initial commit

tdutils/td/utils/Timer.cpp

@@ -0,0 +1,62 @@
+/*
+    This file is part of TON Blockchain Library.
+
+    TON Blockchain Library is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 2 of the License, or
+    (at your option) any later version.
+
+    TON Blockchain Library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with TON Blockchain Library.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright 2017-2019 Telegram Systems LLP
+*/
+#include "td/utils/Timer.h"
+
+#include "td/utils/format.h"
+#include "td/utils/logging.h"
+//#include  "td/utils/Slice.h"  // TODO move StringBuilder implementation to cpp, remove header
+#include "td/utils/Time.h"
+
+namespace td {
+
+Timer::Timer() : start_time_(Time::now()) {
+}
+
+double Timer::elapsed() const {
+  return Time::now() - start_time_;
+}
+
+StringBuilder &operator<<(StringBuilder &string_builder, const Timer &timer) {
+  return string_builder << "in " << Time::now() - timer.start_time_;
+}
+
+PerfWarningTimer::PerfWarningTimer(string name, double max_duration)
+    : name_(std::move(name)), start_at_(Time::now()), max_duration_(max_duration) {
+}
+
+PerfWarningTimer::PerfWarningTimer(PerfWarningTimer &&other)
+    : name_(std::move(other.name_)), start_at_(other.start_at_), max_duration_(other.max_duration_) {
+  other.start_at_ = 0;
+}
+
+PerfWarningTimer::~PerfWarningTimer() {
+  reset();
+}
+
+void PerfWarningTimer::reset() {
+  if (start_at_ == 0) {
+    return;
+  }
+  double duration = Time::now() - start_at_;
+  LOG_IF(WARNING, duration > max_duration_)
+      << "SLOW: " << tag("name", name_) << tag("duration", format::as_time(duration));
+  start_at_ = 0;
+}
+
+}  // namespace td