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90 lines
2.4 KiB
90 lines
2.4 KiB
7 years ago
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/*
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*
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* Copyright 2015 gRPC authors.
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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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* http://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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*
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*/
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#ifndef GRPCPP_IMPL_CODEGEN_TIME_H
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#define GRPCPP_IMPL_CODEGEN_TIME_H
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#include <chrono>
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#include <grpc/impl/codegen/grpc_types.h>
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#include <grpcpp/impl/codegen/config.h>
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namespace grpc {
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/** If you are trying to use CompletionQueue::AsyncNext with a time class that
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isn't either gpr_timespec or std::chrono::system_clock::time_point, you
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will most likely be looking at this comment as your compiler will have
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fired an error below. In order to fix this issue, you have two potential
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solutions:
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1. Use gpr_timespec or std::chrono::system_clock::time_point instead
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2. Specialize the TimePoint class with whichever time class that you
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want to use here. See below for two examples of how to do this.
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*/
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template <typename T>
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class TimePoint {
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public:
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TimePoint(const T& time) { you_need_a_specialization_of_TimePoint(); }
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gpr_timespec raw_time() {
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gpr_timespec t;
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return t;
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}
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private:
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void you_need_a_specialization_of_TimePoint();
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};
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template <>
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class TimePoint<gpr_timespec> {
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public:
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TimePoint(const gpr_timespec& time) : time_(time) {}
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gpr_timespec raw_time() { return time_; }
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private:
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gpr_timespec time_;
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};
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} // namespace grpc
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namespace grpc {
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// from and to should be absolute time.
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void Timepoint2Timespec(const std::chrono::system_clock::time_point& from,
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gpr_timespec* to);
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void TimepointHR2Timespec(
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const std::chrono::high_resolution_clock::time_point& from,
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gpr_timespec* to);
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std::chrono::system_clock::time_point Timespec2Timepoint(gpr_timespec t);
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template <>
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class TimePoint<std::chrono::system_clock::time_point> {
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public:
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TimePoint(const std::chrono::system_clock::time_point& time) {
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Timepoint2Timespec(time, &time_);
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}
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gpr_timespec raw_time() const { return time_; }
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private:
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gpr_timespec time_;
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};
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} // namespace grpc
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#endif // GRPCPP_IMPL_CODEGEN_TIME_H
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