alloc

node-alloc

 

Buddy allocator backed by a Buffer.

This is likely less efficient than allocating new Buffers and letting them be garbage-collected. You should probably never use this for anything serious, unless you are confident that this will solve your very particular problem, or you simply miss the good ol' days of manual memory management.

Install

npm install alloc

Use

Configure a new buddy allocator. Optional minSize can be used to limit the smallest block that the allocator will allocate (defaults to 1); any requests for fewer than minSize bytes will still use up a minSize block.

var BuddyAllocator = require('alloc').BuddyAllocator;
var buddy = new BuddyAllocator(16384, {minSize: 16});

Allocate some blocks, and remember to free them later.

var block = buddy.alloc(960);
buddy.free(block);

Keep an eye on internal fragmentation with powerful analytics tools!

var frag = buddy.bytesWasted / buddy.bytesAllocated;
console.log('Internal fragmentation: %d%%', frag * 100);

License

The MIT License (MIT)

Copyright (c) 2014 Simon Ratner

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.