From e86a8edd3c14fb41ace2a12efd17bc7772bf623f Mon Sep 17 00:00:00 2001 From: Florin Coras Date: Fri, 5 Jan 2018 03:20:25 -0800 Subject: api: refactor vlibmemory - separate client/server code for both memory and socket apis - separate memory api code from generic vlib api code - move unix_shared_memory_fifo to svm and rename to svm_fifo_t - overall declutter Change-Id: I90cdd98ff74d0787d58825b914b0f1eafcfa4dc2 Signed-off-by: Florin Coras --- src/svm/queue.h | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 src/svm/queue.h (limited to 'src/svm/queue.h') diff --git a/src/svm/queue.h b/src/svm/queue.h new file mode 100644 index 00000000000..dc1fc36e002 --- /dev/null +++ b/src/svm/queue.h @@ -0,0 +1,68 @@ +/* + *------------------------------------------------------------------ + * svm_queue.h - shared-memory queues + * + * Copyright (c) 2009 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. + *------------------------------------------------------------------ + */ + +#ifndef included_svm_queue_h +#define included_svm_queue_h + +#include + +typedef struct _svm_queue +{ + pthread_mutex_t mutex; /* 8 bytes */ + pthread_cond_t condvar; /* 8 bytes */ + int head; + int tail; + volatile int cursize; + int maxsize; + int elsize; + int consumer_pid; + int signal_when_queue_non_empty; + char data[0]; +} svm_queue_t; + +svm_queue_t *svm_queue_init (int nels, + int elsize, + int consumer_pid, + int signal_when_queue_non_empty); +void svm_queue_free (svm_queue_t * q); +int svm_queue_add (svm_queue_t * q, u8 * elem, int nowait); +int svm_queue_add2 (svm_queue_t * q, u8 * elem, u8 * elem2, int nowait); +int svm_queue_sub (svm_queue_t * q, u8 * elem, int nowait); +int svm_queue_sub2 (svm_queue_t * q, u8 * elem); +void svm_queue_lock (svm_queue_t * q); +void svm_queue_unlock (svm_queue_t * q); +int svm_queue_is_full (svm_queue_t * q); +int svm_queue_add_nolock (svm_queue_t * q, u8 * elem); +int svm_queue_sub_raw (svm_queue_t * q, u8 * elem); +int svm_queue_add_raw (svm_queue_t * q, u8 * elem); + +/* + * DEPRECATED please use svm_queue_t instead + */ +typedef svm_queue_t unix_shared_memory_queue_t; + +#endif /* included_svm_queue_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ -- cgit 1.2.3-korg