Hi, On 16 December 2013 21:59, Abraham V. <abraham.varric...@vvdntech.com> wrote: > On Tue, Dec 17, 2013 at 2:00 AM, Simon Glass <s...@chromium.org> wrote: >> Hi, >> >> On 13 December 2013 01:47, Abraham V. <abraham.varric...@vvdntech.com> wrote: >>> Hello, >>> >>> I just discovered that uboot has a "sandbox" build - output binary is >>> a standard linux application. This prompted me to try stepping through >>> the code with gdb and I'm running into an annoyance. >>> >>> The sandbox binary is splitting into 4 threads (I'm guessing one for >>> each of my cores, am running this on an intel i3). This results in gdb >>> jumping between the different threads every once in a while. >>> >>> Is there anyway to setup the sandbox to run as a single thread? >> >> This is news to me - I have not hit this problem yet. Can you see what >> the threads are? >> >> Regards, >> Simon > > I'm ... embarrassed to report that this is a false alarm. Took me a > couple of days and I was about to send a reply today morning when I > saw your response. What happened is that I used the eclipse-cdt > debugger to try tracing the sandbox application. An interesting > 'feature' of this debugger is that it shows which core a process is > running on. Here are a few (links) screenshots, > > http://imageshack.us/a/img14/2202/ze37.png > http://imageshack.us/a/img855/1153/uwul.png > http://imageshack.us/a/img585/8499/ibz3.png > > It wasn't until yesterday when I realized that, while the application > was jumping between cores, the thread number was exactly the same - it > wasn't a multi-threaded application, but a single threaded one just > bouncing around! This puzzled me so much that I even started a SO > question over the matter, > > http://stackoverflow.com/questions/20608032/while-debugging-will-a-single-threaded-application-jump-between-cores > > Turns out that the scheduler knocked me off-balance. Can't believe I'm > saying this, but I miss the days when everything ran on a single > thread/processor core.
OK that's good, thanks for the detailed explanation, I'm sure others will hit this. Regards, Simon > > A little embarrassed, > Abraham V. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot