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import sys
try:
sys.settrace
except AttributeError:
print("SKIP")
raise SystemExit
if sys.version.startswith("3.12"):
# There is a CPython change in settrace that is reverted in 3.13!
print("WARNING: this test will fail when compared to CPython 3.12.x behaviour")
def print_stacktrace(frame, level=0):
# Ignore CPython specific helpers.
if frame.f_globals["__name__"].find("importlib") != -1:
print_stacktrace(frame.f_back, level)
return
print(
"%2d: %s@%s:%s => %s:%d"
% (
level,
" ",
frame.f_globals["__name__"],
frame.f_code.co_name,
# Keep just the filename.
"sys_settrace_" + frame.f_code.co_filename.split("sys_settrace_")[-1],
max(
1, frame.f_lineno
), # CPython 3.11 emits `0` where CPython 3.6 emits `1` for the "call" event corresponding to import.
)
)
if frame.f_back:
print_stacktrace(frame.f_back, level + 1)
class _Prof:
trace_count = 0
def trace_tick(self, frame, event, arg):
self.trace_count += 1
print_stacktrace(frame)
__prof__ = _Prof()
alice_handler_set = False
def trace_tick_handler_alice(frame, event, arg):
print("### trace_handler::Alice event:", event)
__prof__.trace_tick(frame, event, arg)
return trace_tick_handler_alice
bob_handler_set = False
def trace_tick_handler_bob(frame, event, arg):
print("### trace_handler::Bob event:", event)
__prof__.trace_tick(frame, event, arg)
return trace_tick_handler_bob
def trace_tick_handler(frame, event, arg):
# Ignore CPython specific helpers.
to_ignore = ["importlib", "zipimport", "encodings"]
frame_name = frame.f_globals["__name__"]
if any(name in frame_name for name in to_ignore):
return
# Lines 4,5,7 create the `const` lambda, and line `15` is a `_X = const()` which
# MicroPython will not see as it's optimised out.
if "sys_settrace_importme" in frame.f_code.co_filename and frame.f_lineno in (4, 5, 7, 15):
return trace_tick_handler
print("### trace_handler::main event:", event)
__prof__.trace_tick(frame, event, arg)
if frame.f_code.co_name != "factorial":
return trace_tick_handler
global alice_handler_set
if event == "call" and not alice_handler_set:
alice_handler_set = True
return trace_tick_handler_alice
global bob_handler_set
if event == "call" and not bob_handler_set:
bob_handler_set = True
return trace_tick_handler_bob
return trace_tick_handler
def factorial(n):
if n == 0:
return 1
else:
return n * factorial(n - 1)
def do_tests():
# These commands are here to demonstrate some execution being traced.
print("Who loves the sun?")
print("Not every-", factorial(3))
from sys_settrace_subdir import sys_settrace_generic
sys_settrace_generic.run_tests()
return
sys.settrace(trace_tick_handler)
do_tests()
sys.settrace(None)
print("\n------------------ script exited ------------------")
print("Total traces executed: ", __prof__.trace_count)
|
