import os
from multiprocessing import Process
b = {
'x':{
'd':[]
},
'y':{
'd':[]
},
}
def fmt():
global b
for k in b:
if not b[k]['d']:
b[k]['d'].append("
在我的例子中,我试图编写缓冲区/dev/fb1。一旦我去守护程序,我就得不到有效的文件描述符。我尝试使用一个常规文件(具有正确的权限)-相同的结果。当我注释掉daemonize()时,一切都很好。
int fbfd;
void initFB()
{
fbfd = open("/dev/fb1", O_RDWR);
if (!fbfd)
{
exit(EXIT_FAILURE);
}
...
}
int daemonize()
{
pid_t pid,sid;
int lockFile;
cha
在中,Jeffrey Richter给出了以下委托链接的示例(pg。406):
internal delegate void Feedback(Int 32 value);
Feedback fb1 = new Feedback(method1); // in the book, these methods
Feedback fb2 = new Feedback(method2); // have different names
Feedback fb3 = new Feedback(method3);
Feedback fbChain = null;
fbChain = (Feed