text: /****************************************************************************
   *
   *  Copyright (C) 2012-2019 PX4 Development Team. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   * 3. Neither the name PX4 nor the names of its contributors may be
   *    used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
   * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
   * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
   * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
   * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
   * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   *
   ****************************************************************************/
  
  /**
   * @file test_perf.c
   * Tests related to the performance counter.
   */
  
  #include <px4_platform_common/px4_config.h>
  #include <px4_platform_common/posix.h>
  
  #include <perf/perf_counter.h>
  
  #include "tests_main.h"
  
  int
  test_perf(int argc, char *argv[])
  {
  	perf_counter_t cc = perf_alloc(PC_COUNT, "test_count");
  	perf_counter_t ec = perf_alloc(PC_ELAPSED, "test_elapsed");
  
  	if ((cc == NULL) || (ec == NULL)) {
  		printf("perf: counter alloc failed\n");
  		return 1;
  	}
  
  	perf_begin(ec);
  	perf_count(cc);
  	perf_count(cc);
  	perf_count(cc);
  	perf_count(cc);
  	printf("perf: expect count of 4\n");
  	perf_print_counter(cc);
  	perf_end(ec);
  	printf("perf: expect count of 1\n");
  	perf_print_counter(ec);
  
  	perf_free(cc);
  	perf_free(ec);
  
  	return OK;
  }
  