This is just test code to see if I can actually get the vm_stat data. It is run 
only under the debugger 1 or 2 steps at a time. When I have the concept down I 
will modify it.

No, I actually mean != 0, see below - it is the description of how reading 
available data from a NSFileHandleForReading...

Return Value
         The data currently available through the receiver.
         
         Discussion
         If the receiver is a file, returns the data obtained by reading the 
file from the file pointer to the end of the file. If the receiver is a 
communications channel, reads up to a buffer of data and returns it; if no data 
is available, the method blocks. Returns an empty data object if the end of 
file is reached. Raises NSFileHandleOperationException if attempts to determine 
file-handle type fail or if attempts to read from the file or channel fail.

On Aug 13, 2012, at 6:09 PM, Jens Alfke wrote:

> 
> On Aug 13, 2012, at 2:17 PM, Charlie Dickman <3tothe...@comcast.net> wrote:
> 
>>      int vmDataLength = 0;
>>      do {
>>              vmData = [vmRead availableData];
>>              vmDataLength = [vmData length];
>>      } while (vmDataLength != 0);
> 
> Don't you mean "== 0" on the final line?
> Also, spin-loops like this are a really bad idea — this loop is going to 
> consume something like 100% CPU. If you have to loop like this, run the 
> current run loop in between tests.
> 
> —Jens

Charlie Dickman
3tothe...@comcast.net



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