Async: add TargetedContinuation

This class enables us to consistently represent continuations
that are intended to be posted on a particular target handling
thread. It hols a sh_ptr to the caller so that the target thread
can re-enqueue the response on the caller after processing the
REQ/IND op.

commonLibs/livoxProto1/device.cpp

@@ -120,7 +120,7 @@ Device::~Device()
  * This class manages the overall device connection process including handshake and heartbeat setup
  */
 class Device::ConnectReq
-:	public AsynchronousContinuation<Device::connectReqCbFn>
+:	public smo::AsynchronousContinuation<Device::connectReqCbFn>
 {
 private:
 	Device& device;
@@ -128,7 +128,9 @@ private:
 
 public:
 	ConnectReq(Device& dev, Device::connectReqCbFn cb)
-	: AsynchronousContinuation(std::move(cb)), device(dev) {}
+	:	smo::AsynchronousContinuation<Device::connectReqCbFn>(
+			std::move(cb)), device(dev)
+	{}
 
 	/**		FIXME:
 	 * WE need to assign the ipAddr to the Device being connected up.
@@ -259,7 +261,7 @@ void Device::connectReq(Device::connectReqCbFn callback)
 }
 
 class Device::ConnectToKnownDeviceReq
-:	public AsynchronousContinuation<Device::connectToKnownDeviceReqCbFn>
+:	public smo::AsynchronousContinuation<Device::connectToKnownDeviceReqCbFn>
 {
 public:
 	Device& device;
@@ -267,7 +269,8 @@ public:
 	std::shared_ptr<livoxProto1::comms::DiscoveredDevice> deviceInfo;
 
 	ConnectToKnownDeviceReq(Device& dev, Device::connectToKnownDeviceReqCbFn cb)
-	: AsynchronousContinuation(std::move(cb)), device(dev)
+	:	smo::AsynchronousContinuation<Device::connectToKnownDeviceReqCbFn>(
+			std::move(cb)), device(dev)
 	{}
 
 	// Public accessor for the original callback
@@ -360,7 +363,8 @@ void Device::connectToKnownDeviceReq(
 }
 
 class Device::ConnectByDeviceIdentifierReq
-:	public AsynchronousContinuation<Device::connectByDeviceIdentifierReqCbFn>
+:	public smo::AsynchronousContinuation<
+		Device::connectByDeviceIdentifierReqCbFn>
 {
 public:
 	Device& device;
@@ -368,7 +372,8 @@ public:
 
 	ConnectByDeviceIdentifierReq(
 		Device& dev, Device::connectByDeviceIdentifierReqCbFn cb)
-	: AsynchronousContinuation(std::move(cb)), device(dev)
+	:	smo::AsynchronousContinuation<Device::connectByDeviceIdentifierReqCbFn>(
+			std::move(cb)), device(dev)
 	{}
 
 	// Public accessor for the original callback
@@ -440,7 +445,7 @@ void Device::connectByDeviceIdentifierReq(
 }
 
 class Device::ExecuteHandshakeReq
-:	public AsynchronousContinuation<Device::executeHandshakeReqCbFn>
+:	public smo::AsynchronousContinuation<Device::executeHandshakeReqCbFn>
 {
 public:
 	friend void Device::executeHandshakeReq(
@@ -477,7 +482,8 @@ public:
 	ExecuteHandshakeReq(
 		Device& dev, const std::string& deviceIP,
 		Device::executeHandshakeReqCbFn cb)
-	:	AsynchronousContinuation(std::move(cb)),
+	:	smo::AsynchronousContinuation<Device::executeHandshakeReqCbFn>(
+			std::move(cb)),
 	device(dev), deviceIP(deviceIP),
 	handshakeFdDesc(device.componentThread->getIoService()),
 	timeoutTimer(device.componentThread->getIoService())