我运行此代码并从 Valgrind 收到此消息，我是 c++ 和 Linux 的新手，但我知道我必须修复它。请你能告诉我有什么问题吗？我正在使用 Ubuntu。
消息是这样的：
==29304== Thread 1:
==29304== 72 bytes in 18 blocks are definitely lost in loss record 55 of 89
==29304== at 0x402641D: operator new(unsigned int) (vg_replace_malloc.c:255)
==29304== by 0x4032BBC: GmpPipePlayer::GmpPipePlayer(IOBase*, Referee*, unsigned char, int, DataBoard const*, int, char const*, int) (unixgmppipe.cpp:126)
==29304== by 0x40329F9: GmpPipePlayer::CreateFunc(IOBase*, Referee*, unsigned char, int, DataBoard const*, void*) (unixgmppipe.cpp:55)
代码是：int down[2], up[2];
pipe(down);
pipe(up);
_pid = fork();
if (_pid < 0)
exit(1);
if (_pid == 0)
{
close(down[1]);
close(up[0]);
dup2(down[0], 0);
dup2(up[1], 1);
execl("/bin/sh", "sh", "-c", cmd_line, NULL);
_exit(1);
}
close(down[0]);
close(up[1]);
_down = down[1];
_up = up[0];
_reader_thd = new Thread(reader_wrapper, this); //here is the error happening.
函数 readre_wrapper 是：
THREAD_Return GmpPipePlayer::reader_wrapper(void *p)
{
GmpPipePlayer *t = (GmpPipePlayer *)p;
t->reader_fn();
return NULL;
}
这个新线程被多次调用。在我再次调用它之前，我会执行以下操作：
if (_pid > 0)
{
kill(_pid, SIGTERM);
_pid = 0;
}
if (_up)
{
close(_up);
_up = 0;
}
if (_down)
{
close(_down);
_down = 0;
}
有什么想法有什么问题吗？