perf.c

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#include <px4_platform_common/px4_config.h>
#include <px4_platform_common/module.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>

#include <perf/perf_counter.h>

__EXPORT int perf_main(int argc, char *argv[]);


static void print_usage(void)
{
    PRINT_MODULE_DESCRIPTION("Tool to print performance counters");

    PRINT_MODULE_USAGE_NAME_SIMPLE("perf", "command");
    PRINT_MODULE_USAGE_COMMAND_DESCR("reset", "Reset all counters");
    PRINT_MODULE_USAGE_COMMAND_DESCR("latency", "Print HRT timer latency histogram");

    PRINT_MODULE_USAGE_PARAM_COMMENT("Prints all performance counters if no arguments given");
}


int perf_main(int argc, char *argv[])
{
    if (argc > 1) {
        if (strcmp(argv[1], "reset") == 0) {
            perf_reset_all();
            return 0;

        } else if (strcmp(argv[1], "latency") == 0) {
            perf_print_latency(1 /* stdout */);
            fflush(stdout);
            return 0;
        }

        print_usage();
        return -1;
    }

    perf_print_all(1 /* stdout */);
    fflush(stdout);
    return 0;
}