1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

Warp: Facebook Open-Sources A Super Fast C/C++ Pre-Processor

Free Software

Published on 31 March 2014 11:51 AM EDT
Written by Michael Larabel in Free Software
20 Comments

Following Facebook's announcement of the Hack language and being one of the organizations backing the new WebScaleSQL, Facebook developers ended out last week by announcing Warp, their latest open-source contribution.

Warp is a C/C++ pre-processor that aims to be as fast as possible. The Warp pre-processor aims to be much faster than GCC's pre-processor. As explained in a new Facebook post:
Conventional wisdom has it that preprocessing time is a negligible part of building a C++ binary. C++ is notoriously difficult to parse, which means that C++ parsers tend to be large and slow compared to their counterparts for other languages. Code generation is also quite the time sink, especially if you're using optimizations. Finally, linking is a large serial step at the end of each build, and using the gold linker only helps so much. Therefore, it would seem that the lowly task of going through the included files and expanding macros would take a comparatively short time and be essentially impossible to improve upon.

Not so! Replacing gcc's preprocessor with warp has led to significant improvements of our end-to-end build times (including linking). Depending on a variety of circumstances, we measured debug build speed improvements ranging from 10% all the way to 40%, all in complex projects with massive codebases and many dependencies. That's not per-file speed, but rather global times measured for scenarios like "build after changing a header file."
The code to the Warp pre-processor has been open-sourced via GitHub. Those wishing to learn more about this C/C++ pre-processor can find details at length via the Facebook post announcement.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Linux Hardware Reviews
  1. Intel Xeon E5-1680 v3 & E5-2687W v3 Compared To The Core i7 5960X On Linux
  2. Intel 120GB 530 Series SSD Linux Performance
  3. Btrfs/EXT4/XFS/F2FS RAID 0/1/5/6/10 Linux Benchmarks On Four SSDs
  4. AMD's Windows Catalyst Driver Remains Largely Faster Than Linux Drivers
Latest Linux Articles
  1. Mesa Git Yields Performance Improvements For Newer AMD GPUs
  2. Apple OS X 10.10 vs. Ubuntu 14.10 Performance
  3. Mesa 10.5-devel Brings Some Intel Haswell HD Graphics Changes Over Mesa 10.3
  4. NVIDIA vs. Nouveau Drivers With Linux 3.18 + Mesa 10.4-devel
Latest Linux News
  1. Qt 5.4 Planned For Release On 9 December
  2. Meizu's Ubuntu Phone Not Expected Until Early Next Year
  3. DragonFlyBSD 4.0 Drops i386 Support, Improves Graphics
  4. Expensive "Free/Libre Software Laptop" Uses A NVIDIA GPU
  5. QEMU 2.2-rc3 Released, Final Release Pushed Back By Couple Days
  6. 64-bit ARM FreeBSD Support Is Taking Shape
  7. GCW Zero Starts Seeing New Game Releases
  8. Intel's Cherry Trail Delayed To Next Year
  9. Bq Introduces More Android Devices, But Still No Ubuntu Phones
  10. Qt 5.4 Release Candidate Expected Later This Week
Latest Forum Discussions
  1. Updated and Optimized Ubuntu Free Graphics Drivers
  2. Hurrican SDL Port
  3. Roadmap to Catalyst 14.10 ?
  4. how to configure module phoromatic ?
  5. PulseAudio 6.0 Is Coming & Other Linux Audio Plans For The Future
  6. Debian Developer Resigns From The Systemd Maintainership Team
  7. Cant get working Kaveri APU - A10-7850k
  8. Script for Fan Speed Control