94 lines
1.6 KiB
C++
94 lines
1.6 KiB
C++
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//
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// Example EPICS CA server
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//
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#include <exServer.h>
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//
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// exAsyncPV::maxSimultAsyncOps()
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// (virtual replacement for the default)
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//
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unsigned exAsyncPV::maxSimultAsyncOps () const
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{
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return 500u;
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}
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//
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// exAsyncPV::read()
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// (virtual replacement for the default)
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//
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caStatus exAsyncPV::read (const casCtx &ctx, gdd &valueIn)
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{
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exAsyncIO *pIO;
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pIO = new exAsyncReadIO(ctx, *this, valueIn);
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if (!pIO) {
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return S_casApp_noMemory;
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}
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return S_casApp_asyncCompletion;
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}
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//
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// exAsyncPV::write()
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// (virtual replacement for the default)
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//
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caStatus exAsyncPV::write (const casCtx &ctx, gdd &valueIn)
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{
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exAsyncIO *pIO;
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pIO = new exAsyncWriteIO(ctx, *this, valueIn);
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if (!pIO) {
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return S_casApp_noMemory;
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}
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return S_casApp_asyncCompletion;
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}
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//
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// exAsyncWriteIO::expire()
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// (a virtual function that runs when the base timer expires)
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//
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void exAsyncWriteIO::expire()
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{
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caStatus status;
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status = this->pv.update(*this->getValuePtr());
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this->clrValue();
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this->postIOCompletion (status);
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}
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//
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// exAsyncReadIO::expire()
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// (a virtual function that runs when the base timer expires)
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//
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void exAsyncReadIO::expire()
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{
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caStatus status;
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gdd *pValue = this->getValuePtr();
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//
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// map between the prototype in and the
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// current value
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//
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status = exServer::read(this->pv, *pValue);
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//
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// post IO completion
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//
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this->postIOCompletion(status);
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}
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//
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// exAsyncExistIO::expire()
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// (a virtual function that runs when the base timer expires)
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//
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void exAsyncExistIO::expire()
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{
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//
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// post IO completion
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//
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this->postIOCompletion(S_cas_success);
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}
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