- begun some work on Msg Object serializiation

- created a kind of general base class

1 files changed, 82 insertions, 0 deletions

diff --git a/obj.h b/obj.h
new file mode 100644
index 00000000..70cc021c
--- /dev/null
+++ b/obj.h
@@ -0,0 +1,82 @@
+/* Definition of the generic obj class module.
+ *
+ * This module relies heavily on preprocessor macros in order to
+ * provide fast execution time AND ease of use.
+ *
+ * Copyright 2008 Rainer Gerhards and Adiscon GmbH.
+ *
+ * This file is part of rsyslog.
+ *
+ * Rsyslog is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Rsyslog is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Rsyslog.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * A copy of the GPL can be found in the file "COPYING" in this distribution.
+ */
+
+#ifndef OBJ_H_INCLUDED
+#define OBJ_H_INCLUDED
+
+typedef enum {	/* IDs of known object "types/classes" */
+	objNull = 0,	/* no valid object (we do not start at zero so we can detect calloc()) */
+	objMsg = 1
+} objID_t;	
+
+typedef enum {	/* IDs of base methods supported by all objects - used for jump table, so
+		 * they must start at zero and be incremented. -- rgerahrds, 2008-01-04
+		 */
+	objMethod_DESTRUCT = 0,
+	objMethod_SERIALIZE = 1,
+	objMethod_DESERIALIZE = 2,
+	objMethod_DEBUGPRINT = 3
+} objMethod_t;
+#define OBJ_NUM_METHODS 4	/* must be updated to contain the max number of methods supported */
+
+typedef struct objInfo_s {
+	objID_t	objID;	
+	uchar *pszName;
+	rsRetVal (*objMethods[OBJ_NUM_METHODS])(void *pThis);
+} objInfo_t;
+
+typedef struct obj {	/* the dummy struct that each derived class can be casted to */
+	objInfo_t *pObjInfo;
+} obj_t;
+
+
+/* macros */
+#define DEFobjStaticHelpers static objInfo_t *pObjInfoOBJ = NULL;
+#define BEGINobjInstance objInfo_t *pObjInfo
+/* must be called in Constructor: */
+#define objConstructSetObjInfo(pThis) ((obj_t*) (pThis))->pObjInfo = pObjInfoOBJ;
+#define objDestruct(pThis) ((objInfo_t*) (pThis)->objMethods[objMethod_DESTRUCT])
+/* class initializer */
+#define PROTOTYPEObjClassInit(objName) rsRetVal objName##ClassInit(void)
+#define BEGINObjClassInit(objName) \
+rsRetVal objName##ClassInit(void) \
+{ \
+	DEFiRet; \
+	CHKiRet(objInfoConstruct(&pObjInfoOBJ, obj##objName, (uchar*) #objName, (rsRetVal (*)(void*))objName##Destruct)); 
+
+#define ENDObjClassInit \
+finalize_it: \
+	return iRet; \
+}
+
+#define OBJSetMethodHandler(methodID, pHdlr) \
+	CHKiRet(objInfoSetMethod(pObjInfoOBJ, methodID, (rsRetVal (*)(void*)) pHdlr))
+
+
+/* prototypes */
+rsRetVal objInfoConstruct(objInfo_t **ppThis, objID_t objID, uchar *pszName, rsRetVal (*pDestruct)(void *));
+rsRetVal objInfoSetMethod(objInfo_t *pThis, objMethod_t objMethod, rsRetVal (*pHandler)(void*));
+
+#endif /* #ifndef OBJ_H_INCLUDED */