cppcheck/tools
Frank Zingsheim 6ba2534f32 Fixed #6716 (Performance: Alternative String Representation in Match Compiler)
Quickfix of tools/test_matchcompiler.py for Alternative String Representation
_matchStrs does not exist in Match Compiler anymore.
2015-06-07 20:24:33 +02:00
..
argparse.py autopep8 formatting 2013-10-18 17:35:59 +02:00
aws.py PEP8 fixes. 2014-03-11 17:42:14 +02:00
ci.py PEP8 fixes. 2015-04-20 21:11:45 +03:00
cppcheckdata.py PEP8 fixes. 2015-04-20 21:11:45 +03:00
daca2-download.py PEP8 fixes. 2015-04-20 21:11:45 +03:00
daca2-report.py daca2-report: handle \r also 2015-04-29 17:23:24 +02:00
daca2.py PEP8 fixes. 2015-04-20 21:11:45 +03:00
dmake.cpp dmake: suppress Wsign-compare warnings in release builds 2015-05-02 10:29:52 +02:00
dmake.vcproj Tools: Update VS project file. 2011-08-11 23:40:10 +03:00
extracttests.py Updated copyright year to 2015 2015-01-03 12:14:58 +01:00
matchcompiler.py Fixed #6716 (Performance: Alternative String Representation in Match Compiler) 2015-06-07 16:18:40 +02:00
parse-glibc.py PEP8 fixes. 2015-04-20 21:11:45 +03:00
readme.md Fixed typo in travis script and tools/readme.md, no functional change. 2014-04-13 23:17:41 +02:00
reduce.cpp reduce: fix cppcheck style remark about CppcheckExecutor not being explicit. 2015-04-07 01:58:10 +02:00
test_matchcompiler.py Fixed #6716 (Performance: Alternative String Representation in Match Compiler) 2015-06-07 20:24:33 +02:00
test_showtimetop5.sh Trim tailing spaces and convert tabs to spaces. 2014-03-18 17:00:28 +02:00
times-tags.sh make tools/times-tags.sh and tools/times.sh executable (mode 755). 2014-01-05 13:58:59 +01:00
times.c tools/times: modified script to allow longer dataseries 2013-07-21 13:16:34 +02:00
times.sh times.sh: create a variable which can be changed to alter the iterations/how often we run cppcheck on one commit (default: 4). 2014-08-31 11:10:55 +02:00
tools.pro Add general PRO file for console builds. 2012-06-18 09:28:32 +03:00

readme.md

Cppcheck developer and build tools

* tools/matchcompiler.py

The matchcompiler.py is a build script that performs a few code transformations to .cpp files under the lib directory. These transformations are related to the use of Token::Match() function and are intended to improve code performance. The transformed files are saved on the build directory. This tool is silently used when building the code with SRCDIR=build, that is:

$ cd path/to/cppcheck
$ make SRCDIR=build

Here is a simple example of the matchcompiler.py optimization. Suppose there is a file example.cpp under lib/:

// lib/example.cpp
void f1() {
    Token::Match(tok, "abc");
}

void f2() {
    const char *abc = "abc";
    Token::Match(tok, abc);
}

If you manually run matchcompiler.py from the main directory:

$ cd path/to/cppcheck
$ python tools/matchcompiler.py

A file example.cpp will be generated on the build directory:

// build/example.cpp
#include "token.h"
#include "errorlogger.h"
#include <string>
#include <cstring>
static const std::string matchStr1("abc");
// pattern: abc
static bool match1(const Token* tok) {
    if (!tok || !(tok->str()==matchStr1)/* abc */)
        return false;
    return true;
}
void f1() {
    match1(tok);
}

void f2() {
    const char *abc = "abc";
    Token::Match(tok, abc);
}

From this we can see that the usage of Token::Match() in f1() has been optimized, whereas the one in f2() couldn't be optimized (the string wasn't inline on the Token::Match() call). The developer doesn't need to use this tool during development but should be aware of these optimizations. Building with this optimization, cppcheck can get a boost of 2x of speed-up.

* tools/dmake.cpp

Automatically generates the main Makefile for Cppcheck (the main Makefile should not be modified manually). To build and run the dmake tool execute:

$ cd path/to/cppcheck
$ make dmake
$ ./dmake

* tools/reduce.cpp

Cppcheck tool that reduces code for a hang/false positive. To build the tool run:

$ cd path/to/cppcheck
$ make reduce

* tools/times.sh

Script to generate a times.log file that contains timing information of the last 20 revisions.