1 files changed, 94 insertions, 0 deletions
diff --git a/examples/summaries/cocoa/metrics.py b/examples/summaries/cocoa/metrics.py
new file mode 100644
index 000000000000..6b82ff3b3015
--- /dev/null
+++ b/examples/summaries/cocoa/metrics.py
@@ -0,0 +1,94 @@
+"""
+Objective-C runtime wrapper for use by LLDB Python formatters
+
+part of The LLVM Compiler Infrastructure
+This file is distributed under the University of Illinois Open Source
+License. See LICENSE.TXT for details.
+"""
+import lldb
+import time, datetime
+import inspect
+
+class TimeMetrics:
+	@staticmethod
+	def generate(label=None):
+		return TimeMetrics(label)
+	
+	def __init__(self,lbl=None):
+		self.label = "" if lbl is None else lbl
+		pass
+	
+	def __enter__(self):
+		caller = inspect.stack()[1]
+		self.function = str(caller)
+		self.enter_time = time.clock()
+	
+	def __exit__(self, a,b,c):
+		self.exit_time = time.clock()
+		print("It took " + str(self.exit_time - self.enter_time) + " time units to run through " + self.function + self.label)
+		return False
+
+class Counter:
+	def __init__(self):
+		self.count = 0
+		self.list = []
+	def update(self,name):
+		self.count = self.count + 1
+		# avoid getting the full dump of this ValueObject just to save its metrics
+		if isinstance(name,lldb.SBValue):
+			self.list.append(name.GetName())
+		else:
+			self.list.append(str(name))
+	def __str__(self):
+		return str(self.count) + " times, for items [" + str(self.list) + "]"
+
+class MetricsPrinter_Verbose:
+	def __init__(self,metrics):
+		self.metrics = metrics
+	def __str__(self):
+		string = ""
+		for key,value in self.metrics.metrics.items():
+			string = string + "metric " + str(key) + ": " + str(value) + "\n"
+		return string
+
+class MetricsPrinter_Compact:
+	def __init__(self,metrics):
+		self.metrics = metrics
+	def __str__(self):
+		string = ""
+		for key,value in self.metrics.metrics.items():
+			string = string + "metric " + str(key) + " was hit " + str(value.count) + " times\n"
+		return string
+
+class Metrics:
+	def __init__(self):
+		self.metrics = {}
+
+	def add_metric(self,name):
+		self.metrics[name] = Counter()
+
+	def metric_hit(self,metric,trigger):
+		self.metrics[metric].update(trigger)
+
+	def __getitem__(self,key):
+		return self.metrics[key]
+
+	def __getattr__(self,name):
+		if name == 'compact':
+			return MetricsPrinter_Compact(self)
+		if name == 'verbose':
+			return MetricsPrinter_Verbose(self)
+		raise AttributeError("%r object has no attribute %r" %
+			                         (type(self).__name__, name))
+
+	def __str__(self):
+		return str(self.verbose)
+
+	def metric_success(self,metric):
+		total_count = 0
+		metric_count = self[metric].count
+		for key,value in self.metrics.items():
+			total_count = total_count + value.count
+		if total_count > 0:
+			return metric_count / float(total_count)
+		return 0