Debug.py.svn-base
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上传日期:2018-11-18
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文件大小:6k
- """SCons.Debug
- Code for debugging SCons internal things. Not everything here is
- guaranteed to work all the way back to Python 1.5.2, and shouldn't be
- needed by most users.
- """
- #
- # Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 The SCons Foundation
- #
- # Permission is hereby granted, free of charge, to any person obtaining
- # a copy of this software and associated documentation files (the
- # "Software"), to deal in the Software without restriction, including
- # without limitation the rights to use, copy, modify, merge, publish,
- # distribute, sublicense, and/or sell copies of the Software, and to
- # permit persons to whom the Software is furnished to do so, subject to
- # the following conditions:
- #
- # The above copyright notice and this permission notice shall be included
- # in all copies or substantial portions of the Software.
- #
- # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
- # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
- # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
- # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
- # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- #
- __revision__ = "src/engine/SCons/Debug.py 3057 2008/06/09 22:21:00 knight"
- import os
- import string
- import sys
- # Recipe 14.10 from the Python Cookbook.
- try:
- import weakref
- except ImportError:
- def logInstanceCreation(instance, name=None):
- pass
- else:
- def logInstanceCreation(instance, name=None):
- if name is None:
- name = instance.__class__.__name__
- if not tracked_classes.has_key(name):
- tracked_classes[name] = []
- tracked_classes[name].append(weakref.ref(instance))
- tracked_classes = {}
- def string_to_classes(s):
- if s == '*':
- c = tracked_classes.keys()
- c.sort()
- return c
- else:
- return string.split(s)
- def fetchLoggedInstances(classes="*"):
- classnames = string_to_classes(classes)
- return map(lambda cn: (cn, len(tracked_classes[cn])), classnames)
-
- def countLoggedInstances(classes, file=sys.stdout):
- for classname in string_to_classes(classes):
- file.write("%s: %dn" % (classname, len(tracked_classes[classname])))
- def listLoggedInstances(classes, file=sys.stdout):
- for classname in string_to_classes(classes):
- file.write('n%s:n' % classname)
- for ref in tracked_classes[classname]:
- obj = ref()
- if obj is not None:
- file.write(' %sn' % repr(obj))
- def dumpLoggedInstances(classes, file=sys.stdout):
- for classname in string_to_classes(classes):
- file.write('n%s:n' % classname)
- for ref in tracked_classes[classname]:
- obj = ref()
- if obj is not None:
- file.write(' %s:n' % obj)
- for key, value in obj.__dict__.items():
- file.write(' %20s : %sn' % (key, value))
- if sys.platform[:5] == "linux":
- # Linux doesn't actually support memory usage stats from getrusage().
- def memory():
- mstr = open('/proc/self/stat').read()
- mstr = string.split(mstr)[22]
- return int(mstr)
- else:
- try:
- import resource
- except ImportError:
- try:
- import win32process
- import win32api
- except ImportError:
- def memory():
- return 0
- else:
- def memory():
- process_handle = win32api.GetCurrentProcess()
- memory_info = win32process.GetProcessMemoryInfo( process_handle )
- return memory_info['PeakWorkingSetSize']
- else:
- def memory():
- res = resource.getrusage(resource.RUSAGE_SELF)
- return res[4]
- # returns caller's stack
- def caller_stack(*backlist):
- import traceback
- if not backlist:
- backlist = [0]
- result = []
- for back in backlist:
- tb = traceback.extract_stack(limit=3+back)
- key = tb[0][:3]
- result.append('%s:%d(%s)' % func_shorten(key))
- return result
- caller_bases = {}
- caller_dicts = {}
- # trace a caller's stack
- def caller_trace(back=0):
- import traceback
- tb = traceback.extract_stack(limit=3+back)
- tb.reverse()
- callee = tb[1][:3]
- caller_bases[callee] = caller_bases.get(callee, 0) + 1
- for caller in tb[2:]:
- caller = callee + caller[:3]
- try:
- entry = caller_dicts[callee]
- except KeyError:
- caller_dicts[callee] = entry = {}
- entry[caller] = entry.get(caller, 0) + 1
- callee = caller
- # print a single caller and its callers, if any
- def _dump_one_caller(key, file, level=0):
- l = []
- for c,v in caller_dicts[key].items():
- l.append((-v,c))
- l.sort()
- leader = ' '*level
- for v,c in l:
- file.write("%s %6d %s:%d(%s)n" % ((leader,-v) + func_shorten(c[-3:])))
- if caller_dicts.has_key(c):
- _dump_one_caller(c, file, level+1)
- # print each call tree
- def dump_caller_counts(file=sys.stdout):
- keys = caller_bases.keys()
- keys.sort()
- for k in keys:
- file.write("Callers of %s:%d(%s), %d calls:n"
- % (func_shorten(k) + (caller_bases[k],)))
- _dump_one_caller(k, file)
- shorten_list = [
- ( '/scons/SCons/', 1),
- ( '/src/engine/SCons/', 1),
- ( '/usr/lib/python', 0),
- ]
- if os.sep != '/':
- def platformize(t):
- return (string.replace(t[0], '/', os.sep), t[1])
- shorten_list = map(platformize, shorten_list)
- del platformize
- def func_shorten(func_tuple):
- f = func_tuple[0]
- for t in shorten_list:
- i = string.find(f, t[0])
- if i >= 0:
- if t[1]:
- i = i + len(t[0])
- return (f[i:],)+func_tuple[1:]
- return func_tuple
- TraceFP = {}
- if sys.platform == 'win32':
- TraceDefault = 'con'
- else:
- TraceDefault = '/dev/tty'
- def Trace(msg, file=None, mode='w'):
- """Write a trace message to a file. Whenever a file is specified,
- it becomes the default for the next call to Trace()."""
- global TraceDefault
- if file is None:
- file = TraceDefault
- else:
- TraceDefault = file
- try:
- fp = TraceFP[file]
- except KeyError:
- try:
- fp = TraceFP[file] = open(file, mode)
- except TypeError:
- # Assume we were passed an open file pointer.
- fp = file
- fp.write(msg)
- fp.flush()