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MySQL 5.1: mysql/src/5.1-dbg/storage/innobase/include/usr0sess.h Source File
mysql/src/5.1-dbg/storage/innobase/include/usr0sess.h

00001 /******************************************************
00002 Sessions
00003 
00004 (c) 1996 Innobase Oy
00005 
00006 Created 6/25/1996 Heikki Tuuri
00007 *******************************************************/
00008 
00009 #ifndef usr0sess_h
00010 #define usr0sess_h
00011 
00012 #include "univ.i"
00013 #include "ut0byte.h"
00014 #include "trx0types.h"
00015 #include "srv0srv.h"
00016 #include "trx0types.h"
00017 #include "usr0types.h"
00018 #include "que0types.h"
00019 #include "data0data.h"
00020 #include "rem0rec.h"
00021 
00022 /*************************************************************************
00023 Opens a session. */
00024 
00025 sess_t*
00026 sess_open(void);
00027 /*============*/
00028                                         /* out, own: session object */
00029 /*************************************************************************
00030 Closes a session, freeing the memory occupied by it, if it is in a state
00031 where it should be closed. */
00032 
00033 ibool
00034 sess_try_close(
00035 /*===========*/
00036                                 /* out: TRUE if closed */
00037         sess_t*         sess);  /* in, own: session object */
00038 
00039 /* The session handle. All fields are protected by the kernel mutex */
00040 struct sess_struct{
00041         ulint           state;          /* state of the session */
00042         trx_t*          trx;            /* transaction object permanently
00043                                         assigned for the session: the
00044                                         transaction instance designated by the
00045                                         trx id changes, but the memory
00046                                         structure is preserved */
00047         UT_LIST_BASE_NODE_T(que_t)
00048                         graphs;         /* query graphs belonging to this
00049                                         session */
00050 };
00051 
00052 /* Session states */
00053 #define SESS_ACTIVE             1
00054 #define SESS_ERROR              2       /* session contains an error message
00055                                         which has not yet been communicated
00056                                         to the client */
00057 #ifndef UNIV_NONINL
00058 #include "usr0sess.ic"
00059 #endif
00060 
00061 #endif
Generated on Sat Sep 9 00:50:27 2006 for MySQL 5.1 by
1.4.7