Initial import of the CDE 2.1.30 sources from the Open Group.

cde/programs/dtinfo/DtMmdb/object/handler.h

@@ -0,0 +1,109 @@
+/*
+ * $XConsortium: handler.h /main/4 1996/07/18 14:41:47 drk $
+ *
+ * Copyright (c) 1992 HAL Computer Systems International, Ltd.
+ * All rights reserved.  Unpublished -- rights reserved under
+ * the Copyright Laws of the United States.  USE OF A COPYRIGHT
+ * NOTICE IS PRECAUTIONARY ONLY AND DOES NOT IMPLY PUBLICATION
+ * OR DISCLOSURE.
+ * 
+ * THIS SOFTWARE CONTAINS CONFIDENTIAL INFORMATION AND TRADE
+ * SECRETS OF HAL COMPUTER SYSTEMS INTERNATIONAL, LTD.  USE,
+ * DISCLOSURE, OR REPRODUCTION IS PROHIBITED WITHOUT THE
+ * PRIOR EXPRESS WRITTEN PERMISSION OF HAL COMPUTER SYSTEMS
+ * INTERNATIONAL, LTD.
+ * 
+ *                         RESTRICTED RIGHTS LEGEND
+ * Use, duplication, or disclosure by the Government is subject
+ * to the restrictions as set forth in subparagraph (c)(l)(ii)
+ * of the Rights in Technical Data and Computer Software clause
+ * at DFARS 252.227-7013.
+ *
+ *          HAL COMPUTER SYSTEMS INTERNATIONAL, LTD.
+ *                  1315 Dell Avenue
+ *                  Campbell, CA  95008
+ * 
+ */
+
+
+#ifndef _handler_h
+#define _handler_h 1
+
+#include "dstr/memory_pool.h"
+#include "storage/page_storage.h"
+#include "object/root.h"
+#include "mgrs/template_mgr.h"
+
+class handler : public Destructable
+{
+
+public:
+   handler() ;
+   handler(const oid_t& id, abs_storage* store = 0);
+   handler(c_code_t class_code, abs_storage* store);
+   handler(rootPtr ptr, abs_storage* store);
+
+   virtual ~handler();
+
+// a light-weight way to resue handler resouce
+   void set(rootPtr ptr, abs_storage* store);
+
+   virtual void sync();
+   virtual void commit();
+   virtual void destroy();
+
+   void* operator new( size_t ); 
+   void operator delete( void* ); 
+
+   root* operator ->();
+   operator root&();
+
+#ifdef A16_BROWSER
+   oid_t& its_oid() { return obj_id; } ;
+#else
+   const oid_t& its_oid() const { return obj_id; } ;
+#endif
+
+   abs_storage* its_store() const { return store; } ;
+
+protected:
+   //static memory_pool handler_space_pool;
+
+protected:
+   rootPtr obj_ptr;
+   abs_storage* store;
+   oid_t obj_id;
+};
+
+
+#define HANDLER_SIGNATURES(class_name) \
+class class_name ## _handler : public handler \
+{ \
+ \
+public: \
+   class_name ## _handler(const oid_t&, storagePtr = 0); \
+   virtual ~class_name ## _handler(); \
+ \
+   class_name * operator ->(); \
+}; \
+\
+typedef class_name ## _handler* class_name ## _handlerPtr; 
+
+
+#define HANDLER_BODIES(class_name) \
+\
+class_name ## _handler::class_name ## _handler(const oid_t& v_oid, storagePtr _store): \
+handler(v_oid, _store) \
+{ \
+} \
+ \
+class_name ## _handler::~class_name ## _handler() \
+{ \
+} \
+ \
+class_name* class_name ## _handler::operator ->() \
+{ \
+   return (class_name*)handler::operator->(); \
+} 
+ 
+#endif