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os0file.h InnoDB should now run with the same binary on Win95 and NT: checks OS version

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srv0start.c	InnoDB should now run with the same binary on Win95 and NT: checks OS version


innobase/srv/srv0start.c:
  InnoDB should now run with the same binary on Win95 and NT: checks OS version
innobase/include/os0file.h:
  InnoDB should now run with the same binary on Win95 and NT: checks OS version
This commit is contained in:
unknown
2001-05-20 20:24:02 +03:00
parent 55cbf7f958
commit 23e19c9047
2 changed files with 23 additions and 5 deletions
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12
innobase/include/os0file.h
View File

@ -100,7 +100,17 @@ log. */
requests in a batch, and only after that
wake the i/o-handler thread; this has
effect only in simulated aio */
#define OS_WIN31 1
#define OS_WIN95 2
#define OS_WINNT 3
/***************************************************************************
Gets the operating system version. Currently works only on Windows. */
ulint
os_get_os_version(void);
/*===================*/
/* out: OS_WIN95, OS_WIN31, OS_WINNT (2000 == NT) */
/********************************************************************
Opens an existing file or creates a new. */

16
innobase/srv/srv0start.c
View File

@ -549,11 +549,19 @@ innobase_start_or_create_for_mysql(void)
srv_n_file_io_threads = 4;
#endif
#ifdef WIN_ASYNC_IO
/* On NT always use aio */
os_aio_use_native_aio = TRUE;
#endif
#ifdef __WIN__
if (os_get_os_version() == OS_WIN95
|| os_get_os_version() == OS_WIN31) {
/* On Win 95, 98, ME, and Win32 subsystem for Windows 3.1 use
simulated aio */
os_aio_use_native_aio = FALSE;
srv_n_file_io_threads = 4;
} else {
/* On NT and Win 2000 always use aio */
os_aio_use_native_aio = TRUE;
}
#endif
if (!os_aio_use_native_aio) {
os_aio_init(4 * SRV_N_PENDING_IOS_PER_THREAD
* srv_n_file_io_threads,