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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/searchcore/proton/documentmetastore/lid_allocator.h>
#include <vespa/vespalib/util/generationholder.h>
#include <vespa/vespalib/util/time.h>
#include <vespa/vespalib/gtest/gtest.h>
#include <iostream>
using vespalib::GenerationHolder;
using vespalib::Timer;
namespace proton {
using documentmetastore::LidAllocator;
class LidAllocatorTest : public ::testing::Test
{
protected:
GenerationHolder _gen_hold;
LidAllocator _allocator;
LidAllocatorTest()
: ::testing::Test(),
_gen_hold(),
_allocator(100, 100, _gen_hold)
{
}
~LidAllocatorTest()
{
_gen_hold.clearHoldLists();
}
uint32_t get_size() { return _allocator.getActiveLids().size(); }
void construct_free_list() {
_allocator.constructFreeList(_allocator.getActiveLids().size());
_allocator.setFreeListConstructed();
}
void register_lids(const std::vector<uint32_t>& lids) {
for (uint32_t lid : lids) {
_allocator.registerLid(lid);
}
}
std::vector<uint32_t> alloc_lids(uint32_t count) {
std::vector<uint32_t> result;
for (uint32_t i = 0; i < count; ++i) {
result.emplace_back(_allocator.getFreeLid(get_size()));
}
return result;
}
void activate_lids(const std::vector<uint32_t>& lids, bool active) {
for (uint32_t lid : lids) {
_allocator.updateActiveLids(lid, active);
}
}
void unregister_lids(const std::vector<uint32_t>& lids) {
_allocator.unregister_lids(lids);
}
void hold_lids(const std::vector<uint32_t>& lids) {
_allocator.holdLids(lids, get_size(), 0);
}
void trim_hold_lists() {
_allocator.trimHoldLists(1);
}
std::vector<uint32_t> get_valid_lids() {
std::vector<uint32_t> result;
auto size = get_size();
for (uint32_t lid = 1; lid < size; ++lid) {
if (_allocator.validLid(lid)) {
result.emplace_back(lid);
}
}
return result;
}
std::vector<uint32_t> get_active_lids() {
std::vector<uint32_t> result;
const auto &active_lids = _allocator.getActiveLids();
uint32_t lid = active_lids.getNextTrueBit(1);
while (lid < active_lids.size()) {
if (active_lids.testBit(lid)) {
result.emplace_back(lid);
}
lid = active_lids.getNextTrueBit(lid + 1);
}
return result;
}
void
assert_valid_lids(const std::vector<uint32_t>& exp_lids) {
EXPECT_EQ(exp_lids, get_valid_lids());
}
void
assert_active_lids(const std::vector<uint32_t>& exp_lids) {
EXPECT_EQ(exp_lids, get_active_lids());
}
};
TEST_F(LidAllocatorTest, unregister_lids)
{
register_lids({ 1, 2, 3, 4, 5, 6 });
activate_lids({ 4, 5, 6 }, true);
assert_valid_lids({1, 2, 3, 4, 5, 6});
assert_active_lids({4, 5, 6});
construct_free_list();
unregister_lids({1, 3, 5});
assert_valid_lids({2, 4, 6});
assert_active_lids({4, 6});
hold_lids({1, 3, 5});
trim_hold_lists();
EXPECT_EQ((std::vector<uint32_t>{1, 3, 5, 7, 8}), alloc_lids(5));
}
class LidAllocatorPerformanceTest : public LidAllocatorTest,
public testing::WithParamInterface<bool>
{
};
TEST_P(LidAllocatorPerformanceTest, unregister_lids_performance)
{
constexpr uint32_t test_size = 1000000;
_allocator.ensureSpace(test_size + 1, test_size + 1);
std::vector<std::vector<uint32_t>> buckets;
buckets.resize(1000);
auto reserve_size = (test_size + (buckets.size() - 1)) / buckets.size();
for (auto& bucket : buckets) {
bucket.reserve(reserve_size);
}
for (uint32_t i = 0; i < test_size; ++i) {
_allocator.registerLid(i + 1);
buckets[i % buckets.size()].emplace_back(i + 1);
}
construct_free_list();
Timer timer;
for (auto& bucket: buckets) {
if (GetParam()) {
unregister_lids(bucket);
} else {
for (auto lid : bucket) {
_allocator.unregisterLid(lid);
}
}
}
auto rate = test_size / vespalib::to_s(timer.elapsed());
std::cout << "Unregister rate: " << std::fixed << rate << std::endl;
}
VESPA_GTEST_INSTANTIATE_TEST_SUITE_P(LidAllocatorParameterizedPerformanceTest, LidAllocatorPerformanceTest, testing::Values(false, true));
}
GTEST_MAIN_RUN_ALL_TESTS()
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