// Import
var safefs = require('safefs');

// Indicate we're wanting to open a file and reserve our space in the queue
// If there is space in the pool, our callback will run right away
// If there isn't space, our callback will fire as soon as there is
safefs.openFile(function(){
    // We just got some available space, lets do our stuff with the file
    require('fs').writeFileSync('some-file', 'data')
    // Once we're done, indicate it, so that other tasks can swim in the pool too
    safefs.closeFile();
});

// If we're working with an asynchronous function, it'll look like this
safefs.openFile(function(){
    require('fs').writeFile('some-file', 'data', function(err){
        safefs.closeFile();
    });
});
// as we only want to close file once we are completely done with it

// However, that's pretty annoying have to wrap all our calls in openFile and closeFile
// so it's a good thing that safefs provides wrappers for all the asynchronous fs methods for us
// allowing us to just do
safefs.writeFile('some-file', 'data', function(err){
    // all done
});
// which will open and close the spot in the pool for us automatically, yay!