怎么查内存泄漏 linux

sudo apt-get install valgrind
valgrind --tool=memcheck --leak-check=full ./your_program

==1234== Memcheck, a memory error detector
==1234== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==1234== Using Valgrind-3.15.0 and LibVEX; rerun with -h for copyright info
==1234== Command: ./your_program
==1234==
==1234== Invalid write of size 4
==1234==    at 0x4005E6: main (in /path/to/your_program)
==1234==  Address 0x51fc040 is 0 bytes inside a block of size 10 alloc'd
==1234==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==1234==    by 0x4005B6: main (in /path/to/your_program)
==1234==
==1234== LEAK SUMMARY:
==1234==    definitely lost: 10 bytes in 1 blocks
==1234==      possibly lost: 0 bytes in 0 blocks
==1234==    still reachable: 0 bytes in 0 blocks
==1234==         suppressed: 0 bytes in 0 blocks
==1234==
==1234== For lists of detected and suppressed errors, rerun with: -s
==1234== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)

pmap -x <pid>

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sudo apt-get install smem
smem -P your_program_name

#include <stdio.h>
#include <stdlib.h>

void leak_memory() {
    int *ptr = (int *)malloc(sizeof(int));
    // 忘记释放内存
}

int main() {
    for (int i = 0; i < 1000; ++i) {
        leak_memory();
    }
    return 0;
}

valgrind --tool=memcheck --leak-check=full ./your_program