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rocksdb/options/options_settable_test.cc

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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// 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).
//
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#include <cstring>
#include "options/cf_options.h"
#include "options/db_options.h"
#include "options/options_helper.h"
#include "rocksdb/convenience.h"
#include "test_util/testharness.h"
#ifndef GFLAGS
bool FLAGS_enable_print = false;
#else
#include "util/gflags_compat.h"
using GFLAGS_NAMESPACE::ParseCommandLineFlags;
DEFINE_bool(enable_print, false, "Print options generated to console.");
#endif // GFLAGS
namespace ROCKSDB_NAMESPACE {
// Verify options are settable from options strings.
// We take the approach that depends on compiler behavior that copy constructor
// won't touch implicit padding bytes, so that the test is fragile.
// As a result, we only run the tests to verify new fields in options are
// settable through string on limited platforms as it depends on behavior of
// compilers.
#ifndef ROCKSDB_LITE
#if defined OS_LINUX || defined OS_WIN
#ifndef __clang__
class OptionsSettableTest : public testing::Test {
public:
OptionsSettableTest() {}
};
const char kSpecialChar = 'z';
typedef std::vector<std::pair<size_t, size_t>> OffsetGap;
void FillWithSpecialChar(char* start_ptr, size_t total_size,
const OffsetGap& excluded,
char special_char = kSpecialChar) {
size_t offset = 0;
for (auto& pair : excluded) {
std::memset(start_ptr + offset, special_char, pair.first - offset);
offset = pair.first + pair.second;
}
std::memset(start_ptr + offset, special_char, total_size - offset);
}
int NumUnsetBytes(char* start_ptr, size_t total_size,
const OffsetGap& excluded) {
int total_unset_bytes_base = 0;
size_t offset = 0;
for (auto& pair : excluded) {
for (char* ptr = start_ptr + offset; ptr < start_ptr + pair.first; ptr++) {
if (*ptr == kSpecialChar) {
total_unset_bytes_base++;
}
}
offset = pair.first + pair.second;
}
for (char* ptr = start_ptr + offset; ptr < start_ptr + total_size; ptr++) {
if (*ptr == kSpecialChar) {
total_unset_bytes_base++;
}
}
return total_unset_bytes_base;
}
// Return true iff two structs are the same except excluded fields.
bool CompareBytes(char* start_ptr1, char* start_ptr2, size_t total_size,
const OffsetGap& excluded) {
size_t offset = 0;
for (auto& pair : excluded) {
for (; offset < pair.first; offset++) {
if (*(start_ptr1 + offset) != *(start_ptr2 + offset)) {
return false;
}
}
offset = pair.first + pair.second;
}
for (; offset < total_size; offset++) {
if (*(start_ptr1 + offset) != *(start_ptr2 + offset)) {
return false;
}
}
return true;
}
// If the test fails, likely a new option is added to BlockBasedTableOptions
// but it cannot be set through GetBlockBasedTableOptionsFromString(), or the
// test is not updated accordingly.
// After adding an option, we need to make sure it is settable by
// GetBlockBasedTableOptionsFromString() and add the option to the input string
// passed to the GetBlockBasedTableOptionsFromString() in this test.
// If it is a complicated type, you also need to add the field to
// kBbtoExcluded, and maybe add customized verification for it.
TEST_F(OptionsSettableTest, BlockBasedTableOptionsAllFieldsSettable) {
// Items in the form of <offset, size>. Need to be in ascending order
// and not overlapping. Need to updated if new pointer-option is added.
const OffsetGap kBbtoExcluded = {
{offsetof(struct BlockBasedTableOptions, flush_block_policy_factory),
sizeof(std::shared_ptr<FlushBlockPolicyFactory>)},
{offsetof(struct BlockBasedTableOptions, block_cache),
sizeof(std::shared_ptr<Cache>)},
{offsetof(struct BlockBasedTableOptions, persistent_cache),
sizeof(std::shared_ptr<PersistentCache>)},
{offsetof(struct BlockBasedTableOptions, block_cache_compressed),
sizeof(std::shared_ptr<Cache>)},
{offsetof(struct BlockBasedTableOptions, filter_policy),
sizeof(std::shared_ptr<const FilterPolicy>)},
};
// In this test, we catch a new option of BlockBasedTableOptions that is not
// settable through GetBlockBasedTableOptionsFromString().
// We count padding bytes of the option struct, and assert it to be the same
// as unset bytes of an option struct initialized by
// GetBlockBasedTableOptionsFromString().
char* bbto_ptr = new char[sizeof(BlockBasedTableOptions)];
// Count padding bytes by setting all bytes in the memory to a special char,
// copy a well constructed struct to this memory and see how many special
// bytes left.
BlockBasedTableOptions* bbto = new (bbto_ptr) BlockBasedTableOptions();
FillWithSpecialChar(bbto_ptr, sizeof(BlockBasedTableOptions), kBbtoExcluded);
// It based on the behavior of compiler that padding bytes are not changed
// when copying the struct. It's prone to failure when compiler behavior
// changes. We verify there is unset bytes to detect the case.
*bbto = BlockBasedTableOptions();
int unset_bytes_base =
NumUnsetBytes(bbto_ptr, sizeof(BlockBasedTableOptions), kBbtoExcluded);
ASSERT_GT(unset_bytes_base, 0);
bbto->~BlockBasedTableOptions();
// Construct the base option passed into
// GetBlockBasedTableOptionsFromString().
bbto = new (bbto_ptr) BlockBasedTableOptions();
FillWithSpecialChar(bbto_ptr, sizeof(BlockBasedTableOptions), kBbtoExcluded);
// This option is not setable:
bbto->use_delta_encoding = true;
char* new_bbto_ptr = new char[sizeof(BlockBasedTableOptions)];
BlockBasedTableOptions* new_bbto =
new (new_bbto_ptr) BlockBasedTableOptions();
FillWithSpecialChar(new_bbto_ptr, sizeof(BlockBasedTableOptions),
kBbtoExcluded);
// Need to update the option string if a new option is added.
ASSERT_OK(GetBlockBasedTableOptionsFromString(
*bbto,
"cache_index_and_filter_blocks=1;"
"cache_index_and_filter_blocks_with_high_priority=true;"
"pin_l0_filter_and_index_blocks_in_cache=1;"
"pin_top_level_index_and_filter=1;"
"index_type=kHashSearch;"
"data_block_index_type=kDataBlockBinaryAndHash;"
"index_shortening=kNoShortening;"
"data_block_hash_table_util_ratio=0.75;"
"checksum=kxxHash;hash_index_allow_collision=1;no_block_cache=1;"
"block_cache=1M;block_cache_compressed=1k;block_size=1024;"
"block_size_deviation=8;block_restart_interval=4; "
"metadata_block_size=1024;"
"partition_filters=false;"
"optimize_filters_for_memory=true;"
"index_block_restart_interval=4;"
"filter_policy=bloomfilter:4:true;whole_key_filtering=1;"
"format_version=1;"
"hash_index_allow_collision=false;"
"verify_compression=true;read_amp_bytes_per_bit=0;"
"enable_index_compression=false;"
"block_align=true",
new_bbto));
ASSERT_EQ(unset_bytes_base,
NumUnsetBytes(new_bbto_ptr, sizeof(BlockBasedTableOptions),
kBbtoExcluded));
ASSERT_TRUE(new_bbto->block_cache.get() != nullptr);
ASSERT_TRUE(new_bbto->block_cache_compressed.get() != nullptr);
ASSERT_TRUE(new_bbto->filter_policy.get() != nullptr);
bbto->~BlockBasedTableOptions();
new_bbto->~BlockBasedTableOptions();
delete[] bbto_ptr;
delete[] new_bbto_ptr;
}
// If the test fails, likely a new option is added to DBOptions
// but it cannot be set through GetDBOptionsFromString(), or the test is not
// updated accordingly.
// After adding an option, we need to make sure it is settable by
// GetDBOptionsFromString() and add the option to the input string passed to
// DBOptionsFromString()in this test.
// If it is a complicated type, you also need to add the field to
// kDBOptionsExcluded, and maybe add customized verification for it.
TEST_F(OptionsSettableTest, DBOptionsAllFieldsSettable) {
const OffsetGap kDBOptionsExcluded = {
{offsetof(struct DBOptions, env), sizeof(Env*)},
{offsetof(struct DBOptions, rate_limiter),
sizeof(std::shared_ptr<RateLimiter>)},
{offsetof(struct DBOptions, sst_file_manager),
sizeof(std::shared_ptr<SstFileManager>)},
{offsetof(struct DBOptions, info_log), sizeof(std::shared_ptr<Logger>)},
{offsetof(struct DBOptions, statistics),
sizeof(std::shared_ptr<Statistics>)},
{offsetof(struct DBOptions, db_paths), sizeof(std::vector<DbPath>)},
{offsetof(struct DBOptions, db_log_dir), sizeof(std::string)},
{offsetof(struct DBOptions, wal_dir), sizeof(std::string)},
{offsetof(struct DBOptions, write_buffer_manager),
sizeof(std::shared_ptr<WriteBufferManager>)},
{offsetof(struct DBOptions, listeners),
sizeof(std::vector<std::shared_ptr<EventListener>>)},
{offsetof(struct DBOptions, row_cache), sizeof(std::shared_ptr<Cache>)},
{offsetof(struct DBOptions, wal_filter), sizeof(const WalFilter*)},
{offsetof(struct DBOptions, file_checksum_gen_factory),
sizeof(std::shared_ptr<FileChecksumGenFactory>)},
};
char* options_ptr = new char[sizeof(DBOptions)];
// Count padding bytes by setting all bytes in the memory to a special char,
// copy a well constructed struct to this memory and see how many special
// bytes left.
DBOptions* options = new (options_ptr) DBOptions();
FillWithSpecialChar(options_ptr, sizeof(DBOptions), kDBOptionsExcluded);
// It based on the behavior of compiler that padding bytes are not changed
// when copying the struct. It's prone to failure when compiler behavior
// changes. We verify there is unset bytes to detect the case.
*options = DBOptions();
int unset_bytes_base =
NumUnsetBytes(options_ptr, sizeof(DBOptions), kDBOptionsExcluded);
ASSERT_GT(unset_bytes_base, 0);
options->~DBOptions();
options = new (options_ptr) DBOptions();
FillWithSpecialChar(options_ptr, sizeof(DBOptions), kDBOptionsExcluded);
char* new_options_ptr = new char[sizeof(DBOptions)];
DBOptions* new_options = new (new_options_ptr) DBOptions();
FillWithSpecialChar(new_options_ptr, sizeof(DBOptions), kDBOptionsExcluded);
// Need to update the option string if a new option is added.
ASSERT_OK(
GetDBOptionsFromString(*options,
"wal_bytes_per_sync=4295048118;"
"delete_obsolete_files_period_micros=4294967758;"
"WAL_ttl_seconds=4295008036;"
"WAL_size_limit_MB=4295036161;"
"max_write_batch_group_size_bytes=1048576;"
"wal_dir=path/to/wal_dir;"
"db_write_buffer_size=2587;"
"max_subcompactions=64330;"
"table_cache_numshardbits=28;"
"max_open_files=72;"
"max_file_opening_threads=35;"
"max_background_jobs=8;"
"base_background_compactions=3;"
"max_background_compactions=33;"
"use_fsync=true;"
"use_adaptive_mutex=false;"
"max_total_wal_size=4295005604;"
"compaction_readahead_size=0;"
"new_table_reader_for_compaction_inputs=false;"
"keep_log_file_num=4890;"
"skip_stats_update_on_db_open=false;"
"skip_checking_sst_file_sizes_on_db_open=false;"
"max_manifest_file_size=4295009941;"
"db_log_dir=path/to/db_log_dir;"
"skip_log_error_on_recovery=true;"
"writable_file_max_buffer_size=1048576;"
"paranoid_checks=true;"
"track_and_verify_wals_in_manifest=true;"
"is_fd_close_on_exec=false;"
"bytes_per_sync=4295013613;"
"strict_bytes_per_sync=true;"
"enable_thread_tracking=false;"
"recycle_log_file_num=0;"
"create_missing_column_families=true;"
"log_file_time_to_roll=3097;"
"max_background_flushes=35;"
"create_if_missing=false;"
"error_if_exists=true;"
"delayed_write_rate=4294976214;"
"manifest_preallocation_size=1222;"
"allow_mmap_writes=false;"
"stats_dump_period_sec=70127;"
"stats_persist_period_sec=54321;"
"persist_stats_to_disk=true;"
"stats_history_buffer_size=14159;"
"allow_fallocate=true;"
"allow_mmap_reads=false;"
"use_direct_reads=false;"
"use_direct_io_for_flush_and_compaction=false;"
"max_log_file_size=4607;"
"random_access_max_buffer_size=1048576;"
"advise_random_on_open=true;"
"fail_if_options_file_error=false;"
"enable_pipelined_write=false;"
"unordered_write=false;"
"allow_concurrent_memtable_write=true;"
"wal_recovery_mode=kPointInTimeRecovery;"
"enable_write_thread_adaptive_yield=true;"
"write_thread_slow_yield_usec=5;"
"write_thread_max_yield_usec=1000;"
"access_hint_on_compaction_start=NONE;"
"info_log_level=DEBUG_LEVEL;"
"dump_malloc_stats=false;"
"allow_2pc=false;"
"avoid_flush_during_recovery=false;"
"avoid_flush_during_shutdown=false;"
"allow_ingest_behind=false;"
"preserve_deletes=false;"
"concurrent_prepare=false;"
"two_write_queues=false;"
"manual_wal_flush=false;"
"seq_per_batch=false;"
"atomic_flush=false;"
"avoid_unnecessary_blocking_io=false;"
"log_readahead_size=0;"
"write_dbid_to_manifest=false;"
"best_efforts_recovery=false;"
"max_bgerror_resume_count=2;"
"bgerror_resume_retry_interval=1000000",
new_options));
ASSERT_EQ(unset_bytes_base, NumUnsetBytes(new_options_ptr, sizeof(DBOptions),
kDBOptionsExcluded));
options->~DBOptions();
new_options->~DBOptions();
delete[] options_ptr;
delete[] new_options_ptr;
}
template <typename T1, typename T2>
inline int offset_of(T1 T2::*member) {
static T2 obj;
return int(size_t(&(obj.*member)) - size_t(&obj));
}
// If the test fails, likely a new option is added to ColumnFamilyOptions
// but it cannot be set through GetColumnFamilyOptionsFromString(), or the
// test is not updated accordingly.
// After adding an option, we need to make sure it is settable by
// GetColumnFamilyOptionsFromString() and add the option to the input
// string passed to GetColumnFamilyOptionsFromString()in this test.
// If it is a complicated type, you also need to add the field to
// kColumnFamilyOptionsExcluded, and maybe add customized verification
// for it.
TEST_F(OptionsSettableTest, ColumnFamilyOptionsAllFieldsSettable) {
// options in the excluded set need to appear in the same order as in
// ColumnFamilyOptions.
const OffsetGap kColumnFamilyOptionsExcluded = {
{offset_of(&ColumnFamilyOptions::inplace_callback),
sizeof(UpdateStatus(*)(char*, uint32_t*, Slice, std::string*))},
{offset_of(
&ColumnFamilyOptions::memtable_insert_with_hint_prefix_extractor),
sizeof(std::shared_ptr<const SliceTransform>)},
{offset_of(&ColumnFamilyOptions::compression_per_level),
sizeof(std::vector<CompressionType>)},
{offset_of(
&ColumnFamilyOptions::max_bytes_for_level_multiplier_additional),
sizeof(std::vector<int>)},
{offset_of(&ColumnFamilyOptions::memtable_factory),
sizeof(std::shared_ptr<MemTableRepFactory>)},
{offset_of(&ColumnFamilyOptions::table_properties_collector_factories),
sizeof(ColumnFamilyOptions::TablePropertiesCollectorFactories)},
{offset_of(&ColumnFamilyOptions::comparator), sizeof(Comparator*)},
{offset_of(&ColumnFamilyOptions::merge_operator),
sizeof(std::shared_ptr<MergeOperator>)},
{offset_of(&ColumnFamilyOptions::compaction_filter),
sizeof(const CompactionFilter*)},
{offset_of(&ColumnFamilyOptions::compaction_filter_factory),
sizeof(std::shared_ptr<CompactionFilterFactory>)},
{offset_of(&ColumnFamilyOptions::prefix_extractor),
sizeof(std::shared_ptr<const SliceTransform>)},
{offset_of(&ColumnFamilyOptions::snap_refresh_nanos), sizeof(uint64_t)},
{offset_of(&ColumnFamilyOptions::table_factory),
sizeof(std::shared_ptr<TableFactory>)},
{offset_of(&ColumnFamilyOptions::cf_paths), sizeof(std::vector<DbPath>)},
{offset_of(&ColumnFamilyOptions::compaction_thread_limiter),
sizeof(std::shared_ptr<ConcurrentTaskLimiter>)},
{offset_of(&ColumnFamilyOptions::sst_partitioner_factory),
sizeof(std::shared_ptr<SstPartitionerFactory>)},
};
char* options_ptr = new char[sizeof(ColumnFamilyOptions)];
// Count padding bytes by setting all bytes in the memory to a special char,
// copy a well constructed struct to this memory and see how many special
// bytes left.
ColumnFamilyOptions* options = new (options_ptr) ColumnFamilyOptions();
FillWithSpecialChar(options_ptr, sizeof(ColumnFamilyOptions),
kColumnFamilyOptionsExcluded);
// It based on the behavior of compiler that padding bytes are not changed
// when copying the struct. It's prone to failure when compiler behavior
// changes. We verify there is unset bytes to detect the case.
*options = ColumnFamilyOptions();
// Deprecatd option which is not initialized. Need to set it to avoid
// Valgrind error
options->max_mem_compaction_level = 0;
int unset_bytes_base = NumUnsetBytes(options_ptr, sizeof(ColumnFamilyOptions),
kColumnFamilyOptionsExcluded);
ASSERT_GT(unset_bytes_base, 0);
options->~ColumnFamilyOptions();
options = new (options_ptr) ColumnFamilyOptions();
FillWithSpecialChar(options_ptr, sizeof(ColumnFamilyOptions),
kColumnFamilyOptionsExcluded);
// Following options are not settable through
// GetColumnFamilyOptionsFromString():
options->rate_limit_delay_max_milliseconds = 33;
options->compaction_options_universal = CompactionOptionsUniversal();
options->hard_rate_limit = 0;
options->soft_rate_limit = 0;
options->num_levels = 42; // Initialize options for MutableCF
options->purge_redundant_kvs_while_flush = false;
options->max_mem_compaction_level = 0;
options->compaction_filter = nullptr;
options->sst_partitioner_factory = nullptr;
char* new_options_ptr = new char[sizeof(ColumnFamilyOptions)];
ColumnFamilyOptions* new_options =
new (new_options_ptr) ColumnFamilyOptions();
FillWithSpecialChar(new_options_ptr, sizeof(ColumnFamilyOptions),
kColumnFamilyOptionsExcluded);
// Need to update the option string if a new option is added.
ASSERT_OK(GetColumnFamilyOptionsFromString(
*options,
"compaction_filter_factory=mpudlojcujCompactionFilterFactory;"
"table_factory=PlainTable;"
"prefix_extractor=rocksdb.CappedPrefix.13;"
"comparator=leveldb.BytewiseComparator;"
"compression_per_level=kBZip2Compression:kBZip2Compression:"
"kBZip2Compression:kNoCompression:kZlibCompression:kBZip2Compression:"
"kSnappyCompression;"
"max_bytes_for_level_base=986;"
"bloom_locality=8016;"
"target_file_size_base=4294976376;"
"memtable_huge_page_size=2557;"
"max_successive_merges=5497;"
"max_sequential_skip_in_iterations=4294971408;"
"arena_block_size=1893;"
"target_file_size_multiplier=35;"
"min_write_buffer_number_to_merge=9;"
"max_write_buffer_number=84;"
"write_buffer_size=1653;"
"max_compaction_bytes=64;"
"max_bytes_for_level_multiplier=60;"
"memtable_factory=SkipListFactory;"
"compression=kNoCompression;"
"compression_opts=5:6:7:8:9:true;"
"bottommost_compression_opts=4:5:6:7:8:true;"
"bottommost_compression=kDisableCompressionOption;"
"level0_stop_writes_trigger=33;"
"num_levels=99;"
"level0_slowdown_writes_trigger=22;"
"level0_file_num_compaction_trigger=14;"
"compaction_filter=urxcqstuwnCompactionFilter;"
"soft_rate_limit=530.615385;"
"soft_pending_compaction_bytes_limit=0;"
"max_write_buffer_number_to_maintain=84;"
"max_write_buffer_size_to_maintain=2147483648;"
"merge_operator=aabcxehazrMergeOperator;"
"memtable_prefix_bloom_size_ratio=0.4642;"
"memtable_whole_key_filtering=true;"
"memtable_insert_with_hint_prefix_extractor=rocksdb.CappedPrefix.13;"
"check_flush_compaction_key_order=false;"
"paranoid_file_checks=true;"
"force_consistency_checks=true;"
"inplace_update_num_locks=7429;"
"optimize_filters_for_hits=false;"
"level_compaction_dynamic_level_bytes=false;"
"inplace_update_support=false;"
"compaction_style=kCompactionStyleFIFO;"
"compaction_pri=kMinOverlappingRatio;"
"hard_pending_compaction_bytes_limit=0;"
"disable_auto_compactions=false;"
"report_bg_io_stats=true;"
"ttl=60;"
"periodic_compaction_seconds=3600;"
"sample_for_compression=0;"
"enable_blob_files=true;"
"min_blob_size=256;"
"blob_file_size=1000000;"
"blob_compression_type=kBZip2Compression;"
"compaction_options_fifo={max_table_files_size=3;allow_"
"compaction=false;};",
new_options));
ASSERT_EQ(unset_bytes_base,
NumUnsetBytes(new_options_ptr, sizeof(ColumnFamilyOptions),
kColumnFamilyOptionsExcluded));
ColumnFamilyOptions rnd_filled_options = *new_options;
options->~ColumnFamilyOptions();
new_options->~ColumnFamilyOptions();
delete[] options_ptr;
delete[] new_options_ptr;
// Test copying to mutabable and immutable options and copy back the mutable
// part.
const OffsetGap kMutableCFOptionsExcluded = {
{offset_of(&MutableCFOptions::prefix_extractor),
sizeof(std::shared_ptr<const SliceTransform>)},
{offset_of(&MutableCFOptions::max_bytes_for_level_multiplier_additional),
sizeof(std::vector<int>)},
{offset_of(&MutableCFOptions::max_file_size),
sizeof(std::vector<uint64_t>)},
};
// For all memory used for options, pre-fill every char. Otherwise, the
// padding bytes might be different so that byte-wise comparison doesn't
// general equal results even if objects are equal.
const char kMySpecialChar = 'x';
char* mcfo1_ptr = new char[sizeof(MutableCFOptions)];
FillWithSpecialChar(mcfo1_ptr, sizeof(MutableCFOptions),
kMutableCFOptionsExcluded, kMySpecialChar);
char* mcfo2_ptr = new char[sizeof(MutableCFOptions)];
FillWithSpecialChar(mcfo2_ptr, sizeof(MutableCFOptions),
kMutableCFOptionsExcluded, kMySpecialChar);
// A clean column family options is constructed after filling the same special
// char as the initial one. So that the padding bytes are the same.
char* cfo_clean_ptr = new char[sizeof(ColumnFamilyOptions)];
FillWithSpecialChar(cfo_clean_ptr, sizeof(ColumnFamilyOptions),
kColumnFamilyOptionsExcluded);
rnd_filled_options.num_levels = 66;
ColumnFamilyOptions* cfo_clean = new (cfo_clean_ptr) ColumnFamilyOptions();
MutableCFOptions* mcfo1 =
new (mcfo1_ptr) MutableCFOptions(rnd_filled_options);
ColumnFamilyOptions cfo_back = BuildColumnFamilyOptions(*cfo_clean, *mcfo1);
MutableCFOptions* mcfo2 = new (mcfo2_ptr) MutableCFOptions(cfo_back);
ASSERT_TRUE(CompareBytes(mcfo1_ptr, mcfo2_ptr, sizeof(MutableCFOptions),
kMutableCFOptionsExcluded));
cfo_clean->~ColumnFamilyOptions();
mcfo1->~MutableCFOptions();
mcfo2->~MutableCFOptions();
delete[] mcfo1_ptr;
delete[] mcfo2_ptr;
delete[] cfo_clean_ptr;
}
#endif // !__clang__
#endif // OS_LINUX || OS_WIN
#endif // !ROCKSDB_LITE
} // namespace ROCKSDB_NAMESPACE
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
#ifdef GFLAGS
ParseCommandLineFlags(&argc, &argv, true);
#endif // GFLAGS
return RUN_ALL_TESTS();
}
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