2 *------------------------------------------------------------------
3 * svm_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_svm_queue_h
21 #define included_svm_queue_h
25 typedef struct _svm_queue
27 pthread_mutex_t mutex; /* 8 bytes */
28 pthread_cond_t condvar; /* 8 bytes */
35 int signal_when_queue_non_empty;
52 * blocking call, return on signal or time-out
55 } svm_q_conditional_wait_t;
57 svm_queue_t *svm_queue_init (int nels,
60 int signal_when_queue_non_empty);
61 void svm_queue_free (svm_queue_t * q);
62 int svm_queue_add (svm_queue_t * q, u8 * elem, int nowait);
63 int svm_queue_add2 (svm_queue_t * q, u8 * elem, u8 * elem2, int nowait);
64 int svm_queue_sub (svm_queue_t * q, u8 * elem, svm_q_conditional_wait_t cond,
66 int svm_queue_sub2 (svm_queue_t * q, u8 * elem);
67 void svm_queue_lock (svm_queue_t * q);
68 void svm_queue_unlock (svm_queue_t * q);
69 int svm_queue_is_full (svm_queue_t * q);
70 int svm_queue_add_nolock (svm_queue_t * q, u8 * elem);
71 int svm_queue_sub_raw (svm_queue_t * q, u8 * elem);
72 int svm_queue_add_raw (svm_queue_t * q, u8 * elem);
75 * DEPRECATED please use svm_queue_t instead
77 typedef svm_queue_t unix_shared_memory_queue_t;
79 #endif /* included_svm_queue_h */
82 * fd.io coding-style-patch-verification: ON
85 * eval: (c-set-style "gnu")