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/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Utils file for any Context Hub VTS code (i.e. not specific to e.g. HIDL).
*/
#pragma once
#include <chrono>
#include <future>
namespace android {
namespace hardware {
namespace contexthub {
namespace vts_utils {
// App ID with vendor "GoogT" (Google Testing), app identifier 0x555555. This
// app ID is reserved and must never appear in the list of loaded apps.
constexpr uint64_t kNonExistentAppId = 0x476f6f6754555555;
// Helper that does explicit conversion of an enum class to its underlying/base
// type. Useful for stream output of enum values.
template <typename EnumType>
inline constexpr typename std::underlying_type<EnumType>::type asBaseType(EnumType value) {
return static_cast<typename std::underlying_type<EnumType>::type>(value);
}
// Wait for a callback to occur (signaled by the given future) up to the
// provided timeout. If the future is invalid or the callback does not come
// within the given time, returns false.
template <class ReturnType>
bool waitForCallback(std::future<ReturnType> future, ReturnType* result,
std::chrono::milliseconds timeout = std::chrono::seconds(5)) {
auto expiration = std::chrono::system_clock::now() + timeout;
EXPECT_NE(result, nullptr);
EXPECT_TRUE(future.valid());
if (result != nullptr && future.valid()) {
std::future_status status = future.wait_until(expiration);
EXPECT_NE(status, std::future_status::timeout) << "Timed out waiting for callback";
if (status == std::future_status::ready) {
*result = future.get();
return true;
}
}
return false;
}
} // namespace vts_utils
} // namespace contexthub
} // namespace hardware
} // namespace android
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