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https://issues.apache.org/jira/browse/CB-7109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14121764#comment-14121764
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Michael Stanford commented on CB-7109:
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I get a ton of these in Xcode for the file plugin (Cordova 3.5-0.2.7):
2014-09-04 13:50:13.534 myapp[1867:60b] THREAD WARNING: ['Geolocation'] took
'11.253174' ms. Plugin should use a background thread.
2014-09-04 13:50:19.098 myapp[1867:60b] Resetting plugins due to page load.
2014-09-04 13:50:19.578 myapp[1867:60b] Finished load of:
file:///var/mobile/Applications/9DE39AC0-A201-49FD-ACBC-AC019684D656/myapp.app/www/talk/index.html
2014-09-04 13:50:21.402 myapp[1867:60b] THREAD WARNING: ['File'] took
'24.826904' ms. Plugin should use a background thread.
2014-09-04 13:50:21.875 myapp[1867:60b] THREAD WARNING: ['File'] took
'12.821777' ms. Plugin should use a background thread.
2014-09-04 13:50:22.075 myapp[1867:60b] THREAD WARNING: ['File'] took
'22.020020' ms. Plugin should use a background thread.
2014-09-04 13:50:22.501 myapp[1867:60b] THREAD WARNING: ['File'] took
'72.337891' ms. Plugin should use a background thread.
2014-09-04 13:50:22.527 myapp[1867:60b] THREAD WARNING: ['File'] took
'15.635010' ms. Plugin should use a background thread.
2014-09-04 13:50:22.544 myapp[1867:60b] THREAD WARNING: ['File'] took
'10.383301' ms. Plugin should use a background thread.
2014-09-04 13:50:22.792 myapp[1867:60b] THREAD WARNING: ['File'] took
'123.376953' ms. Plugin should use a background thread.
2014-09-04 13:50:25.605 myapp[1867:60b] THREAD WARNING: ['File'] took
'13.333984' ms. Plugin should use a background thread.
2014-09-04 13:51:09.578 myapp[1867:60b] Resetting plugins due to page load.
> exec() call to plugin blocked the main thread
> ---------------------------------------------
>
> Key: CB-7109
> URL: https://issues.apache.org/jira/browse/CB-7109
> Project: Apache Cordova
> Issue Type: Bug
> Components: Android, Plugin File
> Affects Versions: 3.5.0
> Reporter: Rajesh Kumar
> Priority: Minor
>
> In the file plugin of v3.5.0, I constantly see a warning in logcat in eclipse
> when I try to write to a file. The warning is:
> THREAD WARNING: exec() call to File.write blocked the main thread for 117ms.
> Plugin should use CordovaInterface.getThreadPool().
> Similar issue is when I try to exit app. I guess this issue is present for
> all the plugins. I checked the part of File plugin code:
> final String fname=args.getString(0);
> final String data=args.getString(1);
> final int offset=args.getInt(2);
> final Boolean isBinary=args.getBoolean(3);
> threadhelper( new FileOp( ){
> public void run() throws FileNotFoundException, IOException,
> NoModificationAllowedException {
> long fileSize = write(fname, data, offset, isBinary);
> callbackContext.sendPluginResult(new
> PluginResult(PluginResult.Status.OK, fileSize));
> }
> }, callbackContext);
> And, threadhelper uses:
> cordova.getThreadPool().execute(new Runnable() {
> public void run() {}
> });
> This means, the plugin is using a thread to do some async task, but logcat
> throws the block warning. We need to fix this.
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