From f51636c193d032723c47343e39ff8296db350200 Mon Sep 17 00:00:00 2001
From: lichao <lichao@aiotlink.com>
Date: 星期一, 29 三月 2021 18:04:00 +0800
Subject: [PATCH] change msg to use protobuf, add more msg type.
---
src/msg.h | 46 +++++++++++++++++++---------------------------
1 files changed, 19 insertions(+), 27 deletions(-)
diff --git a/src/msg.h b/src/msg.h
index 99fb2e2..5cb0ce4 100644
--- a/src/msg.h
+++ b/src/msg.h
@@ -26,32 +26,12 @@
namespace bhome_msg {
using namespace bhome_shm;
- using namespace bhome::msg; // for serialized data in Msg
+ using namespace bhome::msg; // for serialized data in MsgI
-// msg is safe to be stored in shared memory, so POD data or offset_ptr is required.
+// MsgI is safe to be stored in shared memory, so POD data or offset_ptr is required.
// message format: header(meta) + body(data).
-enum MsgType {
- kMsgTypeNull = 0,
- kMsgTypeNormal = 1,
- kMsgTypeMaxValue
-};
typedef boost::uuids::uuid MQId;
-
-const uint32_t kMsgMetaTag = 0xf1e2d3c4;
-
-struct MsgMetaV1 {
- uint16_t self_size_ = sizeof(MsgMetaV1); // sizeof(*this)
- uint16_t type_ = kMsgTypeNormal; // msg type.
- uint32_t tag_ = kMsgMetaTag;
- uint32_t data_size_ = 0;
- MQId src_id_;
- // more fields add at end, must not change
-
- MsgMetaV1():src_id_(boost::uuids::nil_uuid()){}
- bool Parse(const void *p);
- void Pack(void *p);
-};
// store ref count, msgs shareing the same data should also hold a pointer of the same RefCount object.
class RefCount : private boost::noncopyable
@@ -65,13 +45,21 @@
int num_ = 1;
};
-class Msg {
+BHMsg MakeRequest(const MQId &src_id, const void *data, const size_t size);
+BHMsg MakeReply(const void *data, const size_t size);
+BHMsg MakeSub(const std::vector<std::string> &topics);
+BHMsg MakeUnsub(const std::vector<std::string> &topics);
+BHMsg MakePub(const std::string &topic, const void *data, const size_t size);
+
+class MsgI {
private:
offset_ptr<void> ptr_;
offset_ptr<RefCount> count_;
+
+ bool BuildSubOrUnsub(SharedMemory &shm, const std::vector<std::string> &topics, const MsgType sub_unsub);
public:
- Msg(void *p=0, RefCount *c=0):ptr_(p), count_(c) {}
- void swap(Msg &a) { std::swap(ptr_, a.ptr_); std::swap(count_, a.count_); }
+ MsgI(void *p=0, RefCount *c=0):ptr_(p), count_(c) {}
+ void swap(MsgI &a) { std::swap(ptr_, a.ptr_); std::swap(count_, a.count_); }
template <class T = void> T *get() { return static_cast<T*>(ptr_.get()); }
// AddRef and Release works for both counted and not counted msg.
@@ -79,11 +67,15 @@
int Release(SharedMemory &shm);
int Count() const{ return IsCounted() ? count_->Get() : 1; }
+
bool IsCounted() const { return static_cast<bool>(count_); }
- bool Build(SharedMemory &shm, const MQId &src_id, const void *p, const size_t size, const bool refcount);
+
+ bool Make(SharedMemory &shm, const BHMsg &msg);
+ bool MakeRC(SharedMemory &shm, const BHMsg &msg);
+ bool Unpack(BHMsg &msg) const;
};
-inline void swap(Msg &m1, Msg &m2) { m1.swap(m2); }
+inline void swap(MsgI &m1, MsgI &m2) { m1.swap(m2); }
} // namespace bhome_msg
--
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