Re: [Qemu-devel] [PATCH] scripts: add 'qemu coroutine' command to qemu-gdb.py

[Stefan Hajnoczi]

On Thu, Mar 26, 2015 at 10:42 PM, Stefan Hajnoczi <address@hidden> wrote:
> The 'qemu coroutine <coroutine-address>' GDB command prints the
> backtrace for a CoroutineUContext.  This is useful for peeking inside
> yielded coroutines that are waiting for file descriptor events, timers,
> etc.
>
> For example:
>
>   $ gdb tests/test-coroutine
>   (gdb) b test_yield
>   (gdb) r
>   (gdb) b qemu_coroutine_enter
>   (gdb) c
>   (gdb) c
>   Continuing.
>
>   Breakpoint 2, qemu_coroutine_enter (co=0x555555c66520, opaque=0x0) at 
> qemu-coroutine.c:103
>   103   {
>   (gdb) source scripts/qemu-gdb.py
>   (gdb) qemu coroutine 0x555555c66520
>   #0  0x000055555557a740 in qemu_coroutine_switch (from_=<optimized out>, 
> to_=0x7ffff7f90a70, action=COROUTINE_YIELD) at coroutine-ucontext.c:177
>   #1  0x0000555555566af9 in yield_5_times (opaque=0x7fffffffdbb7) at 
> tests/test-coroutine.c:107
>   #2  0x000055555557a7aa in coroutine_trampoline (i0=<optimized out>, 
> i1=<optimized out>) at coroutine-ucontext.c:80
>   #3  0x00007ffff08de000 in __start_context () at /lib64/libc.so.6
>
> Signed-off-by: Stefan Hajnoczi <address@hidden>
> ---
>  scripts/qemu-gdb.py | 75 
> +++++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 75 insertions(+)

Thanks, applied to my block-next branch:
https://github.com/stefanha/qemu/commits/block-next

Stefan