It really depends on what you’re trying to do, exactly, as it’s: OS dependent Not quite clear what you’re trying to do. Nevertheless, I’ll try to provide some information for you to decide. On UNIX, fork() creates a clone of your process from the place where you called fork. Meaning, if I have the following … Read more
True solution for OSX Write the following function to your ~/.bashrc or ~/.zshrc. capture() { sudo dtrace -p “$1” -qn ‘ syscall::write*:entry /pid == $target && arg0 == 1/ { printf(“%s”, copyinstr(arg1, arg2)); } ‘ } Usage: example@localhost:~$ perl -e ‘STDOUT->autoflush; while (1) { print “Hello\n”; sleep 1; }’ >/dev/null & [1] 97755 example@localhost:~$ capture … Read more
“and waiting must be async” – I’m not trying to be funny, but isn’t that a contradiction in terms? However, since you are starting a Process, the Exited event may help: ProcessStartInfo startInfo = null; Process process = Process.Start(startInfo); process.EnableRaisingEvents = true; process.Exited += delegate {/* clean up*/}; If you want to actually wait (timeout … Read more
kill -0 does not kill the process. It just checks if you could send a signal to it. Simply kill pid, and if that doesn’t work, try kill -9 pid.
Assuming that winrar.exe is in the PATH, then Runtime.exec is capable of finding it, if it is not, you will need to supply the fully qualified path to it, for example, assuming winrar.exe is installed in C:/Program Files/WinRAR you would need to use something like… p=r.exec(“C:/Program Files/WinRAR/winrar x h:\\myjar.jar *.* h:\\new”); Personally, I would recommend … Read more
When I reproduce your situation I see different PIDs between docker top <container> and docker exec -it <container> ps -aux. When you do docker exec the command is executed inside the container => should use container’s pid. Otherwise you could do the kill without docker straight from the host, in your case: sudo kill -9 … Read more
First, accept() the incoming connection. The accepting process now has a handle to the listening socket, and the newly accepted socket. Fork and: In the child: Close the listening socket. Do stuff with the accepted socket. In the parent: Close the accepted socket. Resume the accept loop. The various socket resources will be reclaimed when … Read more
Effectively what you are differing is process based vs thread based. Threads share memory (e.g. SharedArrayBuffer) whereas processes don’t. Essentially they are the same thing categorically. cluster One process is launched on each CPU and can communicate via IPC. Each process has it’s own memory with it’s own Node (v8) instance. Creating tons of them … Read more
Swapping refers to copying the entire process address space, or at any rate, the non-shareable-text data segment, out to the swap device, or back, in one go (typically disk). Whereas paging refers to copying in/out one or more pages of the address space. In particular, this is at a much finer grain. For example, there … Read more
http://www.rgagnon.com/javadetails/java-0014.html import java.io.BufferedReader; import java.io.InputStreamReader; import java.nio.file.Paths; public class CmdExec { public static void main(String args[]) { try { // enter code here Process p = Runtime.getRuntime().exec( Paths.get(System.getenv(“windir”), “system32”, “tree.com /A”).toString() ); // enter code here try(BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream()))) { String line; while ((line = input.readLine()) != null) { System.out.println(line); } } … Read more