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95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
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/*-------------------------------------------------------------------------
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*
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* libpq-events.h
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* This file contains definitions that are useful to applications
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* that invoke the libpq "events" API, but are not interesting to
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* ordinary users of libpq.
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*
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* Portions Copyright (c) 1996-2011, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/interfaces/libpq/libpq-events.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef LIBPQ_EVENTS_H
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#define LIBPQ_EVENTS_H
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#include "libpq-fe.h"
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/* Callback Event Ids */
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typedef enum
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{
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PGEVT_REGISTER,
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PGEVT_CONNRESET,
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PGEVT_CONNDESTROY,
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PGEVT_RESULTCREATE,
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PGEVT_RESULTCOPY,
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PGEVT_RESULTDESTROY
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} PGEventId;
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typedef struct
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{
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PGconn *conn;
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} PGEventRegister;
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typedef struct
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{
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PGconn *conn;
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} PGEventConnReset;
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typedef struct
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{
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PGconn *conn;
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} PGEventConnDestroy;
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typedef struct
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{
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PGconn *conn;
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PGresult *result;
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} PGEventResultCreate;
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typedef struct
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{
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const PGresult *src;
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PGresult *dest;
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} PGEventResultCopy;
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typedef struct
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{
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PGresult *result;
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} PGEventResultDestroy;
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typedef int (*PGEventProc) (PGEventId evtId, void *evtInfo, void *passThrough);
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/* Registers an event proc with the given PGconn. */
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extern int PQregisterEventProc(PGconn *conn, PGEventProc proc,
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const char *name, void *passThrough);
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/* Sets the PGconn instance data for the provided proc to data. */
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extern int PQsetInstanceData(PGconn *conn, PGEventProc proc, void *data);
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/* Gets the PGconn instance data for the provided proc. */
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extern void *PQinstanceData(const PGconn *conn, PGEventProc proc);
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/* Sets the PGresult instance data for the provided proc to data. */
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extern int PQresultSetInstanceData(PGresult *result, PGEventProc proc, void *data);
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/* Gets the PGresult instance data for the provided proc. */
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extern void *PQresultInstanceData(const PGresult *result, PGEventProc proc);
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/* Fires RESULTCREATE events for an application-created PGresult. */
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extern int PQfireResultCreateEvents(PGconn *conn, PGresult *res);
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#ifdef __cplusplus
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}
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#endif
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#endif /* LIBPQ_EVENTS_H */
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