1 files changed, 163 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..07d13695b
--- /dev/null
+++ b/security/nss/lib/libpkix/pkix_pl_nss/system/pkix_pl_mutex.c
@@ -0,0 +1,163 @@
+/* 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_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 occurred 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);
+}