Databases
StackOverflow2013
Postsdbo
POUIWebView leaking memory when loading .RTF files?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POUIWebView leaking memory when loading .RTF files?
    primarykey
    data
    text
    <p>Trying to load a .rtf file (2.4 MB) via webView like this: </p> <pre><code> NSURL *docURL = [NSURL fileURLWithPath:docPath]; NSData *data = [NSData dataWithContentsOfURL:docURL]; NSString *mimeType = //receiving proper mime type here [webView loadData:data MIMEType:mimeType textEncodingName:@"utf-8" baseURL:docURL]; </code></pre> <p>Loading such files leads to memory growth until app crashes. According to the Instruments memory growth continues even after complete deallocation of webView containing controller and webView itself. Being in other place of the application, using other app features, memory grows as if I'm still continuing browsing that .RTF file.</p> <p>When closing/dismissing the controller I also do all things to deallocate WebView. That is: mainWebview.delegate = nil; [mainWebview stopLoading]; , [mainWebview removeFromSuperview]; , [mainWebview release]; . (Even tried to do the following: [mainWebview loadHTMLString:@"" baseURL:nil]; )</p> <p>What I see in instruments: <img src="https://i.stack.imgur.com/32Otr.png" alt="enter image description here"></p> <p>Does anybody have any ideas? Thanks.</p> <p><strong>EDIT:</strong> I tested some large .RTF files (700 Kb - 2.4 Mb) on Safari, Chrome, Mercury browsers. Same thing happens everywhere, both simulator and device. I guess it's some bug in WebKit. </p> <p>General situation: browsers use too much memory to process this kind of files. In 90% of cases just abnormally exit with "Crash" or "Low Memory" signal. If device handles peak memory usage when loading the file then memory drains back to normal, if not - it crashes. </p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USkrafter
    1. USkrafter
    plurals
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POUIWebView leaking memory when loading .RTF files?
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POUIWebView leaking memory when loading .RTF files?
      1. USPhineas Lue
      1. VTFavorite
    1. COThat's not _technically_ a leak - it's just lots of memory being used. Does the static analyser give you any hints / clues? And is this on a real device or on the simulator? (The simulator sometimes gives odd results because it uses a different memory model. It's a simulator, not an emulator!)
      singulars
      1. POUIWebView leaking memory when loading .RTF files?
      1. USdeanWombourne
    2. COYep, almost the same thing happens on the simulator. (but app doesn't crashes, reaching some peak at 250-300 MB of live bytes, than releasing all, returning to normal.) And static analyzer doesn't give me anything on this issue.
      singulars
      1. POUIWebView leaking memory when loading .RTF files?
      1. USkrafter
    3. COI mean I was using real device all the time.
      singulars
      1. POUIWebView leaking memory when loading .RTF files?
      1. USkrafter
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload