Thanks Ken and Kai for your very very quick responsesThis is my first post
in the list, I'm sorry for not clarifying my problem.
Actually, the program stopped at the mentioned line.
In console, it said something like:
*objc[2144]: FREED(id): message release sent to freed object=0x17d1d0*
This GDB was configured as "i386-apple-darwin"
(Error from the debugger) /users/...path_to_my_exe_file: No such file or
directory.
But I checked the exe file and it's absolutely there(in the bundle).
I tried an autorelease pool inside the loop, disposing of datahandle.etc,
but still got the same problem.
Now, when I confirmed the *dataHandle, it returned NULL
but I don't know why?
--Bach
On Wed, Jun 25, 2008 at 3:36 PM, Ken Thomases <[EMAIL PROTECTED]> wrote:
> On Jun 25, 2008, at 1:19 AM, Tran Kim Bach wrote:
>
> Hi folks,I'm a newbie to Cocoa.
>> Recently, I'm working on a project relating to Resource Management.
>> In my project, there's a part that I'm reading through the resources in a
>> resource file.
>> I'm using:
>> int count = CountResources( typeName );
>> to get all resource that has the type "typeName", then loop through this
>> resource list to take resource data out.
>>
>> for (n = 1; n <= count; n++)
>> {
>> Handle dataHandle = Get1IndResource( type1, n);
>> ....
>> NSData *data = [NSData dataWithBytes: *dataHandle length:
>> GetResourceSizeOnDisk(dataHandle)]; // I GOT AN ERROR HERE
>>
>
> What do you mean "GOT AN ERROR"? What error? How did it manifest?
>
>
>
>> //using data
>> struct A_STRUCT aStruct;
>>
>> memcpy(& aStruct,[data bytes], [data length]);
>> }
>> After several times looping through the list, I got an error in the line
>> above.
>> But if I use data directly, like the following code, there is no error
>> occurred.
>> memcpy(&pgControlRes,*dataHandle, GetResourceSizeOnDisk(dataHandle));
>> Any suggestions for my problem.
>> I highly appreciate all your helps.
>>
>
> You don't show if you're:
>
> 1) Checking if dataHandle is NULL
> 2) Checking if *dataHandle is NULL
> 3) If (1) or (2), checking ResError()
> 4) Disposing of dataHandle with ReleaseResource()
>
> Also, in the pseudo-code you provide, the NSData objects will accumulate in
> the autorelease pool until some point after your "for" loop. You can try
> using an autorelease pool inside the loop so that the NSData objects are
> released after each iteration. You may just be exhausting memory. For the
> case where you're not using NSData, the memory exhaustion might not happen
> since you're not storing the data twice in memory (once in the handle, once
> in the NSData), but would if there were twice as many resources.
>
> Cheers,
> Ken
>
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