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Code Issues Releases Wiki Activity

1944. [cleanup] isc_hash_create() does not need a read/write lock.

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[RT #15522]
This commit is contained in:
Mark Andrews 2006-01-03 05:51:15 +00:00
parent 01db0feafa
commit be2c2c29a8
2 changed files with 8 additions and 6 deletions
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3
CHANGES
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@ -1,3 +1,6 @@
1944. [cleanup] isc_hash_create() does not need a read/write lock.
[RT #15522]
1943. [bug] Set the loadtime after rolling forward the journal.
[RT #15647]

11
lib/isc/hash.c
View File

@ -15,7 +15,7 @@
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: hash.c,v 1.9 2005/07/12 01:00:17 marka Exp $ */
/* $Id: hash.c,v 1.10 2006/01/03 05:51:15 marka Exp $ */
/*! \file
* Some portion of this code was derived from universal hash function
@ -66,7 +66,6 @@ if advised of the possibility of such damage.
#include <isc/once.h>
#include <isc/random.h>
#include <isc/refcount.h>
#include <isc/rwlock.h>
#include <isc/string.h>
#include <isc/util.h>
@ -100,7 +99,7 @@ struct isc_hash {
hash_random_t *rndvector; /*%< random vector for universal hashing */
};
static isc_rwlock_t createlock;
static isc_mutex_t createlock;
static isc_once_t once = ISC_ONCE_INIT;
static isc_hash_t *hash = NULL;
@ -213,7 +212,7 @@ isc_hash_ctxcreate(isc_mem_t *mctx, isc_entropy_t *entropy,
static void
initialize_lock(void) {
RUNTIME_CHECK(isc_rwlock_init(&createlock, 0, 0) == ISC_R_SUCCESS);
RUNTIME_CHECK(isc_mutex_init(&createlock) == ISC_R_SUCCESS);
}
isc_result_t
@ -225,12 +224,12 @@ isc_hash_create(isc_mem_t *mctx, isc_entropy_t *entropy, size_t limit) {
RUNTIME_CHECK(isc_once_do(&once, initialize_lock) == ISC_R_SUCCESS);
RWLOCK(&createlock, isc_rwlocktype_write);
LOCK(&createlock);
if (hash == NULL)
result = isc_hash_ctxcreate(mctx, entropy, limit, &hash);
RWUNLOCK(&createlock, isc_rwlocktype_write);
UNLOCK(&createlock);
return (result);
}