// SPDX-License-Identifier: BSD-2-Clause
/* Copyright (C) 2015 - 2020 Intel Corporation. */

#include <chrono>
#include "common.h"
#include "allocator_perf_tool/Configuration.hpp"
#include "allocator_perf_tool/StressIncreaseToMax.h"
#include "allocator_perf_tool/HugePageOrganizer.hpp"

//memkind stress and longevity tests using Allocatr Perf Tool.
class AllocateToMaxStressTests: public :: testing::Test
{

protected:
    void SetUp()
    {}

    void TearDown()
    {}

    //Allocates memory up to 'memory_request_limit'.
    void run(TypesConf kinds, TypesConf func_calls, unsigned operations,
             size_t size_from, size_t size_to, size_t memory_request_limit,
             bool touch_memory)
    {
        RecordProperty("memory_operations", operations);
        RecordProperty("size_from", size_from);
        RecordProperty("size_to", size_to);

        TaskConf task_conf = {
            .n = operations, //number of memory operations
            .allocation_sizes_conf = {
                operations, //number of memory operations
                size_from, //no random sizes.
                size_to
            },
            .func_calls = func_calls, //enable allocator function call
            .allocators_types = kinds, //enable allocator
            .seed = 11, //random seed
            .touch_memory = touch_memory //enable or disable touching memory
        };

        std::chrono::time_point<std::chrono::system_clock> start, end;
        start = std::chrono::system_clock::now();

        //Execute test iterations.
        std::vector<iteration_result> results =
            StressIncreaseToMax::execute_test_iterations(task_conf, 120,
                                                         memory_request_limit);

        end = std::chrono::system_clock::now();

        std::chrono::duration<double> elapsed_time = end - start;

        RecordProperty("elapsed_time", elapsed_time.count());

        //Check finish status.
        EXPECT_EQ(check_allocation_errors(results, task_conf), 0);
    }

    //Check true allocation errors over all iterations.
    //Return iteration number (>0) when error occurs, or zero
    int check_allocation_errors(std::vector<iteration_result> &results,
                                const TaskConf &task_conf)
    {
        for (size_t i=0; i<results.size(); i++) {
            //Check if test ends with allocation error.
            if(results[i].is_allocation_error) {
                return i+1;
            }
        }

        return 0;
    }
};

TEST_F(AllocateToMaxStressTests,
       test_TC_MEMKIND_slts_ALLOCATE_TO_MAX_MEMKIND_HBW)
{
    run(TypesConf(AllocatorTypes::MEMKIND_HBW), TypesConf(FunctionCalls::MALLOC),
        1024, MB, MB, GB, true);
}

TEST_F(AllocateToMaxStressTests,
       test_TC_MEMKIND_slts_ALLOCATE_TO_MAX_MEMKIND_INTERLEAVE)
{
    run(TypesConf(AllocatorTypes::MEMKIND_INTERLEAVE),
        TypesConf(FunctionCalls::MALLOC), 4096, MB, MB, 4*GB, true);
}

TEST_F(AllocateToMaxStressTests,
       test_TC_MEMKIND_slts_ALLOCATE_TO_MAX_MEMKIND_HBW_PREFERRED)
{
    run(TypesConf(AllocatorTypes::MEMKIND_HBW_PREFERRED),
        TypesConf(FunctionCalls::MALLOC), 17408, MB, MB, 17*GB, true);
}

TEST_F(AllocateToMaxStressTests,
       test_TC_MEMKIND_2MBPages_slts_ext_ALLOCATE_TO_MAX_MEMKIND_HBW_HUGETLB)
{
    HugePageOrganizer huge_page_organizer(2250);
    run(TypesConf(AllocatorTypes::MEMKIND_HBW_HUGETLB),
        TypesConf(FunctionCalls::MALLOC), 1024, 4*MB, 4*MB, GB, true);
}

TEST_F(AllocateToMaxStressTests,
       test_TC_MEMKIND_slts_ALLOCATE_TO_MAX_DIFFERENT_SIZES)
{
    run(TypesConf(AllocatorTypes::MEMKIND_HBW), TypesConf(FunctionCalls::MALLOC),
        2500, 1, 8*MB, GB, true);
}

TEST_F(AllocateToMaxStressTests,
       test_TC_MEMKIND_slts_ALLOCATE_TO_MAX_AND_FREE_MEMKIND_DEFAULT)
{
    TypesConf func_calls;
    func_calls.enable_type(FunctionCalls::MALLOC);
    func_calls.enable_type(FunctionCalls::FREE);
    run(TypesConf(AllocatorTypes::MEMKIND_DEFAULT), func_calls, 2500, 500*MB, 8*GB,
        16*GB, false);
}

TEST_F(AllocateToMaxStressTests,
       test_TC_MEMKIND_slts_ALLOCATE_TO_MAX_AND_FREE_MEMKIND_REGULAR)
{
    TypesConf func_calls;
    func_calls.enable_type(FunctionCalls::MALLOC);
    func_calls.enable_type(FunctionCalls::FREE);
    run(TypesConf(AllocatorTypes::MEMKIND_REGULAR), func_calls, 2500, 500*MB, 8*GB,
        16*GB, false);
}

TEST_F(AllocateToMaxStressTests,
       test_TC_MEMKIND_slts_ALLOCATE_TO_MAX_DIFFERENT_KINDS)
{
    TypesConf kinds;
    kinds.enable_type(AllocatorTypes::MEMKIND_HBW);
    kinds.enable_type(AllocatorTypes::MEMKIND_HBW_PREFERRED);
    kinds.enable_type(AllocatorTypes::MEMKIND_DEFAULT);
    kinds.enable_type(AllocatorTypes::MEMKIND_INTERLEAVE);
    kinds.enable_type(AllocatorTypes::MEMKIND_HBW_INTERLEAVE);
    kinds.enable_type(AllocatorTypes::MEMKIND_REGULAR);
    run(kinds, TypesConf(FunctionCalls::MALLOC), 2048, MB, MB, 2*GB, true);
}

TEST_F(AllocateToMaxStressTests,
       test_TC_MEMKIND_slts_ext_ALLOCATE_TO_MAX_DIFFERENT_KINDS_WITH_HUGETLB)
{
    HugePageOrganizer huge_page_organizer(2250);
    TypesConf kinds;
    kinds.enable_type(AllocatorTypes::MEMKIND_HBW);
    kinds.enable_type(AllocatorTypes::MEMKIND_HBW_HUGETLB);
    kinds.enable_type(AllocatorTypes::MEMKIND_HBW_PREFERRED_HUGETLB);
    run(kinds, TypesConf(FunctionCalls::MALLOC), 2048, MB, MB, 2*GB, true);
}