Pork: Difference between revisions
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* MQ extension for hg is recommended. Alternatively, quilt can be used instead. | * MQ extension for hg is recommended. Alternatively, quilt can be used instead. | ||
=== | === Pork Tools === | ||
Pork is broken down into tools that focus on a specific tasks. The tools can rarely be combined and thus should be applied incrementally. | Pork is broken down into tools that focus on a specific tasks. The tools can rarely be combined and thus should be applied incrementally. | ||
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* [[PorkVM]] is a CentOS virtual machine image with a presetup pork + moz checkout. | * [[PorkVM]] is a CentOS virtual machine image with a presetup pork + moz checkout. | ||
* [[PorkBarrel]] is a multiplexer(ala make -j) for the pork tools. It can combine patch output for patch-producing tools and save per-file output for DeHydra. The repository also contains a frontend to do nightly runs of prcheck. | |||
=== Differences from Mainstream === | === Differences from Mainstream === | ||
In addition to adding more oink tools, pork has some differences in Elsa and Elkhound. | In addition to adding more oink tools, pork has some differences in Elsa and Elkhound. | ||
Revision as of 20:01, 12 November 2007
Pork is a set of tools built around the elsa C/C++ parser. The primary focus of pork is to provide automated refactoring (Gecko:DeCOMtamination) and static analysis tools for Mozilla2. Pork announcement.
To install the tools on your regular machine, follow Static Analysis/Installing the Oink Stack
Pork is a fork of oink. In the future pork should become a development branch for oink.
More info for pork can be found on Taras' blog.
Requirements
- GCC 3.4.x or older that can successfully build Mozilla. 64bit Ubuntu, 32bit RHEL/CentOS are known to work. 32bit Ubuntu/Debian feature a linker bug that prevents Mozilla from building with gcc 3.4.6.
- MCPP is required for refactoring tools
- SpiderMonkey is required by DeHydra
- Bison and Flex
- patchutils are recommended to manage manual and automatic patches
- MQ extension for hg is recommended. Alternatively, quilt can be used instead.
Pork Tools
Pork is broken down into tools that focus on a specific tasks. The tools can rarely be combined and thus should be applied incrementally.
- DeHydra is a scriptable static analysis tool. It is useful for finding patterns in the codebase. It has been used to find bugs, produce class diagrams and to infer auto-refactoring candidates in the code.
- Outparamdel rewrites code using outparameters to utilize the return value instead. Blog entry
- Prcheck is a static analysis tool which produces patches as output. It is useful for correcting bugs that resulting PRBool behaving more like an int than a C++ bool. Blog entry
- Garburator rewrites nsCOMPtrs allocated on the stack into stack variables to assist the XPCOMGC project.Blog entry
- Squash is now obsolete. It was primarily written to explore how elsa can be utilized to assist with Gecko:DeCOMtamination. Many rewriting strategies and patching code were first implemented in squash.
- PorkVM is a CentOS virtual machine image with a presetup pork + moz checkout.
- PorkBarrel is a multiplexer(ala make -j) for the pork tools. It can combine patch output for patch-producing tools and save per-file output for DeHydra. The repository also contains a frontend to do nightly runs of prcheck.
Differences from Mainstream
In addition to adding more oink tools, pork has some differences in Elsa and Elkhound.
- Elkhound has been extended to provide end-of-node position information
- Elsa mods:
- Expression AST nodes were modified to include end-of-node info + associated bugfixes
- Elsa has been extended to support MCPP's macro-undo(-K) mode. Additional APIs were added to convert post-preprocessing source coordinates into pre-preprocessing ones