I am having trouble getting the output of a subprocess. Usually I would use process.getInputStream(). However, in this case, I set the subprocess to inherit from the parent's IO. I need to do this because the output from the subprocess exceeds the buffer set by the kernel and thus will hang. I am using Linux btw.
//creating a named pipe
File fifo = fifoCreator.createFifoPipe("fifo");
String[] command = new String[] {"cat", fifo.getAbsolutePath()};
process = new ProcessBuilder(command).inheritIO().start(); //Inherit IO
FileWriter fw = new FileWriter(fifo.getAbsoluteFile());
BufferedWriter bw = new BufferedWriter(fw);
bw.write(boxString);
bw.close();
process.waitFor();
fifoCreator.removeFifoPipe(fifo.toString());
//Gets nothing here
stdInput = new BufferedReader(new InputStreamReader(process.getInputStream()));
String input = readAllLines(stdInput);
Ideally I want to keep everything in memory since I want good performance and less trash.
Is there a way to redirect the output of the subprocess into some data structure? If not, is there any way to get the output?
I am thinking of creating a separate thread that gets the output stream.
