我正在使用 pthread 库编写一个程序。当我使用命令valgrind --leak-check=full运行我的程序时，我得到以下错误描述：
==11784==
==11784== **HEAP SUMMARY:**
==11784== in use at exit: 4,952 bytes in 18 blocks
==11784== total heap usage: 1,059 allocs, 1,041 frees, 51,864 bytes allocated
==11784==
==11784== **288 bytes** in 1 blocks are possibly lost in loss record 2 of 3
==11784== at 0x4C2380C: calloc (vg_replace_malloc.c:467)
==11784== by 0x4010D2E: _dl_allocate_tls (dl-tls.c:300)
==11784== by 0x55DC218: **pthread_create**@@GLIBC_2.2.5 (allocatestack.c:570)
==11784== by 0x401BC0: initdevice(char*) (in /a/fr-01/vol/home/stud/lim/workspace /Ex3/l)
==11784== by 0x406D05: main (in /a/fr-01/vol/home/stud/lim/workspace/Ex3/l)
==11784==
==11784== **4,608 bytes** in 16 blocks are possibly lost in loss record 3 of 3
==11784== at 0x4C2380C: calloc (vg_replace_malloc.c:467)
==11784== by 0x4010D2E: _dl_allocate_tls (dl-tls.c:300)
==11784== by 0x55DC218: **pthread_create**@@GLIBC_2.2.5 (allocatestack.c:570)
==11784== by 0x40268F: write2device(char*, int) (in /a/fr-01/vol/home/stud/lim/workspace/Ex3/l)
==11784== by 0x406D7B: main (in /a/fr-01/vol/home/stud/lim/workspace/Ex3/l)
==11784==
==11784== **LEAK SUMMARY:**
==11784== definitely lost: 0 bytes in 0 blocks
==11784== indirectly lost: 0 bytes in 0 blocks
==11784== possibly lost: 4,896 bytes in 17 blocks
==11784== still reachable: 56 bytes in 1 blocks
==11784== suppressed: 0 bytes in 0 blocks
==11784== Reachable blocks (those to which a pointer was found) are not shown.
==11784== To see them, rerun with: --leak-check=full --show-reachable=yes
==11784==
==11784== For counts of detected and suppressed errors, rerun with: -v
==11784== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 4 from 4)
每次调用pthread_create时，使用某个函数-我在函数末尾调用函数pthread_exit。所以，在验证这不是问题之后，可能是什么问题？
线程的资源不会在终止时立即释放，除非线程是在detach state属性设置为PTHREAD_CREATE_DETACHED的情况下创建的，或者为其pthread_t调用pthread_detach。
未分离的线程将保持终止状态，直到其标识符传递给pthread_join或pthread_detach。
总结一下，你有三个选择：
创建具有分离属性集的线程（PTHREAD_CREATE_DETACHED 属性）
创建后分离线程（通过调用pthread_detach），或
加入终止的线程以回收它们（通过调用pthread_join）。
Hth.
当不使用可连接线程时，退出线程需要调用pthread_detach(pthread_self())以释放其所有资源。
你可以让线程in detached state，以避免内存泄漏，如果线程不应该加入（或只是到期的自己）。
为了明确地创建一个可连接或分离的线程，使用 pthread_create () 例程中的 attr 参数。
声明pthread_attr_t数据类型的 pthread 属性变量
用pthread_attr_init()初始化属性变量
将属性分离状态设置为pthread_attr_setdetachstate()
完成后，pthread_attr_destroy()属性使用的免费库资源
除了其他用户给您的正确答案外，我建议您阅读以下内容：
Tracking down a memory leak in multithreaded C application本站系公益性非盈利分享网址，本文来自用户投稿，不代表边看边学立场，如若转载，请注明出处
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