diff options
Diffstat (limited to 'deps/npm/node_modules/graceful-fs/graceful-fs.js')
| -rw-r--r-- | deps/npm/node_modules/graceful-fs/graceful-fs.js | 154 |
1 files changed, 105 insertions, 49 deletions
diff --git a/deps/npm/node_modules/graceful-fs/graceful-fs.js b/deps/npm/node_modules/graceful-fs/graceful-fs.js index e15042da910..947cd94bb41 100644 --- a/deps/npm/node_modules/graceful-fs/graceful-fs.js +++ b/deps/npm/node_modules/graceful-fs/graceful-fs.js @@ -54,7 +54,7 @@ if (!fs[gracefulQueue]) { return fs$close.call(fs, fd, function (err) { // This function uses the graceful-fs shared queue if (!err) { - retry() + resetQueue() } if (typeof cb === 'function') @@ -72,7 +72,7 @@ if (!fs[gracefulQueue]) { function closeSync (fd) { // This function uses the graceful-fs shared queue fs$closeSync.apply(fs, arguments) - retry() + resetQueue() } Object.defineProperty(closeSync, previousSymbol, { @@ -114,14 +114,13 @@ function patch (fs) { return go$readFile(path, options, cb) - function go$readFile (path, options, cb) { + function go$readFile (path, options, cb, startTime) { return fs$readFile(path, options, function (err) { if (err && (err.code === 'EMFILE' || err.code === 'ENFILE')) - enqueue([go$readFile, [path, options, cb]]) + enqueue([go$readFile, [path, options, cb], err, startTime || Date.now(), Date.now()]) else { if (typeof cb === 'function') cb.apply(this, arguments) - retry() } }) } @@ -135,14 +134,13 @@ function patch (fs) { return go$writeFile(path, data, options, cb) - function go$writeFile (path, data, options, cb) { + function go$writeFile (path, data, options, cb, startTime) { return fs$writeFile(path, data, options, function (err) { if (err && (err.code === 'EMFILE' || err.code === 'ENFILE')) - enqueue([go$writeFile, [path, data, options, cb]]) + enqueue([go$writeFile, [path, data, options, cb], err, startTime || Date.now(), Date.now()]) else { if (typeof cb === 'function') cb.apply(this, arguments) - retry() } }) } @@ -157,14 +155,13 @@ function patch (fs) { return go$appendFile(path, data, options, cb) - function go$appendFile (path, data, options, cb) { + function go$appendFile (path, data, options, cb, startTime) { return fs$appendFile(path, data, options, function (err) { if (err && (err.code === 'EMFILE' || err.code === 'ENFILE')) - enqueue([go$appendFile, [path, data, options, cb]]) + enqueue([go$appendFile, [path, data, options, cb], err, startTime || Date.now(), Date.now()]) else { if (typeof cb === 'function') cb.apply(this, arguments) - retry() } }) } @@ -178,49 +175,43 @@ function patch (fs) { cb = flags flags = 0 } - return fs$copyFile(src, dest, flags, function (err) { - if (err && (err.code === 'EMFILE' || err.code === 'ENFILE')) - enqueue([fs$copyFile, [src, dest, flags, cb]]) - else { - if (typeof cb === 'function') - cb.apply(this, arguments) - retry() - } - }) + return go$copyFile(src, dest, flags, cb) + + function go$copyFile (src, dest, flags, cb, startTime) { + return fs$copyFile(src, dest, flags, function (err) { + if (err && (err.code === 'EMFILE' || err.code === 'ENFILE')) + enqueue([go$copyFile, [src, dest, flags, cb], err, startTime || Date.now(), Date.now()]) + else { + if (typeof cb === 'function') + cb.apply(this, arguments) + } + }) + } } var fs$readdir = fs.readdir fs.readdir = readdir function readdir (path, options, cb) { - var args = [path] - if (typeof options !== 'function') { - args.push(options) - } else { - cb = options - } - args.push(go$readdir$cb) - - return go$readdir(args) + if (typeof options === 'function') + cb = options, options = null - function go$readdir$cb (err, files) { - if (files && files.sort) - files.sort() + return go$readdir(path, options, cb) - if (err && (err.code === 'EMFILE' || err.code === 'ENFILE')) - enqueue([go$readdir, [args]]) + function go$readdir (path, options, cb, startTime) { + return fs$readdir(path, options, function (err, files) { + if (err && (err.code === 'EMFILE' || err.code === 'ENFILE')) + enqueue([go$readdir, [path, options, cb], err, startTime || Date.now(), Date.now()]) + else { + if (files && files.sort) + files.sort() - else { - if (typeof cb === 'function') - cb.apply(this, arguments) - retry() - } + if (typeof cb === 'function') + cb.call(this, err, files) + } + }) } } - function go$readdir (args) { - return fs$readdir.apply(fs, args) - } - if (process.version.substr(0, 4) === 'v0.8') { var legStreams = legacy(fs) ReadStream = legStreams.ReadStream @@ -343,14 +334,13 @@ function patch (fs) { return go$open(path, flags, mode, cb) - function go$open (path, flags, mode, cb) { + function go$open (path, flags, mode, cb, startTime) { return fs$open(path, flags, mode, function (err, fd) { if (err && (err.code === 'EMFILE' || err.code === 'ENFILE')) - enqueue([go$open, [path, flags, mode, cb]]) + enqueue([go$open, [path, flags, mode, cb], err, startTime || Date.now(), Date.now()]) else { if (typeof cb === 'function') cb.apply(this, arguments) - retry() } }) } @@ -362,12 +352,78 @@ function patch (fs) { function enqueue (elem) { debug('ENQUEUE', elem[0].name, elem[1]) fs[gracefulQueue].push(elem) + retry() +} + +// keep track of the timeout between retry() calls +var retryTimer + +// reset the startTime and lastTime to now +// this resets the start of the 60 second overall timeout as well as the +// delay between attempts so that we'll retry these jobs sooner +function resetQueue () { + var now = Date.now() + for (var i = 0; i < fs[gracefulQueue].length; ++i) { + // entries that are only a length of 2 are from an older version, don't + // bother modifying those since they'll be retried anyway. + if (fs[gracefulQueue][i].length > 2) { + fs[gracefulQueue][i][3] = now // startTime + fs[gracefulQueue][i][4] = now // lastTime + } + } + // call retry to make sure we're actively processing the queue + retry() } function retry () { + // clear the timer and remove it to help prevent unintended concurrency + clearTimeout(retryTimer) + retryTimer = undefined + + if (fs[gracefulQueue].length === 0) + return + var elem = fs[gracefulQueue].shift() - if (elem) { - debug('RETRY', elem[0].name, elem[1]) - elem[0].apply(null, elem[1]) + var fn = elem[0] + var args = elem[1] + // these items may be unset if they were added by an older graceful-fs + var err = elem[2] + var startTime = elem[3] + var lastTime = elem[4] + + // if we don't have a startTime we have no way of knowing if we've waited + // long enough, so go ahead and retry this item now + if (startTime === undefined) { + debug('RETRY', fn.name, args) + fn.apply(null, args) + } else if (Date.now() - startTime >= 60000) { + // it's been more than 60 seconds total, bail now + debug('TIMEOUT', fn.name, args) + var cb = args.pop() + if (typeof cb === 'function') + cb.call(null, err) + } else { + // the amount of time between the last attempt and right now + var sinceAttempt = Date.now() - lastTime + // the amount of time between when we first tried, and when we last tried + // rounded up to at least 1 + var sinceStart = Math.max(lastTime - startTime, 1) + // backoff. wait longer than the total time we've been retrying, but only + // up to a maximum of 100ms + var desiredDelay = Math.min(sinceStart * 1.2, 100) + // it's been long enough since the last retry, do it again + if (sinceAttempt >= desiredDelay) { + debug('RETRY', fn.name, args) + fn.apply(null, args.concat([startTime])) + } else { + // if we can't do this job yet, push it to the end of the queue + // and let the next iteration check again + fs[gracefulQueue].push(elem) + } + } + + // schedule our next run if one isn't already scheduled + if (retryTimer === undefined) { + retryTimer = setTimeout(retry, 0) } } |