public void PumpLargeDataSetThroughTinyBuffer()
{
using (UnmanagedCircularBuffer ncb = UnmanagedCircularBuffer.Create(memoryStart, UnmanagedCircularBuffer.SynchronizationOverheadSize + 3)) {
byte[] data = new byte[10000];
byte[] data2 = new byte[10000];
for (int i = 0; i < data.Length; i++)
{
data[i] = unchecked ((byte)(i + 1));
}
DoParallel(
delegate {
using (Stream w = ncb.CreateWritingStream()) {
w.Write(data, 0, data.Length);
}
},
delegate {
using (Stream r = ncb.CreateReadingStream()) {
int count = 0;
while (count < data2.Length)
{
count += r.Read(data2, count, data2.Length - count);
}
}
});
Assert.AreEqual(data, data2);
}
}
public void WriteAndReadFromBuffer()
{
using (UnmanagedCircularBuffer ncb = UnmanagedCircularBuffer.Create(memoryStart, memoryLength)) {
using (Stream ws = ncb.CreateWritingStream()) {
using (Stream rs = ncb.CreateReadingStream()) {
ws.WriteByte(0x42);
Assert.AreEqual(0x42, rs.ReadByte());
}
}
}
}
public void WriteToFullBufferCausesTimeout()
{
using (UnmanagedCircularBuffer ncb = UnmanagedCircularBuffer.Create(memoryStart, UnmanagedCircularBuffer.SynchronizationOverheadSize + 3)) {
using (Stream s = ncb.CreateWritingStream()) {
s.WriteTimeout = 100;
try {
s.WriteByte(1);
s.WriteByte(2);
} catch (TimeoutException) {
Assert.Fail("The first two calls should work");
}
s.WriteByte(3);
}
}
}
public void WriteAndReadFromBufferUsingMemoryMappedFile()
{
using (MemoryMappedFile mmf1 = MemoryMappedFile.CreateSharedMemory("Local\\TestMemory", 1024)) {
using (UnmanagedMemory view1 = mmf1.MapView(0, 1024)) {
using (UnmanagedCircularBuffer ncb = UnmanagedCircularBuffer.Create(view1.Start, (int)view1.Length)) {
using (Stream ws = ncb.CreateWritingStream()) {
ws.WriteByte(0x42);
}
using (MemoryMappedFile mmf2 = MemoryMappedFile.Open("Local\\TestMemory")) {
using (UnmanagedMemory view2 = mmf1.MapView(0, 1024)) {
Assert.AreNotEqual(view1.Start, view2.Start);
using (UnmanagedCircularBuffer ncb2 = UnmanagedCircularBuffer.Open(view2.Start)) {
using (Stream rs = ncb2.CreateReadingStream()) {
Assert.AreEqual(0x42, rs.ReadByte());
}
}
}
}
}
}
}
}