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Diffstat (limited to 'include/grpc++/support/time.h')
-rw-r--r-- | include/grpc++/support/time.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/include/grpc++/support/time.h b/include/grpc++/support/time.h new file mode 100644 index 0000000000..2d4196b93b --- /dev/null +++ b/include/grpc++/support/time.h @@ -0,0 +1,110 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef GRPCXX_SUPPORT_TIME_H +#define GRPCXX_SUPPORT_TIME_H + +#include <grpc++/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: + TimePoint(const T& time) { you_need_a_specialization_of_TimePoint(); } + gpr_timespec raw_time() { + gpr_timespec t; + return t; + } + + private: + void you_need_a_specialization_of_TimePoint(); +}; + +template <> +class TimePoint<gpr_timespec> { + public: + TimePoint(const gpr_timespec& time) : time_(time) {} + gpr_timespec raw_time() { return time_; } + + private: + gpr_timespec time_; +}; + +} // namespace grpc + +#ifndef GRPC_CXX0X_NO_CHRONO + +#include <chrono> + +#include <grpc/support/time.h> + +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: + 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 // !GRPC_CXX0X_NO_CHRONO + +#endif // GRPCXX_SUPPORT_TIME_H |