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view modules/postgresql/postgresql.h @ 4499:eb82259f265d
Port write-region-inhibit-sync, allowing avoidance of bad FS performance.
See http://shaver.off.net/diary/2008/05/25/fsyncers-and-curveballs/ for more
details.
2008-08-09 Aidan Kehoe <kehoea@parhasard.net>
Integrate Romain Francoise' 2005-09-14 (pre-GPLV3) GNU change,
which can allow much better performace with some stupid
filesystems:
* fileio.c (write_region_inhibit_fsync): New variable.
(Fwrite_region): Use it to skip call to fsync.
(syms_of_fileio): Initialize it.
author | Aidan Kehoe <kehoea@parhasard.net> |
---|---|
date | Sat, 09 Aug 2008 16:44:46 +0200 |
parents | 6ef4efc5cfe0 |
children | e0db3c197671 |
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/* postgresql.h -- Emacs Lisp binding to libpq.so Copyright (C) 2000 Electrotechnical Laboratory, JAPAN. Licensed to the Free Software Foundation. Author: SL Baur <steve@xemacs.org> Maintainer: SL Baur <steve@xemacs.org> Please send patches to this file to me first before submitting them to xemacs-patches. */ #ifndef INCLUDED_postgresql_h_ #define INCLUDED_postgresql_h_ 1 #define message message_ /* Yuck */ #include LIBPQ_FE_H_FILE /* main PostgreSQL header file */ #undef message #define BLCKSZ 8192 /* size of a default Postgres disk block */ /* This file contains the GCC bug workaround code for the private LRECORD types. */ /* PGconn is an opaque object and we need to be able to store them in Lisp code because libpq supports multiple connections. */ struct Lisp_PGconn { struct LCRECORD_HEADER header; PGconn *pgconn; }; typedef struct Lisp_PGconn Lisp_PGconn; DECLARE_LRECORD (pgconn, Lisp_PGconn); #define XPGCONN(x) XRECORD (x, pgconn, Lisp_PGconn) #define wrap_pgconn(p) wrap_record (p, pgconn) #define PGCONNP(x) RECORDP (x, pgconn) #define CHECK_PGCONN(x) CHECK_RECORD (x, pgconn) #define CONCHECK_PGCONN(x) CONCHECK_RECORD (x, pgconn) /****/ /* PGresult is an opaque object and we need to be able to store them in Lisp code. */ struct Lisp_PGresult { struct LCRECORD_HEADER header; PGresult *pgresult; }; typedef struct Lisp_PGresult Lisp_PGresult; DECLARE_LRECORD (pgresult, Lisp_PGresult); #define XPGRESULT(x) XRECORD (x, pgresult, Lisp_PGresult) #define wrap_pgresult(p) wrap_record (p, pgresult) #define PGRESULTP(x) RECORDP (x, pgresult) #define CHECK_PGRESULT(x) CHECK_RECORD (x, pgresult) #define CONCHECK_PGRESULT(x) CONCHECK_RECORD (x, pgresult) #endif /* INCLUDED_postgresql_h_ */