/*
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* =====================================================================================
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*
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* Filename: msg.h
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*
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* Description:
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*
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* Version: 1.0
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* Created: 2021年03月24日 16时49分20秒
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* Revision: none
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* Compiler: gcc
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*
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* Author: Li Chao (),
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* Organization:
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*
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* =====================================================================================
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*/
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#ifndef MSG_5BILLZET
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#define MSG_5BILLZET
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#include <stdint.h>
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#include <boost/interprocess/offset_ptr.hpp>
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namespace bhome_shm {
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using namespace boost::interprocess;
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// safe to be stored in shared memory.
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// message format: header(meta) + body(data).
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enum MsgType {
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kMsgTypeNull = 0,
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kMsgTypeNormal = 1,
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kMsgTypeMaxValue
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};
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const uint32_t kMsgMetaTag = 0xf1e2d3c4;
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struct MsgMetaV1 {
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uint16_t self_size_ = sizeof(MsgMetaV1); // sizeof(*this)
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uint16_t type_ = kMsgTypeNormal; // msg type.
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uint32_t tag_ = kMsgMetaTag;
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uint32_t data_size_ = 0;
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unsigned char src_id_[16] = {0};
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// more fields add at end, must not change
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MsgMetaV1(){}
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bool Parse(const void *p);
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void Pack(void *p);
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};
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typedef offset_ptr<void> Msg;
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} // namespace bhome_shm
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#endif // end of include guard: MSG_5BILLZET
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