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rocksdb/memory/memory_allocator_test.cc
mrambacher fe9d495112 Return different Status based on ObjectRegistry::NewObject calls (#9333) 
Summary:
This fix addresses https://github.com/facebook/rocksdb/issues/9299.

If attempting to create a new object via the ObjectRegistry and a factory is not found, the ObjectRegistry will return a "NotSupported" status.  This is the same behavior as previously.

If the factory is found but could not successfully create the object, an "InvalidArgument" status is returned.  If the factory returned a reason why (in the errmsg), this message will be in the returned status.

In practice, there are two options in the ConfigOptions that control how these errors are propagated:
- If "ignore_unknown_options=true", then both InvalidArgument and NotSupported status codes will be swallowed internally.  Both cases will return success
- If "ignore_unsupported_options=true", then having no factory will return success but a failing factory will return an error
- If both options are false, both cases (no and failing factory) will return errors.

In practice this likely only changes Customizable that may be partially available.  For example, the JEMallocMemoryAllocator is a built-in allocator that is registered with the system but may not be compiled in.  In this case, the status code for this allocator changed from NotSupported("JEMalloc not available") to InvalidArgumen("JEMalloc not available").  Other Customizable builtins/plugins would have the same semantics.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9333

Reviewed By: pdillinger

Differential Revision: D33517681

Pulled By: mrambacher

fbshipit-source-id: 8033052d4a4a7b88c2d9f90147b1b4467e51f6fd
2022-02-11 05:11:24 -08:00

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// 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>
#include "memory/jemalloc_nodump_allocator.h"
#include "memory/memkind_kmem_allocator.h"
#include "rocksdb/cache.h"
#include "rocksdb/convenience.h"
#include "rocksdb/db.h"
#include "rocksdb/options.h"
#include "table/block_based/block_based_table_factory.h"
#include "test_util/testharness.h"
#include "utilities/memory_allocators.h"
namespace ROCKSDB_NAMESPACE {
// TODO: the tests do not work in LITE mode due to relying on
// `CreateFromString()` to create non-default memory allocators.
#ifndef ROCKSDB_LITE
class MemoryAllocatorTest
: public testing::Test,
public ::testing::WithParamInterface<std::tuple<std::string, bool>> {
public:
MemoryAllocatorTest() {
std::tie(id_, supported_) = GetParam();
Status s =
MemoryAllocator::CreateFromString(ConfigOptions(), id_, &allocator_);
EXPECT_EQ(supported_, s.ok());
}
bool IsSupported() { return supported_; }
std::shared_ptr<MemoryAllocator> allocator_;
std::string id_;
private:
bool supported_;
};
TEST_P(MemoryAllocatorTest, Allocate) {
if (!IsSupported()) {
return;
}
void* p = allocator_->Allocate(1024);
ASSERT_NE(p, nullptr);
size_t size = allocator_->UsableSize(p, 1024);
ASSERT_GE(size, 1024);
allocator_->Deallocate(p);
}
TEST_P(MemoryAllocatorTest, CreateAllocator) {
ConfigOptions config_options;
config_options.ignore_unknown_options = false;
config_options.ignore_unsupported_options = false;
std::shared_ptr<MemoryAllocator> orig, copy;
Status s = MemoryAllocator::CreateFromString(config_options, id_, &orig);
if (!IsSupported()) {
ASSERT_TRUE(s.IsNotSupported());
} else {
ASSERT_OK(s);
ASSERT_NE(orig, nullptr);
#ifndef ROCKSDB_LITE
std::string str = orig->ToString(config_options);
ASSERT_OK(MemoryAllocator::CreateFromString(config_options, str, &copy));
ASSERT_EQ(orig, copy);
#endif // ROCKSDB_LITE
}
}
TEST_P(MemoryAllocatorTest, DatabaseBlockCache) {
if (!IsSupported()) {
// Check if a memory node is available for allocation
}
// Create database with block cache using the MemoryAllocator
Options options;
std::string dbname = test::PerThreadDBPath("allocator_test");
ASSERT_OK(DestroyDB(dbname, options));
options.create_if_missing = true;
BlockBasedTableOptions table_options;
auto cache = NewLRUCache(1024 * 1024, 6, false, false, allocator_);
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_LE(cache->GetUsage(), 104); // Cache will contain stats
// 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);
delete db;
ASSERT_OK(DestroyDB(dbname, options));
}
class CreateMemoryAllocatorTest : public testing::Test {
public:
CreateMemoryAllocatorTest() {
config_options_.ignore_unknown_options = false;
config_options_.ignore_unsupported_options = false;
}
ConfigOptions config_options_;
};
TEST_F(CreateMemoryAllocatorTest, JemallocOptionsTest) {
std::shared_ptr<MemoryAllocator> allocator;
std::string id = std::string("id=") + JemallocNodumpAllocator::kClassName();
Status s = MemoryAllocator::CreateFromString(config_options_, id, &allocator);
if (!JemallocNodumpAllocator::IsSupported()) {
ASSERT_NOK(s);
ROCKSDB_GTEST_BYPASS("JEMALLOC not supported");
return;
}
ASSERT_OK(s);
ASSERT_NE(allocator, nullptr);
JemallocAllocatorOptions jopts;
auto opts = allocator->GetOptions<JemallocAllocatorOptions>();
ASSERT_NE(opts, nullptr);
ASSERT_EQ(opts->limit_tcache_size, jopts.limit_tcache_size);
ASSERT_EQ(opts->tcache_size_lower_bound, jopts.tcache_size_lower_bound);
ASSERT_EQ(opts->tcache_size_upper_bound, jopts.tcache_size_upper_bound);
ASSERT_NOK(MemoryAllocator::CreateFromString(
config_options_,
id + "; limit_tcache_size=true; tcache_size_lower_bound=4096; "
"tcache_size_upper_bound=1024",
&allocator));
ASSERT_OK(MemoryAllocator::CreateFromString(
config_options_,
id + "; limit_tcache_size=false; tcache_size_lower_bound=4096; "
"tcache_size_upper_bound=1024",
&allocator));
opts = allocator->GetOptions<JemallocAllocatorOptions>();
ASSERT_NE(opts, nullptr);
ASSERT_EQ(opts->limit_tcache_size, false);
ASSERT_EQ(opts->tcache_size_lower_bound, 4096U);
ASSERT_EQ(opts->tcache_size_upper_bound, 1024U);
ASSERT_OK(MemoryAllocator::CreateFromString(
config_options_,
id + "; limit_tcache_size=true; tcache_size_upper_bound=4096; "
"tcache_size_lower_bound=1024",
&allocator));
opts = allocator->GetOptions<JemallocAllocatorOptions>();
ASSERT_NE(opts, nullptr);
ASSERT_EQ(opts->limit_tcache_size, true);
ASSERT_EQ(opts->tcache_size_lower_bound, 1024U);
ASSERT_EQ(opts->tcache_size_upper_bound, 4096U);
}
TEST_F(CreateMemoryAllocatorTest, NewJemallocNodumpAllocator) {
JemallocAllocatorOptions jopts;
std::shared_ptr<MemoryAllocator> allocator;
jopts.limit_tcache_size = true;
jopts.tcache_size_lower_bound = 2 * 1024;
jopts.tcache_size_upper_bound = 1024;
ASSERT_NOK(NewJemallocNodumpAllocator(jopts, nullptr));
Status s = NewJemallocNodumpAllocator(jopts, &allocator);
std::string msg;
if (!JemallocNodumpAllocator::IsSupported(&msg)) {
ASSERT_NOK(s);
ROCKSDB_GTEST_BYPASS("JEMALLOC not supported");
return;
}
ASSERT_NOK(s); // Invalid options
ASSERT_EQ(allocator, nullptr);
jopts.tcache_size_upper_bound = 4 * 1024;
ASSERT_OK(NewJemallocNodumpAllocator(jopts, &allocator));
ASSERT_NE(allocator, nullptr);
auto opts = allocator->GetOptions<JemallocAllocatorOptions>();
ASSERT_EQ(opts->tcache_size_upper_bound, jopts.tcache_size_upper_bound);
ASSERT_EQ(opts->tcache_size_lower_bound, jopts.tcache_size_lower_bound);
ASSERT_EQ(opts->limit_tcache_size, jopts.limit_tcache_size);
jopts.limit_tcache_size = false;
ASSERT_OK(NewJemallocNodumpAllocator(jopts, &allocator));
ASSERT_NE(allocator, nullptr);
opts = allocator->GetOptions<JemallocAllocatorOptions>();
ASSERT_EQ(opts->tcache_size_upper_bound, jopts.tcache_size_upper_bound);
ASSERT_EQ(opts->tcache_size_lower_bound, jopts.tcache_size_lower_bound);
ASSERT_EQ(opts->limit_tcache_size, jopts.limit_tcache_size);
}
INSTANTIATE_TEST_CASE_P(DefaultMemoryAllocator, MemoryAllocatorTest,
::testing::Values(std::make_tuple(
DefaultMemoryAllocator::kClassName(), true)));
#ifdef MEMKIND
INSTANTIATE_TEST_CASE_P(
MemkindkMemAllocator, MemoryAllocatorTest,
::testing::Values(std::make_tuple(MemkindKmemAllocator::kClassName(),
MemkindKmemAllocator::IsSupported())));
#endif // MEMKIND
#ifdef ROCKSDB_JEMALLOC
INSTANTIATE_TEST_CASE_P(
JemallocNodumpAllocator, MemoryAllocatorTest,
::testing::Values(std::make_tuple(JemallocNodumpAllocator::kClassName(),
JemallocNodumpAllocator::IsSupported())));
#endif // ROCKSDB_JEMALLOC
#endif // ROCKSDB_LITE
} // namespace ROCKSDB_NAMESPACE
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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