Merge mysql.com:/M50/bug-15861-5.0 into mysql.com:/M50/mysql-5.0

   along with this program; if not, write to the Free Software

   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

#if !defined(_my_no_pthread_h) && !defined(THREAD)

#define _my_no_pthread_h

/*

  This block is to access some thread-related type definitions

  even in builds which do not need thread functions,

  as some variables (based on these types) are declared

  even in non-threaded builds.

  Case in point: 'mf_keycache.c'

*/

#if defined(__WIN__) || defined(OS2)

#elif defined(HAVE_UNIXWARE7_THREADS)

/* #include <thread.h>   Currently, not relevant. Enable if needed. */

#else /* Normal threads */

#include <pthread.h>

#endif /* defined(__WIN__) */

/*

  This undefs some pthread mutex locks when one isn't using threads

  to make thread safe code, that should also work in single thread

  environment, easier to use.

*/

#if !defined(_my_no_pthread_h) && !defined(THREAD)

#define _my_no_pthread_h

#define pthread_mutex_init(A,B)

#define pthread_mutex_lock(A)

#define pthread_mutex_unlock(A)

#define rw_wrlock(A)

#define rw_unlock(A)

#define rwlock_destroy(A)

#endif