1 files changed, 169 insertions, 0 deletions
diff --git a/debug_toolbar/panels/profiling.py b/debug_toolbar/panels/profiling.py
new file mode 100644
index 0000000..68aafb7
--- /dev/null
+++ b/debug_toolbar/panels/profiling.py
@@ -0,0 +1,169 @@
+from __future__ import division
+
+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, id=0, parent_ids=[], 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 = id
+        self.parent_ids = parent_ids
+        self.hsv = hsv
+    
+    def parent_classes(self):
+        return self.parent_classes
+    
+    def background(self):
+        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:]
+            
+            file_path, file_name = file_name.rsplit('/', 1)
+            
+            return mark_safe('<span class="path">{0}/</span><span class="file">{1}</span> in <span class="func">{3}</span>(<span class="lineno">{2}</span>)'.format(
+                file_path,
+                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,
+                               id=str(self.id) + '_' + str(i),
+                               parent_ids=self.parent_ids + [self.id],
+                               hsv=(h1,s1,1))
+    
+    def count(self):
+        return self.stats[1]
+    
+    def tottime(self):
+        return self.stats[2]
+    
+    def cumtime(self):
+        cc, nc, tt, ct = self.stats
+        return self.stats[3]
+    
+    def tottime_per_call(self):
+        cc, nc, tt, ct = self.stats
+
+        if nc == 0:
+            return 0
+
+        return tt/nc
+    
+    def cumtime_per_call(self):
+        cc, nc, tt, ct = self.stats
+
+        if cc == 0:
+            return 0
+
+        return ct/cc
+
+    def indent(self):
+        return 16 * self.depth
+
+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)
+        func.has_subfuncs = False
+        if func.depth < max_depth:
+            for subfunc in func.subfuncs():
+                if subfunc.stats[3] >= cum_time:
+                    func.has_subfuncs = True
+                    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)