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The C and C++ Include Header Files

/usr/include/nodejs/deps/v8/include/cppgc/ephemeron-pair.h


$ cat -n /usr/include/nodejs/deps/v8/include/cppgc/ephemeron-pair.h

     1	// Copyright 2020 the V8 project authors. All rights reserved.
     2	// Use of this source code is governed by a BSD-style license that can be
     3	// found in the LICENSE file.
     4	
     5	#ifndef INCLUDE_CPPGC_EPHEMERON_PAIR_H_
     6	#define INCLUDE_CPPGC_EPHEMERON_PAIR_H_
     7	
     8	#include "cppgc/liveness-broker.h"
     9	#include "cppgc/member.h"
    10	
    11	namespace cppgc {
    12	
    13	/**
    14	 * An ephemeron pair is used to conditionally retain an object.
    15	 * The `value` will be kept alive only if the `key` is alive.
    16	 */
    17	template <typename K, typename V>
    18	struct EphemeronPair {
    19	  EphemeronPair(K* k, V* v) : key(k), value(v) {}
    20	  WeakMember<K> key;
    21	  Member<V> value;
    22	
    23	  void ClearValueIfKeyIsDead(const LivenessBroker& broker) {
    24	    if (!broker.IsHeapObjectAlive(key)) value = nullptr;
    25	  }
    26	};
    27	
    28	}  // namespace cppgc
    29	
    30	#endif  // INCLUDE_CPPGC_EPHEMERON_PAIR_H_