Re: what does "err = Resource busy" mean?
Re: what does "err = Resource busy" mean?
- Subject: Re: what does "err = Resource busy" mean?
- From: Boyd Collier <email@hidden>
- Date: Sun, 26 May 2013 15:39:34 -0700
Argh! I found my error, and, as is usually the case, it was the result of being careless when hurrying. I did a copy-and-paste from code written for ints when writing an analogous method for doubles, so that there was a line that read _offDiagPtr = (double*)calloc( (size_t)numberOfElements, (size_t)sizeof(int)); when it should have read
_offDiagPtr = (double*)calloc( (size_t)numberOfElements, (size_t)sizeof(double));
I still don't understand the lengthy message that admonishes me to file a bug report, but I will comply.
Thanks, Seth, for taking a few minutes to reply to my original query.
Boyd
On May 25, 2013, at 10:25 AM, Boyd Collier wrote:
> I've been trying to track down a bug that crashes a document-based cocoa application which seems to be caused by referring to an object that no longer exists, but thus far haven't succeeded in determining what that object is. Yes, I've tried using the Zombies tool in Instruments but to no avail (perhaps because of my inexperience using Instruments). The crash occurs very inconsistently at the end of scanning a set of data in a completely ordinary text file; i.e. sometimes I can scan the same set of data 10 or 15 times before crashing, sometimes the crash occurs when the data are scanned for the first or second time, but (almost?) always it occurs somewhere after the data have been scanned (which is indicated by the line from the console shown below that reads "the state at end of scanning is 4"). And I'm really clueless about what the following lines from the console are telling me; any suggestions that you can offer would be greatly appreciated.
>
> I'm using Xcode 4.6 4H127 and OS X 10.7.5.
>
> Boyd
>
>
>
>
> 5/25/13 9:59:21.381 AM SuperSpagedi: looks like there's a distance matrix
> 5/25/13 9:59:21.381 AM SuperSpagedi: the label is pop1
> 5/25/13 9:59:21.382 AM SuperSpagedi: the label is pop2
> 5/25/13 9:59:21.382 AM SuperSpagedi: the label is pop3
> 5/25/13 9:59:21.382 AM SuperSpagedi: the label is pop4
> 5/25/13 9:59:21.382 AM SuperSpagedi: the label is pop5
> 5/25/13 9:59:21.382 AM SuperSpagedi: the label is pop6
> 5/25/13 9:59:21.383 AM SuperSpagedi: the state at end of scanning is 4
> 5/25/13 9:59:35.465 AM com.apple.debugserver-199: 2 +63.911824 sec [0322/0303]: error: ::ptrace (request = PT_THUPDATE, pid = 0x0323, tid = 0x2007, signal = 0) err = Resource busy (0x00000010)
> 5/25/13 9:59:35.465 AM com.apple.debugserver-199: 3 +0.000197 sec [0322/0303]: error: ::task_info ( target_task = 0x1b03, flavor = TASK_BASIC_INFO, task_info_out => 0x7fff6a6d5fb0, task_info_outCnt => 10 ) err = (os/kern) invalid argument (0x00000004)
> 5/25/13 9:59:35.468 AM Xcode: [MT] DVTAssertions: Warning in /SourceCache/IDEKit/IDEKit-2109/Framework/Classes/Editor/IDEEditorContext.m:617
> Details: Lost history for x-xcode-disassembly://stack_frame?processID=803&threadID=1&frameID=0
> Object: <IDEEditorContext: 0x402d72a40>
> Method: -_greatestDocumentAncestorWasForgotten
> Thread: <NSThread: 0x40010a220>{name = (null), num = 1}
> Please file a bug at http://bugreport.apple.com with this warning message and any useful information you can provide.
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