Valgrind这个名字取自北欧神话中英灵殿的入口。
Valgrind的最初作者是Julian Seward，他于2006年由于在开发Valgrind上的工作获得了第二届Google-O’Reilly开源代码奖。
Valgrind遵守GNU通用公共许可证条款，是一款自由软件。
官网链接
下载与安装
下载地址：
http://www.valgrind.org/downloads/valgrind-3.11.0.tar.bz2
安装：
wget http://www.valgrind.org/downloads/valgrind-3.11.0.tar.bz2
cd valgrind-3.8.1
./configure --prefix=/usr/local/webserver/valgrind
make
make installfedora 22 快速安装方式：
dnf install -y valgrind试用：
编译
gcc -g -o test C.cpp内存检查
valgrind --tool=memcheck --leak-check=yes --show-reachable=yes ./C结果
[fedora@localhost C]$ valgrind --tool=memcheck --leak-check=yes --show-reachable=yes ./Debug/CTMPServer20160413
==2923== Memcheck, a memory error detector
==2923== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.
==2923== Using Valgrind-3.10.1 and LibVEX; rerun with -h for copyright info
==2923== Command: ./Debug/C
Read the configuration file
==2923== Mismatched free() / delete / delete []
==2923== at 0x4A08184: operator delete(void*) (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==2923== by 0x4054E3: readfile(int) (text.cc:156)
==2923== by 0x40E7A0: global::parseFile(char*) (global.cc:238)
==2923== by 0x40E165: global::global(char*, short, bool, char*, char*, char*) (global.cc:160)
==2923== by 0x40F345: larbin(char*, short, bool, char*, char*, char*) (larbin.cc:69)
==2923== by 0x40F6DE: main (C.cpp:25)
==2923== Address 0x68e9b50 is 0 bytes inside a block of size 512 alloc'd
==2923== by 0x40F6DE: main (C.cpp:25)
==2923== Invalid write of size 4
==2923== at 0x406098: url::url(char*) (url.cc:219)
==2923== by 0x4032E9: PersistentFifo::tryGet() (PersistentFifo.cc:98)说明
Invalid write of size 4：表示数组越界写了4字节
文档：
下载地址
http://www.valgrind.org/docs/download_docs.html
Valgrind 中包含的 Memcheck 工具可以检查以下的程序错误：
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 after it has been free’d)
使用超过malloc分配的内存空间(Reading/writing off the end of malloc’d blocks)
对堆栈的非法访问 (Reading/writing inappropriate areas on the stack)
申请的空间是否有释放 (Memory leaks – where pointers to malloc’d blocks are lost forever)
malloc/free/new/delete申请和释放内存的匹配(Mismatched use of malloc/new/new [] vs free/delete/delete [])
src和dst的重叠(Overlapping src and dst pointers in memcpy() and related functions)
重复free
其他情况还不清楚，等待后续添加
