search

jarofghosts / jung

Lightweight, flexible file watching
MIT License
38 stars 3 forks source link

jung command fails on large directories on Mac OS X #3

Open fardog opened 10 years ago

fardog commented 10 years ago

This was tested on Mac OS X "Mavericks" on an rMBP (15-inch Early 2013).

Seemingly when working with large directories, jung will fail. I'm assuming it's large directories, because it will work fine with a directory with one or two files in it, but for my actual use-case, it fails. To replicate, perform the following:

npm install -g sails
sails new testproject --linker
cd testproject
npm install
jung -- cat package.json

This will fail with the following:

fs.js:1051
    throw errnoException(process._errno, 'watch');
          ^
Error: watch EMFILE
    at errnoException (fs.js:1019:11)
    at FSWatcher.start (fs.js:1051:11)
    at Object.fs.watch (fs.js:1076:11)
    at initWatcher (/usr/local/lib/node_modules/jung/node_modules/watch-fs/lib/watcher.js:99:32)
    at /usr/local/lib/node_modules/jung/node_modules/watch-fs/lib/watcher.js:92:9
    at Array.forEach (native)
    at initWatchers (/usr/local/lib/node_modules/jung/node_modules/watch-fs/lib/watcher.js:91:22)
    at /usr/local/lib/node_modules/jung/node_modules/watch-fs/lib/watcher.js:241:13
    at /usr/local/lib/node_modules/jung/node_modules/watch-fs/lib/watcher.js:72:9
    at /usr/local/lib/node_modules/jung/node_modules/watch-fs/node_modules/async/lib/async.js:116:25
jarofghosts commented 10 years ago

Unfortunately, it is due to a system-level limit on the number of file event watchers that can be registered, so the solution is not immediately obvious. Until I can fix it, if you don't need to watch a directory it's best to exclude it with the --notdirs, -D flag to avoid these kind of issues.

For example, jung -D node_modules -- cat package.json

fardog commented 10 years ago

ok, that works fine. i'll leave it to you if you want to close this issue, but it's resolved for me.