我最近一直通过Valgrind运行我的一个应用程序,但是有一些MYSQL相关的泄漏我无法解决.我把违规代码放在最基本的形式并测试了; 我得到了同样的泄漏.我应该忽视它们还是我做错了什么?
码:
#include#include #include int main() { MYSQL *MYSQLIns; MYSQLIns = mysql_init(NULL); mysql_real_connect(MYSQLIns, "localhost", "username", "password", "database", 0, NULL, 0); mysql_close(MYSQLIns); return EXIT_SUCCESS; }
编译:
gcc -g -lmysqlclient mysql_mem_test.c -o mysql_mem_test
Valgrind输出:
valgrind --leak-check=full ./mysql_mem_test ==4601== Memcheck, a memory error detector ==4601== Copyright (C) 2002-2009, and GNU GPL'd, by Julian Seward et al. ==4601== Using Valgrind-3.5.0-Debian and LibVEX; rerun with -h for copyright info ==4601== Command: ./mysql_mem_test ==4601== ==4601== ==4601== HEAP SUMMARY: ==4601== in use at exit: 61,336 bytes in 16 blocks ==4601== total heap usage: 70 allocs, 54 frees, 109,218 bytes allocated ==4601== ==4601== 24,528 bytes in 6 blocks are possibly lost in loss record 4 of 5 ==4601== at 0x4024C1C: malloc (vg_replace_malloc.c:195) ==4601== by 0x4079BB2: my_once_alloc (in /usr/lib/libmysqlclient.so.16.0.0) ==4601== by 0x407A408: ??? (in /usr/lib/libmysqlclient.so.16.0.0) ==4601== by 0x407AED1: ??? (in /usr/lib/libmysqlclient.so.16.0.0) ==4601== by 0x407B112: get_charset_by_csname (in /usr/lib/libmysqlclient.so.16.0.0) ==4601== by 0x409D55B: mysql_init_character_set (in /usr/lib/libmysqlclient.so.16.0.0) ==4601== by 0x409F5A1: mysql_real_connect (in /usr/lib/libmysqlclient.so.16.0.0) ==4601== by 0x80485E0: main (mysql_mem_test.c:12) ==4601== ==4601== 28,616 bytes in 7 blocks are possibly lost in loss record 5 of 5 ==4601== at 0x4024C1C: malloc (vg_replace_malloc.c:195) ==4601== by 0x4079BB2: my_once_alloc (in /usr/lib/libmysqlclient.so.16.0.0) ==4601== by 0x407A3E9: ??? (in /usr/lib/libmysqlclient.so.16.0.0) ==4601== by 0x407AED1: ??? (in /usr/lib/libmysqlclient.so.16.0.0) ==4601== by 0x407B112: get_charset_by_csname (in /usr/lib/libmysqlclient.so.16.0.0) ==4601== by 0x409D55B: mysql_init_character_set (in /usr/lib/libmysqlclient.so.16.0.0) ==4601== by 0x409F5A1: mysql_real_connect (in /usr/lib/libmysqlclient.so.16.0.0) ==4601== by 0x80485E0: main (mysql_mem_test.c:12) ==4601== ==4601== LEAK SUMMARY: ==4601== definitely lost: 0 bytes in 0 blocks ==4601== indirectly lost: 0 bytes in 0 blocks ==4601== possibly lost: 53,144 bytes in 13 blocks ==4601== still reachable: 8,192 bytes in 3 blocks ==4601== suppressed: 0 bytes in 0 blocks ==4601== Reachable blocks (those to which a pointer was found) are not shown. ==4601== To see them, rerun with: --leak-check=full --show-reachable=yes ==4601== ==4601== For counts of detected and suppressed errors, rerun with: -v ==4601== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 55 from 38)
ysth.. 16
mysql_library_end();
在mysql_close帮助后添加吗?
更新:安装valgrind并尝试了它确实它.mysql_init()隐式地执行mysql_library_init(),但是mysql_close()没有类似地执行mysql_library_end(),文档暗示但是并没有直接说出来.
mysql_library_end();
在mysql_close帮助后添加吗?
更新:安装valgrind并尝试了它确实它.mysql_init()隐式地执行mysql_library_init(),但是mysql_close()没有类似地执行mysql_library_end(),文档暗示但是并没有直接说出来.