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 Copyright (c) 2014 cocos2d-x.org
 
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 of this software and associated documentation files (the "Software"), to deal
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 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.
 
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#include "AllocatorTest.h"
#include "cocos2d.h"
#include <chrono>

USING_NS_CC;
USING_NS_CC_EXT;
using namespace cocos2d::ui;

AllocatorTests::AllocatorTests()
{
    ADD_TEST_CASE(AllocatorTest);
}

#define kNumberOfInstances 100000
#define kObjectSize 952 // sizeof(Sprite)

namespace
{
    class Test1;

    class Test1
    {
    public:

        Test1()
        {
            memset(bytes, 0, sizeof(bytes));
        }
        uint8_t bytes[kObjectSize];

#if CC_ENABLE_ALLOCATOR
        typedef cocos2d::allocator::AllocatorStrategyPool<Test1> tAllocator;
        static tAllocator _allocator;
#endif // CC_ENABLE_ALLOCATOR
        CC_USE_ALLOCATOR_POOL(Test1, _allocator);
    };

    class Test2
    {
    public:

        Test2()
        {
            memset(bytes, 0, sizeof(bytes));
        }
        uint8_t bytes[kObjectSize];
    };

#if CC_ENABLE_ALLOCATOR
    Test1::tAllocator Test1::_allocator("Test1", kNumberOfInstances);
#endif // CC_ENABLE_ALLOCATOR
}

//
// AllocatorTest
//

AllocatorTest::AllocatorTest()
{
    typedef std::vector<Test1*> tTest1Container;
    typedef std::vector<Test2*> tTest2Container;

    tTest1Container test1Container;
    test1Container.reserve(kNumberOfInstances);

    tTest2Container test2Container;
    test2Container.reserve(kNumberOfInstances);

    std::chrono::time_point<std::chrono::high_resolution_clock> alloc1Start, alloc1End, alloc2Start, alloc2End;
    std::chrono::time_point<std::chrono::high_resolution_clock> free1Start, free1End, free2Start, free2End;

    alloc1Start = std::chrono::high_resolution_clock::now();
    for (int i = 0; i < kNumberOfInstances; ++i)
        test1Container.push_back(new Test1);
    alloc1End = std::chrono::high_resolution_clock::now();

    free1Start = std::chrono::high_resolution_clock::now();
    for (int i = 0; i < kNumberOfInstances; ++i)
        delete test1Container[i];
    free1End = std::chrono::high_resolution_clock::now();
    test1Container.clear();

    alloc2Start = std::chrono::high_resolution_clock::now();
    for (int i = 0; i < kNumberOfInstances; ++i)
        test2Container.push_back(new Test2);
    alloc2End = std::chrono::high_resolution_clock::now();


    free2Start = std::chrono::high_resolution_clock::now();
    for (int i = 0; i < kNumberOfInstances; ++i)
        delete test2Container[i];
    free2End = std::chrono::high_resolution_clock::now();

    test2Container.clear();

    std::chrono::duration<double> elapsed_seconds_alloc1 = alloc1End - alloc1Start;
    std::chrono::duration<double> elapsed_seconds_alloc2 = alloc2End - alloc2Start;
    std::chrono::duration<double> elapsed_seconds_free1 = free1End - free1Start;
    std::chrono::duration<double> elapsed_seconds_free2 = free2End - free2Start;

    char buf[1000];

    const float x_start = 240;
    const float y_start = 100;
    const float y_delta = 20;
    float y = 0;

    sprintf(buf, "alloc1 %f", elapsed_seconds_alloc1.count());
    auto alloc1 = Label::createWithSystemFont(buf, "Helvetica", 12);
    alloc1->setPosition(x_start, y++ * y_delta + y_start);
    addChild(alloc1);

    sprintf(buf, "alloc2 %f", elapsed_seconds_alloc2.count());
    auto alloc2 = Label::createWithSystemFont(buf, "Helvetica", 12);
    alloc2->setPosition(x_start, y++ * y_delta + y_start);
    addChild(alloc2);

    sprintf(buf, "free1  %f", elapsed_seconds_free1.count());
    auto free1 = Label::createWithSystemFont(buf, "Helvetica", 12);
    free1->setPosition(x_start, y++ * y_delta + y_start);
    addChild(free1);

    sprintf(buf, "free2  %f", elapsed_seconds_free2.count());
    auto free2 = Label::createWithSystemFont(buf, "Helvetica", 12);
    free2->setPosition(x_start, y++ * y_delta + y_start);
    addChild(free2);
}

AllocatorTest::~AllocatorTest()
{
}

std::string AllocatorTest::title() const
{
    return "Allocator Test";
}