英文:
Programs have to access to global variables in package
问题
我有一个与打开的文件（*os.File）和与之关联的日志记录器相关的全局变量的包。
另一方面，我将构建几个命令来使用该包，我不想每次运行命令时都打开文件并将其设置为日志记录器。
因此，第一个要运行的程序将设置全局变量，这里是我的问题：
-
后续使用该包的程序能够无问题地访问这些全局变量吗？可以创建一个带有标志的命令，在被其他程序使用之前初始化这些值，并在完成后取消设置包中的全局变量。
-
如果这不可能，避免此类IO限制的最佳选项是什么？使用Unix套接字中的服务器。
英文:
I've a package with global variables related to a file open
(*os.File), and its logger associated.
By another side, I'll build several commands that are going to use
that package and I want not open the file to set it as logger every
time I run a command.
So, the first program to run will set the global variables, and here
is my question:
-
Do the next programs to use the package can access to those global
variables without problem? It could be created a command with a flag
to initialize those values before of be used by another programs, and
another flag to finish it (unset the global variables in the package). -
If that is not possible, which is the best option to avoid such IO-bound? To use a server in Unix sockets?
答案1
得分: 0
假设你所说的“program”实际上是指“进程”，那么答案是否定的。
如果你想在进程之间共享一个（可能是定制化的）日志功能，我会考虑使用类似守护进程的方式（据我所知，Go目前还不支持编写真正的守护进程），以及任何你认为方便的进程间通信方式。
英文:
Assuming by 'program' you actually mean 'process', the answer is no.
If you want to share a (customized perhaps) logging functionality between processes then I would consider a daemon-like (Go doesn't yet AFAIK support writing true daemons) process/server and any kind of IPC you see handy.
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