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/* Receive a message from a message queue with a timeout. Linux version.
Copyright (C) 2017-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C 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; either
version 2.1 of the License, or (at your option) any later version.
The GNU C 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 the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <mqueue.h>
#include <sysdep-cancel.h>
/* Receive the oldest from highest priority messages in message queue
MQDES, stop waiting if ABS_TIMEOUT expires. */
ssize_t
__mq_timedreceive_time64 (mqd_t mqdes, char *__restrict msg_ptr, size_t msg_len,
unsigned int *__restrict msg_prio,
const struct __timespec64 *__restrict abs_timeout)
{
#ifndef __NR_mq_timedreceive_time64
# define __NR_mq_timedreceive_time64 __NR_mq_timedreceive
#endif
int ret = SYSCALL_CANCEL (mq_timedreceive_time64, mqdes, msg_ptr, msg_len,
msg_prio, abs_timeout);
#ifndef __ASSUME_TIME64_SYSCALLS
if (ret == 0 || errno != ENOSYS)
return ret;
struct timespec ts32;
if (abs_timeout != NULL)
{
if (! in_time_t_range (abs_timeout->tv_sec))
{
__set_errno (EOVERFLOW);
return -1;
}
ts32 = valid_timespec64_to_timespec (*abs_timeout);
}
ret = SYSCALL_CANCEL (mq_timedreceive, mqdes, msg_ptr, msg_len, msg_prio,
abs_timeout != NULL ? &ts32 : NULL);
#endif
return ret;
}
#if __TIMESIZE != 64
librt_hidden_def (__mq_timedreceive_time64)
ssize_t
__mq_timedreceive (mqd_t mqdes, char *__restrict msg_ptr, size_t msg_len,
unsigned int *__restrict msg_prio,
const struct timespec *__restrict abs_timeout)
{
struct __timespec64 ts64;
if (abs_timeout != NULL)
ts64 = valid_timespec_to_timespec64 (*abs_timeout);
return __mq_timedreceive_time64 (mqdes, msg_ptr, msg_len, msg_prio,
abs_timeout != NULL ? &ts64 : NULL);
}
#endif
hidden_def (__mq_timedreceive)
weak_alias (__mq_timedreceive, mq_timedreceive)
hidden_weak (mq_timedreceive)
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