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Reduce CPU usage. Fixes #98

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This commit is contained in:
Morten Nielsen 2021-12-22 13:52:24 -08:00
parent 75646f49c5
commit 6681b8e92c
1 changed files with 3 additions and 0 deletions
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3
src/NmeaParser/BufferedStreamDevice.cs
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@ -165,6 +165,7 @@ namespace NmeaParser
private BurstEmulationSettings m_settings;
private CancellationTokenSource m_tcs;
private Task m_readTask;
private AutoResetEvent m_dataAvailableEvent = new AutoResetEvent(false);
/// <summary>
/// Initializes a new instance of the <see cref="BufferedStream"/> class.
@ -232,6 +233,7 @@ namespace NmeaParser
m_buffer.CopyTo(newBuffer, 0);
bytes.CopyTo(newBuffer, m_buffer.Length);
m_buffer = newBuffer;
m_dataAvailableEvent.Set();
}
var delay = bytes.Length * 10d / m_settings.EmulatedBaudRate; // 8 bits + 1 parity + 1 stop bit = 10bits per byte;
@ -286,6 +288,7 @@ namespace NmeaParser
/// <inheritdoc />
public override int Read(byte[] buffer, int offset, int count)
{
m_dataAvailableEvent.WaitOne();
lock (lockObj)
{
if (this.m_buffer.Length <= count)