blob: c45926707f3006572fe6900ab80eb555b8ea6a60 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
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) {
long nanos = tv_nsec.ToInt64() + (timeSpan.Ticks % TimeSpan.TicksPerSecond) * nanosPerTick;
long overflow_sec = (nanos > nanosPerSecond) ? 1 : 0;
Timespec result;
result.tv_nsec = new IntPtr(nanos % nanosPerSecond);
result.tv_sec = new IntPtr(tv_sec.ToInt64() + (timeSpan.Ticks / TimeSpan.TicksPerSecond) + overflow_sec);
return result;
}
}
}
|
