Delete bundled copy of NSS and replace with README.

nss/lib/libpkix/pkix_pl_nss/system/pkix_pl_rwlock.c

-/* 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);
-}