aio.h aio_read() 和写入内存泄漏

我正在尝试使用 C++ 异步读取和写入磁盘（使用 Ubuntu 10.04 中的 posix aio 库），遵循此处概述的说明：一体机教程 http://www.ibm.com/developerworks/linux/library/l-async/。我可以异步读取和写入，但恐怕存在某种小型内存泄漏。我的 valgrind 输出显示有 288 个可能丢失的字节和 3,648 个仍然可达的字节。这些数字似乎与实际从文件读取的字节数无关。我找不到在哪里或如何消除这个泄漏 - 它甚至看起来像是 aio 库的问题。有没有人见过这个？完整的 valgrind 输出如下。提前致谢。

==22330== 
==22330== HEAP SUMMARY:
==22330==     in use at exit: 3,936 bytes in 3 blocks
==22330==   total heap usage: 25 allocs, 22 frees, 15,648 bytes allocated
==22330== 
==22330== 64 bytes in 1 blocks are still reachable in loss record 1 of 3
==22330==    at 0x4C274A8: malloc (vg_replace_malloc.c:236)
==22330==    by 0x4C27522: realloc (vg_replace_malloc.c:525)
==22330==    by 0x504CAF1: __aio_enqueue_request (aio_misc.c:127)
==22330==    by 0x504D25A: aio_read (aio_read.c:30)
==22330==    by 0x406EB7: baio::read(std::string, char*, long) (baio_unix.cxx:58)
==22330==    by 0x40613E: test_read_helper(char*) (test_read.cxx:16)
==22330==    by 0x4063E1: test_read() (test_read.cxx:54)
==22330==    by 0x40664C: test_read_main(int, char**) (test_read.cxx:74)
==22330==    by 0x40959D: testlib_run_test_unit(unsigned long, int, char**) (testlib_main.cxx:116)
==22330==    by 0x4097A9: testlib_main(int, char**) (testlib_main.cxx:155)
==22330==    by 0x4060B4: main (test_driver.cxx:12)
==22330== 
==22330== 288 bytes in 1 blocks are possibly lost in loss record 2 of 3
==22330==    at 0x4C267CC: calloc (vg_replace_malloc.c:467)
==22330==    by 0x4012395: _dl_allocate_tls (dl-tls.c:300)
==22330==    by 0x4E34728: pthread_create@@GLIBC_2.2.5 (allocatestack.c:561)
==22330==    by 0x504C9A8: __aio_enqueue_request (aio_misc.h:60)
==22330==    by 0x504D25A: aio_read (aio_read.c:30)
==22330==    by 0x406EB7: baio::read(std::string, char*, long) (baio_unix.cxx:58)
==22330==    by 0x40613E: test_read_helper(char*) (test_read.cxx:16)
==22330==    by 0x4063E1: test_read() (test_read.cxx:54)
==22330==    by 0x40664C: test_read_main(int, char**) (test_read.cxx:74)
==22330==    by 0x40959D: testlib_run_test_unit(unsigned long, int, char**) (testlib_main.cxx:116)
==22330==    by 0x4097A9: testlib_main(int, char**) (testlib_main.cxx:155)
==22330==    by 0x4060B4: main (test_driver.cxx:12)
==22330== 
==22330== 3,584 bytes in 1 blocks are still reachable in loss record 3 of 3
==22330==    at 0x4C267CC: calloc (vg_replace_malloc.c:467)
==22330==    by 0x504CA27: __aio_enqueue_request (aio_misc.c:139)
==22330==    by 0x504D25A: aio_read (aio_read.c:30)
==22330==    by 0x406EB7: baio::read(std::string, char*, long) (baio_unix.cxx:58)
==22330==    by 0x40613E: test_read_helper(char*) (test_read.cxx:16)
==22330==    by 0x4063E1: test_read() (test_read.cxx:54)
==22330==    by 0x40664C: test_read_main(int, char**) (test_read.cxx:74)
==22330==    by 0x40959D: testlib_run_test_unit(unsigned long, int, char**) (testlib_main.cxx:116)
==22330==    by 0x4097A9: testlib_main(int, char**) (testlib_main.cxx:155)
==22330==    by 0x4060B4: main (test_driver.cxx:12)
==22330== 
==22330== LEAK SUMMARY:
==22330==    definitely lost: 0 bytes in 0 blocks
==22330==    indirectly lost: 0 bytes in 0 blocks
==22330==      possibly lost: 288 bytes in 1 blocks
==22330==    still reachable: 3,648 bytes in 2 blocks
==22330==         suppressed: 0 bytes in 0 blocks
  

第二个块看起来像是与为处理异步读取而创建的库拥有的线程关联的线程本地存储。

==22330==    by 0x4012395: _dl_allocate_tls (dl-tls.c:300)
==22330==    by 0x4E34728: pthread_create@@GLIBC_2.2.5 (allocatestack.c:561)

第一个和第三个看起来像与未完成的异步读取相关的内部结构。

如果你能持续运行一段时间而只担心这个，我的本能会感激小怜悯。该库肯定必须有一定的自由度来分配持久内存以关联异步读取的结果。