gdk_delta.h

这个是内存数据库中的一个管理工具

#ifndef _GDK_DELTA_H_
#define _GDK_DELTA_H_
#include "gdk.h"



#define DELTAprintf DELTADEBUG printf
#define DELTAinit(P1)	do {						      \
	BATsetcount((P1), 0);						      \
	(P1)->batBuns->free = 0;					      \
	(P1)->batDeleted = (P1)->batInserted = (P1)->batFirst = 	      \
		(BUN) Bunbase(P1);      	                              \
	(P1)->batElmshift = BATelmshift((P1));				      \
	DELTAprintf(							      \
	 	"#DELTAinit %s free " SZFMT " ins " PTRFMT " del " PTRFMT " first " PTRFMT " base " PTRFMT "\n", \
		BATgetId(P1),				      \
		(P1)->batBuns->free,			      \
		PTRFMTCAST (P1)->batInserted,		      \
		PTRFMTCAST (P1)->batDeleted,		      \
		PTRFMTCAST (P1)->batFirst,		      \
		PTRFMTCAST (P1)->batBuns->base );	      \
} while (0)


#define DELTAsave(P1)	do {						\
	(P1)->batInserted = (BUN) BUNindex((P1), (P1)->batInserted);	\
	(P1)->batDeleted = (BUN) BUNindex((P1), (P1)->batDeleted);	\
	(P1)->batFirst = (BUN) BUNindex((P1), (P1)->batFirst);		\
	DELTAprintf(							\
	 	"#DELTAsave %s free " SZFMT " ins " PTRFMT " del " PTRFMT " first " PTRFMT " base " PTRFMT "\n", \
		BATgetId(P1),						\
		(P1)->batBuns->free,					\
		PTRFMTCAST (P1)->batInserted,				\
		PTRFMTCAST (P1)->batDeleted,				\
		PTRFMTCAST (P1)->batFirst,				\
		PTRFMTCAST (P1)->batBuns->base );			\
} while (0)

#define DELTAload(P1)	do {						\
	DELTAprintf(							\
		"#DELTAload %s free " SZFMT " ins " PTRFMT " del " PTRFMT " first " PTRFMT " base " PTRFMT "\n", \
		BATgetId(P1),						\
		(P1)->batBuns->free,					\
		PTRFMTCAST (P1)->batInserted,				\
		PTRFMTCAST (P1)->batDeleted,				\
		PTRFMTCAST (P1)->batFirst,				\
		PTRFMTCAST (P1)->batBuns->base );			\
	(P1)->batInserted = BUNptr((P1), (size_t) (P1)->batInserted);	\
	(P1)->batDeleted = BUNptr((P1), (size_t) (P1)->batDeleted);	\
	(P1)->batFirst = BUNptr((P1), (size_t) (P1)->batFirst);		\
} while (0)


#define DELTAdirty(b)	(((b)->batDeleted != (b)->batFirst) ||\
	((b)->batInserted < (b)->batBuns->base+(b)->batBuns->free))

#endif /* _GDK_DELTA_H_ */