pthread_create()使用detach分离后仍有内存泄漏

valgrind 工具安装使用

使用valgrind 工具检查内存泄漏

gcc -g -o out test.c -lpthread

valgrind --tool=memcheck --leak-check=full --show-reachable=yes ./out

使用了两种方案分离方案，仍存在内存泄漏情况，于是把两个分离方案测试例子列出来，希望对大家有帮助。如果有好的解决方案，请留言，多谢

pthread_join(threadid,NULL);

pthread_detach(pthread_self());

pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);

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1 无泄漏

#include<stdio.h>

#include<pthread.h>

void* test(){

sleep(2);

printf("ok\n");

}

int main(int argc, char** argv){

pthread_t threadid;

pthread_create(&threadid, NULL, test, NULL);

pthread_join(threadid,NULL);

return 1;

}

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2 泄漏

void* test(){

printf("ok\n");

}

int main(int argc, char** argv){

pthread_t threadid;

pthread_attr_t attr;

pthread_attr_init(&attr);

pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);

pthread_create(&threadid, &attr, test, NULL); 泄漏

pthread_attr_destroy(&attr);

return 1;

}

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3 无泄漏

void* test(){

printf("ok\n");

}

int main(int argc, char** argv){

pthread_t threadid;

pthread_attr_t attr;

pthread_attr_init(&attr);

pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);

pthread_create(&threadid, &attr, test, NULL); 无泄漏

sleep(1); //线程运行完成。

pthread_attr_destroy(&attr);

return 1;

}

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4 泄漏

void* test(){

sleep(2);

printf("ok\n");

}

int main(int argc, char** argv){

pthread_t threadid;

pthread_attr_t attr;

pthread_attr_init(&attr);

pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);

pthread_create(&threadid, &attr, test, NULL); 无泄漏

sleep(1);

pthread_attr_destroy(&attr);

return 1;

}

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5 泄漏

void* test(){

pthread_detach(pthread_self());

printf("ok\n");

}

int main(int argc, char** argv){

pthread_t threadid;

pthread_attr_t attr;

pthread_create(&threadid, NULL, test, NULL);

return 1;

}

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6 无泄漏

void* test(){

pthread_detach(pthread_self());

printf("ok\n");

}

int main(int argc, char** argv){

pthread_t threadid;

pthread_attr_t attr;

pthread_create(&threadid, NULL, test, NULL);无泄漏

sleep(1);

return 1;

}

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