analytics/informix/incl/public/xa.h

/*
 *  Licensed Materials - Property of IBM and/or HCL
 *
 *  IBM Informix Dynamic Server
 *  (c) Copyright IBM Corporation 1996, 2004 All rights reserved.
 *  (c) Copyright HCL Technologies Ltd. 2017.  All Rights Reserved.
 *
 ***************************************************************************
 *
 *  Title:	xa.h
 *  Description:
 *		Standard header file for xa.  This comes from the X/OPEN
 *		XA spec and should not be modified unless the standard
 *		changes.
 *
 ***************************************************************************
 */

/*
 * Start of xa.h header
 *
 * Define a symbol to prevent multiple inclusions of this header file.
 */
#ifndef XA_H
#define XA_H

#include "ifxtypes.h"

/*
 * Global transaction identification: XID and NULLXID:
 */
#define XIDDATASIZE	128	/* size in bytes */
#define MAXGTRIDSIZE	64	/* maximum size in bytes of gtrid */
#define MAXBQUALSIZE	64	/* maximum size in bytes of bqual */

struct xid_t
    {
    int4 formatID;		/* format identifier */
    int4 gtrid_length;		/* value from 1 through 64 */
    int4 bqual_length;		/* value from 1 through 64 */
    char data[XIDDATASIZE];
    };

typedef struct xid_t XID;

/*
 * A value of -1 in formatID means that the XID is null.
 */

/*
 * Declarations of routines by which RMs call TMs:
 */
/*
 * Informix never makes calls from the RM to the TM.
 *
#ifdef __STDC__
extern mint ax_reg(mint, XID *, int4);
extern mint ax_unreg(mint, int4);
#else
extern mint ax_reg();
extern mint ax_unreg();
#endif
 */

/*
 * XA Switch Data Structure
 */
#define RMNAMESZ	32	/* length of resource manager name,  */
				/* including the null terminator */
#define MAXINFOSIZE	256	/* maximum size in bytes of xa_info strings, */
				/* including the null terminator */
struct xa_switch_t
    {
    char name[RMNAMESZ];	/* name of resource manager          */
    int4 flags;			/* resource manager specific options */
    int4 version;		/* must be 0 */
#if defined(__STDC__) || defined(__cplusplus)
    mint (*xa_open_entry)(char *, mint, int4);
					/* xa_open function pointer 	     */
    mint (*xa_close_entry)(char *, mint, int4);
					/* xa_close function pointer         */
    mint (*xa_start_entry)(XID *, mint, int4);
					/* xa_start function pointer         */
    mint (*xa_end_entry)(XID *, mint, int4);
					/* xa_end function pointer           */
    mint (*xa_rollback_entry)(XID *, mint, int4);
					/* xa_rollback function pointer      */
    mint (*xa_prepare_entry)(XID *, mint, int4);
					/* xa_prepare function pointer       */
    mint (*xa_commit_entry)(XID *, mint, int4);
					/* xa_commit function pointer        */
    mint (*xa_recover_entry)(XID *, int4, mint, int4);	
					/* xa_recover function pointer       */
    mint (*xa_forget_entry)(XID *, mint, int4);
					/* xa_forget function pointer        */
    mint (*xa_complete_entry)(mint *, mint *, mint, int4);
					/* xa_complete function pointer      */
#else /* defined(__STDC__) || defined(__cplusplus) */
    mint (*xa_open_entry)();		/* xa_open function pointer          */
    mint (*xa_close_entry)();		/* xa_close function pointer         */
    mint (*xa_start_entry)();		/* xa_start function pointer         */
    mint (*xa_end_entry)();		/* xa_end function pointer           */
    mint (*xa_rollback_entry)();		/* xa_rollback function pointer      */
    mint (*xa_prepare_entry)();		/* xa_prepare function pointer       */
    mint (*xa_commit_entry)();		/* xa_commit function pointer        */
    mint (*xa_recover_entry)();		/* xa_recover function pointer       */
    mint (*xa_forget_entry)();		/* xa_forget function pointer        */
    mint (*xa_complete_entry)();		/* xa_complete function pointer      */
#endif /* defined(__STDC__) || defined(__cplusplus) */
    };

/*
 * Flag definitions for the RM switch.
 */
#define TMNOFLAGS	0x00000000L	/* no RM features selected      */
#define TMREGISTER	0x00000001L	/* RM dynamically registers     */
#define TMNOMIGRATE	0x00000002L	/* RM does not support
					    association migration       */
#define TMUSEASYNC	0x00000004L	/* RM supports async operations */

/*
 * Flag definitions for xa_ and ax_ routines
 */
/* use TMNOFLAGS, defined above, when not specifying other flags */
#define	TMASYNC		0x80000000L	/* perform routine asynchronously */
#define TMONEPHASE	0x40000000L	/* caller is using one-phase commit
					    optimisation */
#define TMFAIL		0x20000000L	/* dissociates caller and marks
					    transaction branch rollback-only */
#define TMNOWAIT	0x10000000L	/* return if blocking condition
					    exists */
#define TMRESUME	0x08000000L	/* caller is resuming association with
					    suspended transaction branch */
#define TMSUCCESS	0x04000000L	/* dissociate caller from transaction
					    branch */
#define TMSUSPEND	0x02000000L	/* caller is suspending, not ending,
					    association */
#define TMSTARTRSCAN	0x01000000L	/* start a recovery scan */
#define TMENDRSCAN	0x00800000L	/* end a recovery scan */
#define TMMULTIPLE	0x00400000L	/* wait for any async operation */
#define TMJOIN		0x00200000L	/* caller is joining existing 
					    transaction branch */
#define TMMIGRATE	0x00100000L	/* caller intends to perform
					    migration */
#define TMDRDATCS       0x00800000L     /* DRDA specific: tightly coupled transaction 
					 * Only valid in xa_start()
					 */
/*
 * ax_() return codes (transaction manager reports to resource manager)
 */
#define TM_JOIN		2	/* caller is joining existing transaction
				    branch */
#define TM_RESUME	1	/* caller is resuming assoc w/suspended
				    transaction branch */
#define TM_OK		0	/* normal execution */
#define TMER_TMERR	-1	/* an error occurred in trans. manager */
#define TMER_INVAL	-2	/* invalid arguments given */
#define TMER_PROTO	-3	/* routine invoked in improper context */

/*
 * xa_() return codes (resource manager reports to transaction manager)
 */
#define	XA_RBBASE	100		/* The inclusive lower bound of the
					    rollback codes */
#define XA_RBROLLBACK	XA_RBBASE	/* The rollback was caused by an
					    unspecified reason */
#define XA_RBCOMMFAIL	XA_RBBASE+1	/* The rollback was caused by a
					    communication failure */
#define XA_RBDEADLOCK	XA_RBBASE+2	/* A deadlock was detected */
#define XA_RBINTEGRITY	XA_RBBASE+3	/* A condition that violates the
					    integrity of the resources was
					    detected */
#define XA_RBOTHER	XA_RBBASE+4	/* The RM rolled back the trans. branch
					    for a reason not on this list */
#define XA_RBPROTO	XA_RBBASE+5	/* A protocol error occurred in the
					    RM */
#define XA_RBTIMEOUT	XA_RBBASE+6	/* A transaction branch took too long */
#define XA_RBTRANSIENT	XA_RBBASE+7	/* May retry the transaction branch */
#define XA_RBEND	XA_RBTRANSIENT	/* The inclusive upper bound of the
					    rollback codes */

#define XA_NOMIGRATE	9	/* resumption must occur where suspension
				    occurred */
#define XA_HEURHAZ	8	/* the transaction branch may have been 
				    heuristically completed */
#define XA_HEURCOM	7	/* the transaction branch has been
				    heuristically committed */
#define XA_HEURRB	6	/* the transaction branch has been
				    heuristically aborted */
#define XA_HEURMIX	5	/* the transaction branch has been
				    heuristically committed and aborted */
#define XA_RETRY	4	/* routine returned with no effect and may
				    be re-issued */
#define XA_RDONLY	3	/* the trans was read-only and has been
				    committed */
#define XA_OK		0	/* normal execution */
#define XAER_ASYNC	-2	/* async. operation already outstanding */
#define XAER_RMERR	-3	/* an RM error occurred in the transaction
				    branch */
#define XAER_NOTA	-4	/* the XID is not valid */
#define XAER_INVAL	-5	/* invalid arguments were given */
#define XAER_PROTO	-6	/* routine invoked in improper context */
#define XAER_RMFAIL	-7	/* RM unavailable */
#define XAER_DUPID	-8	/* the XID already exists */
#define XAER_OUTSIDE	-9	/* RM doing work outside global transaction */

#endif /* XA_H */

/* 
 * End of xa.h header
 */