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Variable refresh rate as argument to spy lite #520

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Merged
jbendes merged 1 commit into from
Aug 6, 2025
Merged

Variable refresh rate as argument to spy lite #520

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9 changes: 6 additions & 3 deletions tools/cpp/spy-lite/main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -405,18 +405,20 @@ struct Args
vector<string> channels;
bool debug = false;
bool showBandwidth = false;
float hz = 20;

bool parse(int argc, char *argv[])
{
// set some defaults
const char *optstring = "hu:p:c:bd";
const char *optstring = "hu:p:c:bdf:";
struct option long_opts[] = {
{ "help", no_argument, 0, 'h' },
{ "zcm-url", required_argument, 0, 'u' },
{ "type-path", required_argument, 0, 'p' },
{ "channel", required_argument, 0, 'c' },
{ "bandwidth", no_argument, 0, 'b' },
{ "debug", no_argument, 0, 'd' },
{ "frequency", required_argument, 0, 'f' },
{ 0, 0, 0, 0 }
};

Expand All @@ -428,6 +430,7 @@ struct Args
case 'c': channels.push_back(optarg); break;
case 'b': showBandwidth = true; break;
case 'd': debug = true; break;
case 'f': hz = atof(optarg); break;
case 'h': default: usage(); return false;
};
}
Expand Down Expand Up @@ -466,6 +469,7 @@ struct Args
" -c, --channel=CHANNEL Channel to subscribe to. Can be specified more than once\n"
" -b, --bandwidth Calculate and show bandwidth of each channel\n"
" -d, --debug Run a dry run to ensure proper spy setup\n"
" -f, --frequency Specify the screen refresh frequency in Hz\n"
"\n");
}
};
Expand Down Expand Up @@ -560,8 +564,7 @@ static void printHeader(const char* title, bool showBandwidth)

void printThreadFunc(SpyInfo *spy, Args *args)
{
static constexpr float hz = 20.0;
static constexpr u64 period = 1000000 / hz;
static u64 period = 1000000 / args->hz;

DEBUG(1, "INFO: %s: Starting\n", "print_thread");
while (!quit) {
Expand Down
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