| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| |
| #ifdef QPID_LATENCY_METRIC |
| |
| #include "LatencyMetric.h" |
| #include "Time.h" |
| #include <iostream> |
| |
| namespace qpid { |
| namespace sys { |
| |
| void LatencyMetricTimestamp::initialize(const LatencyMetricTimestamp& ts) { |
| const_cast<int64_t&>(ts.latency_metric_timestamp) = Duration(now()); |
| } |
| |
| void LatencyMetricTimestamp::clear(const LatencyMetricTimestamp& ts) { |
| const_cast<int64_t&>(ts.latency_metric_timestamp) = 0; |
| } |
| |
| LatencyMetric::LatencyMetric(const char* msg, int64_t skip_) : |
| message(msg), count(0), total(0), skipped(0), skip(skip_) |
| {} |
| |
| LatencyMetric::~LatencyMetric() { report(); } |
| |
| void LatencyMetric::record(const LatencyMetricTimestamp& start) { |
| if (!start.latency_metric_timestamp) return; // Ignore 0 timestamps. |
| if (skip) { |
| if (++skipped < skip) return; |
| else skipped = 0; |
| } |
| ++count; |
| int64_t now_ = Duration(now()); |
| total += now_ - start.latency_metric_timestamp; |
| // Set start time for next leg of the journey |
| const_cast<int64_t&>(start.latency_metric_timestamp) = now_; |
| } |
| |
| void LatencyMetric::report() { |
| using namespace std; |
| if (count) { |
| cout << "LATENCY: " << message << ": " |
| << total / (count * TIME_USEC) << " microseconds" << endl; |
| } |
| else { |
| cout << "LATENCY: " << message << ": no data." << endl; |
| } |
| count = 0; |
| total = 0; |
| } |
| |
| |
| }} // namespace qpid::sys |
| |
| #endif |