weak_ptr_internal.cc

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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#include "flutter/fml/memory/weak_ptr_internal.h"
 
#include "flutter/fml/logging.h"
 
namespace fml {
namespace internal {
 
WeakPtrFlag::WeakPtrFlag() : is_valid_(true) {}
 
WeakPtrFlag::~WeakPtrFlag() {
  // Should be invalidated before destruction.
  FML_DCHECK(!is_valid_);
}
 
void WeakPtrFlag::Invalidate() {
  // Invalidation should happen exactly once.
  FML_DCHECK(is_valid_);
  is_valid_ = false;
}
 
}  // namespace internal
}  // namespace fml