justme
83e5120377
Namespaces, assemblies, projects and directories, the solution, binaries, images, systemd units, config paths, environment variables, protocol method names, the media type and the raw chunk magic all move to MoShiro/moshiro. Existing data and deployments are not compatible and must be recreated. Also fix the architecture tests after the solution layout change and make the update tests independent of their order.
27 lines
1.1 KiB
C#
27 lines
1.1 KiB
C#
namespace MoShiro.Measurement;
|
|
|
|
/// <summary>节点的单调时钟（微秒）：t1…t4、t_send、t_recv 都用它；Probe 和 Agent 各自一个，块头里的时钟锚点把它对应到 UTC。</summary>
|
|
public sealed class MonoClock
|
|
{
|
|
private readonly TimeProvider _time;
|
|
|
|
public MonoClock(TimeProvider time)
|
|
{
|
|
_time = time;
|
|
}
|
|
|
|
public TimeProvider Time => _time;
|
|
|
|
public long NowUs()
|
|
{
|
|
long ticks = _time.GetTimestamp();
|
|
// 先除后乘会丢精度，先乘再除在 64 位内不会溢出（频率通常是 1e9 或 1e7）
|
|
return (ticks / _time.TimestampFrequency * 1_000_000) + (ticks % _time.TimestampFrequency * 1_000_000 / _time.TimestampFrequency);
|
|
}
|
|
|
|
public ClockAnchor Anchor() => new(NowUs(), _time.GetUtcNow().ToUnixTimeMilliseconds());
|
|
|
|
/// <summary>单调时钟读数 <paramref name="thenUs"/> 对应的 UTC 毫秒（只用于块的粗略起点，精确时间由块头的时钟锚点换算）。</summary>
|
|
public long UtcMsAt(long thenUs) => _time.GetUtcNow().ToUnixTimeMilliseconds() - (Math.Max(0, NowUs() - thenUs) / 1000);
|
|
}
|