internal static NativeHeapMemoryBlock ReadMemoryBlock(Stream stream, int start, int size)
{
var fileStream = stream as FileStream;
if (fileStream != null)
{
var block = new NativeHeapMemoryBlock(size);
bool fault = true;
try
{
stream.Seek(start, SeekOrigin.Begin);
int bytesRead;
if (!ReadFile(fileStream.SafeFileHandle, block.Pointer, size, out bytesRead, IntPtr.Zero) || bytesRead != size)
{
throw new IOException(CodeAnalysisResources.UnableToReadMetadataFile, Marshal.GetLastWin32Error());
}
fault = false;
}
finally
{
if (fault)
{
block.Dispose();
}
}
return(block);
}
else
{
var block = new NativeHeapMemoryBlock(size);
bool fault = true;
try
{
stream.Seek(start, SeekOrigin.Begin);
stream.CopyTo(block.Pointer, size);
fault = false;
}
finally
{
if (fault)
{
block.Dispose();
}
}
return(block);
}
}
internal static NativeHeapMemoryBlock ReadMemoryBlock(Stream stream, int start, int size)
{
var fileStream = stream as FileStream;
if (fileStream != null)
{
var block = new NativeHeapMemoryBlock(size);
bool fault = true;
try
{
stream.Seek(start, SeekOrigin.Begin);
int bytesRead;
if (!ReadFile(fileStream.SafeFileHandle, block.Pointer, size, out bytesRead, IntPtr.Zero) || bytesRead != size)
{
throw new IOException(CodeAnalysisResources.UnableToReadMetadataFile, Marshal.GetLastWin32Error());
}
fault = false;
}
finally
{
if (fault)
{
block.Dispose();
}
}
return block;
}
else
{
var block = new NativeHeapMemoryBlock(size);
bool fault = true;
try
{
stream.Seek(start, SeekOrigin.Begin);
stream.CopyTo(block.Pointer, size);
fault = false;
}
finally
{
if (fault)
{
block.Dispose();
}
}
return block;
}
}