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import sys
try:
sys.settrace
except AttributeError:
print("SKIP")
raise SystemExit
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,
# reduce full path to some pseudo-relative
'misc' + ''.join(frame.f_code.co_filename.split('tests/misc')[-1:]),
frame.f_lineno,
))
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.
if frame.f_globals['__name__'].find('importlib') != -1:
return
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 trace_generic
trace_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)
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