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allow PVs to exist without a server

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This commit is contained in:
Jeff Hill
1998-06-16 02:34:14 +00:00
parent 233dc670a3
commit 65e1e8203e
1 changed files with 13 additions and 7 deletions
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20
src/cas/generic/casdef.h
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@@ -30,6 +30,9 @@
* Modification Log:
* -----------------
* $Log$
* Revision 1.17 1998/05/05 16:30:38 jhill
* fixed doc
*
* Revision 1.16 1998/03/18 23:59:28 jhill
* use _MSC_VER to turn of vis C++ specific warning
*
@@ -171,6 +174,8 @@ typedef aitUint32 caStatus;
#define S_cas_tooManyEvents (M_cas | 28) /*maximum simult event types exceeded*/
#define S_cas_noInterface (M_cas | 29) /*server isnt attached to a network*/
#define S_cas_badBounds (M_cas | 30) /*server tool changed bounds on request*/
#define S_cas_pvAlreadyAttached (M_cas | 31) /*PV attached to another server*/
#define S_cas_badRequest (M_cas | 32) /*client's request was invalid*/
/*
* ===========================================================
* returned by the application (to the server library)
@@ -308,7 +313,7 @@ private:
caServerI *pCAS;
public:
epicsShareFunc caServer (unsigned pvCountEstimate=1024u);
epicsShareFunc virtual ~caServer();
epicsShareFunc virtual ~caServer() = 0;
//caStatus enableClients ();
//caStatus disableClients ();
@@ -412,15 +417,15 @@ public:
// client attachment to this PV (and reclaim any resources
// allocated by the server library on its behalf)
//
// NOTE: if the server tool precreates the PV during initialization
// HINT: if the server tool precreates the PV during initialization
// then it may decide to provide a "destroy()" implementation in the
// derived class which is a noop.
//
class casPV : private casPVI {
public:
epicsShareFunc casPV (caServer &cas);
epicsShareFunc casPV ();
epicsShareFunc virtual ~casPV ();
epicsShareFunc virtual ~casPV () = 0;
//
// This is called for each PV in the server if
@@ -584,9 +589,10 @@ public:
// Find the server associated with this PV
// ****WARNING****
// this returns NULL if the PV isnt currently installed
// into a server (this situation will exist only if
// into a server (this situation will exist if
// the pv isnt deleted in a derived classes replacement
// for virtual casPV::destroy()
// for virtual casPV::destroy() or if the PV is created
// before the server
// ***************
//
epicsShareFunc caServer *getCAS() const;
@@ -730,7 +736,7 @@ public:
//
// force virtual destructor
//
epicsShareFunc virtual ~casAsyncIO();
epicsShareFunc virtual ~casAsyncIO() = 0;
//
// called by the server lib after the response message