Comment by uecker
17 hours ago
If you use pipe() you get two ends in the same process, then you fork and child and parent can communicate. This is how a unix shell setups up pipes and it is rather elegant.
17 hours ago
If you use pipe() you get two ends in the same process, then you fork and child and parent can communicate. This is how a unix shell setups up pipes and it is rather elegant.
Doing the same thing on Windows, I create the pipe and get two ends in the same process. Then I'd call CreateProcess and indicate I want the pipe's handle (fd) inherited to the child, and I'd use a prearranged way to tell the child what the fd value is it should use.
Possibly the most common way to tell the child the value is by setting it as a CLI arg in CreateProcess.
Yes, and CreateProcess needs special facilities to make this possible while in the UNIX model you don't.
Which special facilities are you referring to? If it's the ability to selectively inherit handles (fds) to a new process, Linux's lack of this "special facility" is nothing to be proud of.
How do you selectively pass on fds without having a global impact on your process?