| /* Copyright (C) 2000 MySQL AB |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; version 2 of the License. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| 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__) |
| #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. |
| */ |
| #define pthread_mutex_init(A,B) |
| #define pthread_mutex_lock(A) |
| #define pthread_mutex_unlock(A) |
| #define pthread_mutex_destroy(A) |
| #define my_rwlock_init(A,B) |
| #define rw_rdlock(A) |
| #define rw_wrlock(A) |
| #define rw_unlock(A) |
| #define rwlock_destroy(A) |
| |
| typedef int my_pthread_once_t; |
| #define MY_PTHREAD_ONCE_INIT 0 |
| #define MY_PTHREAD_ONCE_DONE 1 |
| |
| #define my_pthread_once(C,F) do { \ |
| if (*(C) != MY_PTHREAD_ONCE_DONE) { F(); *(C)= MY_PTHREAD_ONCE_DONE; } \ |
| } while(0) |
| |
| #endif |