michaelh/zephyr
1
0
Fork 0
Code Releases Activity

mempool: add k_calloc()

Browse source 
This uses the kernel heap to implement traditional calloc()
semantics.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This commit is contained in:
Andrew Boie 2017-11-08 14:40:01 -08:00 • committed by Andrew Boie
commit 7f95e83361
2 changed files with 26 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

13
include/kernel.h
View file

@ -3704,6 +3704,19 @@ extern void *k_malloc(size_t size);
*/
extern void k_free(void *ptr);
/**
* @brief Allocate memory from heap, array style
*
* This routine provides traditional calloc() semantics. Memory is
* allocated from the heap memory pool and zeroed.
*
* @param nmemb Number of elements in the requested array
* @param size Size of each array element (in bytes).
*
* @return Address of the allocated memory if successful; otherwise NULL.
*/
extern void *k_calloc(size_t nmemb, size_t size);
/**
* @} end defgroup heap_apis
*/

13
kernel/mempool.c
View file

@ -405,4 +405,17 @@ void k_free(void *ptr)
k_mem_pool_free(ptr);
}
}
void *k_calloc(size_t nmemb, size_t size)
{
void *ret;
size_t bounds;
bounds = nmemb * size;
ret = k_malloc(bounds);
if (ret) {
memset(ret, 0, bounds);
}
return ret;
}
#endif