2 *------------------------------------------------------------------
3 * unix_shared_memory_queue.h - shared-memory queues
5 * Copyright (c) 2009 Cisco and/or its affiliates.
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at:
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 *------------------------------------------------------------------
20 #ifndef included_unix_shared_memory_queue_h
21 #define included_unix_shared_memory_queue_h
24 #include <vppinfra/mem.h>
26 typedef struct _unix_shared_memory_queue
28 pthread_mutex_t mutex; /* 8 bytes */
29 pthread_cond_t condvar; /* 8 bytes */
36 int signal_when_queue_non_empty;
38 } unix_shared_memory_queue_t;
40 unix_shared_memory_queue_t *unix_shared_memory_queue_init (int nels,
44 signal_when_queue_non_empty);
45 void unix_shared_memory_queue_free (unix_shared_memory_queue_t * q);
46 int unix_shared_memory_queue_add (unix_shared_memory_queue_t * q,
47 u8 * elem, int nowait);
48 int unix_shared_memory_queue_sub (unix_shared_memory_queue_t * q,
49 u8 * elem, int nowait);
50 void unix_shared_memory_queue_lock (unix_shared_memory_queue_t * q);
51 void unix_shared_memory_queue_unlock (unix_shared_memory_queue_t * q);
52 int unix_shared_memory_queue_is_full (unix_shared_memory_queue_t * q);
53 int unix_shared_memory_queue_add_nolock (unix_shared_memory_queue_t * q,
56 int unix_shared_memory_queue_sub_raw (unix_shared_memory_queue_t * q,
58 int unix_shared_memory_queue_add_raw (unix_shared_memory_queue_t * q,
61 #endif /* included_unix_shared_memory_queue_h */
64 * fd.io coding-style-patch-verification: ON
67 * eval: (c-set-style "gnu")