Profiling Actions - Revision history

Alan Fehr: /* Drawbacks */

2006-06-20T05:38:33Z

‎Drawbacks

Alan Fehr at 17:00, 19 June 2006

2006-06-19T17:00:13Z

Alan Fehr at 16:43, 19 June 2006

2006-06-19T16:43:31Z

Alan Fehr at 16:36, 19 June 2006

2006-06-19T16:36:44Z

Alan Fehr at 16:32, 19 June 2006

2006-06-19T16:32:57Z

Alan Fehr at 15:42, 19 June 2006

2006-06-19T15:42:36Z

Alan Fehr at 15:32, 19 June 2006

2006-06-19T15:32:56Z

Alan Fehr at 15:23, 19 June 2006

2006-06-19T15:23:43Z

New page

[[Category:Profiler]]
[[Category:Projects]]
= Overview =
The goal of this project is to add the concept of actions to the Eiffel Studio profiler to make the timing of GUI applications easier.

= Main Functionality =
* In the code the user can add

action_timer.start_action ("myAction")

-- action to time

action_timer.stop_action

: around interesting parts of code.

* The tool checks if the directory already contains a file named myAction.br (base run). If it does a file named myAction.cr (comparison run) is created, otherwise the base run file is created.
* Then the user can view the timed actions (requires base and comparison runs exist) to see if his code modifications slowed down or speeded up the code

= Implementation =
I modified the files eif_option.h and option.c in the run-time. When an action ends I save the profiling information into a file with the name of the action. After that I free the profiling stack and reinitialize it:
ht_free(class_table);
prof_stack_free();
initprf();
For this to work I modified <tt>stop_profile</tt> to check a flag and not report a profile stack corruption if the flag is true.

@@ Line 32: / Line 32: @@
 = Drawbacks =
 * It's not possible to have nested actions. This would require larger changes to the run-time.
 = Screenshots =
 [[Image:action_timer_screenshot.jpg]]
 = Responsible =
 [[User:Alan Fehr|Alan Fehr]]

@@ Line 24: / Line 24: @@
   initprf();
 * For this to work <tt>stop_profile</tt> has been modified to check a flag and not report a profile stack corruption if the flag is true.
 * When the Action Timer is invoked it checks the given directory for .br and .cr files and if both are present with the same name the action is added to the list.

← Older revision		Revision as of 16:43, 19 June 2006
Line 33:		Line 33:
	= Screenshots =		= Screenshots =
	[[Image:action_timer_screenshot.jpg]]		[[Image:action_timer_screenshot.jpg]]
		+	= Responsible =
		+	[[User:Alan Fehr\|Alan Fehr]]

@@ Line 29: / Line 29: @@
 * A new class inheriting from <tt>PROFILE_INFORMATION</tt> has been added to make total execution time always available.
 * The actions are then displayed with a comparison of the execution times and with detailed profiling information.
 = Screenshots =
 [[Image:action_timer_screenshot.jpg]]

← Older revision		Revision as of 16:32, 19 June 2006
Line 30:		Line 30:
	* The actions are then displayed with a comparison of the execution times and with detailed profiling information.		* The actions are then displayed with a comparison of the execution times and with detailed profiling information.
	= Screenshots =		= Screenshots =
		+	[[Image:action_timer_screenshot.jpg]]

@@ Line 19: / Line 19: @@
 = Implementation =
-I modified the files eif_option.h and option.c in the run-time. When an action ends I save the profiling information into a file with the name of the action. After that I free the profiling stack and reinitialize it:
+* I modified the files eif_option.h and option.c in the run-time. When an action ends I save the profiling information into a file with the name of the action. After that the profiling stack is freed and reinitialized:
   ht_free(class_table);
   prof_stack_free();
   initprf();
-For this to work I modified <tt>stop_profile</tt> to check a flag and not report a profile stack corruption if the flag is true.
+* For this to work <tt>stop_profile</tt> has been modified to check a flag and not report a profile stack corruption if the flag is true.
-When the Action Timer is invoked it checks the given directory for .br and .cr files and if both are present with the same name the action is added to the list. The files are parsed using a subclass of <tt>PROFILE_CONVERTER</tt> which overides a feature so the converted information isn't written to disk.
+* When the Action Timer is invoked it checks the given directory for .br and .cr files and if both are present with the same name the action is added to the list.

← Older revision		Revision as of 15:32, 19 June 2006
Line 24:		Line 24:
	initprf();		initprf();
	For this to work I modified <tt>stop_profile</tt> to check a flag and not report a profile stack corruption if the flag is true.		For this to work I modified <tt>stop_profile</tt> to check a flag and not report a profile stack corruption if the flag is true.
		+
		+	When the Action Timer is invoked it checks the given directory for .br and .cr files and if both are present with the same name the action is added to the list. The files are parsed using a subclass of <tt>PROFILE_CONVERTER</tt> which overides a feature so the converted information isn't written to disk.