Import changeset

1 files changed, 141 insertions, 0 deletions

diff --git a/mysys/my_wincond.c b/mysys/my_wincond.c
new file mode 100644
index 00000000000..3643d0ec0a6
--- /dev/null
+++ b/mysys/my_wincond.c
@@ -0,0 +1,141 @@
+/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+   
+   This library 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
+   Library General Public License for more details.
+   
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+   MA 02111-1307, USA */
+
+/*****************************************************************************
+** The following is a simple implementation of posix conditions
+*****************************************************************************/
+
+#include "mysys_priv.h"
+#if defined(THREAD) && defined(__WIN__)
+#include <m_string.h>
+#undef getpid
+#include <process.h>
+#include <sys/timeb.h>
+
+int pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *attr)
+{
+  cond->waiting=0;
+  cond->semaphore=CreateSemaphore(NULL,0,0x7FFFFFFF,NullS);
+  if (!cond->semaphore)
+    return ENOMEM;
+  return 0;
+}
+
+int pthread_cond_destroy(pthread_cond_t *cond)
+{
+	return CloseHandle(cond->semaphore) ? 0 : EINVAL;
+}
+
+
+int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
+{
+  InterlockedIncrement(&cond->waiting);
+  LeaveCriticalSection(mutex);
+  WaitForSingleObject(cond->semaphore,INFINITE);
+  InterlockedDecrement(&cond->waiting);
+  EnterCriticalSection(mutex);
+  return 0 ;
+}
+
+int pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex,
+                           struct timespec *abstime)
+{
+  struct _timeb curtime;
+  int result;
+  long timeout;
+  _ftime(&curtime);
+  timeout= ((long) (abstime->tv_sec - curtime.time)*1000L +
+		    (long)((abstime->tv_nsec/1000) - curtime.millitm)/1000L);
+  if (timeout < 0)				/* Some safety */
+    timeout = 0L;
+  InterlockedIncrement(&cond->waiting);
+  LeaveCriticalSection(mutex);
+  result=WaitForSingleObject(cond->semaphore,timeout);
+  InterlockedDecrement(&cond->waiting);
+  EnterCriticalSection(mutex);
+
+  return result == WAIT_TIMEOUT ? ETIMEDOUT : 0;
+}
+
+
+int pthread_cond_signal(pthread_cond_t *cond)
+{
+  long prev_count;
+  if (cond->waiting)
+    ReleaseSemaphore(cond->semaphore,1,&prev_count);
+  return 0;
+}
+
+
+int pthread_cond_broadcast(pthread_cond_t *cond)
+{
+  long prev_count;
+  if (cond->waiting)
+    ReleaseSemaphore(cond->semaphore,cond->waiting,&prev_count);
+  return 0 ;
+}
+
+
+int pthread_attr_init(pthread_attr_t *connect_att)
+{
+  connect_att->dwStackSize	= 0;
+  connect_att->dwCreatingFlag	= 0;
+  connect_att->priority		= 0;
+  return 0;
+}
+
+int pthread_attr_setstacksize(pthread_attr_t *connect_att,DWORD stack)
+{
+  connect_att->dwStackSize=stack;
+  return 0;
+}
+
+int pthread_attr_setprio(pthread_attr_t *connect_att,int priority)
+{
+  connect_att->priority=priority;
+  return 0;
+}
+
+int pthread_attr_destroy(pthread_attr_t *connect_att)
+{
+  bzero((gptr) connect_att,sizeof(*connect_att));
+  return 0;
+}
+
+/****************************************************************************
+** Fix localtime_r() to be a bit safer
+****************************************************************************/
+
+struct tm *localtime_r(const time_t *timep,struct tm *tmp)
+{
+  if (*timep == (time_t) -1)			/* This will crash win32 */
+  {
+    bzero(tmp,sizeof(*tmp));
+  }
+  else
+  {
+    struct tm *res=localtime(timep);
+    if (!res)                                   /* Wrong date */
+    {
+      bzero(tmp,sizeof(*tmp));                  /* Keep things safe */
+      return 0;
+    }
+    *tmp= *res;
+  }
+  return tmp;
+}
+#endif /* __WIN__ */