Help optimizing UnCompress for gzipped files

[Steven Schveighoffer]

On 1/3/18 3:28 PM, Steven Schveighoffer wrote:

> Stay tuned, there will be updates to iopipe to hopefully make it as fast 
> in this microbenchmark as the C version :)

v0.0.3 has been released. To take advantage of using malloc/realloc, you 
can use std.experimental.allocator.mallocator.Mallocator as the 
BufferManager's allocator.

e.g.:

auto myPipe = openDev("file.gz").bufd // not here
       .unzip!Mallocator;              // here

myPipe.ensureElems(); // this works now.

auto bytesRead = myPipe.window.length;

The reason you don't need it on the first bufd is because that is the 
buffer of the file stream, which isn't going to grow.

Note: the buffer manager does not free the data on destruction! You are 
responsible for freeing it (if you use Mallocator).

-Steve