From 3931f83205f153f2bc7fc36d1a894cdc3f14b4db Mon Sep 17 00:00:00 2001
From: lichao <lichao@aiotlink.com>
Date: 星期三, 21 四月 2021 16:52:51 +0800
Subject: [PATCH] change node socket to vector; try lock free queue.
---
src/socket.cpp | 82 ++++++++++++++++++++++------------------
1 files changed, 45 insertions(+), 37 deletions(-)
diff --git a/src/socket.cpp b/src/socket.cpp
index 2c55665..c664982 100644
--- a/src/socket.cpp
+++ b/src/socket.cpp
@@ -24,47 +24,56 @@
using namespace bhome_msg;
using namespace bhome_shm;
-namespace
-{
-
-} // namespace
-
ShmSocket::ShmSocket(Shm &shm, const MQId &id, const int len) :
- shm_(shm), run_(false), mq_(id, shm, len)
+ run_(false), mq_(id, shm, len)
{
+ Start();
}
ShmSocket::ShmSocket(bhome_shm::SharedMemory &shm, const int len) :
- shm_(shm), run_(false), mq_(shm, len) {}
+ run_(false), mq_(shm, len)
+{
+ Start();
+}
ShmSocket::~ShmSocket()
{
- Stop(); //TODO should stop in sub class, incase thread access sub class data.
+ Stop();
}
bool ShmSocket::Start(int nworker, const RecvCB &onData, const IdleCB &onIdle)
{
- auto onRecvWithPerMsgCB = [this, onData](ShmSocket &socket, MsgI &imsg, BHMsgHead &head) {
- RecvCB cb;
- if (per_msg_cbs_->Find(head.msg_id(), cb)) {
- cb(socket, imsg, head);
- } else if (onData) {
- onData(socket, imsg, head);
- } else { // else ignored, or dropped
- }
- };
+ auto ioProc = [this, onData, onIdle]() {
+ auto DoSend = [this]() { return send_buffer_.TrySend(mq()); };
+ auto DoRecv = [=] {
+ auto onRecvWithPerMsgCB = [this, onData](ShmSocket &socket, MsgI &imsg, BHMsgHead &head) {
+ RecvCB cb;
+ if (per_msg_cbs_->Pick(head.msg_id(), cb)) {
+ cb(socket, imsg, head);
+ } else if (onData) {
+ onData(socket, imsg, head);
+ }
+ };
- auto recvLoopBody = [this, onRecvWithPerMsgCB, onIdle]() {
- try {
- MsgI imsg;
- if (mq().Recv(imsg, 10)) {
+ // do not recv if no cb is set.
+ if (!onData && per_msg_cbs_->empty()) {
+ return false;
+ }
+ auto onMsg = [&](MsgI &imsg) {
DEFER1(imsg.Release(shm()));
BHMsgHead head;
if (imsg.ParseHead(head)) {
onRecvWithPerMsgCB(*this, imsg, head);
}
- }
- if (onIdle) {
- onIdle(*this);
+ };
+ return mq().TryRecvAll(onMsg) > 0; // this will recv all msgs.
+ };
+
+ try {
+ bool more_to_send = DoSend();
+ bool more_to_recv = DoRecv();
+ if (onIdle) { onIdle(*this); }
+ if (!more_to_send && !more_to_recv) {
+ std::this_thread::yield();
}
} catch (...) {
}
@@ -75,7 +84,7 @@
run_.store(true);
for (int i = 0; i < nworker; ++i) {
- workers_.emplace_back([this, recvLoopBody]() { while (run_) { recvLoopBody(); } });
+ workers_.emplace_back([this, ioProc]() { while (run_) { ioProc(); } });
}
return true;
}
@@ -100,18 +109,17 @@
return false;
}
-bool ShmSocket::SyncRecv(bhome_msg::MsgI &msg, bhome::msg::BHMsgHead &head, const int timeout_ms)
+//maybe reimplment, using async cbs?
+bool ShmSocket::SyncRecv(bhome_msg::MsgI &msg, bhome_msg::BHMsgHead &head, const int timeout_ms)
{
- std::lock_guard<std::mutex> lock(mutex_);
- auto Recv = [&]() {
- if (mq().Recv(msg, timeout_ms)) {
- if (msg.ParseHead(head)) {
- return true;
- } else {
- msg.Release(shm());
- }
+ // std::lock_guard<std::mutex> lock(mutex_); // seems no need to lock mutex_.
+ bool got = (timeout_ms == 0) ? mq().TryRecv(msg) : mq().Recv(msg, timeout_ms);
+ if (got) {
+ if (msg.ParseHead(head)) {
+ return true;
+ } else {
+ msg.Release(shm());
}
- return false;
- };
- return !RunningNoLock() && Recv();
+ }
+ return false;
}
--
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