From 55dda0abcf9d36bf5c3e21c8423b7c00a1125e27 Mon Sep 17 00:00:00 2001 From: Martin Kelly Date: Thu, 17 May 2018 17:14:46 -0700 Subject: 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 Signed-off-by: Jonathan Cameron --- tools/iio/iio_generic_buffer.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'tools/iio') 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 Do n conversions\n" + " -c 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 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, -- cgit v1.2.3-59-g8ed1b