PQgetlineAsync (copy in/out Asynch.)
PQputnbytes (copy in/out Asynch.)
PQendcopy (copy in/out)
- PQsetenvStart (Asynch. Queries)
- PQsetenvPoll (Asynch. Queries)
- PQsetenvHandle (Asynch. Queries)
Unsupported functions:
PQsetdbLogin -- This function is deprecated, has a subset of the
*/
#if (EMACS_MAJOR_VERSION == 21) && (EMACS_MINOR_VERSION < 2)
#define RUNNING_XEMACS_21_1 1
+#define POSTGRES_INCLUDE(file) <file>
#endif
/* #define POSTGRES_LO_IMPORT_IS_VOID 1 */
#include "sysdep.h"
#include "buffer.h"
-#include <libpq-fe.h>
-/* Undefine the following when asynchronous setenvs are fixed in libpq. */
-/* #define LIBPQ_7_0_IS_FIXED */
+#include POSTGRES_INCLUDE (libpq-fe.h)
#include "postgresql.h"
#ifdef RUNNING_XEMACS_21_1 /* handle interface changes */
Lisp_PGresult);
#endif
-/****/
-#ifdef HAVE_POSTGRESQLV7
-/* PGsetenvHandle is an opaque object and we need to be able to store them in
- Lisp code so we can make asynchronous environmental calls.
-
- Asynchronous setenv calls were introduced in libpq-7.0.
-*/
-#ifdef LIBPQ_7_0_IS_FIXED
-
-Lisp_Object Qpgsetenvp;
-
-static Lisp_Object
-make_pgsetenv (Lisp_PGsetenvHandle *pgsetenv)
-{
- Lisp_Object lisp_pgsetenv;
- XSETPGSETENV (lisp_pgsetenv, pgsetenv);
- return lisp_pgsetenv;
-}
-
-static Lisp_Object
-#ifdef RUNNING_XEMACS_21_1
-mark_pgsetenv (Lisp_Object obj, void (*markobj) (Lisp_Object))
-#else
-mark_pgsetenv (Lisp_Object obj)
-#endif
-{
- return Qnil;
-}
-
-static void
-print_pgsetenv (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
-{
- char *fmt = "#<PGsetenvHandle %s>";
- char buf[1024];
- PGsetenvHandle *h;
-
- h = (XPGSETENV (obj))->pgsetenv;
-
- sprintf (buf, fmt, h ? "live" : "DEAD");
-
- /* There are no accessor functions to retrieve any fields, so we must */
- /* treat this as being completely opaque. */
- if (print_readably)
- error ("printing unreadable object %s", buf);
- else
- write_c_string (buf, printcharfun);
-}
-
-static Lisp_PGsetenvHandle *
-allocate_pgresult (void)
-{
-#ifdef RUNNING_XEMACS_21_1
- Lisp_PGsetenvHandle *pgsetenv =
- alloc_lcrecord_type (Lisp_PGsetenvHandle, lrecord_pgsetenv);
-#else
- Lisp_PGsetenvHandle *pgsetenv =
- alloc_lcrecord_type (Lisp_PGsetenvHandle, &lrecord_pgsetenv);
-#endif
- pgsetenv->pgsetenv = (PGsetenvState *)NULL;
- return pgsetenv;
-}
-
-static void
-finalize_pgsetenv (void *header, int for_disksave)
-{
- Lisp_PGsetenvHandle *pgsetenv = (Lisp_PGsetenvHandle *)header;
-
- if (for_disksave)
- signal_simple_error ("Can't dump an emacs containing PGsetenvHandle objects",
- make_pgsetenv (pgsetenv));
-
- /* #### PGsetenvHandle's are allocated with malloc(), however in
- libpq-7.0 the treatment of them is little short of disastrous.
- We don't dare attempt to free it, because there are many code
- paths which lead to the handle being freed internally. The
- connection routines leak setenv handles and so will we until
- libpq gets cleaned up.
- Actually, in 7.0b1 asynchronous setenv cannot work outside libpq, so
- these functions are disabled in this API.
- */
- if (pgsetenv->pgsetenv)
- {
- free (pgsetenv->pgsetenv);
- pgsetenv->pgsetenv = (PGsetenvHandle *)NULL;
- }
-}
-
-#ifdef RUNNING_XEMACS_21_1
-DEFINE_LRECORD_IMPLEMENTATION ("pgresult", pgresult,
- mark_pgresult, print_pgresult, finalize_pgresult,
- NULL, NULL,
- Lisp_PGresult);
-#else
-DEFINE_LRECORD_IMPLEMENTATION ("pgresult", pgresult,
- mark_pgresult, print_pgresult, finalize_pgresult,
- NULL, NULL,
- 0,
- Lisp_PGresult);
-#endif /* RUNNING_XEMACS_21_1 */
-
-#endif /* LIBPQ_7_0_IS_FIXED */
-#endif /* HAVE_POSTGRESQLV7 */
-
/***********************/
/* notices */
return PQendcopy (P) ? Qt : Qnil;
}
-/* The setenv suite of functions. The author of the libpq manual doesn't
- know a whole lot about them, and neither do I.
-*/
-#if !defined (HAVE_POSTGRESQLV7) || defined (LIBPQ_7_0_IS_FIXED)
-DEFUN ("pq-setenv", Fpq_setenv, 1, 1, 0, /*
-Set environmental parameters on the backend synchronously.
-Returns t if the operation was successful, nil otherwise.
-*/
- (conn))
-{
- PGconn *P;
-
- CHECK_PGCONN (conn);
- P = (XPGCONN (conn))->pgconn;
- CHECK_LIVE_CONNECTION (P);
-
- return PQsetenv (P) ? Qt : Qnil;
-}
-#endif
-
-#ifdef LIBPQ_7_0_IS_FIXED
-
-DEFUN ("pq-setenv-start", Fpq_setenv_start, 1, 1, 0, /*
-Set environmental parameters on the backend asynchronously.
-A PGsetenvHandle is returned on success, nil otherwise.
-*/
- (conn))
-{
- PGconn *P;
- PGsetenvHandle *handle;
- Lisp_setenvHandle *lseh;
-
- CHECK_PGCONN (conn);
- P = (XPGCONN (conn))->pgconn;
- CHECK_LIVE_CONNECTION (P);
-
- handle = PQsetenvStart (P);
- if (!handle) error ("out of memory?");
-
- lseh = allocate_pgsetenv ();
- lseh->setenv = handle;
-
- return make_pgsetenv (lseh);
-}
-
-DEFUN ("pq-setenv-poll", Fpq_setenv_poll, 1, 1, 0, /*
-Poll an asynchronous setenv operation for completion.
-*/
- (conn))
-{
- PGconn *P;
- PostgresPollingStatusType pst;
-
- CHECK_PGCONN (conn);
- P = (XPGCONN (conn))->pgconn;
- CHECK_LIVE_CONNECTION (P);
-
- pst = PQsetenvPoll (P);
- switch (pst)
- {
- case PGRES_POLLING_FAILED:
- /* Something Bad has happened */
- {
- char *e = PQerrorMessage (P);
- error ("libpq: %s", e);
- }
- case PGRES_POLLING_OK:
- return Qpgres_polling_ok;
- case PGRES_POLLING_READING:
- return Qpgres_polling_reading;
- case PGRES_POLLING_WRITING:
- return Qpgres_polling_writing;
- case PGRES_POLLING_ACTIVE:
- return Qpgres_polling_active;
- default:
- /* they've added a new field we don't know about */
- error ("Help! Unknown status code %08x from backend!", PS);
- }
-}
-
-DEFUN ("pq-setenv-abort", Fpq_setenv_abort, 1, 1, 0, /*
-Attempt to abort an in-progress asynchronous setenv operation.
-*/
- (handle))
-{
- PGsetenvHandle *h;
-
- CHECK_PGSETENV (handle);
- h = (XPGSETENV (handle))->pgsetenv;
- PUKE_IF_NULL (h);
-
- PQsetenvAbort (h);
- /* PQsetenvAbort usually free(3)'s the handle, don't take any chances. */
- (XSETENV (handle))->pgsetenv = (PGsetenvHandle *)NULL;
-
- return Qt;
-}
-#endif /* LIBPQ_7_0_IS_FIXED */
-
void
syms_of_postgresql(void)
{
#ifndef RUNNING_XEMACS_21_1
INIT_LRECORD_IMPLEMENTATION (pgconn);
INIT_LRECORD_IMPLEMENTATION (pgresult);
-#ifdef LIBPQ_7_0_IS_FIXED
- INIT_LRECORD_IMPLEMENTATION (pgsetenv);
-#endif
#endif
defsymbol (&Qpostgresql, "postgresql");
DEFSUBR (Fpq_get_line_async);
DEFSUBR (Fpq_put_nbytes);
DEFSUBR (Fpq_end_copy);
-
- /* The value of the setenv functions is questioned in the libpq manual. */
-#if !defined (HAVE_POSTGRESQLV7) || defined (LIBPQ_7_0_IS_FIXED)
- DEFSUBR (Fpq_setenv);
-#endif
-#ifdef LIBPQ_7_0_IS_FIXED
- DEFSUBR (Fpq_setenv_start);
- DEFSUBR (Fpq_setenv_poll);
- DEFSUBR (Fpq_setenv_abort);
-#endif /* LIBPQ_7_0_IS_FIXED */
}
void
projects / chise / xemacs-chise.git.1 / blobdiff