Flutter：打开文件过多异常MacOS

如何解决Flutter：打开文件过多异常MacOS

今天我在我的应用程序中看到一个奇怪的错误，就像这样

filesystemexception: filesystemexception: Getting current working directory Failed,path = '' (OS Error: Too many open files in system,errno = 23)

我的应用有大量资源，可能是这个问题的原因？

这感觉像是两个不同的问题。一个是我们持有 package:test code on Mac 并试图一次驱动太多测试

扑医生

[✓] Flutter (Channel stable,1.22.5,on Mac OS X 10.15.7 19H2 darwin-x64,locale en-GB)
    • Flutter version 1.22.5 at /Users/mac/Development/Flutter
    • Framework revision 7891006299 (4 weeks ago),2020-12-10 11:54:40 -0800
    • Engine revision ae90085a84
    • Dart version 2.10.4

 
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
    • Android SDK at /Users/mac/Library/Android/sdk
    • Platform android-30,build-tools 30.0.3
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 12.0)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 12.0,Build version 12A7209
    • CocoaPods version 1.10.0

[!] Android Studio (version 4.1)
    • Android Studio at /Applications/Android Studio.app/Contents
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495)

[!] Connected device
    ! No devices available

! Doctor found issues in 2 categories.

如何更改 macOS 上的打开文件限制？

解决方法

Mac OS 一次可以打开多少文件的默认限制相当低。如果遇到此限制，请使用 ulimit 命令增加可用文件处理程序的数量：

ulimit -S -n 2048

如果您使用 Travis 或 Cirrus 进行测试，请分别将同一行添加到 flutter/.travis.yml 或 flutter/.cirrus.yml 以增加它们可以打开的可用文件处理程序的数量。