/*
 * Copyright (c) 2015, 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_basic() {
  const uint length = 3;
  const char* title = "Test array";

  WorkerDataArray<size_t> array(length, title);
  assert(strncmp(array.title(), title, strlen(title)) == 0 , "Expected titles to match");

  const size_t expected[length] = {5, 3, 7};
  for (uint i = 0; i < length; i++) {
    array.set(i, expected[i]);
  }
  for (uint i = 0; i < length; i++) {
    assert(array.get(i) == expected[i], "Expected elements to match");
  }

  assert(array.sum() == (5 + 3 + 7), "Expected sums to match");
  assert(array.average() == 5.0, "Expected averages to match");

  for (uint i = 0; i < length; i++) {
    array.add(i, 1);
  }
  for (uint i = 0; i < length; i++) {
    assert(array.get(i) == expected[i] + 1, "Expected add to increment values");
  }
}

void WorkerDataArray_test_with_uninitialized() {
  const uint length = 3;
  const size_t uninitilized = WorkerDataArray<size_t>::uninitialized();
  WorkerDataArray<size_t> array(length, "Test array");

  const size_t expected[length] = {5, uninitilized, 7};
  for (uint i = 0; i < length; i++) {
    array.set(i, expected[i]);
  }
  for (uint i = 0; i < length; i++) {
    assert(array.get(i) == expected[i], "Expected elements to match");
  }

  assert(array.sum() == (5 + 7), "Expected sums to match");
  assert(array.average() == 6.0, "Expected averages to match");
}

void WorkerDataArray_test_uninitialized() {
  const uint length = 3;
  const size_t uninitilized = WorkerDataArray<size_t>::uninitialized();
  WorkerDataArray<size_t> array(length, "Test array");

  for (uint i = 0; i < length; i++) {
    array.set(i, uninitilized);
  }

  assert(array.sum() == 0, "Sum should be 0 when no slots have been used.");
  assert(array.average() == 0.0, "Average should be 0.0 when no slots have been used.");
}

void WorkerDataArray_test_print_summary() {
  const uint length = 4;
  const size_t uninitilized = WorkerDataArray<size_t>::uninitialized();
  WorkerDataArray<size_t> array(length, "Test array");

  const size_t expected[length] = {5, uninitilized, 7, uninitilized};
  for (uint i = 0; i < length; i++) {
    array.set(i, expected[i]);
  }

  ResourceMark rm;
  stringStream out;
  array.print_summary_on(&out);
  const char* out_string = out.as_string();
  const char* expected_string = "Test array                Min: 5, Avg:  6,0, Max: 7, Diff: 2, Sum: 12, Workers: 2\n";
  const size_t expected_len = strlen(expected_string);
  assert(expected_len == strlen(out_string), "Wrong string length, expected " SIZE_FORMAT " but got " SIZE_FORMAT, expected_len, strlen(out_string));
  assert(strncmp(expected_string, out_string, expected_len) == 0, "Expected '%s' but got: '%s'", expected_string, out_string);
}

void WorkerDataArray_test_print_summary_skipped() {
  const uint length = 2;
  const size_t uninitilized = WorkerDataArray<size_t>::uninitialized();
  WorkerDataArray<size_t> array(length, "Test array");

  const size_t expected[length] = {uninitilized, uninitilized};
  for (uint i = 0; i < length; i++) {
    array.set(i, expected[i]);
  }

  ResourceMark rm;
  stringStream out;
  array.print_summary_on(&out);
  const char* out_string = out.as_string();
  const char* expected_string = "Test array                skipped\n";
  const size_t expected_len = strlen(expected_string);
  assert(expected_len == strlen(out_string), "Wrong string length, expected " SIZE_FORMAT " but got " SIZE_FORMAT, expected_len, strlen(out_string));
  assert(strncmp(expected_string, out_string, expected_len) == 0, "Expected '%s' but got: '%s'", expected_string, out_string);
}

void WorkerDataArray_test_print_details() {
  const uint length = 4;
  const size_t uninitilized = WorkerDataArray<size_t>::uninitialized();
  WorkerDataArray<size_t> array(length, "Test array");

  const size_t expected[length] = {5, uninitilized, 7, uninitilized};
  for (uint i = 0; i < length; i++) {
    array.set(i, expected[i]);
  }

  ResourceMark rm;
  stringStream out;
  array.print_details_on(&out);
  const char* out_string = out.as_string();
  const char* expected_string = "                           5 -  7 -\n";
  const size_t expected_len = strlen(expected_string);
  assert(expected_len == strlen(out_string), "Wrong string length, expected " SIZE_FORMAT " but got " SIZE_FORMAT, expected_len, strlen(out_string));
  assert(strncmp(expected_string, out_string, expected_len) == 0, "Expected '%s' but got: '%s'", expected_string, out_string);
}

void WorkerDataArray_test() {
  WorkerDataArray_test_basic();
  WorkerDataArray_test_with_uninitialized();
  WorkerDataArray_test_uninitialized();
  WorkerDataArray_test_print_summary();
  WorkerDataArray_test_print_summary_skipped();
  WorkerDataArray_test_print_details();
}

#endif