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Diffstat (limited to 'nuttx/net/net_timeo.c')
-rw-r--r-- | nuttx/net/net_timeo.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/nuttx/net/net_timeo.c b/nuttx/net/net_timeo.c new file mode 100644 index 000000000..c593c45c7 --- /dev/null +++ b/nuttx/net/net_timeo.c @@ -0,0 +1,85 @@ +/**************************************************************************** + * net/net_timeo.c + * + * Copyright (C) 2007-2009, 2011-2012 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#if defined(CONFIG_NET) && defined(CONFIG_NET_SOCKOPTS) && !defined(CONFIG_DISABLE_CLOCK) + +#include <stdint.h> +#include <debug.h> + +#include <nuttx/clock.h> + +#include "net_internal.h" + +/**************************************************************************** + * Global Functions + ****************************************************************************/ + +/**************************************************************************** + * Function: net_timeo + * + * Description: + * Check if a timeout has elapsed. This can be called from a socket poll + * function to determine if a timeout has occurred. + * + * Parameters: + * start_time Timeout start time in system clock ticks + * timeout Timeout value in deciseconds. + * + * Returned Value: + * 0 (FALSE) if not timeout; 1 (TRUE) if timeout + * + * Assumptions: + * + ****************************************************************************/ + +int net_timeo(uint32_t start_time, socktimeo_t timeo) +{ + uint32_t timeo_ticks = DSEC2TICK(timeo); + uint32_t elapsed = clock_systimer() - start_time; + + if (elapsed >= timeo_ticks) + { + return TRUE; + } + return FALSE; +} + +#endif /* CONFIG_NET && CONFIG_NET_SOCKOPTS && !CONFIG_DISABLE_CLOCK */ + |