Quelle timerTrace.hpp Sprache: C

/*
* Copyright (c) 2016, 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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#ifndef SHARE_RUNTIME_TIMERTRACE_HPP
#define SHARE_RUNTIME_TIMERTRACE_HPP

#include "logging/log.hpp"
#include "runtime/timer.hpp"
#include "utilities/globalDefinitions.hpp"

// TraceTime is used for tracing the execution time of a block
// Usage:
//  {
//    TraceTime t("some timer", TIMERTRACE_LOG(Info, startuptime, tagX...));
//    some_code();
//  }
//

typedef void (*TraceTimerLogPrintFunc)(const char*, ...);

// We need to explicit take address of LogImpl<>write<> and static cast
// due to MSVC is not compliant with templates two-phase lookup
#define TRACETIME_LOG(TT_LEVEL, ...) \
    log_is_enabled(TT_LEVEL, __VA_ARGS__) ? static_cast<TraceTimerLogPrintFunc>(&LogImpl<LOG_TAGS(__VA_ARGS__)>::write<LogLevel::TT_LEVEL>) : (TraceTimerLogPrintFunc)NULL

class TraceTime: public StackObj {
private:
  bool          _active;    // do timing
  bool          _verbose;   // report every timing
  elapsedTimer  _t;         // timer
  elapsedTimer* _accum;     // accumulator
  const char*   _title;     // name of timer
  TraceTimerLogPrintFunc _print;

public:
  // Constructors
  TraceTime(const char* title,
            bool doit = true);

  TraceTime(const char* title,
            elapsedTimer* accumulator,
            bool doit = true,
            bool verbose = false);

  TraceTime(const char* title,
            TraceTimerLogPrintFunc ttlpf);

  ~TraceTime();
};

#endif // SHARE_RUNTIME_TIMERTRACE_HPP

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