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addresses #686

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add comments for several member variables

git-svn-id: file:///svn/mysql/tokudb-engine/src@3535 c7de825b-a66e-492c-adef-691d508d4ae1
This commit is contained in:
Zardosht Kasheff 2008-04-21 14:53:25 +00:00 • committed by Yoni Fogel
parent 70c7d6cdb5
commit 3c671f37a1
1 changed files with 32 additions and 2 deletions
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34
storage/tokudb/ha_tokudb.h
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@ -36,9 +36,40 @@ private:
// TODO: make sure current_row gets set properly
//
DBT current_row;
//
// pointer used for multi_alloc of key_buff, key_buff2, primary_key_buff
//
void *alloc_ptr;
//
// buffer used to temporarily store a "packed row"
// data pointer of a DBT will end up pointing to this
// see pack_row for usage
//
uchar *rec_buff;
uchar *key_buff, *key_buff2, *primary_key_buff;
//
// number of bytes allocated in rec_buff
//
ulong alloced_rec_buff_length;
//
// buffer used to temporarily store a "packed key"
// data pointer of a DBT will end up pointing to this
//
uchar *key_buff;
//
// buffer used to temporarily store a "packed key"
// data pointer of a DBT will end up pointing to this
// This is used in functions that require the packing
// of more than one key
//
uchar *key_buff2;
//
// buffer used to temporarily store a "packed key"
// data pointer of a DBT will end up pointing to this
// currently this is only used for a primary key in
// the function update_row, hence the name. It
// does not carry any state throughout the class.
//
uchar *primary_key_buff;
//
// DB that is indexed on the primary key
@ -67,7 +98,6 @@ private:
// flags that are returned in table_flags()
//
ulong int_table_flags;
ulong alloced_rec_buff_length;
//
// count on the number of rows that gets changed, such as when write_row occurs
//