[dpdk-dev] [PATCH] hash: added rte_hash_clear that clears all keys

[Tomas Vestelind]

Hi Bruce!

Oh yea, this patch is quite old :)

I'm currently not working actively with DPDK. If no one else wants to do 
it, I could do the update and add a unit test

/Tomas

On 2015-03-06 12:10, Bruce Richardson wrote:
> On Tue, Aug 12, 2014 at 11:47:57PM +0200, Tomas Vestelind wrote:
>> I added rte_hash_clear which clear the map from all previously added
>> keys.
>>
> This patch is now quite old and needs an update to add the new API to the
> rte_hash_version.map. A unit test for the new function would also be good to
> have. Otherwise patch content looks ok. Is an updated V2 planned?
>
> Regards,
> /Bruce
>
>> Signed-off-by: Tomas Vestelind <tomas.vestelind at gmail.com>
>> ---
>>   lib/librte_hash/rte_hash.c |   14 ++++++++++++++
>>   lib/librte_hash/rte_hash.h |   10 ++++++++++
>>   2 files changed, 24 insertions(+)
>>
>> diff --git a/lib/librte_hash/rte_hash.c b/lib/librte_hash/rte_hash.c
>> index 2108c4f..917a6c1 100644
>> --- a/lib/librte_hash/rte_hash.c
>> +++ b/lib/librte_hash/rte_hash.c
>> @@ -507,3 +507,17 @@ rte_hash_keys(const struct rte_hash *h, void *keys)
>>   
>>       return found_keys;
>>   }
>> +
>> +void
>> +rte_hash_clear(const struct rte_hash *h)
>> +{
>> +    unsigned int bucket, entry;
>> +
>> +    /* Clear all entries by invalidating each signature */
>> +    for (bucket = 0; bucket < h->num_buckets; bucket++) {
>> +        hash_sig_t *sig = get_sig_tbl_bucket(h, bucket);
>> +        for (entry = 0; entry < h->bucket_entries; entry++) {
>> +            sig[entry] = NULL_SIGNATURE;
>> +        }
>> +    }
>> +}
>> diff --git a/lib/librte_hash/rte_hash.h b/lib/librte_hash/rte_hash.h
>> index e0fb28f..b84137e 100644
>> --- a/lib/librte_hash/rte_hash.h
>> +++ b/lib/librte_hash/rte_hash.h
>> @@ -318,6 +318,16 @@ rte_hash_lookup_bulk(const struct rte_hash *h, const void **keys,
>>    */
>>   unsigned int
>>   rte_hash_keys(const struct rte_hash *h, void *keys);
>> +
>> +/**
>> + * Clear all keys. This operation is not multi-thread safe and should only be
>> + * called from one thread.
>> + *
>> + * @param h
>> + *   Hash table to clear.
>> + */
>> +void
>> +rte_hash_clear(const struct rte_hash *h);
>>   #ifdef __cplusplus
>>   }
>>   #endif
>> -- 
>> 1.7.10.4
>>
>
>