Re: [Qemu-devel] [PATCH 0/2] Make simpletrace work on Windows

[hkran <hkran@vnet.linux.ibm.com>]

On 09/09/2011 05:37 PM, Stefan Hajnoczi wrote:
> The 'simple' trace backend uses pthreads and does not work on Windows.  These
> patches switch from pthreads to glib so that the code builds on all platforms
> supported by glib.
>
> Only one thing I'm unhappy about: the simpletrace write-out thread used to
> block all signals.  I have removed that code and don't expect glib to do it for
> me.  I'm not sure if there is a problem if signal handlers are invoked in the
> write-out thread instead of a QEMU thread.  Any thoughts?
>
> Stefan Hajnoczi (2):
>    trace: portable simple trace backend using glib
>    trace: use binary file open mode in simpletrace
>
>   trace/simple.c |   58 ++++++++++++++++++++++++++-----------------------------
>   1 files changed, 27 insertions(+), 31 deletions(-)
>
Stefan,

I applied the patch and make &install it.

After a round of running of the qemu with the patch, a trace file is 
here, but when I want to open it like this,
./simpletrace.py trace-events trace-29948    //trace-29948 is my tracefile
  an error occurs:

Traceback (most recent call last):
   File "./simpletrace.py", line 151, in <module>
     run(Formatter())
   File "./simpletrace.py", line 131, in run
     events = parse_events(open(sys.argv[1], 'r'))
IOError: [Errno 2] No such file or directory: 'trace-events'

Am I using it in a right way?

Additionally, There is something about WIN32 in patch, How can I compile 
a qemu running on windows? Could you give a reference? thanks