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