初版

build/lib/mysql/include/my_no_pthread.h

@@ -0,0 +1,61 @@
+/*
+   Copyright (c) 2000, 2002, 2003, 2006 MySQL AB, 2009 Sun Microsystems, Inc.
+   Use is subject to license terms.
+
+   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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  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