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from django.template.loader import render_to_string
from django.utils.translation import ugettext_lazy as _
from django.utils.safestring import mark_safe
from debug_toolbar.panels import DebugPanel
import cProfile
from pstats import Stats
from colorsys import hsv_to_rgb
class DjangoDebugToolbarStats(Stats):
__root = None
def get_root_func(self):
if self.__root is None:
for func, (cc, nc, tt, ct, callers) in self.stats.iteritems():
if len(callers) == 0:
self.__root = func
break
return self.__root
def print_call_tree_node(self, function, depth, max_depth, cum_filter=0.1):
self.print_line(function, depth=depth)
if depth < max_depth:
for called in self.all_callees[function].keys():
if self.stats[called][3] >= cum_filter:
self.print_call_tree_node(called, depth+1, max_depth, cum_filter=cum_filter)
class FunctionCall(object):
def __init__(self, statobj, func, depth=0, stats=None, css_id='djDebugProfileCall_0', hsv=(0,0.5,1)):
self.statobj = statobj
self.func = func
if stats:
self.stats = stats
else:
self.stats = statobj.stats[func][:4]
self.depth = depth
self.id = css_id
self.hsv=hsv
def parent_classes(self):
return self.parent_classes
def background(self):
print self.hsv
r,g,b = hsv_to_rgb(*self.hsv)
return 'rgb(%f%%,%f%%,%f%%)' %(r*100, g*100, b*100)
def func_std_string(self): # match what old profile produced
func_name = self.func
if func_name[:2] == ('~', 0):
# special case for built-in functions
name = func_name[2]
if name.startswith('<') and name.endswith('>'):
return '{%s}' % name[1:-1]
else:
return name
else:
file_name, line_num, method = self.func
idx = file_name.find('/site-packages/')
if idx > -1:
file_name=file_name[idx+14:]
return "%s:%d(%s)" % (file_name, line_num, method)
def subfuncs(self):
i=0
h,s,v = self.hsv
count = len(self.statobj.all_callees[self.func])
for func, stats in self.statobj.all_callees[self.func].iteritems():
i += 1
h1 = h + (i/count)/(self.depth+1)
if stats[3] == 0:
s1 = 0
else:
s1 = s*(stats[3]/self.stats[3])
yield FunctionCall(self.statobj,
func,
self.depth+1,
stats=stats,
css_id=self.id + '_' + str(i),
hsv=(h1,s1,1))
def as_row(self):
cc, nc, tt, ct = self.stats
if nc != cc:
c = str(nc) + '/' + str(cc)
else:
c = str(nc)
if nc != 0:
ttdivnc = tt/nc
else:
ttdivnc = 0
if cc == 0:
ctdivcc = 0
else:
ctdivcc = ct/cc
indent = 5*self.depth
funcstr = self.func_std_string()
out = """
<td>%(c)s</td>
<td>%(tt)8.3f<br/>(%(ttdivnc)8.3f)</td>
<td>%(ct)8.3f<br/>(%(ctdivcc)8.3f)</td>
<td style='padding-left:%(indent)ipx'>%(funcstr)s</td>
""" % locals()
return mark_safe(out)
class ProfilingDebugPanel(DebugPanel):
"""
Panel that displays the Django version.
"""
name = 'Profiling'
has_content = True
def nav_title(self):
return _('Profiling')
def url(self):
return ''
def title(self):
return _('Profiling')
def process_view(self, request, view_func, view_args, view_kwargs):
self.profiler = cProfile.Profile()
args = (request,) + view_args
return self.profiler.runcall(view_func, *args, **view_kwargs)
def process_response(self, request, response):
self.profiler.create_stats()
self.stats = DjangoDebugToolbarStats(self.profiler)
return response
def add_node(self, func_list, func, max_depth, cum_time=0.1):
func_list.append(func)
if func.depth < max_depth:
for subfunc in func.subfuncs():
if subfunc.stats[3] >= cum_time:
self.add_node(func_list, subfunc, max_depth, cum_time=cum_time)
def content(self):
self.stats.calc_callees()
root = FunctionCall(self.stats, self.stats.get_root_func(), depth=0)
func_list = []
self.add_node(func_list, root, 10, root.stats[3]/8)
context = self.context.copy()
context.update({
'func_list': func_list,
})
return render_to_string('debug_toolbar/panels/profiling.html', context)
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