From 77a6c3512a44dfe6540dde71946e6484fe4f173f Mon Sep 17 00:00:00 2001
From: lichao <lichao@aiotlink.com>
Date: 星期一, 10 五月 2021 16:05:28 +0800
Subject: [PATCH] test lock code.
---
src/socket.h | 186 ++++++++++++++++++++++++++++++++++++---------
1 files changed, 147 insertions(+), 39 deletions(-)
diff --git a/src/socket.h b/src/socket.h
index e65ac83..981677f 100644
--- a/src/socket.h
+++ b/src/socket.h
@@ -19,56 +19,164 @@
#ifndef SOCKET_GWTJHBPO
#define SOCKET_GWTJHBPO
-#include "shm_queue.h"
-#include <vector>
-#include <thread>
-#include <memory>
-#include <functional>
-#include <mutex>
-#include <condition_variable>
+#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>
-class ShmSocket
+using namespace bhome_msg;
+class ShmSocket : private boost::noncopyable
{
- typedef bhome_shm::ShmMsgQueue Queue;
+
+protected:
+ typedef ShmMsgQueue Queue;
+
public:
- enum Type {
- eSockRequest,
- eSockReply,
- eSockSubscribe,
- eSockPublish,
- };
- typedef std::function<void (bhome_msg::BHMsg &msg)> RecvCB;
+ typedef ShmMsgQueue::MQId MQId;
+ typedef bhome_shm::SharedMemory Shm;
+ typedef std::function<void(ShmSocket &sock, MsgI &imsg)> 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(Type type);
- ShmSocket(Type type, bhome_shm::SharedMemory &shm);
- ~ShmSocket();
+ 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(Shm &shm, const int len = 12);
+ ~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(); }
+ // start recv.
+ bool Start(const RawRecvCB &onData, const IdleCB &onIdle, int nworker = 1);
+ bool Start(int nworker = 1, const RecvCB &onData = RecvCB(), const IdleCB &onIdle = IdleCB());
+ bool Start(const RecvCB &onData, const IdleCB &onIdle, int nworker = 1) { return Start(nworker, onData, onIdle); }
+ bool Start(const RecvCB &onData, int nworker = 1) { return Start(nworker, onData); }
+ bool Stop();
- // bool Request(const std::string &topic, const void *data, const size_t size, onReply);
- bool RequestAndWait() { return false; } // call Request, and wait onReply notify cv
+ template <class Body>
+ bool Send(const MQId remote, BHMsgHead &head, Body &body, RecvCB &&cb = RecvCB())
+ {
+ try {
+ if (!cb) {
+ return SendImpl(remote, MsgI::Serialize(head, body));
+ } else {
+ std::string msg_id(head.msg_id());
+ per_msg_cbs_->Store(msg_id, std::move(cb));
+ auto onExpireRemoveCB = [this, msg_id](SendQ::Data const &msg) {
+ RecvCB cb_no_use;
+ per_msg_cbs_->Pick(msg_id, cb_no_use);
+ };
+ return SendImpl(remote, MsgI::Serialize(head, body), onExpireRemoveCB);
+ }
+ } catch (...) {
+ SetLastError(eError, "Send internal error.");
+ return false;
+ }
+ }
- // bool HandleRequest(onData);
- bool ReadRequest(); // exclude with HandleRequest
- bool SendReply(); // exclude with HandleRequest
+ bool Send(const MQId remote, const MsgI &imsg)
+ {
+ return SendImpl(remote, imsg);
+ }
- bool Publish(const std::string &topic, const void *data, const size_t size, const int timeout_ms);
- bool Subscribe(const std::vector<std::string> &topics, const int timeout_ms);
- bool RecvSub(std::string &topic, std::string &data, const int timeout_ms);
- bool SetRecvCallback(const RecvCB &onRecv);
+ bool SyncRecv(MsgI &msg, bhome_msg::BHMsgHead &head, const int timeout_ms);
+
+ template <class Body>
+ bool SendAndRecv(const MQId 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:
+ Queue &mq() { return mq_; } // programmer should make sure that mq_ is valid.
+ const Queue &mq() const { return mq_; }
+ std::mutex &mutex() { return mutex_; }
+
private:
- bool HasRecvCB();
- void Stop();
+ bool StopNoLock();
+ bool RunningNoLock() { return !workers_.empty(); }
- bhome_shm::SharedMemory &shm_;
- Type type_;
- std::vector<std::thread> workers_;
- std::mutex mutex_;
- std::condition_variable cv_recv_cb_;
- std::atomic<bool> run_;
- RecvCB onRecv_;
+ template <class... Rest>
+ bool SendImpl(const MQId remote, Rest &&...rest)
+ {
+ // TODO send alloc request, and pack later, higher bit means alloc?
+ send_buffer_.Append(remote, std::forward<decltype(rest)>(rest)...);
+ return true;
+ }
- std::unique_ptr<Queue> mq_;
+ std::vector<std::thread> workers_;
+ std::mutex mutex_;
+ std::atomic<bool> run_;
+
+ Queue mq_;
+ template <class Key>
+ class CallbackRecords
+ {
+ std::unordered_map<Key, RecvCB> store_;
+
+ public:
+ bool empty() const { return store_.empty(); }
+ bool Store(const Key &id, RecvCB &&cb) { return store_.emplace(id, std::move(cb)).second; }
+ bool Pick(const Key &id, RecvCB &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>> per_msg_cbs_;
+
+ SendQ send_buffer_;
};
-
#endif // end of include guard: SOCKET_GWTJHBPO
--
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