valgrind Syscall param writebuf points to uninitialised bytes
http://blog.donews.com/idlecat511/archive/2006/02/21/736877.aspx 今天dot.kde登了一篇对valgrind的作者 Jonathan Riddell 的 访谈 。我作为valgrind的老用户，当年调程序时获益很多，在这篇访谈里进一步长了见识，深感有必要把这个优秀的开发工具介绍给诸位。以下内容多翻译自该访谈（意译啦）。 啥是valgrind valgrind是帮助程序员寻找程序里的bug和改进程序性能的工具。程序通过valgrind运行时，valgrind收...
by lxcrist - Linux文档专区 - 2009-04-23 17:12:50 阅读（747） 回复（0）
Linux c++上常用内存泄露检测工具有valgrind, Rational purify。valgrind免费。valgrind 可以在 32 位或 64 位 PowerPC/Linux 内核上工作。 valgrind工具包包含多个工具，如Memcheck,Cachegrind,Helgrind, Callgrind，Massif。下面分别介绍个工具的作用： Memcheck 工具主要检查下面的程序错误： • 使用未初始化的内存 (Use of uninitialised memory) • 使用已经释放了的内存 (Reading/writing memory a...
http://valgrind.org/docs/manual/quick-start.html 本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u/10295/showart_255254.html
Mount points A mount point is a directory which a device or partition is attached to. During your install you may need to choose mount points for specific filesystems. You will need to set the mountpoint of "/" for your root filesystem on the disk partition you are installing your system to. For example if you are installing your system on the second partition of an IDE drive, you will select the ...
在FC6下增加了一个系统调用，调用号是318，重新编译内核后 编写代码： …… ret ＝ syscall(318,s_name,len,SIGUSR ); …… 编译后执行，ret为－1， s_name ,len , SIGUSR是新系统调用318的三个参数。 用strace跟踪可执行程序，有如下信息： SYS_318(0x84bb008,0x2,0xa,0x307824,0x1)=-1, ENOSYS(Function not implemented) 请大侠们指点是何原因不执行syscall(). [ 本帖最后由 skywh_2001 于 2008-1-10 10:47 编辑 ]
boot -> kernel -> initrd 本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u/24796/showart_195201.html
奇怪阿。。 /usr/portage/distfiles/下的tar.bz2文件若少于9930bytes emerge xxx 文件，不管文件有没有在distfiles目录中，都要重新下载。。 本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u/712/showart_105486.html
There are two RP mechanisms supported by Cisco router: Cisco's Auto-RPPIMv2 Bootstrap router Auto-RP (Cisco Proprietory) ======= 1. Messages in Auto-RP mechanism Cisco-RP-Discovery (224.0.1.40) All routers join this group to get the RP-group mapping information, mapping agent send RP-Discovery message to 224.0.1.40 Cisco-RP-Announce (224.0.1.39) Mapping agent joins this group to get candid...
Study points for the RHCE Exam HTTP/HTTPS SMB NFS FTP Web proxy SMTP IMAP, IMAPS, and POP3 SSH DNS For each of these services, RHCEs must be able to: install the packages needed to provide the service (install rpm of service) configure the service to start when the system is booted (configure service and specify run-level) configure the service for basic operation (the service for basic ...
Study points for the RHCE Exam Study points for the RHCE Exam Prerequisite skills for RHCT and RHCE Candidates should possess the following skills, as they may be necessary in order to fulfill requirements of the RHCT and RHCE exams: • use standard command line tools (e.g., ls, cp, mv, rm, tail, cat, etc.) to create, remove, view, and investigate files and directories • use grep, s...
