emeryberger / Heap-Layers

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Copyright (C) 2000 - 2018 by Emery Berger

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Heap Layers provides a flexible infrastructure for composing high-performance memory allocators out of C++ layers. Heap Layers makes it easy to write high-quality custom and general-purpose memory allocators. Heap Layers has been used successfully to build a number of high-performance allocators, including Hoard and DieHard.

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For an introduction to Heap Layers, read the article Policy-Based Memory Allocation, by Andrei Alexandrescu and Emery Berger. It's a good overview. See also "Memory Allocation: Either Love It or Hate It (or just think it’s okay)", a talk by Andrei.

Heap Layers contains a number of ready-made heap components that can be plugged together with minimal effort, and the result is often faster than hand-built allocators. The PLDI 2001 paper Composing High-Performance Memory Allocators has plenty of examples.

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Heap Layers can substantially outperform its only real competitor, the Vmalloc package from AT&T. The OOPSLA 2002 paper Reconsidering Custom Memory Allocation paper has more details.

Not only is Heap Layers much higher level and simpler to use, but its use of templates also improves performance. Heap Layers both eliminates the function call overhead imposed by Vmalloc layers and yields higher quality code by exposing more optimization opportunities.

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@inproceedings{DBLP:conf/pldi/BergerZM01,
  author    = {Emery D. Berger and
               Benjamin G. Zorn and
               Kathryn S. McKinley},
  title     = {Composing High-Performance Memory Allocators},
  booktitle = {Proceedings of the 2001 {ACM} {SIGPLAN} Conference on Programming
               Language Design and Implementation (PLDI), Snowbird, Utah, USA, June
               20-22, 2001},
  pages     = {114--124},
  year      = {2001},
  crossref  = {DBLP:conf/pldi/2001},
  url       = {http://doi.org/10.1145/378795.378821},
  doi       = {10.1145/378795.378821},
  timestamp = {Wed, 14 Nov 2018 10:54:59 +0100},
  biburl    = {http://dblp.org/rec/bib/conf/pldi/BergerZM01},
  bibsource = {dblp computer science bibliography, http://dblp.org}
}

@proceedings{DBLP:conf/pldi/2001,
  editor    = {Michael Burke and
               Mary Lou Soffa},
  title     = {Proceedings of the 2001 {ACM} {SIGPLAN} Conference on Programming
               Language Design and Implementation (PLDI), Snowbird, Utah, USA, June
               20-22, 2001},
  publisher = {{ACM}},
  year      = {2001},
  url       = {http://dl.acm.org/citation.cfm?id=378795},
  isbn      = {1-58113-414-2},
  timestamp = {Mon, 21 May 2012 16:19:53 +0200},
  biburl    = {http://dblp.org/rec/bib/conf/pldi/2001},
  bibsource = {dblp computer science bibliography, http://dblp.org}
}