[PATCH v4 00/15] qemu_iotests: improve debugging options

[Emanuele Giuseppe Esposito]

This series adds the option to attach gdbserver and valgrind
to the QEMU binary running in qemu_iotests.
It also allows to redirect QEMU binaries output of the python tests
to the stdout, instead of a log file.

Patches 1-6 introduce the -gdb option to both python and bash tests, 
7-10 extend the already existing -valgrind flag to work also on 
python tests, and patch 11 introduces -p to enable logging to stdout.

In particular, patches 1,5,10 focus on extending the QMP socket timers
when using gdb/valgrind, otherwise the python tests will fail due to
delays in the QMP responses.

This series is tested on the previous serie
"qemu-iotests: quality of life improvements"
but independent from it, so it can be applied separately.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
---
v4:
* Rename environment variable from GDB_QEMU to GDB_OPTIONS
* This time test 297 (pylint) passes [Max]
* Refactor the qmp_timer field in machine.py, and add a new 
  parameter in machine.py and subclasses constructor [John]
* Add additional check in patch 4 to cover the case where
  GDB_OPTIONS is empty

Emanuele Giuseppe Esposito (15):
  python: qemu: add timer parameter for qmp.accept socket
  python: qemu: pass the wrapper field from QEMUQtestmachine to
    QEMUMachine
  docs/devel/testing: add debug section to the QEMU iotests chapter
  qemu-iotests: add option to attach gdbserver
  qemu-iotests: delay QMP socket timers
  qemu_iotests: insert gdbserver command line as wrapper for qemu binary
  qemu-iotests: add gdbserver option to script tests too
  docs/devel/testing: add -gdb option to the debugging section of QEMU
    iotests
  qemu-iotests: extend the check script to support valgrind for python
    tests
  qemu-iotests: extent QMP socket timeout when using valgrind
  qemu-iotests: allow valgrind to read/delete the generated log file
  qemu-iotests: insert valgrind command line as wrapper for qemu binary
  docs/devel/testing: add -valgrind option to the debug section of QEMU
    iotests
  qemu-iotests: add option to show qemu binary logs on stdout
  docs/devel/testing: add -p option to the debug section of QEMU iotests

 docs/devel/testing.rst        | 30 +++++++++++++++++++
 python/qemu/machine.py        |  7 +++--
 python/qemu/qtest.py          |  9 ++++--
 tests/qemu-iotests/check      | 15 +++++++---
 tests/qemu-iotests/common.rc  |  8 ++++-
 tests/qemu-iotests/iotests.py | 56 +++++++++++++++++++++++++++++++----
 tests/qemu-iotests/testenv.py | 25 ++++++++++++++--
 7 files changed, 132 insertions(+), 18 deletions(-)

-- 
2.30.2