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      1 /* Copyright (c) 2011, The Linux Foundation. All rights reserved.
      2  *
      3  * Redistribution and use in source and binary forms, with or without
      4  * modification, are permitted provided that the following conditions are
      5  * met:
      6  *     * Redistributions of source code must retain the above copyright
      7  *       notice, this list of conditions and the following disclaimer.
      8  *     * Redistributions in binary form must reproduce the above
      9  *       copyright notice, this list of conditions and the following
     10  *       disclaimer in the documentation and/or other materials provided
     11  *       with the distribution.
     12  *     * Neither the name of The Linux Foundation nor the names of its
     13  *       contributors may be used to endorse or promote products derived
     14  *       from this software without specific prior written permission.
     15  *
     16  * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
     17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
     23  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     24  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
     25  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
     26  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  *
     28  */
     29 #ifndef __LOC_ENG_DMN_CONN_THREAD_HELPER_H__
     30 #define __LOC_ENG_DMN_CONN_THREAD_HELPER_H__
     31 
     32 #ifdef __cplusplus
     33 extern "C" {
     34 #endif /* __cplusplus */
     35 
     36 #include <pthread.h>
     37 
     38 struct loc_eng_dmn_conn_thelper {
     39     unsigned char   thread_exit;
     40     unsigned char   thread_ready;
     41     pthread_cond_t  thread_cond;
     42     pthread_mutex_t thread_mutex;
     43     pthread_t       thread_id;
     44     void *          thread_context;
     45     int             (*thread_proc_init) (void * context);
     46     int             (*thread_proc_pre)  (void * context);
     47     int             (*thread_proc)      (void * context);
     48     int             (*thread_proc_post) (void * context);
     49 };
     50 
     51 typedef pthread_t (* thelper_create_thread)(const char* name, void (*start)(void *), void* arg);
     52 int loc_eng_dmn_conn_launch_thelper(struct loc_eng_dmn_conn_thelper * thelper,
     53     int (*thread_proc_init) (void * context),
     54     int (*thread_proc_pre)  (void * context),
     55     int (*thread_proc)      (void * context),
     56     int (*thread_proc_post) (void * context),
     57     thelper_create_thread   create_thread_cb,
     58     void * context);
     59 
     60 int loc_eng_dmn_conn_unblock_thelper(struct loc_eng_dmn_conn_thelper * thelper);
     61 int loc_eng_dmn_conn_join_thelper(struct loc_eng_dmn_conn_thelper * thelper);
     62 
     63 /* if only need to use signal */
     64 int thelper_signal_init(struct loc_eng_dmn_conn_thelper * thelper);
     65 int thelper_signal_destroy(struct loc_eng_dmn_conn_thelper * thelper);
     66 int thelper_signal_wait(struct loc_eng_dmn_conn_thelper * thelper);
     67 int thelper_signal_ready(struct loc_eng_dmn_conn_thelper * thelper);
     68 int thelper_signal_block(struct loc_eng_dmn_conn_thelper * thelper);
     69 
     70 #ifdef __cplusplus
     71 }
     72 #endif /* __cplusplus */
     73 
     74 #endif /* __LOC_ENG_DMN_CONN_THREAD_HELPER_H__ */
     75