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after select(), if both ioctl() and read() return a 0 count, assume that we lost the connection and close the serial port

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svn path=/trunk/externals/iem/comport/; revision=16051
This commit is contained in:
Hans-Christoph Steiner 2012-03-07 04:59:28 +00:00
parent b1717b4f77
commit 34376be955
1 changed files with 12 additions and 1 deletions
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13
comport/comport.c
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@ -1078,7 +1078,18 @@ static void comport_tick(t_comport *x)
outlet_float(x->x_data_outlet, (t_float) x->x_inbuf[i]); outlet_float(x->x_data_outlet, (t_float) x->x_inbuf[i]);
} }
} }
else whicherr = errno; else if (err == 0 && count == 0)
{
/* if both ioctl() and read() return a 0 count, assume
* that we lost the connection to the serial port.
* otherwise there is a race condition when the serial
* port gets interrupted, like if the USB gets yanked
* out or a bluetooth connection drops */
pd_error(x, "Lost connection to serial device, closing!");
comport_close(x);
}
else
whicherr = errno;
} }
#endif /* _WIN32 */ #endif /* _WIN32 */
if(err < 0) if(err < 0)