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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__"
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: %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:
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()
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