diff options
| author | Martin Kelly <mkelly@xevo.com> | 2018-05-17 17:14:46 -0700 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2018-05-20 14:55:58 +0100 |
| commit | 55dda0abcf9d36bf5c3e21c8423b7c00a1125e27 (patch) | |
| tree | 622ec5263913368c19f71172ff984cb8f41f3b01 | |
| parent | 71b52d2c746b2915d615e29f5873e1ee5f3c5f52 (diff) | |
| download | linux-55dda0abcf9d36bf5c3e21c8423b7c00a1125e27.tar.bz2 | |
tools: iio: iio_generic_buffer: allow continuous looping
Sometimes it's useful to stream samples forever, such as when
stress-testing a driver overnight to check for memory leaks or other
issues. When the program receives a signal, it will gracefully cleanup,
so it is still safe to terminate at any time.
Add support for specifying a negative -c option, meaning that we should
loop forever. To do so, we need to use a long long (instead of just
long) for num_loops so that current code specifying num_loops greater
than UNSIGNED_LONG_MAX doesn't break.
Signed-off-by: Martin Kelly <mkelly@xevo.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| -rw-r--r-- | tools/iio/iio_generic_buffer.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/tools/iio/iio_generic_buffer.c b/tools/iio/iio_generic_buffer.c index aa765c11992b..3040830d7797 100644 --- a/tools/iio/iio_generic_buffer.c +++ b/tools/iio/iio_generic_buffer.c @@ -248,7 +248,7 @@ void print_usage(void) "Capture, convert and output data from IIO device buffer\n" " -a Auto-activate all available channels\n" " -A Force-activate ALL channels\n" - " -c <n> Do n conversions\n" + " -c <n> Do n conversions, or loop forever if n < 0\n" " -e Disable wait for event (new data)\n" " -g Use trigger-less mode\n" " -l <n> Set buffer length to n samples\n" @@ -330,12 +330,12 @@ static const struct option longopts[] = { int main(int argc, char **argv) { - unsigned long num_loops = 2; + unsigned long long num_loops = 2; unsigned long timedelay = 1000000; unsigned long buf_len = 128; ssize_t i; - unsigned long j; + unsigned long long j; unsigned long toread; int ret, c; int fp = -1; @@ -369,7 +369,7 @@ int main(int argc, char **argv) break; case 'c': errno = 0; - num_loops = strtoul(optarg, &dummy, 10); + num_loops = strtoll(optarg, &dummy, 10); if (errno) { ret = -errno; goto error; @@ -637,7 +637,7 @@ int main(int argc, char **argv) goto error; } - for (j = 0; j < num_loops; j++) { + for (j = 0; j < num_loops || num_loops < 0; j++) { if (!noevents) { struct pollfd pfd = { .fd = fp, |