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__version__ = "$Id$"
import sys
from time import time
class Trace:
def __init__(self):
self.dispatch = {
'call': self.trace_dispatch_call,
'return': self.trace_dispatch_return,
'exception': self.trace_dispatch_exception,
}
self.curframe = None
self.depth = -1
self.stdout = sys.stdout
def run(self, cmd, globals = None, locals = None):
if globals is None:
import __main__
globals = __main__.__dict__
if locals is None:
locals = globals
sys.setprofile(self.trace_dispatch)
try:
exec cmd in globals, locals
finally:
sys.setprofile(None)
def runcall(self, func, *args):
sys.setprofile(self.trace_dispatch)
try:
apply(func, args)
finally:
sys.setprofile(None)
def trace_dispatch(self, frame, event, arg):
curstdout = sys.stdout
sys.stdout = self.stdout
self.dispatch[event](frame, arg)
sys.stdout = curstdout
def trace_dispatch_call(self, frame, arg):
self.depth = self.depth + 1
self.curframe = frame
code = frame.f_code
funcname = code.co_name
if not funcname:
funcname = '<lambda>'
filename = code.co_filename
lineno = frame.f_lineno
if lineno == -1:
code = code.co_code
if ord(code[0]) == 127: # SET_LINENO
lineno = ord(code[1]) | ord(code[2]) << 8
pframe = frame.f_back
if pframe:
plineno = ' (%d)' % pframe.f_lineno
else:
plineno = ''
print '%s> %s:%d %s%s' % (' '*self.depth,filename,lineno,funcname,plineno)
frame.f_locals['__start_time'] = time()
def trace_dispatch_return(self, frame, arg):
try:
t = frame.f_locals['__start_time']
except KeyError:
t = ''
else:
t = ' [%.4f]' % (time() - t)
funcname = frame.f_code.co_name
self.curframe = frame.f_back
if not funcname:
funcname = '<lambda>'
filename = frame.f_code.co_filename
print '%s< %s:%d %s%s' % (' '*self.depth,filename,frame.f_lineno,funcname,t)
self.depth = self.depth - 1
def trace_dispatch_exception(self, frame, arg):
t = ''
if frame is not self.curframe:
try:
t = frame.f_locals['__start_time']
except KeyError:
pass
else:
t = ' [%.4f]' % (time() - t)
self.depth = self.depth - 1
self.curframe = frame
funcname = frame.f_code.co_name
if not funcname:
funcname = '<lambda>'
filename = frame.f_code.co_filename
print '%sE %s:%d %s%s' % (' '*(self.depth+1),filename,frame.f_lineno,funcname,t)
def set_trace(self):
try:
raise 'xyzzy'
except:
frame = sys.exc_traceback.tb_frame
while frame.f_code.co_name != 'set_trace':
frame = frame.f_back
d = 0
while frame:
d = d + 1
frame = frame.f_back
self.depth = d
sys.setprofile(self.trace_dispatch)
def run(cmd, globals = None, locals = None):
Trace().run(cmd, globals, locals)
def runcall(*func_args):
apply(Trace().runcall, funcargs)
def set_trace():
Trace().set_trace()
def unset_trace():
sys.setprofile(None)
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