| #region Copyright notice and license |
| // 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. |
| #endregion |
| using System; |
| using System.Runtime.InteropServices; |
| using System.Threading; |
| |
| namespace Grpc.Core.Internal |
| { |
| /// <summary> |
| /// gpr_timespec from grpc/support/time.h |
| /// </summary> |
| [StructLayout(LayoutKind.Sequential)] |
| internal struct Timespec |
| { |
| const int NanosPerSecond = 1000 * 1000 * 1000; |
| const int NanosPerTick = 100; |
| |
| static readonly DateTime UnixEpoch = new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc); |
| |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern Timespec gprsharp_now(); |
| |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern Timespec gprsharp_inf_future(); |
| |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern int gprsharp_sizeof_timespec(); |
| |
| public Timespec(IntPtr tv_sec, int tv_nsec) |
| { |
| this.tv_sec = tv_sec; |
| this.tv_nsec = tv_nsec; |
| this.clock_type = GPRClockType.Realtime; |
| } |
| |
| // NOTE: on linux 64bit sizeof(gpr_timespec) = 16, on windows 32bit sizeof(gpr_timespec) = 8 |
| // so IntPtr seems to have the right size to work on both. |
| public System.IntPtr tv_sec; |
| public int tv_nsec; |
| public GPRClockType clock_type; |
| |
| /// <summary> |
| /// Timespec a long time in the future. |
| /// </summary> |
| public static Timespec InfFuture |
| { |
| get |
| { |
| return gprsharp_inf_future(); |
| } |
| } |
| |
| public static Timespec Now |
| { |
| get |
| { |
| return gprsharp_now(); |
| } |
| } |
| |
| public DateTime ToDateTime() |
| { |
| return UnixEpoch.AddTicks(tv_sec.ToInt64() * (NanosPerSecond / NanosPerTick) + tv_nsec / NanosPerTick); |
| } |
| |
| internal static int NativeSize |
| { |
| get |
| { |
| return gprsharp_sizeof_timespec(); |
| } |
| } |
| |
| /// <summary> |
| /// Creates a GPR deadline from current instant and given timeout. |
| /// </summary> |
| /// <returns>The from timeout.</returns> |
| public static Timespec DeadlineFromTimeout(TimeSpan timeout) |
| { |
| if (timeout == Timeout.InfiniteTimeSpan) |
| { |
| return Timespec.InfFuture; |
| } |
| return Timespec.Now.Add(timeout); |
| } |
| |
| public Timespec Add(TimeSpan timeSpan) |
| { |
| long nanos = (long)tv_nsec + (timeSpan.Ticks % TimeSpan.TicksPerSecond) * NanosPerTick; |
| long overflow_sec = (nanos > NanosPerSecond) ? 1 : 0; |
| |
| Timespec result; |
| result.tv_nsec = (int)(nanos % NanosPerSecond); |
| result.tv_sec = new IntPtr(tv_sec.ToInt64() + (timeSpan.Ticks / TimeSpan.TicksPerSecond) + overflow_sec); |
| result.clock_type = GPRClockType.Realtime; |
| return result; |
| } |
| } |
| } |