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cordova-file concurrent writes reproducer
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| function testingDirEntryFor(directoryName) { | |
| return new Promise((resolve, reject) => { | |
| window.resolveLocalFileSystemURL(cordova.file.dataDirectory, (rootDataDir) => { | |
| rootDataDir.getDirectory(directoryName, { create: true }, (dirEntry) => { | |
| resolve(dirEntry); | |
| }, (error) => reject(error)); | |
| }, (error) => reject(error)); | |
| }); | |
| } | |
| function fileEntry(directoryName, fileName, getFileFlags) { | |
| return new Promise((resolve, reject) => { | |
| testingDirEntryFor(directoryName).then(dirEntry => { | |
| dirEntry.getFile(fileName, getFileFlags, (fileEntry) => { | |
| resolve(fileEntry); | |
| }, (error) => reject(`Error while retrieving file entry for ${dirEntry.fullPath}/${fileName}: ${error.toString()}`)); | |
| }, reject); | |
| }); | |
| } | |
| function creationFileEntry(directoryName, fileName) { | |
| return fileEntry(directoryName, fileName, {create: true, exclusive: false }); | |
| } | |
| function readFileEntry(directoryName, fileName) { | |
| return fileEntry(directoryName, fileName, {create: false }); | |
| } | |
| function writeFile(fileWriter, content) { | |
| return new Promise((resolve, reject) => { | |
| fileWriter.onwriteend = () => { | |
| resolve(); | |
| } | |
| fileWriter.onerror = (error) => { | |
| console.error(`Error while writing : ${error.toString()}`) | |
| reject(error); | |
| } | |
| console.info(`fileWriter.write() called with position=${fileWriter.position},length=${fileWriter.length}`); | |
| fileWriter.write(content); | |
| }); | |
| } | |
| function readFileContent(directoryName, fileName) { | |
| return new Promise((resolve, reject) => { | |
| readFileEntry(directoryName, fileName).then((fileEntry) => { | |
| if(!fileEntry) { | |
| resolve(null); | |
| } else { | |
| fileEntry.file(file => { | |
| const reader = new FileReader(); | |
| reader.onloadend = function() { | |
| resolve(this.result); | |
| }; | |
| reader.readAsText(file, "utf-8"); | |
| }, (error) => { | |
| if([FileError.NOT_FOUND_ERR, FileError.NOT_READABLE_ERR].includes(error.code)) { | |
| resolve(null); | |
| } else { | |
| console.error(`Error while reading file : ${fileName} in ${directoryName}/${fileName}`) | |
| reject(error); | |
| } | |
| }) | |
| } | |
| }, (error) => { | |
| console.error(`Error while reading file : ${fileName} in ${directoryName}/${fileName}`) | |
| reject(error); | |
| }) | |
| }); | |
| } | |
| function testWriting(numberOfTimes) { | |
| var fileEntryPromises = new Array(numberOfTimes*2).fill(0).map((_) => creationFileEntry("tests", "testing")); | |
| var fileWriterPromises = fileEntryPromises.map(feProm => feProm.then(fileEntry => | |
| new Promise((resolve, reject) => fileEntry.createWriter(resolve, (error) => reject(`Error while creating writer for ${fileEntry.fullPath}: ${error.toString()}`))) | |
| )); | |
| new Array(numberOfTimes).fill(0).reduce((previousPromise, _, idx) => { | |
| return previousPromise.then(({ detected, content }) => { | |
| if(detected) { | |
| return { detected, content }; | |
| } | |
| var result = { found: false, prom1Resolved: false, prom2Resolved: false }; | |
| var prom1 = fileWriterPromises[idx*2].then(fw => writeFile(fw, "a")); | |
| var prom2 = fileWriterPromises[idx*2+1].then(fw => writeFile(fw, "b")); | |
| return Promise.all([prom1, prom2]).then(() => { | |
| return readFileContent("tests", "testing").then(content => { | |
| var detected = (content.length !== 1); | |
| console.info(`test ${idx} => ${detected?"detected !":"not detected !"}`); | |
| return { detected, content }; | |
| }); | |
| }); | |
| }); | |
| }, Promise.resolve({ detected: false, content: undefined })).then(({ detected, content }) => { | |
| console.info(detected?"Thread safety write detected !":"No thread safety write issue found !", content); | |
| }); | |
| } |
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| testWriting(50) | |
| undefined | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 0 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 1 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 2 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 3 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 4 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 5 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 6 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 7 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 8 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 9 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 10 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 11 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 12 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 13 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 14 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 15 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 16 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 17 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 18 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 19 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 20 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 21 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 22 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 23 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 24 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 25 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 26 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 27 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 28 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 29 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 30 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 31 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 32 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 33 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 34 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 35 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 36 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 37 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 38 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 39 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 40 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 41 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 42 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 43 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 44 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 45 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 46 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 47 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 48 => not detected ! | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:39 fileWriter.write() called with position=0,length=1 | |
| filewriter-threadsafety.js:92 test 49 => not detected ! | |
| filewriter-threadsafety.js:98 No thread safety write issue found ! b |
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| > testWriting(50) | |
| < undefined | |
| [Info] fileWriter.write() called with position=0,length=2 (t.js, line 13) | |
| [Info] fileWriter.write() called with position=0,length=2 (t.js, line 13) | |
| [Info] test 0 => not detected ! (t.js, line 13) | |
| [Info] fileWriter.write() called with position=0,length=2 (t.js, line 13) | |
| [Info] fileWriter.write() called with position=0,length=2 (t.js, line 13) | |
| [Info] test 1 => detected ! (t.js, line 13) | |
| [Info] Thread safety write detected ! – "ab" (t.js, line 13) |
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