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41 results

Timespec.cs

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  • Timespec.cs 2.22 KiB
    using System;
    using System.Runtime.InteropServices;
    using System.Threading;
    
    namespace Google.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;
    
            [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();
    
            // TODO: revisit this.
    		// 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 System.IntPtr tv_nsec;
    
    		/// <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();
                }
            }
    
            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) {