On Tue, Sep 20, 2011 at 05:05:45PM +0800, hkran wrote: > 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?
Looks like your current working directory is scripts/ so simpletrace.py will be unable to find the trace-events file which is in the parent directory. Usually I stay in QEMU's root directory and just run: $ qemu # ...generate the trace $ scripts/simpletrace.py trace-events trace-$PID > Additionally, There is something about WIN32 in patch, How can I > compile a qemu running on windows? Could you give a reference? Search for 'mingw' in qemu-doc.texi for instructions. Stefan
