Add av_calloc() helper.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Laurent Aimar 2011-09-24 18:39:13 +02:00 committed by Michael Niedermayer
parent 35cb6854bb
commit ccecab4a0d
2 changed files with 19 additions and 0 deletions

View File

@ -168,6 +168,13 @@ void *av_mallocz(size_t size)
return ptr; return ptr;
} }
void *av_calloc(size_t nmemb, size_t size)
{
if (size <= 0 || nmemb >= INT_MAX / size)
return NULL;
return av_mallocz(nmemb * size);
}
char *av_strdup(const char *s) char *av_strdup(const char *s)
{ {
char *ptr= NULL; char *ptr= NULL;

View File

@ -106,6 +106,18 @@ void av_free(void *ptr);
*/ */
void *av_mallocz(size_t size) av_malloc_attrib av_alloc_size(1); void *av_mallocz(size_t size) av_malloc_attrib av_alloc_size(1);
/**
* Allocate a block of nmemb * size bytes with alignment suitable for all
* memory accesses (including vectors if available on the CPU) and
* zero all the bytes of the block.
* The allocation will fail if nmemb * size is greater than or equal
* to INT_MAX.
* @param nmemb
* @param size
* @return Pointer to the allocated block, NULL if it cannot be allocated.
*/
void *av_calloc(size_t nmemb, size_t size) av_malloc_attrib;
/** /**
* Duplicate the string s. * Duplicate the string s.
* @param s string to be duplicated * @param s string to be duplicated