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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 <folly/synchronization/ParkingLot.h>
#include <array>
namespace folly {
namespace parking_lot_detail {
Bucket& Bucket::bucketFor(uint64_t key) {
constexpr size_t const kNumBuckets = 4096;
// Statically allocating this lets us use this in allocation-sensitive
// contexts. This relies on the assumption that std::mutex won't dynamically
// allocate memory, which we assume to be the case on Linux and iOS.
static Indestructible<std::array<Bucket, kNumBuckets>> gBuckets;
return (*gBuckets)[key % kNumBuckets];
}
std::atomic<uint64_t> idallocator{0};
} // namespace parking_lot_detail
} // namespace folly
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