| /* |
| * |
| * Copyright 2015, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * 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. |
| * * Neither the name of Google Inc. 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. |
| * |
| */ |
| |
| #include "test/cpp/qps/timer.h" |
| |
| #include <sys/time.h> |
| #include <sys/resource.h> |
| #include <grpc/support/time.h> |
| #include <grpc++/config.h> |
| |
| Timer::Timer() : start_(Sample()) {} |
| |
| double Timer::Now() { |
| auto ts = gpr_now(GPR_CLOCK_REALTIME); |
| return ts.tv_sec + 1e-9 * ts.tv_nsec; |
| } |
| |
| static double time_double(struct timeval* tv) { |
| return tv->tv_sec + 1e-6 * tv->tv_usec; |
| } |
| |
| Timer::Result Timer::Sample() { |
| struct rusage usage; |
| struct timeval tv; |
| gettimeofday(&tv, nullptr); |
| getrusage(RUSAGE_SELF, &usage); |
| |
| Result r; |
| r.wall = time_double(&tv); |
| r.user = time_double(&usage.ru_utime); |
| r.system = time_double(&usage.ru_stime); |
| return r; |
| } |
| |
| Timer::Result Timer::Mark() { |
| Result s = Sample(); |
| Result r; |
| r.wall = s.wall - start_.wall; |
| r.user = s.user - start_.user; |
| r.system = s.system - start_.system; |
| return r; |
| } |