Duplicated messages from ql.nprint when using the library with absl-py

[kqyang]

See abseil/abseil-py#148 for details.

Here is a sample output:

uname(0x800000fddb90) = 0
I0806 16:03:04.784489 139707194705728 core_utils.py:73] uname(0x800000fddb90) = 0

brk(0x0)
I0806 16:03:04.786140 139707194705728 core_utils.py:73] brk(0x0)

brk(0x1198200)
I0806 16:03:04.786884 139707194705728 core_utils.py:73] brk(0x1198200)

arch_prctl(0x11978c0) = 0
I0806 16:03:04.788332 139707194705728 core_utils.py:73] arch_prctl(0x11978c0) = 0

...

One workaround suggested by the developer of absl-py is to set propagate to False by default. I can create a PR for the change if you are ok with it.

[xwings]

I dont understand. So you want to create a PR for absl-py ?

[kqyang]

@xwings Sorry for not making it clear. I'd like to set up the logger so it does not propagate to the root logger by default to avoid double printing, i.e.

diff --git i/qiling/utils.py w/qiling/utils.py
index 14373376..4b71c450 100644
--- i/qiling/utils.py
+++ w/qiling/utils.py
@@ -166,6 +166,7 @@ def ql_setup_logger(logger_name=None):
         logger_name = 'qiling_%s' % _counter

     logger = logging.getLogger(logger_name)
+    logger.propagate = False
     logger.setLevel(logging.DEBUG)
     return logger

[xwings]

@ucgJhe what do you think

[ucgJhe]

since we don't use propagation mechanism in qiling for now, disable it should be fine.

[xwings]

@kqyang a PR maybe ?

[kqyang]

Done: #442.