Most of the functionality in place.

[idzebra-moved-to-github.git] / include / isam.h

diff --git a/include/isam.h b/include/isam.h
index d9a4d15..dd70f69 100644 (file)
--- a/include/isam.h
+++ b/include/isam.h
@@ -4,7 +4,10 @@
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: isam.h,v $
- * Revision 1.2  1994-09-14 13:10:35  quinn
+ * Revision 1.3  1994-09-26 16:08:42  quinn
+ * Most of the functionality in place.
+ *
+ * Revision 1.2  1994/09/14  13:10:35  quinn
  * Small changes
  *
  * Revision 1.1  1994/09/12  08:02:07  quinn
@@ -19,6 +22,8 @@
 #include <isam.h>
 
 #define IS_MAX_BLOCKTYPES 4
+#define IS_MAX_RECORD 512
+#define IS_DEF_REPACK_PERCENT "30" /* how much relative change before repack */
 
 typedef unsigned int SYSNO; /* should be somewhere else */
 typedef unsigned int ISAM_P;
@@ -32,9 +37,13 @@ typedef struct isam_blocktype
     int blocksize;
     int first_block;             /* position of first data block */
     int max_keys_block;          /* max num of keys per block */
+    int max_keys_block0;         /* max num of keys in first block */
     int nice_keys_block;         /* nice number of keys per block */
     int max_keys;                /* max number of keys per table */
     int freelist;                /* fist free block */
+    int top;                     /* first unused block */
+    int index;                   /* placeholder. Always 0. */
+    char *dbuf;                  /* buffer for use in I/O operations */
 } isam_blocktype;
 
 /*
@@ -46,6 +55,7 @@ typedef struct isam_struct
     int num_types;                /* number of block types used */
     int writeflag;
     int keysize;                  /* size of the keys (records) used */
+    int repack;                   /* how many percent to grow before repack */
     int (*cmp)(const void *k1, const void *k2); /* compare function */
 } isam_struct, *ISAM;
 
@@ -57,8 +67,10 @@ typedef struct ispt_struct
     struct ispt_struct *next;      /* freelist */
 } ispt_struct, *ISPT; 
 
-#define IS_TYPE(x) ((x) & 3))      /* type part of position */
-#define IS_BLOCK(x) ((x >> 2))     /* block # part of position */
+#define is_type(x) ((x) & 3)      /* type part of position */
+#define is_block(x) ((x) >> 2)     /* block # part of position */
+
+#define is_keysize(is) ((is)->keysize)
 
 /*
  * Public Prototypes.
@@ -91,4 +103,8 @@ void is_pt_free(ISPT ip);
  */
 int is_readkey(ISPT ip, void *buf);
 
+int is_writekey(ISPT ip, const void *buf);
+
+ISAM_P is_merge(ISAM is, ISAM_P pos, int num, const char *data);
+
 #endif