#tool-checkmemory

##How to Use it ###Step 1. include memcheck.h in file

#include "memcheck.h"

###Step 2. in main function,load my_init(); you can also print your own info,but make sure start with *

#include "memcheck.h"
    int main(){
    	my_init();
        char* ptr= (char*)malloc(4696);
    	//to do
    	print("****start main****\n");
    }

###Step 3. run program,make sure the the infomation printed on a log file, then modify the parameter $logs to your log file name in check.sh

logs=~/logs/20170220.out //your log file

the logs will like:

malloc 0x83c2128 from   0x804b418 size 4696
****start main****
malloc 0x83c2140 from   0xb79b29ad size 11
free   0x83bf518 from   0x4ee876
free   0x83bd510 from   0xb79b26b8
free   0x83bf680 from   0xb79b2fcc
malloc 0x83bd510 from   0xb79b3da6 size  7
realloc0x83bba60 from   0xb79c31be size  117 oldptr  0x83bba60
free   0x83bd510 from   0xb78ed599
free   0x83bba50 from   0xb79c3b6a

###Step 4. run check.sh,then it will print where malloc/realloc but without free,like this:

0x8425f00 6201 0x804b418  4696
****start main****

every column present %addr% %log line% %caller% %size%

it means that code at 0x804b418,where malloc heap size of 4696 without free

###Step 5. use addr2line ,find the source line

[cindyhua@dev-SpyTux-68 tool-memcheck]$addr2line -e a.out -f 0x804b418
main                       
/main.c:4