From 34cd75f77d0ca94dbdba4e6cc9451fe4d33e78b3 Mon Sep 17 00:00:00 2001
From: lichao <lichao@aiotlink.com>
Date: 星期三, 19 五月 2021 19:14:13 +0800
Subject: [PATCH] add api BHQueryProcs.

---
 src/socket.h |  164 ++++++++++++++++++++++++++++++++++++++++++++++++------
 1 files changed, 145 insertions(+), 19 deletions(-)

diff --git a/src/socket.h b/src/socket.h
index 20da7c0..7557034 100644
--- a/src/socket.h
+++ b/src/socket.h
@@ -19,55 +19,181 @@
 #ifndef SOCKET_GWTJHBPO
 #define SOCKET_GWTJHBPO
 
-#include "shm_queue.h"
+#include "bh_util.h"
+#include "defs.h"
+#include "sendq.h"
+#include "shm_msg_queue.h"
 #include <atomic>
 #include <boost/noncopyable.hpp>
+#include <condition_variable>
 #include <functional>
 #include <memory>
 #include <mutex>
 #include <thread>
 #include <vector>
 
+using namespace bhome_msg;
 class ShmSocket : private boost::noncopyable
 {
+
 protected:
-	typedef bhome_shm::ShmMsgQueue Queue;
+	typedef ShmMsgQueue Queue;
 
 public:
+	typedef ShmMsgQueue::MQId MQId;
 	typedef bhome_shm::SharedMemory Shm;
-	typedef std::function<void(bhome_msg::BHMsg &msg)> RecvCB;
-	typedef std::function<void(bhome_msg::MsgI &imsg)> RecvRawCB;
+	typedef std::function<void(ShmSocket &sock, Queue::RawData &val)> RawRecvCB;
+	typedef std::function<void(ShmSocket &sock, MsgI &imsg, BHMsgHead &head)> RecvCB;
+	typedef std::function<bool(ShmSocket &sock, MsgI &imsg, BHMsgHead &head)> PartialRecvCB;
+	typedef std::function<void(ShmSocket &sock)> IdleCB;
 
-	ShmSocket(Shm &shm, const int len = 12);
+	ShmSocket(Shm &shm, const MQId id, const int len);
+	ShmSocket(Shm &shm, const bool create_or_else_find, const MQId id, const int len);
+	ShmSocket(int64_t offset, Shm &shm, const MQId id);
 	~ShmSocket();
-
+	static bool Remove(SharedMemory &shm, const MQId id) { return Queue::Remove(shm, id); }
+	bool Remove() { return Remove(shm(), id()); }
+	MQId id() const { return mq().Id(); }
+	int64_t AbsAddr() const { return mq().AbsAddr(); }
+	void SetNodeProc(const int proc_index, const int socket_index)
+	{
+		node_proc_index_ = proc_index;
+		socket_index_ = socket_index;
+	}
 	// start recv.
-	bool Start(const RecvCB &onData, int nworker = 1);
-	bool StartRaw(const RecvRawCB &onData, int nworker = 1);
+	bool Start(int nworker = 1, const RecvCB &onMsg = RecvCB(), const RawRecvCB &onRaw = RawRecvCB(), const IdleCB &onIdle = IdleCB());
+	bool Start(const RecvCB &onData, const IdleCB &onIdle, int nworker = 1) { return Start(nworker, onData, RawRecvCB(), onIdle); }
+	bool Start(const RecvCB &onData, int nworker = 1) { return Start(nworker, onData); }
 	bool Stop();
-	size_t Pending() const { return mq_ ? mq_->Pending() : 0; }
+
+	template <class Body>
+	bool CenterSend(const MQInfo &remote, BHMsgHead &head, Body &body)
+	{
+		try {
+			//TODO alloc outsiez and use send.
+			MsgI msg;
+			if (!msg.Make(head, body)) { return false; }
+			DEFER1(msg.Release());
+
+			return Send(remote, msg);
+		} catch (...) {
+			SetLastError(eError, "Send internal error.");
+			return false;
+		}
+	}
+
+	bool RequestAlloc(const int64_t size, std::function<void(MsgI &msg)> const &onResult);
+
+	template <class Body>
+	bool Send(const MQInfo &remote, BHMsgHead &head, Body &body, RecvCB &&cb = RecvCB())
+	{
+		return Send(remote, MsgI::Serialize(head, body), head.msg_id(), std::move(cb));
+	}
+	template <class... T>
+	bool Send(const MQInfo &remote, const MsgI &imsg, T &&...t)
+	{
+		return SendImpl(remote, imsg, std::forward<decltype(t)>(t)...);
+	}
+	template <class... T>
+	bool Send(const MQInfo &remote, const int64_t cmd, T &&...t)
+	{
+		return SendImpl(remote, cmd, std::forward<decltype(t)>(t)...);
+	}
+
+	template <class Body>
+	bool SendAndRecv(const MQInfo &remote, BHMsgHead &head, Body &body, MsgI &reply, BHMsgHead &reply_head, const int timeout_ms)
+	{
+		struct State {
+			std::mutex mutex;
+			std::condition_variable cv;
+			bool canceled = false;
+		};
+
+		try {
+			std::shared_ptr<State> st(new State);
+
+			auto endtime = std::chrono::steady_clock::now() + std::chrono::milliseconds(timeout_ms);
+
+			auto OnRecv = [st, &reply, &reply_head](ShmSocket &sock, MsgI &msg, BHMsgHead &head) {
+				std::unique_lock<std::mutex> lk(st->mutex);
+				if (!st->canceled) {
+					reply.swap(msg);
+					reply_head.Swap(&head);
+					st->cv.notify_one();
+				} else { // ignore
+				}
+			};
+
+			std::unique_lock<std::mutex> lk(st->mutex);
+			bool sendok = Send(remote, head, body, std::move(OnRecv));
+			if (!sendok) {
+				LOG_DEBUG() << "send timeout";
+			}
+			if (sendok && st->cv.wait_until(lk, endtime) == std::cv_status::no_timeout) {
+				return true;
+			} else {
+				st->canceled = true;
+				SetLastError(ETIMEDOUT, "timeout");
+				return false;
+			}
+		} catch (...) {
+			return false;
+		}
+	}
+
+	Shm &shm() const { return mq().shm(); }
 
 protected:
-	ShmSocket(Shm &shm, const void *id, const int len);
-	Shm &shm() { return shm_; }
-	const Shm &shm() const { return shm_; }
-	Queue &mq() { return *mq_; } // programmer should make sure that mq_ is valid.
-	const Queue &mq() const { return *mq_; }
+	Queue &mq() { return mq_; } // programmer should make sure that mq_ is valid.
+	const Queue &mq() const { return mq_; }
 	std::mutex &mutex() { return mutex_; }
-
-	bool SyncSend(const void *id, const bhome_msg::BHMsg &msg, const int timeout_ms);
-	bool SyncRecv(bhome_msg::BHMsg &msg, const int timeout_ms);
 
 private:
 	bool StopNoLock();
 	bool RunningNoLock() { return !workers_.empty(); }
 
-	Shm &shm_;
+	bool Send(const MQInfo &remote, std::string &&content, const std::string &msg_id, RecvCB &&cb = RecvCB());
+
+	template <class... Rest>
+	bool SendImpl(const MQInfo &remote, Rest &&...rest)
+	{
+		return send_buffer_.Append(remote, std::forward<decltype(rest)>(rest)...);
+	}
+
 	std::vector<std::thread> workers_;
 	std::mutex mutex_;
 	std::atomic<bool> run_;
 
-	std::unique_ptr<Queue> mq_;
+	Queue mq_;
+	template <class Key, class CB>
+	class CallbackRecords
+	{
+		std::unordered_map<Key, CB> store_;
+
+	public:
+		bool empty() const { return store_.empty(); }
+		bool Store(const Key &id, CB &&cb) { return store_.emplace(id, std::move(cb)).second; }
+		bool Pick(const Key &id, CB &cb)
+		{
+			auto pos = store_.find(id);
+			if (pos != store_.end()) {
+				cb.swap(pos->second);
+				store_.erase(pos);
+				return true;
+			} else {
+				return false;
+			}
+		}
+	};
+
+	Synced<CallbackRecords<std::string, RecvCB>> per_msg_cbs_;
+	Synced<CallbackRecords<int, RawRecvCB>> alloc_cbs_;
+	SendQ send_buffer_;
+
+	// node request center alloc memory.
+	int node_proc_index_ = -1;
+	int socket_index_ = -1;
+	std::atomic<int> alloc_id_;
 };
 
 #endif // end of include guard: SOCKET_GWTJHBPO

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