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//
//
// Copyright 2015 gRPC authors.
//
// 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.
//
//
#ifndef GRPCPP_SUPPORT_TIME_H
#define GRPCPP_SUPPORT_TIME_H
#include <chrono>
#include <grpc/impl/grpc_types.h>
#include <grpcpp/support/config.h>
namespace grpc {
/// If you are trying to use CompletionQueue::AsyncNext with a time class that
/// isn't either gpr_timespec or std::chrono::system_clock::time_point, you
/// will most likely be looking at this comment as your compiler will have
/// fired an error below. In order to fix this issue, you have two potential
/// solutions:
/// 1. Use gpr_timespec or std::chrono::system_clock::time_point instead
/// 2. Specialize the TimePoint class with whichever time class that you
/// want to use here. See below for two examples of how to do this.
///
template <typename T>
class TimePoint {
public:
// If you see the error with methods below, you may need either
// i) using the existing types having a conversion class such as
// gpr_timespec and std::chrono::system_clock::time_point or
// ii) writing a new TimePoint<YourType> to address your case.
TimePoint(const T& /*time*/) = delete;
gpr_timespec raw_time() = delete;
};
template <>
class TimePoint<gpr_timespec> {
public:
// NOLINTNEXTLINE(google-explicit-constructor)
TimePoint(const gpr_timespec& time) : time_(time) {}
gpr_timespec raw_time() { return time_; }
private:
gpr_timespec time_;
};
} // namespace grpc
namespace grpc {
// from and to should be absolute time.
void Timepoint2Timespec(const std::chrono::system_clock::time_point& from,
gpr_timespec* to);
void TimepointHR2Timespec(
const std::chrono::high_resolution_clock::time_point& from,
gpr_timespec* to);
std::chrono::system_clock::time_point Timespec2Timepoint(gpr_timespec t);
template <>
class TimePoint<std::chrono::system_clock::time_point> {
public:
// NOLINTNEXTLINE(google-explicit-constructor)
TimePoint(const std::chrono::system_clock::time_point& time) {
Timepoint2Timespec(time, &time_);
}
gpr_timespec raw_time() const { return time_; }
private:
gpr_timespec time_;
};
} // namespace grpc
#endif // GRPCPP_SUPPORT_TIME_H
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