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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).
#include "rocksdb/memory_allocator.h"
#include "memory/jemalloc_nodump_allocator.h"
#include "memory/memkind_kmem_allocator.h"
#include "rocksdb/utilities/customizable_util.h"
#include "rocksdb/utilities/object_registry.h"
#include "rocksdb/utilities/options_type.h"
#include "utilities/memory_allocators.h"
namespace ROCKSDB_NAMESPACE {
namespace {
static std::unordered_map<std::string, OptionTypeInfo> ma_wrapper_type_info = {
{"target", OptionTypeInfo::AsCustomSharedPtr<MemoryAllocator>(
0, OptionVerificationType::kByName, OptionTypeFlags::kNone)},
};
static int RegisterBuiltinAllocators(ObjectLibrary& library,
const std::string& /*arg*/) {
library.AddFactory<MemoryAllocator>(
DefaultMemoryAllocator::kClassName(),
[](const std::string& /*uri*/, std::unique_ptr<MemoryAllocator>* guard,
std::string* /*errmsg*/) {
guard->reset(new DefaultMemoryAllocator());
return guard->get();
});
library.AddFactory<MemoryAllocator>(
CountedMemoryAllocator::kClassName(),
[](const std::string& /*uri*/, std::unique_ptr<MemoryAllocator>* guard,
std::string* /*errmsg*/) {
guard->reset(new CountedMemoryAllocator(
std::make_shared<DefaultMemoryAllocator>()));
return guard->get();
});
library.AddFactory<MemoryAllocator>(
JemallocNodumpAllocator::kClassName(),
[](const std::string& /*uri*/, std::unique_ptr<MemoryAllocator>* guard,
std::string* errmsg) {
if (JemallocNodumpAllocator::IsSupported(errmsg)) {
JemallocAllocatorOptions options;
guard->reset(new JemallocNodumpAllocator(options));
}
return guard->get();
});
library.AddFactory<MemoryAllocator>(
MemkindKmemAllocator::kClassName(),
[](const std::string& /*uri*/, std::unique_ptr<MemoryAllocator>* guard,
std::string* errmsg) {
if (MemkindKmemAllocator::IsSupported(errmsg)) {
guard->reset(new MemkindKmemAllocator());
}
return guard->get();
});
size_t num_types;
return static_cast<int>(library.GetFactoryCount(&num_types));
}
} // namespace
MemoryAllocatorWrapper::MemoryAllocatorWrapper(
const std::shared_ptr<MemoryAllocator>& t)
: target_(t) {
RegisterOptions("", &target_, &ma_wrapper_type_info);
}
Status MemoryAllocator::CreateFromString(
const ConfigOptions& options, const std::string& value,
std::shared_ptr<MemoryAllocator>* result) {
static std::once_flag once;
std::call_once(once, [&]() {
RegisterBuiltinAllocators(*(ObjectLibrary::Default().get()), "");
});
ConfigOptions copy = options;
copy.invoke_prepare_options = true;
return LoadManagedObject<MemoryAllocator>(copy, value, result);
}
} // namespace ROCKSDB_NAMESPACE
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