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adds a watchdog timer to async callback, abort if async events stop arriving

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Christian W. Zuckschwerdt
2017-05-10 19:54:45 +02:00
committed by Benjamin Larsson
parent 2acd8f9253
commit 85c4e76faa
1 changed files with 11 additions and 0 deletions
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11
src/rtl_433.c
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@@ -599,6 +599,10 @@ static void rtlsdr_callback(unsigned char *iq_buf, uint32_t len, void *ctx) {
int i;
char time_str[LOCAL_TIME_BUFLEN];
#ifndef _WIN32
alarm(1); // require callback to run at least every second, abort otherwise
#endif
if (do_exit || do_exit_async)
return;
@@ -1268,8 +1272,15 @@ int main(int argc, char **argv) {
fprintf(stderr, "WARNING: Failed to set center freq.\n");
else
fprintf(stderr, "Tuned to %u Hz.\n", rtlsdr_get_center_freq(dev));
#ifndef _WIN32
signal(SIGALRM, sighandler);
alarm(1); // require callback to run at least every second, abort otherwise
#endif
r = rtlsdr_read_async(dev, rtlsdr_callback, (void *) demod,
DEFAULT_ASYNC_BUF_NUMBER, out_block_size);
#ifndef _WIN32
alarm(0); // cancel the watchdog timer
#endif
do_exit_async = 0;
frequency_current++;
if (frequency_current > frequencies - 1) frequency_current = 0;