On Friday, 23 June 2023 at 23:37:29 UTC, Vinod K Chandran wrote:
Hi all,
Hi, I found the solution by myself. We can use Pipe struct for
this job.
Here is the code looks like. This is for future readers.
```d
void onBtnBurnClick(Control c, EventArgs e) { // A button click
event handler
if (!jobStarted) {
jobStarted = true;
btnBurn.text = "Stop the job";
string cmd = makeCommand();
ff = spawn(&runInAnotherThread, cmd); // ff is global var
} else {
ff.send(-1); // Send a signal to stop the job
btnBurn.text = "Start the job";
}
}
void runInAnotherThread(string cmd) {
Duration du = dur!"hnsecs"(-2); // Minus value for no waiting
auto psin = pipe();
auto psout = pipe();
auto pserr = pipe();
spawnShell(cmd, psin.readEnd, psout.writeEnd, pserr.writeEnd ,
null, Config.detached);
string line;
while ((line = pserr.readEnd.readln()) !is null){
receiveTimeout(du, (int dummy) {psin.writeEnd.writeln("q");
psin.writeEnd.flush(); }); // Here, entering "q" is app specific
command to stop.
writefln("pipe err: %s", line);
stdout.flush;
}
}
```
By this way, you can asynchronously process the output from the
child process.
