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-rw-r--r--mysys/my_wincond.c114
1 files changed, 114 insertions, 0 deletions
diff --git a/mysys/my_wincond.c b/mysys/my_wincond.c
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+++ b/mysys/my_wincond.c
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+/* Copyright (c) 2000, 2014, Oracle and/or its affiliates.
+ Copyright (c) 2011, 2016, MariaDB
+
+ 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 02110-1335 USA */
+
+/*****************************************************************************
+** The following is a simple implementation of posix conditions
+*****************************************************************************/
+#if defined(_WIN32)
+
+#undef SAFE_MUTEX /* Avoid safe_mutex redefinitions */
+#include "mysys_priv.h"
+#include <m_string.h>
+#include <process.h>
+#include <sys/timeb.h>
+
+
+/**
+ Convert abstime to milliseconds
+*/
+
+static DWORD get_milliseconds(const struct timespec *abstime)
+{
+ struct timespec current_time;
+ long long ms;
+
+ if (abstime == NULL)
+ return INFINITE;
+
+ set_timespec_nsec(current_time, 0);
+ ms= (abstime->tv_sec - current_time.tv_sec)*1000LL +
+ (abstime->tv_nsec - current_time.tv_nsec)/1000000LL;
+ if(ms < 0 )
+ ms= 0;
+ if(ms > UINT_MAX)
+ ms= INFINITE;
+ return (DWORD)ms;
+}
+
+int pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *attr)
+{
+ InitializeConditionVariable(cond);
+ return 0;
+}
+
+
+int pthread_cond_destroy(pthread_cond_t *cond)
+{
+ return 0;
+}
+
+
+int pthread_cond_broadcast(pthread_cond_t *cond)
+{
+ WakeAllConditionVariable(cond);
+ return 0;
+}
+
+
+int pthread_cond_signal(pthread_cond_t *cond)
+{
+ WakeConditionVariable(cond);
+ return 0;
+}
+
+
+int pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex,
+ const struct timespec *abstime)
+{
+ DWORD timeout= get_milliseconds(abstime);
+ if (!SleepConditionVariableCS(cond, mutex, timeout))
+ return ETIMEDOUT;
+ return 0;
+}
+
+
+int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
+{
+ return pthread_cond_timedwait(cond, mutex, NULL);
+}
+
+
+int pthread_attr_init(pthread_attr_t *connect_att)
+{
+ connect_att->dwStackSize = 0;
+ connect_att->dwCreatingFlag = 0;
+ return 0;
+}
+
+int pthread_attr_setstacksize(pthread_attr_t *connect_att,size_t stack)
+{
+ DBUG_ASSERT(stack < UINT_MAX);
+ connect_att->dwStackSize=(DWORD)stack;
+ return 0;
+}
+
+int pthread_attr_destroy(pthread_attr_t *connect_att)
+{
+ bzero((uchar*) connect_att,sizeof(*connect_att));
+ return 0;
+}
+
+#endif /* __WIN__ */