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mempool: add API for malloc semantics

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This works like k_malloc() but allows the user to designate
a specific memory pool to use instead of the kernel heap.

Test coverage provided by existing tests for k_malloc(), which is
now derived from this API.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This commit is contained in:
Andrew Boie 2018-04-12 16:59:02 -07:00 • committed by Andrew Boie
commit a2480bd472
3 changed files with 56 additions and 33 deletions
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14
include/kernel.h
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@ -3652,6 +3652,17 @@ struct k_mem_pool {
extern int k_mem_pool_alloc(struct k_mem_pool *pool, struct k_mem_block *block,
size_t size, s32_t timeout);
/**
* @brief Allocate memory from a memory pool with malloc() semantics
*
* Such memory must be released using k_free().
*
* @param pool Address of the memory pool.
* @param size Amount of memory to allocate (in bytes).
* @return Address of the allocated memory if successful, otherwise NULL
*/
extern void *k_mem_pool_malloc(struct k_mem_pool *pool, size_t size);
/**
* @brief Free memory allocated from a memory pool.
*
@ -3702,7 +3713,8 @@ extern void *k_malloc(size_t size);
* @brief Free memory allocated from heap.
*
* This routine provides traditional free() semantics. The memory being
* returned must have been allocated from the heap memory pool.
* returned must have been allocated from the heap memory pool or
* k_mem_pool_malloc().
*
* If @a ptr is NULL, no operation is performed.
*