diff options
Diffstat (limited to 'security/nss/lib/libpkix/pkix_pl_nss/system/pkix_pl_rwlock.c')
-rwxr-xr-x | security/nss/lib/libpkix/pkix_pl_nss/system/pkix_pl_rwlock.c | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/security/nss/lib/libpkix/pkix_pl_nss/system/pkix_pl_rwlock.c b/security/nss/lib/libpkix/pkix_pl_nss/system/pkix_pl_rwlock.c deleted file mode 100755 index 662931e98..000000000 --- a/security/nss/lib/libpkix/pkix_pl_nss/system/pkix_pl_rwlock.c +++ /dev/null @@ -1,217 +0,0 @@ -/* This Source Code Form is subject to the terms of the Mozilla Public - * License, v. 2.0. If a copy of the MPL was not distributed with this - * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ -/* - * pkix_pl_rwlock.c - * - * Read/Write Lock Functions - * - */ - -#include "pkix_pl_rwlock.h" - -/* --Private-Functions-------------------------------------------- */ - -static PKIX_Error * -pkix_pl_RWLock_Destroy( - PKIX_PL_Object *object, - void *plContext) -{ - PKIX_PL_RWLock* rwlock = NULL; - - PKIX_ENTER(RWLOCK, "pkix_pl_RWLock_Destroy"); - PKIX_NULLCHECK_ONE(object); - - PKIX_CHECK(pkix_CheckType(object, PKIX_RWLOCK_TYPE, plContext), - PKIX_OBJECTNOTRWLOCK); - - rwlock = (PKIX_PL_RWLock*) object; - - PKIX_RWLOCK_DEBUG("Calling PR_DestroyRWLock)\n"); - PR_DestroyRWLock(rwlock->lock); - rwlock->lock = NULL; - -cleanup: - - PKIX_RETURN(RWLOCK); -} - -/* - * FUNCTION: pkix_pl_RWLock_RegisterSelf - * DESCRIPTION: - * Registers PKIX_RWLOCK_TYPE and its related functions with systemClasses[] - * THREAD SAFETY: - * Not Thread Safe - for performance and complexity reasons - * - * Since this function is only called by PKIX_PL_Initialize, which should - * only be called once, it is acceptable that this function is not - * thread-safe. - */ -PKIX_Error * -pkix_pl_RWLock_RegisterSelf( - void *plContext) -{ - - extern pkix_ClassTable_Entry systemClasses[PKIX_NUMTYPES]; - pkix_ClassTable_Entry entry; - - PKIX_ENTER(RWLOCK, "pkix_pl_RWLock_RegisterSelf"); - - entry.description = "RWLock"; - entry.objCounter = 0; - entry.typeObjectSize = sizeof(PKIX_PL_RWLock); - entry.destructor = pkix_pl_RWLock_Destroy; - entry.equalsFunction = NULL; - entry.hashcodeFunction = NULL; - entry.toStringFunction = NULL; - entry.comparator = NULL; - entry.duplicateFunction = NULL; - - systemClasses[PKIX_RWLOCK_TYPE] = entry; - - PKIX_RETURN(RWLOCK); -} - -/* --Public-Functions--------------------------------------------- */ - -PKIX_Error * -PKIX_PL_RWLock_Create( - PKIX_PL_RWLock **pNewLock, - void *plContext) -{ - PKIX_PL_RWLock *rwLock = NULL; - - PKIX_ENTER(RWLOCK, "PKIX_PL_RWLock_Create"); - PKIX_NULLCHECK_ONE(pNewLock); - - PKIX_CHECK(PKIX_PL_Object_Alloc - (PKIX_RWLOCK_TYPE, - sizeof (PKIX_PL_RWLock), - (PKIX_PL_Object **)&rwLock, - plContext), - PKIX_ERRORALLOCATINGRWLOCK); - - PKIX_RWLOCK_DEBUG("\tCalling PR_NewRWLock)\n"); - rwLock->lock = PR_NewRWLock(PR_RWLOCK_RANK_NONE, "PKIX RWLock"); - - if (rwLock->lock == NULL) { - PKIX_DECREF(rwLock); - PKIX_ERROR(PKIX_OUTOFMEMORY); - } - - rwLock->readCount = 0; - rwLock->writeLocked = PKIX_FALSE; - - *pNewLock = rwLock; - -cleanup: - - PKIX_RETURN(RWLOCK); -} - -PKIX_Error * -PKIX_PL_AcquireReaderLock( - PKIX_PL_RWLock *lock, - void *plContext) -{ - PKIX_ENTER(RWLOCK, "PKIX_PL_AcquireReaderLock"); - PKIX_NULLCHECK_ONE(lock); - - PKIX_RWLOCK_DEBUG("\tCalling PR_RWLock_Rlock)\n"); - (void) PR_RWLock_Rlock(lock->lock); - - lock->readCount++; - - PKIX_RETURN(RWLOCK); -} - -PKIX_Error * -PKIX_PL_ReleaseReaderLock( - PKIX_PL_RWLock *lock, - void *plContext) -{ - PKIX_ENTER(RWLOCK, "PKIX_PL_ReleaseReaderLock"); - PKIX_NULLCHECK_ONE(lock); - - PKIX_RWLOCK_DEBUG("\tCalling PR_RWLock_Unlock)\n"); - (void) PR_RWLock_Unlock(lock->lock); - - lock->readCount--; - - PKIX_RETURN(RWLOCK); -} - -PKIX_Error * -PKIX_PL_IsReaderLockHeld( - PKIX_PL_RWLock *lock, - PKIX_Boolean *pIsHeld, - void *plContext) -{ - PKIX_ENTER(RWLOCK, "PKIX_PL_IsReaderLockHeld"); - PKIX_NULLCHECK_TWO(lock, pIsHeld); - - *pIsHeld = (lock->readCount > 0)?PKIX_TRUE:PKIX_FALSE; - - PKIX_RETURN(RWLOCK); -} - -PKIX_Error * -PKIX_PL_AcquireWriterLock( - PKIX_PL_RWLock *lock, - void *plContext) -{ - PKIX_ENTER(RWLOCK, "PKIX_PL_AcquireWriterLock"); - PKIX_NULLCHECK_ONE(lock); - - PKIX_RWLOCK_DEBUG("\tCalling PR_RWLock_Wlock\n"); - (void) PR_RWLock_Wlock(lock->lock); - - if (lock->readCount > 0) { - PKIX_ERROR(PKIX_LOCKHASNONZEROREADCOUNT); - } - - /* We should never acquire a write lock if the lock is held */ - lock->writeLocked = PKIX_TRUE; - -cleanup: - - PKIX_RETURN(RWLOCK); -} - -PKIX_Error * -PKIX_PL_ReleaseWriterLock( - PKIX_PL_RWLock *lock, - void *plContext) -{ - PKIX_ENTER(RWLOCK, "PKIX_PL_ReleaseWriterLock"); - PKIX_NULLCHECK_ONE(lock); - - if (lock->readCount > 0) { - PKIX_ERROR(PKIX_LOCKHASNONZEROREADCOUNT); - } - - PKIX_RWLOCK_DEBUG("\tCalling PR_RWLock_Unlock)\n"); - (void) PR_RWLock_Unlock(lock->lock); - - /* XXX Need to think about thread safety here */ - /* There should be a single lock holder */ - lock->writeLocked = PKIX_FALSE; - -cleanup: - - PKIX_RETURN(RWLOCK); -} - -PKIX_Error * -PKIX_PL_IsWriterLockHeld( - PKIX_PL_RWLock *lock, - PKIX_Boolean *pIsHeld, - void *plContext) -{ - PKIX_ENTER(RWLOCK, "PKIX_PL_IsWriterLockHeld"); - PKIX_NULLCHECK_TWO(lock, pIsHeld); - - *pIsHeld = lock->writeLocked; - - PKIX_RETURN(RWLOCK); -} |