diff options
Diffstat (limited to 'storage/innobase/include/que0types.h')
-rw-r--r-- | storage/innobase/include/que0types.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/storage/innobase/include/que0types.h b/storage/innobase/include/que0types.h new file mode 100644 index 00000000000..e59c2313a5a --- /dev/null +++ b/storage/innobase/include/que0types.h @@ -0,0 +1,43 @@ +/****************************************************** +Query graph global types + +(c) 1996 Innobase Oy + +Created 5/27/1996 Heikki Tuuri +*******************************************************/ + +#ifndef que0types_h +#define que0types_h + +#include "data0data.h" +#include "dict0types.h" + +/* Pseudotype for all graph nodes */ +typedef void que_node_t; + +typedef struct que_fork_struct que_fork_t; + +/* Query graph root is a fork node */ +typedef que_fork_t que_t; + +typedef struct que_thr_struct que_thr_t; +typedef struct que_common_struct que_common_t; + +/* Common struct at the beginning of each query graph node; the name of this +substruct must be 'common' */ + +struct que_common_struct{ + ulint type; /* query node type */ + que_node_t* parent; /* back pointer to parent node, or NULL */ + que_node_t* brother;/* pointer to a possible brother node */ + dfield_t val; /* evaluated value for an expression */ + ulint val_buf_size; + /* buffer size for the evaluated value data, + if the buffer has been allocated dynamically: + if this field is != 0, and the node is a + symbol node or a function node, then we + have to free the data field in val + explicitly */ +}; + +#endif |