81 lines
2.6 KiB
C++
81 lines
2.6 KiB
C++
/*
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* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef SHARE_VM_RUNTIME_TIMERTRACE_HPP
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#define SHARE_VM_RUNTIME_TIMERTRACE_HPP
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#include "logging/log.hpp"
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#include "utilities/globalDefinitions.hpp"
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// TraceTime is used for tracing the execution time of a block
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// Usage:
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// {
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// TraceTime t("some timer", TIMERTRACE_LOG(Info, startuptime, tagX...));
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// some_code();
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// }
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//
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typedef void (*TraceTimerLogPrintFunc)(const char*, ...);
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// We need to explicit take address of LogImpl<>write<> and static cast
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// due to MSVC is not compliant with templates two-phase lookup
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#define TRACETIME_LOG(TT_LEVEL, ...) \
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log_is_enabled(TT_LEVEL, __VA_ARGS__) ? static_cast<TraceTimerLogPrintFunc>(&LogImpl<LOG_TAGS(__VA_ARGS__)>::write<LogLevel::TT_LEVEL>) : (TraceTimerLogPrintFunc)NULL
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class TraceTime: public StackObj {
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private:
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bool _active; // do timing
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bool _verbose; // report every timing
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elapsedTimer _t; // timer
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elapsedTimer* _accum; // accumulator
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const char* _title; // name of timer
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TraceTimerLogPrintFunc _print;
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public:
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// Constructors
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TraceTime(const char* title,
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bool doit = true);
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TraceTime(const char* title,
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elapsedTimer* accumulator,
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bool doit = true,
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bool verbose = false);
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TraceTime(const char* title,
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TraceTimerLogPrintFunc ttlpf);
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~TraceTime();
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// Accessors
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void set_verbose(bool verbose) { _verbose = verbose; }
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bool verbose() const { return _verbose; }
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// Activation
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void suspend() { if (_active) _t.stop(); }
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void resume() { if (_active) _t.start(); }
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};
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#endif // SHARE_VM_RUNTIME_TIMERTRACE_HPP
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