GT2/GT2-Android/node_modules/lock
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README.md

lock

lock asynchronous resources.

Simple Example

var Lock = require('lock')
var lock = Lock()

lock('key', function (release) { //called when resource is available.

  //do an async operation, and wrap the callback with release.
  someAsyncOperation(args,..., release(function (err) {
    //'key' is now unlocked!
  })
})

Multiple Locks at Once.

var Lock = require('lock')
var lock = Lock()

lock(['A', 'B', 'C'], function (release) { //called, when ALL
                                           //resources are available.

  //do an async operation, and wrap the callback with release(cb)
  someAsyncOperation(args,..., release(function (err) {
    //A, B & C are now unlocked!
  })
})

Lock with optional callback.

var Lock = require('lock');
var lock = Lock();

lock('cache', function(release) { //called when no one is writing to cache
	//we do not care if this fails since its a cache so no callback needed
	fs.writeFile(fileCache, ... , release())
})

used in level-update

License

MIT