diff options
Diffstat (limited to 'security/nss/lib/libpkix/pkix_pl_nss/system/pkix_pl_mutex.c')
| -rwxr-xr-x | security/nss/lib/libpkix/pkix_pl_nss/system/pkix_pl_mutex.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/security/nss/lib/libpkix/pkix_pl_nss/system/pkix_pl_mutex.c b/security/nss/lib/libpkix/pkix_pl_nss/system/pkix_pl_mutex.c new file mode 100755 index 000000000..1d3d9d94d --- /dev/null +++ b/security/nss/lib/libpkix/pkix_pl_nss/system/pkix_pl_mutex.c @@ -0,0 +1,196 @@ +/* ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is the PKIX-C library. + * + * The Initial Developer of the Original Code is + * Sun Microsystems, Inc. + * Portions created by the Initial Developer are + * Copyright 2004-2007 Sun Microsystems, Inc. All Rights Reserved. + * + * Contributor(s): + * Sun Microsystems, Inc. + * + * Alternatively, the contents of this file may be used under the terms of + * either the GNU General Public License Version 2 or later (the "GPL"), or + * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ +/* + * pkix_pl_mutex.c + * + * Mutual Exclusion (Lock) Object Functions + * + */ + +#include "pkix_pl_mutex.h" + +/* --Private-Functions-------------------------------------------- */ + +/* + * FUNCTION: pkix_pl_Mutex_Destroy + * (see comments for PKIX_PL_DestructorCallback in pkix_pl_system.h) + */ +static PKIX_Error * +pkix_pl_Mutex_Destroy( + PKIX_PL_Object *object, + void *plContext) +{ + PKIX_PL_Mutex *mutex = NULL; + + PKIX_ENTER(MUTEX, "pkix_pl_Mutex_Destroy"); + PKIX_NULLCHECK_ONE(object); + + /* Sanity check: Test that "object" is a mutex */ + PKIX_CHECK(pkix_CheckType(object, PKIX_MUTEX_TYPE, plContext), + PKIX_OBJECTNOTMUTEX); + + mutex = (PKIX_PL_Mutex*) object; + + PKIX_MUTEX_DEBUG("\tCalling PR_DestroyLock).\n"); + PR_DestroyLock(mutex->lock); + mutex->lock = NULL; + +cleanup: + + PKIX_RETURN(MUTEX); +} + +/* + * FUNCTION: pkix_pl_Mutex_RegisterSelf + * DESCRIPTION: + * Registers PKIX_MUTEX_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_Mutex_RegisterSelf( + /* ARGSUSED */ void *plContext) +{ + + extern pkix_ClassTable_Entry systemClasses[PKIX_NUMTYPES]; + pkix_ClassTable_Entry entry; + + PKIX_ENTER(MUTEX, "pkix_pl_Mutex_RegisterSelf"); + + entry.description = "Mutex"; + entry.objCounter = 0; + entry.typeObjectSize = sizeof(PKIX_PL_Mutex); + entry.destructor = pkix_pl_Mutex_Destroy; + entry.equalsFunction = NULL; + entry.hashcodeFunction = NULL; + entry.toStringFunction = NULL; + entry.comparator = NULL; + entry.duplicateFunction = NULL; + + systemClasses[PKIX_MUTEX_TYPE] = entry; + + PKIX_RETURN(MUTEX); +} + +/* --Public-Functions--------------------------------------------- */ + +/* + * FUNCTION: PKIX_PL_Mutex_Create (see comments in pkix_pl_system.h) + */ +PKIX_Error * +PKIX_PL_Mutex_Create( + PKIX_PL_Mutex **pNewLock, + void *plContext) +{ + PKIX_PL_Mutex *mutex = NULL; + + PKIX_ENTER(MUTEX, "PKIX_PL_Mutex_Create"); + PKIX_NULLCHECK_ONE(pNewLock); + + PKIX_CHECK(PKIX_PL_Object_Alloc + (PKIX_MUTEX_TYPE, + sizeof (PKIX_PL_Mutex), + (PKIX_PL_Object **)&mutex, + plContext), + PKIX_COULDNOTCREATELOCKOBJECT); + + PKIX_MUTEX_DEBUG("\tCalling PR_NewLock).\n"); + mutex->lock = PR_NewLock(); + + /* If an error occured in NSPR, report it here */ + if (mutex->lock == NULL) { + PKIX_DECREF(mutex); + PKIX_ERROR_ALLOC_ERROR(); + } + + *pNewLock = mutex; + +cleanup: + + PKIX_RETURN(MUTEX); +} + +/* + * FUNCTION: PKIX_PL_Mutex_Lock (see comments in pkix_pl_system.h) + */ +PKIX_Error * +PKIX_PL_Mutex_Lock( + PKIX_PL_Mutex *mutex, + void *plContext) +{ + PKIX_ENTER(MUTEX, "PKIX_PL_Mutex_Lock"); + PKIX_NULLCHECK_ONE(mutex); + + PKIX_MUTEX_DEBUG("\tCalling PR_Lock).\n"); + PR_Lock(mutex->lock); + + PKIX_MUTEX_DEBUG_ARG("(Thread %u just acquired the lock)\n", + (PKIX_UInt32)PR_GetCurrentThread()); + + PKIX_RETURN(MUTEX); +} + +/* + * FUNCTION: PKIX_PL_Mutex_Unlock (see comments in pkix_pl_system.h) + */ +PKIX_Error * +PKIX_PL_Mutex_Unlock( + PKIX_PL_Mutex *mutex, + void *plContext) +{ + PRStatus result; + + PKIX_ENTER(MUTEX, "PKIX_PL_Mutex_Unlock"); + PKIX_NULLCHECK_ONE(mutex); + + PKIX_MUTEX_DEBUG("\tCalling PR_Unlock).\n"); + result = PR_Unlock(mutex->lock); + + PKIX_MUTEX_DEBUG_ARG("(Thread %u just released the lock)\n", + (PKIX_UInt32)PR_GetCurrentThread()); + + if (result == PR_FAILURE) { + PKIX_ERROR_FATAL(PKIX_ERRORUNLOCKINGMUTEX); + } + +cleanup: + PKIX_RETURN(MUTEX); +} |