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Diffstat (limited to 'libevent/mm-internal.h')
-rw-r--r-- | libevent/mm-internal.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/libevent/mm-internal.h b/libevent/mm-internal.h new file mode 100644 index 0000000..7a95c99 --- /dev/null +++ b/libevent/mm-internal.h @@ -0,0 +1,92 @@ +/* + * 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 |