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"""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__
#
# 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__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
# Recipe 14.10 from the Python Cookbook.
import string
import sys
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: %d\n" % (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(' %s\n' % 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 : %s\n' % (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:
def memory():
return 0
else:
def memory():
res = resource.getrusage(resource.RUSAGE_SELF)
return res[4]
caller_dicts = {}
def caller(back=0):
import traceback
tb = traceback.extract_stack(limit=3+back)
key = tb[1][:3]
try:
entry = caller_dicts[key]
except KeyError:
entry = caller_dicts[key] = {}
key = tb[0][:3]
try:
entry[key] = entry[key] + 1
except KeyError:
entry[key] = 1
def dump_caller_counts(file=sys.stdout):
keys = caller_dicts.keys()
keys.sort()
for k in keys:
file.write("Callers of %s:%d(%s):\n" % func_shorten(k))
counts = caller_dicts[k]
callers = counts.keys()
callers.sort()
for c in callers:
#file.write(" counts[%s] = %s\n" % (c, counts[c]))
t = ((counts[c],) + func_shorten(c))
file.write(" %6d %s:%d(%s)\n" % t)
shorten_list = [
( '/scons/SCons/', 1),
( '/src/engine/SCons/', 1),
( '/usr/lib/python', 0),
]
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])
f = f[i:]
break
return (f,)+func_tuple[1:]
TraceFP = {}
TraceDefault = '/dev/tty'
def Trace(msg, file=None, mode='a'):
"""Write a trace a 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)
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