULL, set errno to EINVAL and return NULL.
     */
    EVENT2_EXPORT_SYMBOL
    char *event_mm_strdup_(const char *str);
    
    EVENT2_EXPORT_SYMBOL
    void *event_mm_realloc_(void *p, size_t sz);
    EVENT2_EXPORT_SYMBOL
    void event_mm_free_(void *p);
    #define mm_malloc(sz) event_mm_malloc_(sz)
    #define mm_calloc(count, size) event_mm_calloc_((count), (size))
    #define mm_strdup(s) event_mm_strdup_(s)
    #define mm_realloc(p, sz) event_mm_realloc_((p), (sz))
    #define mm_free(p) event_mm_free_(p)
    #else
    #define mm_malloc(sz) malloc(sz)
    #define mm_calloc(n, sz) calloc((n), (sz))
    #define mm_strdup(s) strdup(s)
    #define mm_realloc(p, sz) realloc((p), (sz))
    #define mm_free(p) free(p)
    #endif
    
    #ifdef __cplusplus
    }
    #endif
    
    #endif