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Handle EINTR from tcdrain() in sp_drain().

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This commit is contained in:
Martin Ling
2013-11-27 14:31:54 +00:00
parent b87deb7c70
commit 2c827b2188
2 changed files with 23 additions and 6 deletions
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22
serialport.c
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@@ -799,13 +799,23 @@ enum sp_return sp_drain(struct sp_port *port)
/* Returns non-zero upon success, 0 upon failure. */
if (FlushFileBuffers(port->hdl) == 0)
RETURN_FAIL("FlushFileBuffers() failed");
#else
/* Returns 0 upon success, -1 upon failure. */
if (tcdrain(port->fd) < 0)
RETURN_FAIL("tcdrain() failed");
#endif
RETURN_OK();
#else
int result;
while (1) {
result = tcdrain(port->fd);
if (result < 0) {
if (errno == EINTR) {
DEBUG("tcdrain() was interrupted");
continue;
} else {
RETURN_FAIL("tcdrain() failed");
}
} else {
RETURN_OK();
}
}
#endif
}
enum sp_return sp_blocking_write(struct sp_port *port, const void *buf, size_t count, unsigned int timeout)