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
25 typedef struct _unix_shared_memory_queue
27 pthread_mutex_t mutex; /* 8 bytes */
28 pthread_cond_t condvar; /* 8 bytes */
35 int signal_when_queue_non_empty;
37 } unix_shared_memory_queue_t;
39 unix_shared_memory_queue_t *unix_shared_memory_queue_init (int nels,
43 signal_when_queue_non_empty);
44 void unix_shared_memory_queue_free (unix_shared_memory_queue_t * q);
45 int unix_shared_memory_queue_add (unix_shared_memory_queue_t * q, u8 * elem,
47 int unix_shared_memory_queue_add2 (unix_shared_memory_queue_t * q, u8 * elem,
48 u8 * elem2, int nowait);
49 int unix_shared_memory_queue_sub (unix_shared_memory_queue_t * q, u8 * elem,
51 void unix_shared_memory_queue_lock (unix_shared_memory_queue_t * q);
52 void unix_shared_memory_queue_unlock (unix_shared_memory_queue_t * q);
53 int unix_shared_memory_queue_is_full (unix_shared_memory_queue_t * q);
54 int unix_shared_memory_queue_add_nolock (unix_shared_memory_queue_t * q,
57 int unix_shared_memory_queue_sub_raw (unix_shared_memory_queue_t * q,
59 int unix_shared_memory_queue_add_raw (unix_shared_memory_queue_t * q,
62 #endif /* included_unix_shared_memory_queue_h */
65 * fd.io coding-style-patch-verification: ON
68 * eval: (c-set-style "gnu")