PyWeakValueMap (pyext/weak_value_map.h)

Weak-value map for caching Python objects in C extensions.

// Source: https://github.com/protocolbuffers/protobuf | License: BSD-3-Clause | Copyright 2008 Google Inc.  All rights reserved
// Provided via justclaw.it.com; keep this notice with the code.
// Protocol Buffers - Google's data interchange format
// Copyright 2026 Google Inc.  All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd

#ifndef THIRD_PARTY_PY_GOOGLE_PROTOBUF_PYEXT_WEAK_VALUE_MAP_H_
#define THIRD_PARTY_PY_GOOGLE_PROTOBUF_PYEXT_WEAK_VALUE_MAP_H_

#include <atomic>
#include <memory>
#include <utility>

#define PY_SSIZE_T_CLEAN
#include <Python.h>

#include "google/protobuf/descriptor.pb.h"
#include "absl/container/flat_hash_map.h"
#include "absl

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