public void ShouldVerifyBufferAlignment()
{
var buffer = new UnsafeBuffer(BufferUtil.AllocateDirect(1024));
try
{
buffer.VerifyAlignment();
}
catch (InvalidOperationException ex)
{
Assert.Fail("All buffers should be aligned " + ex);
}
}
public void ShouldVerifyBufferAlignment()
{
var buffer = new UnsafeBuffer(new byte[1024]);
try
{
buffer.VerifyAlignment();
}
catch (InvalidOperationException ex)
{
Assert.Fail("All buffers should be aligned " + ex);
}
}
public LogBuffers(string logFileName, MapMode mapMode)
{
var fileInfo = new FileInfo(logFileName);
var logLength = fileInfo.Length;
var termLength = LogBufferDescriptor.ComputeTermLength(logLength);
LogBufferDescriptor.CheckTermLength(termLength);
_termLength = termLength;
// if log length exceeds MAX_INT we need multiple mapped buffers, (see FileChannel.map doc).
if (logLength < int.MaxValue)
{
var mappedBuffer = IoUtil.MapExistingFile(logFileName, mapMode);
_mappedByteBuffers = new[] { mappedBuffer };
for (var i = 0; i < LogBufferDescriptor.PARTITION_COUNT; i++)
{
termBuffers[i] = new UnsafeBuffer(mappedBuffer.Pointer, i * termLength, termLength);
}
logMetaDataBuffer = new UnsafeBuffer(mappedBuffer.Pointer, (int)(logLength - LogBufferDescriptor.LOG_META_DATA_LENGTH), LogBufferDescriptor.LOG_META_DATA_LENGTH);
}
else
{
_mappedByteBuffers = new MappedByteBuffer[LogBufferDescriptor.PARTITION_COUNT + 1];
var memoryMappedFile = IoUtil.OpenMemoryMappedFile(logFileName, mapMode);
for (var i = 0; i < LogBufferDescriptor.PARTITION_COUNT; i++)
{
_mappedByteBuffers[i] = new MappedByteBuffer(memoryMappedFile, termLength * (long)i, termLength);
termBuffers[i] = new UnsafeBuffer(_mappedByteBuffers[i].Pointer, 0, termLength);
}
var metaDataMappedBuffer = new MappedByteBuffer(memoryMappedFile, logLength - LogBufferDescriptor.LOG_META_DATA_LENGTH, LogBufferDescriptor.LOG_META_DATA_LENGTH);
_mappedByteBuffers[_mappedByteBuffers.Length - 1] = metaDataMappedBuffer;
logMetaDataBuffer = new UnsafeBuffer(metaDataMappedBuffer.Pointer, 0, LogBufferDescriptor.LOG_META_DATA_LENGTH);
}
// TODO try/catch
foreach (var buffer in termBuffers)
{
buffer.VerifyAlignment();
}
logMetaDataBuffer.VerifyAlignment();
}
public void ShouldThrowExceptionWhenBufferNotAligned()
{
var buffer = new UnsafeBuffer(new byte[1024], 1, 1023);
buffer.VerifyAlignment();
}