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mempool: add function to iterate the memory chunks

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In the same model than rte_mempool_obj_iter(), introduce
rte_mempool_mem_iter() to iterate the memory chunks attached
to the mempool.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
This commit is contained in:
Olivier Matz 2016-05-18 13:04:37 +02:00 committed by Thomas Monjalon
parent 84121f1971
commit b18e19a892
3 changed files with 44 additions and 0 deletions
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16
lib/librte_mempool/rte_mempool.c
View File

@ -246,6 +246,22 @@ rte_mempool_obj_iter(struct rte_mempool *mp,
return n;
}
/* call mem_cb() for each mempool memory chunk */
uint32_t
rte_mempool_mem_iter(struct rte_mempool *mp,
rte_mempool_mem_cb_t *mem_cb, void *mem_cb_arg)
{
struct rte_mempool_memhdr *hdr;
unsigned n = 0;
STAILQ_FOREACH(hdr, &mp->mem_list, next) {
mem_cb(mp, mem_cb_arg, hdr, n);
n++;
}
return n;
}
/* get the header, trailer and total size of a mempool element. */
uint32_t
rte_mempool_calc_obj_size(uint32_t elt_size, uint32_t flags,

27
lib/librte_mempool/rte_mempool.h
View File

@ -335,6 +335,15 @@ typedef void (rte_mempool_obj_cb_t)(struct rte_mempool *mp,
void *opaque, void *obj, unsigned obj_idx);
typedef rte_mempool_obj_cb_t rte_mempool_obj_ctor_t; /* compat */
/**
* A memory callback function for mempool.
*
* Used by rte_mempool_mem_iter().
*/
typedef void (rte_mempool_mem_cb_t)(struct rte_mempool *mp,
void *opaque, struct rte_mempool_memhdr *memhdr,
unsigned mem_idx);
/**
* A mempool constructor callback function.
*
@ -605,6 +614,24 @@ rte_dom0_mempool_create(const char *name, unsigned n, unsigned elt_size,
uint32_t rte_mempool_obj_iter(struct rte_mempool *mp,
rte_mempool_obj_cb_t *obj_cb, void *obj_cb_arg);
/**
* Call a function for each mempool memory chunk
*
* Iterate across all memory chunks attached to a rte_mempool and call
* the callback function on it.
*
* @param mp
* A pointer to an initialized mempool.
* @param mem_cb
* A function pointer that is called for each memory chunk.
* @param mem_cb_arg
* An opaque pointer passed to the callback function.
* @return
* Number of memory chunks iterated.
*/
uint32_t rte_mempool_mem_iter(struct rte_mempool *mp,
rte_mempool_mem_cb_t *mem_cb, void *mem_cb_arg);
/**
* Dump the status of the mempool to the console.
*

1
lib/librte_mempool/rte_mempool_version.map
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@ -22,6 +22,7 @@ DPDK_16.07 {
rte_mempool_check_cookies;
rte_mempool_obj_iter;
rte_mempool_mem_iter;
local: *;
} DPDK_2.0;