/*

 * Copyright (c) 2015, 2016, 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 "gc/g1/workerDataArray.inline.hpp"

#include "utilities/ostream.hpp"

template <>

size_t WorkerDataArray<size_t>::uninitialized() {

  return (size_t)-1;

}

template <>

double WorkerDataArray<double>::uninitialized() {

  return -1.0;

}

template <>

void WorkerDataArray<double>::WDAPrinter::summary(outputStream* out, double min, double avg, double max, double diff, double sum, bool print_sum) {

  out->print(" Min: %4.1lf, Avg: %4.1lf, Max: %4.1lf, Diff: %4.1lf", min * MILLIUNITS, avg * MILLIUNITS, max * MILLIUNITS, diff* MILLIUNITS);

  if (print_sum) {

    out->print(", Sum: %4.1lf", sum * MILLIUNITS);

  }

}

template <>

void WorkerDataArray<size_t>::WDAPrinter::summary(outputStream* out, size_t min, double avg, size_t max, size_t diff, size_t sum, bool print_sum) {

  out->print(" Min: " SIZE_FORMAT ", Avg: %4.1lf, Max: " SIZE_FORMAT ", Diff: " SIZE_FORMAT, min, avg, max, diff);

  if (print_sum) {

    out->print(", Sum: " SIZE_FORMAT, sum);

  }

}

template <>

void WorkerDataArray<double>::WDAPrinter::details(const WorkerDataArray<double>* phase, outputStream* out) {

  out->print("%-25s", "");

  for (uint i = 0; i < phase->_length; ++i) {

    double value = phase->get(i);

    if (value != phase->uninitialized()) {

      out->print(" %4.1lf", phase->get(i) * 1000.0);

    } else {

      out->print(" -");

    }

  }

  out->cr();

}

template <>

void WorkerDataArray<size_t>::WDAPrinter::details(const WorkerDataArray<size_t>* phase, outputStream* out) {

  out->print("%-25s", "");

  for (uint i = 0; i < phase->_length; ++i) {

    size_t value = phase->get(i);

    if (value != phase->uninitialized()) {

      out->print("  " SIZE_FORMAT, phase->get(i));

    } else {

      out->print(" -");

    }

  }

  out->cr();

}

#ifndef PRODUCT

#include "memory/resourceArea.hpp"

void WorkerDataArray_test_verify_string(const char* expected_string, const char* actual_string) {

  const size_t expected_len = strlen(expected_string);

  assert(expected_len == strlen(actual_string),

      "Wrong string length, expected " SIZE_FORMAT " but got " SIZE_FORMAT "(Expected '%s' but got: '%s')",

      expected_len, strlen(actual_string), expected_string, actual_string);

  // Can't use strncmp here because floating point values use different decimal points for different locales.

  // Allow strings to differ in "." vs. "," only. This should still catch most errors.

  for (size_t i = 0; i < expected_len; i++) {

    char e = expected_string[i];

    char a = actual_string[i];

    if (e != a) {

      if ((e == '.' || e == ',') && (a == '.' || a == ',')) {

        // Most likely just a difference in locale

      } else {

        assert(false, "Expected '%s' but got: '%s'", expected_string, actual_string);

      }

    }

  }

}

void WorkerDataArray_test_verify_array(WorkerDataArray<size_t>& array, size_t expected_sum, double expected_avg, const char* expected_summary, const char* exected_details) {

  const double epsilon = 0.0001;

  assert(array.sum() == expected_sum, "Wrong sum, expected: " SIZE_FORMAT " but got: " SIZE_FORMAT, expected_sum, array.sum());

  assert(fabs(array.average() - expected_avg) < epsilon, "Wrong average, expected: %f but got: %f", expected_avg, array.average());

  ResourceMark rm;

  stringStream out;

  array.print_summary_on(&out);

  WorkerDataArray_test_verify_string(expected_summary, out.as_string());

  out.reset();

  array.print_details_on(&out);

  WorkerDataArray_test_verify_string(exected_details, out.as_string());

}

void WorkerDataArray_test_verify_array(WorkerDataArray<double>& array, double expected_sum, double expected_avg, const char* expected_summary, const char* exected_details) {

  const double epsilon = 0.0001;

  assert(fabs(array.sum() - expected_sum) < epsilon, "Wrong sum, expected: %f but got: %f", expected_sum, array.sum());

  assert(fabs(array.average() - expected_avg) < epsilon, "Wrong average, expected: %f but got: %f", expected_avg, array.average());

  ResourceMark rm;

  stringStream out;

  array.print_summary_on(&out);

  WorkerDataArray_test_verify_string(expected_summary, out.as_string());

  out.reset();

  array.print_details_on(&out);

  WorkerDataArray_test_verify_string(exected_details, out.as_string());

}

void WorkerDataArray_test_basic() {

  WorkerDataArray<size_t> array(3, "Test array");

  array.set(0, 5);

  array.set(1, 3);

  array.set(2, 7);

  WorkerDataArray_test_verify_array(array, 15, 5.0,

      "Test array                Min: 3, Avg:  5.0, Max: 7, Diff: 4, Sum: 15, Workers: 3\n",

      "                           5  3  7\n" );

}

void WorkerDataArray_test_add() {

  WorkerDataArray<size_t> array(3, "Test array");

  array.set(0, 5);

  array.set(1, 3);

  array.set(2, 7);

  for (uint i = 0; i < 3; i++) {

    array.add(i, 1);

  }

  WorkerDataArray_test_verify_array(array, 18, 6.0,

      "Test array                Min: 4, Avg:  6.0, Max: 8, Diff: 4, Sum: 18, Workers: 3\n",

      "                           6  4  8\n" );

}

void WorkerDataArray_test_with_uninitialized() {

  WorkerDataArray<size_t> array(3, "Test array");

  array.set(0, 5);

  array.set(1, WorkerDataArray<size_t>::uninitialized());

  array.set(2, 7);

  WorkerDataArray_test_verify_array(array, 12, 6,

      "Test array                Min: 5, Avg:  6.0, Max: 7, Diff: 2, Sum: 12, Workers: 2\n",

      "                           5 -  7\n" );

}

void WorkerDataArray_test_uninitialized() {

  WorkerDataArray<size_t> array(3, "Test array");

  array.set(0, WorkerDataArray<size_t>::uninitialized());

  array.set(1, WorkerDataArray<size_t>::uninitialized());

  array.set(2, WorkerDataArray<size_t>::uninitialized());

  WorkerDataArray_test_verify_array(array, 0, 0.0,

      "Test array                skipped\n",

      "                          - - -\n" );

}

void WorkerDataArray_test_double_with_uninitialized() {

  WorkerDataArray<double> array(3, "Test array");

  array.set(0, 5.1 / MILLIUNITS);

  array.set(1, WorkerDataArray<double>::uninitialized());

  array.set(2, 7.2 / MILLIUNITS);

  WorkerDataArray_test_verify_array(array, 12.3 / MILLIUNITS, 6.15 / MILLIUNITS,

      "Test array                Min:  5.1, Avg:  6.1, Max:  7.2, Diff:  2.1, Sum: 12.3, Workers: 2\n",

      "                           5.1 -  7.2\n" );

}

void WorkerDataArray_test() {

  WorkerDataArray_test_basic();

  WorkerDataArray_test_add();

  WorkerDataArray_test_with_uninitialized();

  WorkerDataArray_test_uninitialized();

  WorkerDataArray_test_double_with_uninitialized();

}

#endif