Quellcode-Bibliothek

^© Kompilation durch diese Firma

[Weder Korrektheit noch Funktionsfähigkeit der Software werden zugesichert.]

Datei: Enum1.java Sprache: C

/*
* Copyright (c) 2013, 2022, 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.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/

#include "precompiled.hpp"
#include "runtime/os.hpp"
#include "utilities/ticks.hpp"

#if defined(X86) && !defined(ZERO)
#include "rdtsc_x86.hpp"
#endif

template <typename TimeSource, const int unit>
inline double conversion(typename TimeSource::Type& value) {
  return (double)value * ((double)unit / (double)TimeSource::frequency());
}

uint64_t ElapsedCounterSource::frequency() {
  static const uint64_t freq = (uint64_t)os::elapsed_frequency();
  return freq;
}

ElapsedCounterSource::Type ElapsedCounterSource::now() {
  return os::elapsed_counter();
}

double ElapsedCounterSource::seconds(Type value) {
  return conversion<ElapsedCounterSource, 1>(value);
}

uint64_t ElapsedCounterSource::milliseconds(Type value) {
  return (uint64_t)conversion<ElapsedCounterSource, MILLIUNITS>(value);
}

uint64_t ElapsedCounterSource::microseconds(Type value) {
  return (uint64_t)conversion<ElapsedCounterSource, MICROUNITS>(value);
}

uint64_t ElapsedCounterSource::nanoseconds(Type value) {
  return (uint64_t)conversion<ElapsedCounterSource, NANOUNITS>(value);
}

uint64_t FastUnorderedElapsedCounterSource::frequency() {
#if defined(X86) && !defined(ZERO)
  static bool valid_rdtsc = Rdtsc::initialize();
  if (valid_rdtsc) {
    static const uint64_t freq = (uint64_t)Rdtsc::frequency();
    return freq;
  }
#endif
  static const uint64_t freq = (uint64_t)os::elapsed_frequency();
  return freq;
}

FastUnorderedElapsedCounterSource::Type FastUnorderedElapsedCounterSource::now() {
#if defined(X86) && !defined(ZERO)
  static bool valid_rdtsc = Rdtsc::initialize();
  if (valid_rdtsc) {
    return Rdtsc::elapsed_counter();
  }
#endif
  return os::elapsed_counter();
}

double FastUnorderedElapsedCounterSource::seconds(Type value) {
  return conversion<FastUnorderedElapsedCounterSource, 1>(value);
}

uint64_t FastUnorderedElapsedCounterSource::milliseconds(Type value) {
  return (uint64_t)conversion<FastUnorderedElapsedCounterSource, MILLIUNITS>(value);
}

uint64_t FastUnorderedElapsedCounterSource::microseconds(Type value) {
  return (uint64_t)conversion<FastUnorderedElapsedCounterSource, MICROUNITS>(value);
}

uint64_t FastUnorderedElapsedCounterSource::nanoseconds(Type value) {
  return (uint64_t)conversion<FastUnorderedElapsedCounterSource, NANOUNITS>(value);
}

uint64_t CompositeElapsedCounterSource::frequency() {
  return ElapsedCounterSource::frequency();
}

CompositeElapsedCounterSource::Type CompositeElapsedCounterSource::now() {
  CompositeTime ct;
  ct.val1 = ElapsedCounterSource::now();
#if defined(X86) && !defined(ZERO)
  static bool initialized = false;
  static bool valid_rdtsc = false;
  if (!initialized) {
    valid_rdtsc = Rdtsc::initialize();
    initialized = true;
  }
  if (valid_rdtsc) {
    ct.val2 = Rdtsc::elapsed_counter();
  }
#endif
  return ct;
}

double CompositeElapsedCounterSource::seconds(Type value) {
  return conversion<ElapsedCounterSource, 1>(value.val1);
}

uint64_t CompositeElapsedCounterSource::milliseconds(Type value) {
  return (uint64_t)conversion<ElapsedCounterSource, MILLIUNITS>(value.val1);
}

uint64_t CompositeElapsedCounterSource::microseconds(Type value) {
  return (uint64_t)conversion<ElapsedCounterSource, MICROUNITS>(value.val1);
}

uint64_t CompositeElapsedCounterSource::nanoseconds(Type value) {
  return (uint64_t)conversion<ElapsedCounterSource, NANOUNITS>(value.val1);
}

¤ Dauer der Verarbeitung: 0.21 Sekunden (vorverarbeitet) ¤

Download des Quellennavigators
Download des sprechenden Kalenders
in der Quellcodebibliothek suchen

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.