service.enable_profiling()
enable_profiling() re-enables the profiling process.
Interface: enable_profiling()
Sample - Calling Method
service.enable_profiling()
- None
None
Remarks:- Counteracts the effects of disable_profiling()
- Used with disable_profiling() to control exactly what code is profiled.
- The backtest must already be set to profile.
- enable_profiling does not begin the profiling process, it only continues the process.
- Has no effect in forward testing.
Use enable_profiling() and disable_profiling to ensure accurate profiling results.
from cloudquant.interfaces import Strategy
class Enable_Profiling(Strategy):
# note that this doesn't start with "self" because it's a @staticmethod
@classmethod
def is_symbol_qualified(cls, symbol, md, service, account):
return symbol == 'AAL'
# called at the beginning of each instance
def on_start(self, md, order, service, account):
self.minute_bar_count = 0
def on_minute_bar(self, event, md, order, service, account, bar):
# disable profiling on the first call of the methods to avoid innacurate data
if self.minute_bar_count == 0:
service.disable_profiling()
# test calls
print 'service.time_to_string(event.timestamp)'
print md.L1.last
print md.bar.minute(-1)
print md.bar.daily(-1)
service.symbol_list.get_handle('448CBB9E-CFDE-4A55-BB7B-7521080E5A0B')
# re-enable profiling
if self.minute_bar_count == 0:
service.enable_profiling()
# terminate after the fifth bar
elif self.minute_bar_count == 4:
service.terminate()
# increment counter
self.minute_bar_count += 1
Profiling Results
Timer unit: 1e-06 s
Total time: 0 s
File: job/enable_profiling.py
Function: is_symbol_qualified at line 6
Line # Hits Time Per Hit % Time Line Contents
==============================================================
6 @classmethod
7 def is_symbol_qualified(cls, symbol, md, service, account):
8 return symbol == 'AAL'
Total time: 7e-06 s
File: job/enable_profiling.py
Function: on_start at line 11
Line # Hits Time Per Hit % Time Line Contents
==============================================================
11 def on_start(self, md, order, service, account):
12 1 7 7.0 100.0 self.minute_bar_count = 0
Total time: 0.056938 s
File: job/enable_profiling.py
Function: on_minute_bar at line 14
Line # Hits Time Per Hit % Time Line Contents
==============================================================
14 def on_minute_bar(self, event, md, order, service, account, bar):
15
16 # disable profiling on the first call of the methods to avoid innacurate data
17 5 16 3.2 0.0 if self.minute_bar_count == 0:
18 service.disable_profiling()
19
20 # test calls
21 4 67 16.8 0.1 print 'service.time_to_string(event.timestamp)'
22 4 89 22.2 0.2 print md.L1.last
23 4 28230 7057.5 49.6 print md.bar.minute(-1)
24 4 28360 7090.0 49.8 print md.bar.daily(-1)
25 4 142 35.5 0.2 service.symbol_list.get_handle('448CBB9E-CFDE-4A55-BB7B-7521080E5A0B')
26
27 # re-enable profiling
28 4 6 1.5 0.0 if self.minute_bar_count == 0:
29 service.enable_profiling()
30
31 # terminate after the fifth bar
32 4 2 0.5 0.0 elif self.minute_bar_count == 4:
33 1 18 18.0 0.0 service.terminate()
34
35 # increment counter
36 5 8 1.6 0.0 self.minute_bar_count += 1