Raymond Knopp
51a9107c14
Conflicts: openair1/SCHED/phy_procedures_lte_eNb.c openair2/ENB_APP/enb_config.c openair2/LAYER2/MAC/eNB_scheduler_primitives.c openair2/LAYER2/MAC/eNB_scheduler_ulsch.c openair2/RRC/LITE/MESSAGES/asn1_msg.c targets/RT/USER/lte-ru.c
137 lines
3.8 KiB
C
Executable File
137 lines
3.8 KiB
C
Executable File
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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/*! \file ringbuffer_queue.c
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* \brief Lock-free ringbuffer used for async message passing of agent
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* \author Xenofon Foukas
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* \date March 2016
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* \version 1.0
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* \email: x.foukas@sms.ed.ac.uk
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* @ingroup _mac
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*/
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#include "ringbuffer_queue.h"
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#include "log.h"
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message_queue_t * new_message_queue(int size) {
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message_queue_t *ret = NULL;
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ret = calloc(1, sizeof(message_queue_t));
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if (ret == NULL)
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goto error;
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lfds700_misc_library_init_valid_on_current_logical_core();
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lfds700_misc_prng_init(&(ret->ps));
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ret->ringbuffer_array = malloc(sizeof(struct lfds700_ringbuffer_element) * size);
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lfds700_ringbuffer_init_valid_on_current_logical_core(&(ret->ringbuffer_state),
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ret->ringbuffer_array,
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size,
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&(ret->ps),
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NULL);
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return ret;
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error:
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LOG_E(MAC, "%s: an error occured\n", __FUNCTION__);
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if (ret != NULL) {
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free(ret->ringbuffer_array);
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memset(ret, 0, sizeof(message_queue_t));
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free(ret);
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}
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return NULL;
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}
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int message_put(message_queue_t *queue, void *data, int size, int priority) {
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struct lfds700_misc_prng_state ls;
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enum lfds700_misc_flag overwrite_occurred_flag;
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message_t *overwritten_msg;
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message_t *m = NULL;
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LFDS700_MISC_MAKE_VALID_ON_CURRENT_LOGICAL_CORE_INITS_COMPLETED_BEFORE_NOW_ON_ANY_OTHER_LOGICAL_CORE;
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lfds700_misc_prng_init(&ls);
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m = calloc(1, sizeof(message_t));
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if (m == NULL)
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goto error;
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m->data = data;
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m->size = size;
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m->priority = priority;
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lfds700_ringbuffer_write(&(queue->ringbuffer_state),
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NULL,
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(void *) m,
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&overwrite_occurred_flag,
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NULL,
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(void **) &overwritten_msg,
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&ls);
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if (overwrite_occurred_flag == LFDS700_MISC_FLAG_RAISED) {
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free(overwritten_msg->data);
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free(overwritten_msg);
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}
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return 0;
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error:
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free(m);
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LOG_E(MAC, "%s: an error occured\n", __FUNCTION__);
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return -1;
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}
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int message_get(message_queue_t *queue, void **data, int *size, int *priority) {
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message_t *m;
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struct lfds700_misc_prng_state ls;
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LFDS700_MISC_MAKE_VALID_ON_CURRENT_LOGICAL_CORE_INITS_COMPLETED_BEFORE_NOW_ON_ANY_OTHER_LOGICAL_CORE;
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lfds700_misc_prng_init(&ls);
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if (lfds700_ringbuffer_read(&(queue->ringbuffer_state), NULL, (void **) &m, &ls) == 0) {
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return -1;
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}
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*data = m->data;
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*size = m->size;
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*priority = m->priority;
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free(m);
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return 0;
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}
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message_queue_t destroy_message_queue(message_queue_t *queue) {
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struct lfds700_misc_prng_state ls;
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message_t *m;
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LFDS700_MISC_MAKE_VALID_ON_CURRENT_LOGICAL_CORE_INITS_COMPLETED_BEFORE_NOW_ON_ANY_OTHER_LOGICAL_CORE;
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lfds700_misc_prng_init(&ls);
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while (lfds700_ringbuffer_read(&(queue->ringbuffer_state), NULL, (void **) &m, &ls) != 0) {
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free(m->data);
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memset(m, 0, sizeof(message_t));
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free(m);
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}
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free(queue->ringbuffer_array);
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memset(queue, 0, sizeof(message_queue_t));
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free(queue);
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}
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