mirror of
https://github.com/kidfromjupiter/nearby.git
synced 2026-09-15 07:06:11 -04:00
Alexey Polyudov
ce4807935e
Signed-off-by: Alexey Polyudov <apolyudov@google.com> Change-Id: Ic2bdb234e89f3c5860d1b483dd4bce689f13d057
50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
// Copyright 2020 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef PLATFORM_API_SETTABLE_FUTURE_H_
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#define PLATFORM_API_SETTABLE_FUTURE_H_
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#include "platform/api/listenable_future.h"
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#include "platform/base/exception.h"
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namespace location {
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namespace nearby {
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namespace api {
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// A SettableFuture is a type of Future whose result can be set.
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//
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// https://google.github.io/guava/releases/20.0/api/docs/com/google/common/util/concurrent/SettableFuture.html
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template <typename T>
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class SettableFuture : public ListenableFuture<T> {
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public:
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~SettableFuture() override = default;
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// Completes the future successfully. The value is returned to any waiters.
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// Returns true, if value was set.
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// Returns false, if Future is already in "done" state.
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virtual bool Set(T value) = 0;
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// Completes the future unsuccessfully. The exception value is returned to any
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// waiters.
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// Returns true, if exception was set.
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// Returns false, if Future is already in "done" state.
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virtual bool SetException(Exception exception) = 0;
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};
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} // namespace api
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} // namespace nearby
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} // namespace location
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#endif // PLATFORM_API_SETTABLE_FUTURE_H_
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