Line data    Source code

       1             : /*
       2             :  *
       3             :  * Copyright 2015, Google Inc.
       4             :  * All rights reserved.
       5             :  *
       6             :  * Redistribution and use in source and binary forms, with or without
       7             :  * modification, are permitted provided that the following conditions are
       8             :  * met:
       9             :  *
      10             :  *     * Redistributions of source code must retain the above copyright
      11             :  * notice, this list of conditions and the following disclaimer.
      12             :  *     * Redistributions in binary form must reproduce the above
      13             :  * copyright notice, this list of conditions and the following disclaimer
      14             :  * in the documentation and/or other materials provided with the
      15             :  * distribution.
      16             :  *     * Neither the name of Google Inc. nor the names of its
      17             :  * contributors may be used to endorse or promote products derived from
      18             :  * this software without specific prior written permission.
      19             :  *
      20             :  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      21             :  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      22             :  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      23             :  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
      24             :  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
      25             :  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
      26             :  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      27             :  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      28             :  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      29             :  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
      30             :  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      31             :  *
      32             :  */
      33             : 
      34             : #ifndef GRPCXX_SUPPORT_TIME_H
      35             : #define GRPCXX_SUPPORT_TIME_H
      36             : 
      37             : #include <grpc++/support/config.h>
      38             : 
      39             : namespace grpc {
      40             : 
      41             : /* If you are trying to use CompletionQueue::AsyncNext with a time class that
      42             :    isn't either gpr_timespec or std::chrono::system_clock::time_point, you
      43             :    will most likely be looking at this comment as your compiler will have
      44             :    fired an error below. In order to fix this issue, you have two potential
      45             :    solutions:
      46             : 
      47             :      1. Use gpr_timespec or std::chrono::system_clock::time_point instead
      48             :      2. Specialize the TimePoint class with whichever time class that you
      49             :         want to use here. See below for two examples of how to do this.
      50             :  */
      51             : 
      52             : template <typename T>
      53             : class TimePoint {
      54             :  public:
      55             :   TimePoint(const T& time) { you_need_a_specialization_of_TimePoint(); }
      56             :   gpr_timespec raw_time() {
      57             :     gpr_timespec t;
      58             :     return t;
      59             :   }
      60             : 
      61             :  private:
      62             :   void you_need_a_specialization_of_TimePoint();
      63             : };
      64             : 
      65             : template <>
      66             : class TimePoint<gpr_timespec> {
      67             :  public:
      68        2045 :   TimePoint(const gpr_timespec& time) : time_(time) {}
      69        2045 :   gpr_timespec raw_time() { return time_; }
      70             : 
      71             :  private:
      72             :   gpr_timespec time_;
      73             : };
      74             : 
      75             : }  // namespace grpc
      76             : 
      77             : #ifndef GRPC_CXX0X_NO_CHRONO
      78             : 
      79             : #include <chrono>
      80             : 
      81             : #include <grpc/support/time.h>
      82             : 
      83             : namespace grpc {
      84             : 
      85             : // from and to should be absolute time.
      86             : void Timepoint2Timespec(const std::chrono::system_clock::time_point& from,
      87             :                         gpr_timespec* to);
      88             : void TimepointHR2Timespec(
      89             :     const std::chrono::high_resolution_clock::time_point& from,
      90             :     gpr_timespec* to);
      91             : 
      92             : std::chrono::system_clock::time_point Timespec2Timepoint(gpr_timespec t);
      93             : 
      94             : template <>
      95             : class TimePoint<std::chrono::system_clock::time_point> {
      96             :  public:
      97     3422788 :   TimePoint(const std::chrono::system_clock::time_point& time) {
      98     3422788 :     Timepoint2Timespec(time, &time_);
      99     3415965 :   }
     100     3440685 :   gpr_timespec raw_time() const { return time_; }
     101             : 
     102             :  private:
     103             :   gpr_timespec time_;
     104             : };
     105             : 
     106             : }  // namespace grpc
     107             : 
     108             : #endif  // !GRPC_CXX0X_NO_CHRONO
     109             : 
     110             : #endif  // GRPCXX_SUPPORT_TIME_H