www.carfield.com.hk: c

How to have good C code -

- Be Disciplined About Namespace Management
- Clearly Document Published APIs
- Keep Data Types Abstract
- Use Polymorphism Judiciously
- Prefer Modularisation Over Conditional Compilation
- The Best Way to Modularise a Large C Codebase is Don't Have a Large C Codebase!

http://www.natpryce.com/articles/000799.html

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Sat Jul 13 10:02:24 GMT 2013 From /weblog/languages/c

ide

http://programmers.stackexchange.com[..]-lightweight-c-editor-or-ide-for-windows

13 Linux Debuggers for C++ Reviewed - http://www.drdobbs.com[..]icleId=240156817&siteSectionName=testing

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Sun Nov 04 02:01:04 GMT 2012 From /weblog/languages/c

compiler

Template variable name lookup explain - http://groups.google.com[..]+/browse_thread/thread/e8755b9cb8f0fd61#

How link work, and how to debug if thing doesn't work - http://www.thegeekstuff.com/2011/10/gcc-linking

How to create static / dynamic library - http://www.lainoox.com/c-shared-libraries-static-dynamic/

GCC - http://www.thegeekstuff.com/2012/10/gcc-compiler-options/

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Sun Oct 28 01:42:16 GMT 2012 From /weblog/languages/c

network

Sample code of flooding network with raw socket - http://www.lainoox.com/c-syn-flood-raw-socket/

C99 socket programming - http://gustedt.wordpress.com[..]m/2011/10/24/socket-programming-and-c99/

How to Perform Packet Sniffing Using Libpcap with C Example Code - http://www.thegeekstuff.com[..]m/2012/10/packet-sniffing-using-libpcap/

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Wed Aug 29 23:41:07 GMT 2012 From /weblog/languages/c

concurrency

Lightweight thread, actually a simple greem thread - http://www.sics.se/~adam/pt/index.html http://www.sics.se/~adam/pt/pt-1.4-refman/ http://drdobbs.com[..]int?articleId=229601338&siteSectionName=

How Fork work - http://stackoverflow.com[..]1/how-is-fork-working-when-children-fork

Comparing OpenMP and Intel TBB - http://www.ddj.com[..]UQSNDLPCKHSCJUNN2JVN?articleID=214303519

Tutorial about TBB - http://software.intel.com[..]es-with-intel-threading-building-blocks/

Multi-thread optimzated malloc - http://groups.google.com[..]wse_thread/thread/c1ec1fa08c744a8c?hl=en

Introduction to 2 static analysis tool to check OpenMP potential issue, like racing condition - http://software.intel.com[..]tudio-vivamp-and-intel-cc-parallel-lint/

Light weigth lock provide by Linux kernal - http://lwn.net/Articles/360699/

http://software.intel.com[..]uilding-blocks-openmp-or-native-threads/

OpenMP vs. POSIX - http://www.dalkescientific.com[..]/2012/01/13/openmp_vs_posix_threads.html

OpenACC - http://www.drdobbs.com[..]cleId=240006334&siteSectionName=parallel

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Tue Aug 21 14:56:25 GMT 2012 From /weblog/languages/c

profiler

gprof - http://www.ibm.com/developerworks/library/l-gnuprof.html http://www.thegeekstuff.com/2012/08/gprof-tutorial/

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Sat Jul 28 04:01:37 GMT 2012 From /weblog/languages/c

make

Make alternatives - http://freecode.com/articles/make-alternatives

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Thu Jun 07 16:54:50 GMT 2012 From /weblog/languages/c

cuda

Using CUDA with Java - http://www.javacodegeeks.com/2011/09/gpgpu-java-programming.html

C library that allow programmer use the power of NVIDIA GPUs

http://www.nvidia.com/object/cuda_home.html
http://www.ddj.com[..]articleID=207200659&dept_url=/architect/
http://www.ddj.com[..]ept_url=/hpc-high-performance-computing/
http://www.ddj.com[..]ept_url=/hpc-high-performance-computing/

CUDA Data Parallel Primitives Library - http://www.ddj.com[..]ept_url=/hpc-high-performance-computing/

CUDA tutorial - http://www.ddj.com/architect/207200659

http://www.infoq.com/presentations/Introduction-to-CUDA-C

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Wed May 09 16:29:56 GMT 2012 From /weblog/languages/c

security

Security coding standard for C - http://www.drdobbs.com[..]8_h&elq=71bc323bdc004bfc8091ce3238c093a2

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Wed Apr 25 16:02:07 GMT 2012 From /weblog/languages/c

system

How to add file in /proc - http://www.thegeekstuff.com/2012/04/create-proc-files

Basic about unix signal - http://www.thegeekstuff.com/2012/03/linux-signals-fundamentals/

limitation of select call - http://www.moythreads.com[..]009/12/22/select-system-call-limitation/

Give hint to kernal about how use swap memory - http://linux.die.net/man/2/madvise

Recursive ls - http://synesis.com.au/software/recls/

Socket programming tutorial - http://www.codedanger.com/caglar/?p=210 http://simplestcodings.com/2011/01/18/ping/

Discussion about making flush() reliable - http://groups.google.com[..]wse_thread/thread/71da1187ec3b0445?hl=en

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Sun Apr 01 13:02:15 GMT 2012 From /weblog/languages

cobol

Where will cobol go? - http://www.javaworld.com[..]s-legacy-could-be-lost.html&site=jw_core

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Thu Mar 01 14:25:13 GMT 2012 From /weblog/languages/c

memory issue

Problem of malloc, and introduction to some improved version - http://betathoughts.blogspot.com/2010/02/history-of-malloc.html

Personal memo about C++ memory management, from a Java developer, contain some rule of thumb tips - http://karussell.wordpress.com[..]c-trying-to-understand-memory-mangement/

Tutorial of valgrind - http://www.thegeekstuff.com/2011/11/valgrind-memcheck/

Disucssion of GC in C++ - http://herbsutter.com[..]10/25/garbage-collection-synopsis-and-c/

Core dump with few variable declaration removed - http://techblog.rosedu.org/c-extern-internals.html

Tracking memory allocation - http://jfdube.wordpress.com[..]-management-part-2-allocations-tracking/

We have a process running fine for several years and recently have core dump everytime starting it up. here is the stacktrace:

(gdb) backtrace
#0 0xfe34251c in realfree () from /lib/libc.so.1
#1 0xfe342e28 in cleanfree () from /lib/libc.so.1
#2 0xfe341f5c in _malloc_unlocked () from /lib/libc.so.1
#3 0xfe341e50 in malloc () from /lib/libc.so.1
#4 0xfe38f534 in _findbuf () from /lib/libc.so.1
#5 0xfe384f38 in _doprnt () from /lib/libc.so.1
#6 0xfe3886fc in fprintf () from /lib/libc.so.1
#7 0x164f64 in _ZN7LogBook8WriteLogEPcS0_i (this=, pType=0x5c00e8 "INFO",
pMsg=0x6b0b14 "main. Database=XXXXXX. Performing Login to XXXX. user=SYSTEM.", nFile=0) at Util.cpp:164
#8 0x164e28 in _ZN7LogBook9PromptLogEPciS0_i (this=, pType=0x5c00e8 "INFO",
nType=3, pMsg=0x0, nFile=0) at Util.cpp:136
#9 0x14a364 in main (argc=3, argv=0xffbef5bc) at XXXX.cpp:385
(gdb)

Eventaully we found out the reason is the class LogBook is singleton, and it reuse few char* buffer internally, without delete and new in between, after adding delete and new for transaction, the process run correctly, as a rule of thumb, singleton is evil for most of the cases.

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Sat Oct 15 03:37:46 GMT 2011 From /weblog/languages/c

bug

incorrect comparison of 64bit pointers - http://www.azulsystems.com[..]/2011-08-28-just-fixed-a-20-year-old-bug

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Mon Sep 26 15:59:58 GMT 2011 From /weblog/languages/c

gui

Example of using DBus - http://brunogirin.blogspot.com[..]m/2011/01/d-bus-experiments-in-vala.html

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Fri Aug 05 16:35:30 GMT 2011 From /weblog/languages/c

string

One big problem of strncpy, it doesn't allow you control the behaviour when overflow... http://blog.liw.fi/posts/strncpy/

Problem of atoi - http://www.lainoox.com/ascii-to-integer-atoi-in-c/

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Sat Jan 15 02:08:41 GMT 2011 From /weblog/languages/c

io

First Disk Seek on multi-core system - http://www.1024cores.net/home/scalable-architecture/wide-finder-2

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