1: valgrind introduce http://valgrind.org/docs/manual/mc-manual.html
2: make/run valgrind in host platform - 列表內容 - wget http://www.valgrind.org/downloads/valgrind-3.8.1.tar.bz2 - tar xvf valgrind-3.8.1.tar.bz2 - cd valgrind-3.8.1 - ./configure –PRefix=/usr/local/webserver/valgrind - make - make install
3: how to use valgrind http://blog.csdn.net/21aspnet/article/details/8172124 http://blog.csdn.net/sduliulun/article/details/7732906 http://blog.chinaunix.net/uid-23629988-id-3033741.html
#include <stdlib.h> int* func(void) { int* x = malloc(10 * sizeof(int)); x[10] = 0; //問題1: 數組下標越界 } int main(void) { int* x=NULL; x=func(); //free(x); x=NULL; return 0; //問題2: 內存沒有釋放 }編譯 $gcc -g -o test test.c
內存檢查 $ valgrind –tool=memcheck –leak-check=yes –show-reachable=yes ./test
報告:
說明 Invalid write of size 4:表示數組越界寫了4字節 40 bytes in 1 blocks:表示因程序退出而發生內存泄露40字節
文檔: Valgrind 中包含的 Memcheck 工具可以檢查以下的程序錯誤:
使用未初始化的內存 (Use of uninitialised memory) 使用已經釋放了的內存 (Reading/writing memory after it has been free’d) 使用超過malloc分配的內存空間(Reading/writing off the end of malloc’d blocks) 對堆棧的非法訪問 (Reading/writing inappropriate areas on the stack) 申請的空間是否有釋放 (Memory leaks – where pointers to malloc’d blocks are lost forever) malloc/free/new/delete申請和釋放內存的匹配(Mismatched use of malloc/new/new [] vs free/delete/delete []) src和dst的重疊(Overlapping src and dst pointers in memcpy() and related functions) 重復free
4: references http://blog.csdn.net/yangzhiloveyou/article/details/7935078 http://www.cnblogs.com/shuaihanhungry/p/5818713.html
cross compile valgrind http://www.itdadao.com/articles/c15a376180p0.html http://blog.csdn.net/roland_sun/article/details/46049485 https://gist.github.com/mnemonicflow/131eb830a4d74911bf5a https://sergiolima.Wordpress.com/2015/07/07/vallgrind-and-android-working-together/
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