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#ifndef _UST_WAIT_H
#define _UST_WAIT_H
/*
* Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; version 2.1 of
* the License.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <poll.h>
/*
* Wait until "cond" gets true or timeout (in ms).
*/
#define wait_cond_interruptible_timeout(_cond, _timeout) \
({ \
int __ret = 0, __pollret; \
int __timeout = _timeout; \
\
for (;;) { \
if (_cond) \
break; \
if (__timeout <= 0) { \
__ret = -ETIMEDOUT; \
break; \
} \
__pollret = poll(NULL, 0, 10); /* wait 10ms */ \
if (__pollret < 0) { \
__ret = -errno; \
break; \
} \
__timeout -= 10; \
} \
__ret; \
})
#endif /* _UST_WAIT_H */
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