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#pragma clang system_header
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
#pragma once
#include "contrib/libs/apache/arrow_next/cpp/src/arrow/memory_pool.h"
#include "contrib/libs/apache/arrow_next/src/arrow/util/config.h"
namespace arrow20 {
namespace memory_pool {
namespace internal {
static constexpr int64_t kDebugXorSuffix = -0x181fe80e0b464188LL;
// A static piece of memory for 0-size allocations, so as to return
// an aligned non-null pointer. Note the correct value for DebugAllocator
// checks is hardcoded.
extern int64_t zero_size_area[1];
static uint8_t* const kZeroSizeArea = reinterpret_cast<uint8_t*>(&zero_size_area);
#ifdef ARROW_JEMALLOC
// Helper class directing allocations to the jemalloc allocator.
class JemallocAllocator {
public:
static Status AllocateAligned(int64_t size, int64_t alignment, uint8_t** out);
static Status ReallocateAligned(int64_t old_size, int64_t new_size, int64_t alignment,
uint8_t** ptr);
static void DeallocateAligned(uint8_t* ptr, int64_t size, int64_t alignment);
static void ReleaseUnused();
static void PrintStats();
};
#endif // defined(ARROW_JEMALLOC)
} // namespace internal
} // namespace memory_pool
} // namespace arrow20
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