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Diffstat (limited to 'test/cpp/qps/timer.cc')
-rw-r--r-- | test/cpp/qps/timer.cc | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/test/cpp/qps/timer.cc b/test/cpp/qps/timer.cc new file mode 100644 index 0000000000..3c1342041c --- /dev/null +++ b/test/cpp/qps/timer.cc @@ -0,0 +1,71 @@ +/* + * + * 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> + +Timer::Timer() : start_(Sample()) {} + +double Timer::Now() { + auto ts = gpr_now(); + 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; +} |