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Comment:Use fdatasync() only on linux, unless -Dfdatasync=fdatasync is set at compilation time. (CVS 6383)
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SHA1: cbf2ca4cc41f1f710635b863db6e98074bd5e8bc
User & Date: drh 2009-03-25 01:06:02
Context
2009-03-25
14:24
When a VFS.xOpen fails, make sure the pMethods pointer is zeroed on the sqlite3_file object so that subsequent xClose() operations against that same file handler are no-ops. Bug in the test_async.c module only - not in the core library. Ticket #3744. (CVS 6384) check-in: c32b4541 user: drh tags: trunk
01:06
Use fdatasync() only on linux, unless -Dfdatasync=fdatasync is set at compilation time. (CVS 6383) check-in: cbf2ca4c user: drh tags: trunk
2009-03-24
18:42
Change OS_UNIX to SQLITE_OS_UNIX in test_thread.c. Modify notify2.test to print out its timings in addition to reporting success or failure. (CVS 6382) check-in: 940d72d2 user: drh tags: trunk
Changes
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Changes to src/os_unix.c.

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**   *  Definitions of sqlite3_io_methods objects for all locking
**      methods plus "finder" functions for each locking method.
**   *  sqlite3_vfs method implementations.
**   *  Locking primitives for the proxy uber-locking-method. (MacOSX only)
**   *  Definitions of sqlite3_vfs objects for all locking methods
**      plus implementations of sqlite3_os_init() and sqlite3_os_end().
**
** $Id: os_unix.c,v 1.244 2009/03/21 14:56:52 drh Exp $
*/
#include "sqliteInt.h"
#if SQLITE_OS_UNIX              /* This file is used on unix only */

/*
** There are various methods for file locking used for concurrency
** control:
................................................................................
** that syncs and fullsyncs are occurring at the right times.
*/
int sqlite3_sync_count = 0;
int sqlite3_fullsync_count = 0;
#endif

/*
** We assume that most systems these days support fdatasync().  Those
** machines that do not can define -Dfdatasync=fsync.


*/
#if 0

# define fdatasync fsync
#endif

/*
** Define HAVE_FULLFSYNC to 0 or 1 depending on whether or not
** the F_FULLFSYNC macro is defined.  F_FULLFSYNC is currently
** only available on Mac OS X.  But that could change.







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**   *  Definitions of sqlite3_io_methods objects for all locking
**      methods plus "finder" functions for each locking method.
**   *  sqlite3_vfs method implementations.
**   *  Locking primitives for the proxy uber-locking-method. (MacOSX only)
**   *  Definitions of sqlite3_vfs objects for all locking methods
**      plus implementations of sqlite3_os_init() and sqlite3_os_end().
**
** $Id: os_unix.c,v 1.245 2009/03/25 01:06:02 drh Exp $
*/
#include "sqliteInt.h"
#if SQLITE_OS_UNIX              /* This file is used on unix only */

/*
** There are various methods for file locking used for concurrency
** control:
................................................................................
** that syncs and fullsyncs are occurring at the right times.
*/
int sqlite3_sync_count = 0;
int sqlite3_fullsync_count = 0;
#endif

/*
** We do not trust systems to provide a working fdatasync().  Some do.
** Others do no.  To be safe, we will stick with the (slower) fsync().
** If you know that your system does support fdatasync() correctly,
** then simply compile with -Dfdatasync=fdatasync
*/

#if !defined(fdatasync) && !defined(__linux__)
# define fdatasync fsync
#endif

/*
** Define HAVE_FULLFSYNC to 0 or 1 depending on whether or not
** the F_FULLFSYNC macro is defined.  F_FULLFSYNC is currently
** only available on Mac OS X.  But that could change.