mariadb/innobase/include/os0sync.ic

48 lines
1.4 KiB
Text
Raw Normal View History

/******************************************************
The interface to the operating system synchronization primitives.
(c) 1995 Innobase Oy
Created 9/6/1995 Heikki Tuuri
*******************************************************/
#ifdef __WIN__
#include <winbase.h>
#endif
/**************************************************************
Many files: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/btr/btr0cur.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/dict/dict0crea.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/dict/dict0dict.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/dict/dict0load.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/dict/dict0mem.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/btr0btr.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/dict0mem.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/ibuf0ibuf.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/os0file.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/os0sync.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/row0mysql.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/row0upd.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/sync0sync.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/trx0sys.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/trx0trx.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/ibuf0ibuf.ic: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/os0sync.ic: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/sync0sync.ic: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/trx0sys.ic: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/lock/lock0lock.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/pars/pars0opt.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/que/que0que.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/row/row0ins.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/row/row0mysql.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/row/row0sel.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/row/row0upd.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/srv/srv0srv.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/sync/sync0sync.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/trx/trx0sys.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/trx/trx0trx.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
2002-04-18 10:40:32 +03:00
Acquires ownership of a fast mutex. Currently in Windows this is the same
as os_fast_mutex_lock! */
UNIV_INLINE
ulint
os_fast_mutex_trylock(
/*==================*/
/* out: 0 if success, != 0 if
was reserved by another
thread */
os_fast_mutex_t* fast_mutex) /* in: mutex to acquire */
{
#ifdef __WIN__
Many files: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/btr/btr0cur.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/dict/dict0crea.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/dict/dict0dict.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/dict/dict0load.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/dict/dict0mem.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/btr0btr.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/dict0mem.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/ibuf0ibuf.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/os0file.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/os0sync.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/row0mysql.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/row0upd.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/sync0sync.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/trx0sys.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/trx0trx.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/ibuf0ibuf.ic: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/os0sync.ic: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/sync0sync.ic: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/trx0sys.ic: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/lock/lock0lock.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/pars/pars0opt.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/que/que0que.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/row/row0ins.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/row/row0mysql.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/row/row0sel.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/row/row0upd.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/srv/srv0srv.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/sync/sync0sync.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/trx/trx0sys.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/trx/trx0trx.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
2002-04-18 10:40:32 +03:00
EnterCriticalSection(fast_mutex);
Many files: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/btr/btr0cur.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/dict/dict0crea.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/dict/dict0dict.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/dict/dict0load.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/dict/dict0mem.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/btr0btr.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/dict0mem.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/ibuf0ibuf.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/os0file.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/os0sync.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/row0mysql.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/row0upd.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/sync0sync.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/trx0sys.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/trx0trx.h: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/ibuf0ibuf.ic: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/os0sync.ic: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/sync0sync.ic: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/include/trx0sys.ic: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/lock/lock0lock.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/pars/pars0opt.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/que/que0que.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/row/row0ins.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/row/row0mysql.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/row/row0sel.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/row/row0upd.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/srv/srv0srv.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/sync/sync0sync.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/trx/trx0sys.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys innobase/trx/trx0trx.c: Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
2002-04-18 10:40:32 +03:00
return(0);
#else
#if defined(UNIV_HOTBACKUP) && defined(UNIV_HPUX10)
/* Since the hot backup version is standalone, MySQL does not redefine
pthread_mutex_trylock for HP-UX-10.20, and consequently we must invert
the return value here */
return((ulint) (1 - pthread_mutex_trylock(fast_mutex)));
#else
/* NOTE that the MySQL my_pthread.h redefines pthread_mutex_trylock
so that it returns 0 on success. In the operating system
libraries, HP-UX-10.20 follows the old Posix 1003.4a Draft 4 and
returns 1 on success (but MySQL remaps that to 0), while Linux,
FreeBSD, Solaris, AIX, Tru64 Unix, HP-UX-11.0 return 0 on success. */
return((ulint) pthread_mutex_trylock(fast_mutex));
#endif
#endif
}