Add SharedPV

2018-05-29 21:35:34 -07:00
parent 146fbbc719
commit 74c2ec1ec3
14 changed files with 2050 additions and 0 deletions
--- a/src/server/sharedstateimpl.h
+++ b/src/server/sharedstateimpl.h
@@ -0,0 +1,149 @@
+/*
+ * Copyright information and license terms for this software can be
+ * found in the file LICENSE that is included with the distribution
+ */
+#ifndef SHAREDSTATEIMPL_H
+#define SHAREDSTATEIMPL_H
+
+#include "pva/sharedstate.h"
+#include <pv/pvAccess.h>
+#include <pv/reftrack.h>
+
+#define FOR_EACH(TYPE, IT, END, OBJ) for(TYPE IT((OBJ).begin()), END((OBJ).end()); IT != END; ++IT)
+
+namespace pvd = epics::pvData;
+namespace pva = epics::pvAccess;
+
+typedef epicsGuard<epicsMutex> Guard;
+typedef epicsGuardRelease<epicsMutex> UnGuard;
+
+namespace pvas {
+
+struct SharedChannel : public pva::Channel,
+                       public std::tr1::enable_shared_from_this<SharedChannel>
+{
+    static size_t num_instances;
+
+    const std::tr1::shared_ptr<SharedPV> owner;
+    const std::string channelName;
+    const requester_type::weak_pointer requester;
+    const pva::ChannelProvider::weak_pointer provider;
+
+    SharedChannel(const std::tr1::shared_ptr<SharedPV>& owner,
+                  const pva::ChannelProvider::shared_pointer provider,
+                  const std::string& channelName,
+                  const requester_type::shared_pointer& requester);
+    virtual ~SharedChannel();
+
+    virtual void destroy() OVERRIDE FINAL;
+
+    virtual std::tr1::shared_ptr<pva::ChannelProvider> getProvider() OVERRIDE FINAL;
+    virtual std::string getRemoteAddress() OVERRIDE FINAL;
+    virtual std::string getChannelName() OVERRIDE FINAL;
+    virtual std::tr1::shared_ptr<pva::ChannelRequester> getChannelRequester() OVERRIDE FINAL;
+
+    virtual void getField(pva::GetFieldRequester::shared_pointer const & requester,std::string const & subField) OVERRIDE FINAL;
+
+    virtual pva::ChannelPut::shared_pointer createChannelPut(
+            pva::ChannelPutRequester::shared_pointer const & requester,
+            pvd::PVStructure::shared_pointer const & pvRequest) OVERRIDE FINAL;
+
+    virtual pva::ChannelRPC::shared_pointer createChannelRPC(
+            pva::ChannelRPCRequester::shared_pointer const & requester,
+            pvd::PVStructure::shared_pointer const & pvRequest) OVERRIDE FINAL;
+
+    virtual pva::Monitor::shared_pointer createMonitor(
+            pva::MonitorRequester::shared_pointer const & requester,
+            pvd::PVStructure::shared_pointer const & pvRequest) OVERRIDE FINAL;
+};
+
+struct SharedMonitorFIFO : public pva::MonitorFIFO
+{
+    const std::tr1::shared_ptr<SharedChannel> channel;
+    SharedMonitorFIFO(const std::tr1::shared_ptr<SharedChannel>& channel,
+                      const requester_type::shared_pointer& requester,
+                      const pvd::PVStructure::const_shared_pointer &pvRequest);
+    virtual ~SharedMonitorFIFO();
+};
+
+struct SharedPut : public pva::ChannelPut,
+                   public std::tr1::enable_shared_from_this<SharedPut>
+{
+    const std::tr1::shared_ptr<SharedChannel> channel;
+    const requester_type::weak_pointer requester;
+    const pvd::PVStructure::const_shared_pointer pvRequest;
+
+    static size_t num_instances;
+
+    SharedPut(const std::tr1::shared_ptr<SharedChannel>& channel,
+              const requester_type::shared_pointer& requester,
+              const pvd::PVStructure::const_shared_pointer &pvRequest);
+    virtual ~SharedPut();
+
+    virtual void destroy() OVERRIDE FINAL;
+    virtual std::tr1::shared_ptr<pva::Channel> getChannel() OVERRIDE FINAL;
+    virtual void cancel() OVERRIDE FINAL;
+    virtual void lastRequest() OVERRIDE FINAL;
+
+    virtual void put(
+        epics::pvData::PVStructure::shared_pointer const & pvPutStructure,
+        epics::pvData::BitSet::shared_pointer const & putBitSet) OVERRIDE FINAL;
+
+    virtual void get() OVERRIDE FINAL;
+};
+
+struct SharedRPC : public pva::ChannelRPC,
+                   public std::tr1::enable_shared_from_this<SharedRPC>
+{
+    const std::tr1::shared_ptr<SharedChannel> channel;
+    const requester_type::weak_pointer requester;
+    const pvd::PVStructure::const_shared_pointer pvRequest;
+
+    static size_t num_instances;
+
+    SharedRPC(const std::tr1::shared_ptr<SharedChannel>& channel,
+              const requester_type::shared_pointer& requester,
+              const pvd::PVStructure::const_shared_pointer &pvRequest);
+    virtual ~SharedRPC();
+
+    virtual void destroy() OVERRIDE FINAL;
+    virtual std::tr1::shared_ptr<pva::Channel> getChannel() OVERRIDE FINAL;
+    virtual void cancel() OVERRIDE FINAL;
+    virtual void lastRequest() OVERRIDE FINAL;
+
+    virtual void request(epics::pvData::PVStructure::shared_pointer const & pvArgument) OVERRIDE FINAL;
+};
+
+struct Operation::Impl
+{
+    static size_t num_instances;
+
+    epicsMutex mutex;
+
+    const pvd::PVStructure::const_shared_pointer pvRequest, value;
+    const pvd::BitSet changed;
+
+    bool done;
+    int debugLvl;
+
+    Impl(const pvd::PVStructure::const_shared_pointer& pvRequest,
+         const pvd::PVStructure::const_shared_pointer& value,
+         const pvd::BitSet& changed,
+         int debugLvl = 0)
+        :pvRequest(pvRequest), value(value), changed(changed), done(false), debugLvl(debugLvl)
+    {}
+    virtual ~Impl() {}
+
+    virtual pva::Channel::shared_pointer getChannel() =0;
+    virtual pva::ChannelBaseRequester::shared_pointer getRequester() =0;
+    virtual void complete(const pvd::Status& sts,
+                          const epics::pvData::PVStructure* value) =0;
+
+    struct Cleanup {
+        void operator()(Impl*);
+    };
+};
+
+} // namespace pvas
+
+#endif // SHAREDSTATEIMPL_H