diff options
Diffstat (limited to 'metis/ccnx/forwarder/metis/processor/metis_PitEntry.c')
-rw-r--r-- | metis/ccnx/forwarder/metis/processor/metis_PitEntry.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/metis/ccnx/forwarder/metis/processor/metis_PitEntry.c b/metis/ccnx/forwarder/metis/processor/metis_PitEntry.c new file mode 100644 index 00000000..4b65960b --- /dev/null +++ b/metis/ccnx/forwarder/metis/processor/metis_PitEntry.c @@ -0,0 +1,164 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + + +#include <config.h> +#include <stdio.h> + +#include <parc/algol/parc_Memory.h> +#include <ccnx/forwarder/metis/processor/metis_PitEntry.h> +#include <ccnx/forwarder/metis/core/metis_NumberSet.h> + +#include <LongBow/runtime.h> + +struct metis_pit_entry { + MetisMessage *message; + MetisNumberSet *ingressIdSet; + MetisNumberSet *egressIdSet; + + MetisFibEntry *fibEntry; + + MetisTicks creationTime; + MetisTicks expiryTime; + + unsigned refcount; +}; + +MetisPitEntry * +metisPitEntry_Create(MetisMessage *message, MetisTicks expiryTime, MetisTicks creationTime) +{ + MetisPitEntry *pitEntry = parcMemory_AllocateAndClear(sizeof(MetisPitEntry)); + assertNotNull(pitEntry, "parcMemory_AllocateAndClear(%zu) returned NULL", sizeof(MetisPitEntry)); + pitEntry->message = message; + pitEntry->ingressIdSet = metisNumberSet_Create(); + pitEntry->egressIdSet = metisNumberSet_Create(); + pitEntry->refcount = 1; + + // add the message to the reverse path set + metisNumberSet_Add(pitEntry->ingressIdSet, metisMessage_GetIngressConnectionId(message)); + + // hack in a 4-second timeout + pitEntry->expiryTime = expiryTime; + pitEntry->fibEntry = NULL; + + pitEntry->creationTime = creationTime; + return pitEntry; +} + +void +metisPitEntry_Release(MetisPitEntry **pitEntryPtr) +{ + assertNotNull(pitEntryPtr, "Parameter must be non-null double pointer"); + assertNotNull(*pitEntryPtr, "Parameter must dereference to non-null pointer"); + + MetisPitEntry *pitEntry = *pitEntryPtr; + trapIllegalValueIf(pitEntry->refcount == 0, "Illegal state: has refcount of 0"); + + pitEntry->refcount--; + if (pitEntry->refcount == 0) { + if(pitEntry->fibEntry != NULL){ + metisFibEntry_Release(&pitEntry->fibEntry); + } + metisNumberSet_Release(&pitEntry->ingressIdSet); + metisNumberSet_Release(&pitEntry->egressIdSet); + metisMessage_Release(&pitEntry->message); + parcMemory_Deallocate((void **) &pitEntry); + } + *pitEntryPtr = NULL; +} + +MetisPitEntry * +metisPitEntry_Acquire(MetisPitEntry *original) +{ + assertNotNull(original, "Parameter original must be non-null"); + original->refcount++; + return original; +} + +void +metisPitEntry_AddIngressId(MetisPitEntry *pitEntry, unsigned ingressId) +{ + assertNotNull(pitEntry, "Parameter pitEntry must be non-null"); + metisNumberSet_Add(pitEntry->ingressIdSet, ingressId); +} + +void +metisPitEntry_AddEgressId(MetisPitEntry *pitEntry, unsigned egressId) +{ + assertNotNull(pitEntry, "Parameter pitEntry must be non-null"); + metisNumberSet_Add(pitEntry->egressIdSet, egressId); +} + +void +metisPitEntry_AddFibEntry(MetisPitEntry *pitEntry, MetisFibEntry *fibEntry) +{ + assertNotNull(pitEntry, "Parameter pitEntry must be non-null"); + assertNotNull(fibEntry, "Parameter fibEntry must be non-null"); + //the fibEntry should be always the same for all the interests in the same pitEntry + if(pitEntry->fibEntry == NULL){ + metisFibEntry_Acquire(fibEntry); + pitEntry->fibEntry = fibEntry; + } +} + +MetisFibEntry * +metisPitEntry_GetFibEntry(MetisPitEntry *pitEntry) +{ + assertNotNull(pitEntry, "Parameter pitEntry must be non-null"); + return pitEntry->fibEntry; +} + +MetisTicks +metisPitEntry_GetExpiryTime(const MetisPitEntry *pitEntry) +{ + assertNotNull(pitEntry, "Parameter pitEntry must be non-null"); + return pitEntry->expiryTime; +} + +MetisTicks +metisPitEntry_GetCreationTime(const MetisPitEntry *pitEntry) +{ + assertNotNull(pitEntry, "Parameter pitEntry must be non-null"); + return pitEntry->creationTime; +} + +void +metisPitEntry_SetExpiryTime(MetisPitEntry *pitEntry, MetisTicks expiryTime) +{ + assertNotNull(pitEntry, "Parameter pitEntry must be non-null"); + pitEntry->expiryTime = expiryTime; +} + + +const MetisNumberSet * +metisPitEntry_GetIngressSet(const MetisPitEntry *pitEntry) +{ + assertNotNull(pitEntry, "Parameter pitEntry must be non-null"); + return pitEntry->ingressIdSet; +} + +const MetisNumberSet * +metisPitEntry_GetEgressSet(const MetisPitEntry *pitEntry) +{ + assertNotNull(pitEntry, "Parameter pitEntry must be non-null"); + return pitEntry->egressIdSet; +} + +MetisMessage * +metisPitEntry_GetMessage(const MetisPitEntry *pitEntry) +{ + assertNotNull(pitEntry, "Parameter pitEntry must be non-null"); + return metisMessage_Acquire(pitEntry->message); +} |