EPICS_base/pvAccess
0
0
Fork 0
Code Issues Pull Requests Projects Wiki Activity

getme example minor

Browse Source
This commit is contained in:
Michael Davidsaver
2017-06-20 18:19:53 +02:00
parent 9a9896042a
commit 67c07aa979
1 changed files with 10 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
examples/getme.cpp
View File

@ -70,6 +70,8 @@ struct ChanReq : public pva::ChannelRequester
struct GetReq : public pva::ChannelGetRequester
{
const std::string name;
GetReq(const std::string& name) :name(name) {}
virtual ~GetReq() {}
virtual std::string getRequesterName() { return "GetReq"; }
@ -81,18 +83,18 @@ struct GetReq : public pva::ChannelGetRequester
{
// Called each time get operation becomes "ready" (channel connected)
if(status.isSuccess()) {
std::cout<<"Get execute "<<channelGet->getChannel()->getChannelName()<<"\n";
std::cout<<"Get execute "<<name<<"\n";
// can now execute the get operation
channelGet->get();
} else {
std::cout<<"Oops GetConnect: "<<channelGet->getChannel()->getChannelName()<<" "<<status<<"\n";
std::cout<<"Oops GetConnect: "<<name<<" "<<status<<"\n";
}
}
virtual void channelDisconnect(bool destroy) {
// Called each time operation becomes no "ready" (channel disconnected)
// same as channelStateChange() for DISCONNECTED and DESTROYED
std::cout<<"Get disconnected\n";
std::cout<<name<<"Get disconnected\n";
}
virtual void getDone(
@ -106,9 +108,9 @@ struct GetReq : public pva::ChannelGetRequester
pvd::PVFieldPtr valfld(pvStructure->getSubField("value"));
if(!valfld)
valfld = pvStructure;
std::cout<<channelGet->getChannel()->getChannelName()<<" : "<<*valfld<<"\n";
std::cout<<name<<" : "<<*valfld<<"\n";
} else {
std::cout<<"Oops Get: "<<status<<"\n";
std::cout<<name<<"Oops Get: "<<status<<"\n";
}
}
};
@ -176,14 +178,15 @@ int main(int argc, char *argv[]) {
typedef std::set<pva::ChannelGet::shared_pointer> gets_t;
gets_t gets;
// as we have no channel or operation specific data,
// as we have no channel specific data,
// use the same requesters for all PVs
pva::ChannelRequester::shared_pointer chanreq(new ChanReq);
pva::ChannelGetRequester::shared_pointer getreq(new GetReq);
for(pvs_t::const_iterator it=pvs.begin(); it!=pvs.end(); ++it) {
const std::string& pv = *it;
pva::ChannelGetRequester::shared_pointer getreq(new GetReq(pv));
pva::Channel::shared_pointer chan(provider->createChannel(pv, chanreq));
// if !chan then channelCreated() called with error status
if(!chan) continue;