major revisions

src/ca/syncGroupNotify.cpp

@@ -0,0 +1,130 @@
+
+/*
+ *  $Id$
+ *      Author: Jeffrey O. Hill
+ *              hill@luke.lanl.gov
+ *              (505) 665 1831
+ *
+ *      Experimental Physics and Industrial Control System (EPICS)
+ *
+ *      Copyright 1991, the Regents of the University of California,
+ *      and the University of Chicago Board of Governors.
+ *
+ *      This software was produced under  U.S. Government contracts:
+ *      (W-7405-ENG-36) at the Los Alamos National Laboratory,
+ *      and (W-31-109-ENG-38) at Argonne National Laboratory.
+ *
+ *      Initial development by:
+ *              The Controls and Automation Group (AT-8)
+ *              Ground Test Accelerator
+ *              Accelerator Technology Division
+ *              Los Alamos National Laboratory
+ *
+ *      Co-developed with
+ *              The Controls and Computing Group
+ *              Accelerator Systems Division
+ *              Advanced Photon Source
+ *              Argonne National Laboratory
+ *
+ */
+
+#include "iocinf.h"
+
+tsFreeList < class syncGroupNotify > syncGroupNotify::freeList;
+
+syncGroupNotify::syncGroupNotify ( CASG &sgIn, void *pValueIn ) :
+    sg (sgIn), magic (CASG_MAGIC), pValue (pValueIn), seqNo ( sgIn.seqNo )
+{
+    this->sg.mutex.lock ();
+    this->sg.ioList.add (*this);
+    this->sg.opPendCount++;
+    this->sg.mutex.unlock ();
+}
+
+void syncGroupNotify::destroy ()
+{
+    delete this;
+}
+
+syncGroupNotify::~syncGroupNotify ()
+{
+    this->sg.mutex.lock ();
+    this->sg.ioList.remove (*this);
+    this->sg.mutex.unlock ();
+}
+
+void syncGroupNotify::completionNotify ()
+{
+    if ( this->magic != CASG_MAGIC ) {
+        ca_printf ("cac: sync group io_complete(): bad sync grp op magic number?\n");
+        return;
+    }
+
+    this->sg.mutex.lock ();
+    if ( this->seqNo == this->sg.seqNo ) {
+        assert ( this->sg.opPendCount > 0u );
+        this->sg.opPendCount--;
+    }
+    this->sg.mutex.unlock ();
+
+    if ( this->sg.opPendCount == 0 ) {
+        this->sg.sem.signal ();
+    }
+}
+
+void syncGroupNotify::completionNotify ( unsigned type, unsigned long count, const void *pData )
+{
+    if ( this->magic != CASG_MAGIC ) {
+        ca_printf ("cac: sync group io_complete(): bad sync grp op magic number?\n");
+        return;
+    }
+
+    this->sg.mutex.lock ();
+    if ( this->seqNo == this->sg.seqNo ) {
+        /*
+         * Update the user's variable
+         */
+        if ( this->pValue ) {
+            size_t size = dbr_size_n ( type, count );
+            memcpy (this->pValue, pData, size);
+        }
+        assert ( this->sg.opPendCount > 0u );
+        this->sg.opPendCount--;
+    }
+    this->sg.mutex.unlock ();
+
+    if ( this->sg.opPendCount == 0 ) {
+        this->sg.sem.signal ();
+    }
+}
+
+void syncGroupNotify::show (unsigned level) const
+{
+    printf ( "pending sg op: pVal=%p, magic=%u seqNo=%lu sg=%p\n",
+         this->pValue, this->magic, this->seqNo, &this->sg);
+}
+
+void syncGroupNotify::exceptionNotify ( int status, const char *pContext )
+{
+    ca_signal_formated ( status, __FILE__, __LINE__, 
+            "CA Sync Group request failed because \"%s\"\n", pContext);
+}
+
+void syncGroupNotify::exceptionNotify ( int status, const char *pContext, unsigned type, unsigned long count )
+{
+    ca_signal_formated ( status, __FILE__, __LINE__, 
+            "CA Sync Group request failed with type=%d count=%ld because \"%s\"\n", 
+            type, count, pContext);
+}
+
+void * syncGroupNotify::operator new (size_t size)
+{
+    return syncGroupNotify::freeList.allocate ( size );
+}
+
+void syncGroupNotify::operator delete (void *pCadaver, size_t size)
+{
+    syncGroupNotify::freeList.release ( pCadaver, size );
+}
+
+