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      1 /*
      2 Copyright (c) 2013-2016, The Linux Foundation. All rights reserved.
      3 
      4 Redistribution and use in source and binary forms, with or without
      5 modification, are permitted provided that the following conditions are
      6 met:
      7 		* Redistributions of source code must retain the above copyright
      8 			notice, this list of conditions and the following disclaimer.
      9 		* Redistributions in binary form must reproduce the above
     10 			copyright notice, this list of conditions and the following
     11 			disclaimer in the documentation and/or other materials provided
     12 			with the distribution.
     13 		* Neither the name of The Linux Foundation nor the names of its
     14 			contributors may be used to endorse or promote products derived
     15 			from this software without specific prior written permission.
     16 
     17 THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
     18 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     19 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
     20 ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
     21 BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     22 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     23 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
     24 BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     25 WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
     26 OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
     27 IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28 */
     29 /*!
     30 	@file
     31 	IPACM_CmdQueue.h
     32 
     33 	@brief
     34 	This file implements the IPAM Comment Queue definitions
     35 
     36 	@Author
     37 
     38 */
     39 #ifndef IPA_CONNTRACK_MESSAGE_H
     40 #define IPA_CONNTRACK_MESSAGE_H
     41 
     42 #include <pthread.h>
     43 #include "IPACM_Defs.h"
     44 
     45 
     46 
     47 /*---------------------------------------------------------------------------
     48 	 Event data required by IPA_CM
     49 ---------------------------------------------------------------------------*/
     50 
     51 
     52 typedef struct _ipacm_cmd_q_data {
     53 	ipa_cm_event_id event;
     54 	void *evt_data;
     55 }ipacm_cmd_q_data;
     56 
     57 typedef struct cmd_s
     58 {
     59 	void (*callback_ptr)(ipacm_cmd_q_data *);
     60 	ipacm_cmd_q_data data;
     61 }cmd_t;
     62 
     63 class Message
     64 {
     65 private:
     66 	Message *m_next;
     67 
     68 public:
     69 	cmd_t evt;
     70 
     71 	Message()
     72 	{
     73 		m_next = NULL;
     74 		evt.callback_ptr = NULL;
     75 	}
     76 	~Message() { }
     77 	void setnext(Message *item) { m_next = item; }
     78 	Message* getnext()       { return m_next; }
     79 };
     80 
     81 class MessageQueue
     82 {
     83 
     84 private:
     85 	Message *Head;
     86 	Message *Tail;
     87 	Message* dequeue(void);
     88 	static MessageQueue *inst_internal;
     89 	static MessageQueue *inst_external;
     90 
     91 	MessageQueue()
     92 	{
     93 		Head = NULL;
     94 		Tail = NULL;
     95 	}
     96 
     97 public:
     98 
     99 	~MessageQueue() { }
    100 	void enqueue(Message *item);
    101 
    102 	static void* Process(void *);
    103 	static MessageQueue* getInstanceInternal();
    104 	static MessageQueue* getInstanceExternal();
    105 
    106 };
    107 
    108 #endif  /* IPA_CONNTRACK_MESSAGE_H */
    109 
    110