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rocksdb/memory/memkind_kmem_allocator_test.cc

102 lines
2.9 KiB

// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// Copyright (c) 2019 Intel Corporation
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
#include <cstdio>
#ifdef MEMKIND
#include "memkind_kmem_allocator.h"
#include "rocksdb/cache.h"
#include "rocksdb/db.h"
#include "rocksdb/options.h"
#include "table/block_based/block_based_table_factory.h"
#include "test_util/testharness.h"
namespace ROCKSDB_NAMESPACE {
TEST(MemkindKmemAllocatorTest, Allocate) {
MemkindKmemAllocator allocator;
void* p;
try {
p = allocator.Allocate(1024);
} catch (const std::bad_alloc& e) {
return;
}
ASSERT_NE(p, nullptr);
size_t size = allocator.UsableSize(p, 1024);
ASSERT_GE(size, 1024);
allocator.Deallocate(p);
}
TEST(MemkindKmemAllocatorTest, DatabaseBlockCache) {
// Check if a memory node is available for allocation
try {
MemkindKmemAllocator allocator;
allocator.Allocate(1024);
} catch (const std::bad_alloc& e) {
return; // if no node available, skip the test
}
// Create database with block cache using MemkindKmemAllocator
Options options;
std::string dbname = test::PerThreadDBPath("memkind_kmem_allocator_test");
ASSERT_OK(DestroyDB(dbname, options));
options.create_if_missing = true;
std::shared_ptr<Cache> cache = NewLRUCache(
1024 * 1024, 6, false, false, std::make_shared<MemkindKmemAllocator>());
BlockBasedTableOptions table_options;
table_options.block_cache = cache;
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
DB* db = nullptr;
Status s = DB::Open(options, dbname, &db);
ASSERT_OK(s);
ASSERT_NE(db, nullptr);
ASSERT_EQ(cache->GetUsage(), 0);
// Write 2kB (200 values, each 10 bytes)
int num_keys = 200;
WriteOptions wo;
std::string val = "0123456789";
for (int i = 0; i < num_keys; i++) {
std::string key = std::to_string(i);
s = db->Put(wo, Slice(key), Slice(val));
ASSERT_OK(s);
}
ASSERT_OK(db->Flush(FlushOptions())); // Flush all data from memtable so that
// reads are from block cache
// Read and check block cache usage
ReadOptions ro;
std::string result;
for (int i = 0; i < num_keys; i++) {
std::string key = std::to_string(i);
s = db->Get(ro, key, &result);
ASSERT_OK(s);
ASSERT_EQ(result, val);
}
ASSERT_GT(cache->GetUsage(), 2000);
// Close database
s = db->Close();
ASSERT_OK(s);
ASSERT_OK(DestroyDB(dbname, options));
}
} // namespace ROCKSDB_NAMESPACE
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
#else
int main(int /*argc*/, char** /*argv*/) {
printf(
"Skip memkind_kmem_allocator_test as the required library memkind is "
"missing.");
}
#endif // MEMKIND