1 /* 2 * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_RUNTIME_TIMERTRACE_HPP 26 #define SHARE_RUNTIME_TIMERTRACE_HPP 27 28 #include "logging/log.hpp" 29 #include "utilities/globalDefinitions.hpp" 30 31 // TraceTime is used for tracing the execution time of a block 32 // Usage: 33 // { 34 // TraceTime t("some timer", TIMERTRACE_LOG(Info, startuptime, tagX...)); 35 // some_code(); 36 // } 37 // 38 39 typedef void (*TraceTimerLogPrintFunc)(const char*, ...); 40 41 // We need to explicit take address of LogImpl<>write<> and static cast 42 // due to MSVC is not compliant with templates two-phase lookup 43 #define TRACETIME_LOG(TT_LEVEL, ...) \ 44 log_is_enabled(TT_LEVEL, __VA_ARGS__) ? static_cast<TraceTimerLogPrintFunc>(&LogImpl<LOG_TAGS(__VA_ARGS__)>::write<LogLevel::TT_LEVEL>) : (TraceTimerLogPrintFunc)NULL 45 46 class TraceTime: public StackObj { 47 private: 48 bool _active; // do timing 49 bool _verbose; // report every timing 50 elapsedTimer _t; // timer 51 elapsedTimer* _accum; // accumulator 52 const char* _title; // name of timer 53 TraceTimerLogPrintFunc _print; 54 55 public: 56 // Constructors 57 TraceTime(const char* title, 58 bool doit = true); 59 60 TraceTime(const char* title, 61 elapsedTimer* accumulator, 62 bool doit = true, 63 bool verbose = false); 64 65 TraceTime(const char* title, 66 TraceTimerLogPrintFunc ttlpf); 67 68 ~TraceTime(); 69 70 // Accessors set_verbose(bool verbose)71 void set_verbose(bool verbose) { _verbose = verbose; } verbose() const72 bool verbose() const { return _verbose; } 73 74 // Activation suspend()75 void suspend() { if (_active) _t.stop(); } resume()76 void resume() { if (_active) _t.start(); } 77 }; 78 79 80 #endif // SHARE_RUNTIME_TIMERTRACE_HPP 81