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Re: How to use the trace facilities


On Mon, Apr 16, 2007 at 05:18:11PM -0700, Rob Duncan wrote:
> I'm having a bit of trouble understanding how to use the trace
> facilities.  I have configured my system with CYGDBG_USE_TRACING
> enabled (and I also have CYGDBG_USE_ASSERTS enabled), and I am getting
> a lot of messages generated from the kernel.  For example:
> 
> TRACE: clock.cxx           [ 706] void Cyg_Alarm::initialize()
> TRACE: clock.cxx           [ 285] void Cyg_Counter::add_alarm()
> TRACE: clock.cxx           [ 285] void Cyg_Counter::add_alarm()
> TRACE: clock.cxx           [ 706] void Cyg_Alarm::initialize()
> TRACE: thread.cxx          [ 337] static void Cyg_Thread::sleep()
> TRACE: mlqueue.cxx         [ 276] void
> Cyg_Scheduler_Implementation::rem_thread()
> TRACE: mlqueue.cxx         [ 276] void
> Cyg_Scheduler_Implementation::rem_thread()
> TRACE: mlqueue.cxx         [ 330] void
> Cyg_Scheduler_Implementation::rem_thread()
> TRACE: thread.cxx          [ 358] static void Cyg_Thread::sleep()
> TRACE: mlqueue.cxx         [ 748] void
> Cyg_ThreadQueue_Implementation::enqueue()
> TRACE: mlqueue.cxx         [ 748] void
> Cyg_ThreadQueue_Implementation::enqueue()
> TRACE: mlqueue.cxx         [ 825] void
> Cyg_ThreadQueue_Implementation::enqueue()
> TRACE: mlqueue.cxx         [ 119] Cyg_Thread*
> Cyg_Scheduler_Implementation::schedule()
> 
> What is the recommended way of turning all of these off and
> restricting the tracing to the code I explicitly want enabled?

There are lots of comments in the header file
packages/infra/current/include/cyg_trace.h.

Basically you need to turn it on/off per compilation unit using
#defines.

        Andrew

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