cs_timer_stats.h File Reference

#include "cs_defs.h"
#include "cs_timer.h"
#include "cs_time_plot.h"

Include dependency graph for cs_timer_stats.h:

Go to the source code of this file.

Functions
void	cs_timer_stats_initialize (void)
	Initialize timer statistics handling. More...
void	cs_timer_stats_finalize (void)
	Finalize timer statistics handling. More...
void	cs_timer_stats_set_start_time (int time_id)
	Set a start time for time stats. More...
void	cs_timer_stats_set_plot_options (cs_time_plot_format_t format, int frequency, int n_buffer_steps, double flush_wtime)
	Set global timer statistics plot options. More...
void	cs_timer_stats_increment_time_step (void)
	Increment time step for timer statistics. More...
int	cs_timer_stats_create (const char *parent_name, const char *name, const char *label)
	Create a timer statistics structure. More...
int	cs_timer_stats_id_by_name (const char *name)
	Return the id of a defined statistic based on its name. More...
void	cs_timer_stats_set_plot (int id, int plot)
	Enable or disable plotting for a timer statistic. More...
int	cs_timer_stats_is_active (int id)
	indicate if a timer for a given statistic is currently active. More...
void	cs_timer_stats_start (int id)
	Start a timer for a given statistic. More...
void	cs_timer_stats_stop (int id)
	Stop a timer for a given statistic. More...
int	cs_timer_stats_switch (int id)
	Start a timer for a given statistic, stopping previous timers of the same type which are not a parent, and starting inactive parent timers if necessary. More...
void	cs_timer_stats_add_diff (int id, const cs_timer_t *t0, const cs_timer_t *t1)
	Add a timing range to an inactive timer. More...
void	cs_timer_stats_define_defaults (void)
	Define default timer statistics. More...

Function Documentation

cs_timer_stats_add_diff()

void cs_timer_stats_add_diff	(	int	id,
		const cs_timer_t *	t0,
		const cs_timer_t *	t1
	)

Add a timing range to an inactive timer.

This does not modify parent timers, so consistency of active and inactive timers must be ensured by the caller.

Parameters

[in]	id	id of statistic
[in]	t0	oldest timer value
[in]	t1	most recent timer value

cs_timer_stats_create()

int cs_timer_stats_create	(	const char *	parent_name,
		const char *	name,
		const char *	label
	)

Create a timer statistics structure.

Parameters

[in]	parent_name	name of parent statistic, or NULL
[in]	name	associated canonical name
[in]	label	associated label, or NULL

Returns

id of new timer stats structure

cs_timer_stats_define_defaults()

void cs_timer_stats_define_defaults

(

void

)

Define default timer statistics.

This creates 2 statistic timer trees, whose roots ids are:

• 0 for computational operations
• 1 for computational stages

cs_timer_stats_finalize()

void cs_timer_stats_finalize

(

void

)

Finalize timer statistics handling.

cs_timer_stats_id_by_name()

int cs_timer_stats_id_by_name

(

const char *

name

)

Return the id of a defined statistic based on its name.

If no timer with the given name exists, -1 is returned.

Parameters

[in]

name

statistic name

Returns

id of the statistic, or -1 if not found

If no timer with the given name exists, -1 is returned.

Parameters

[in]

name

statitic name

Returns

id of the statistic, or -1 if not found

cs_timer_stats_increment_time_step()

void cs_timer_stats_increment_time_step

(

void

)

Increment time step for timer statistics.

cs_timer_stats_initialize()

void cs_timer_stats_initialize

(

void

)

Initialize timer statistics handling.

This creates 2 statistic timer trees, whose roots ids are:

• 0 for computational operations
• 1 for computational stages

cs_timer_stats_is_active()

int cs_timer_stats_is_active

(

int

id

)

indicate if a timer for a given statistic is currently active.

Parameters

[in]

id

id of statistic

Returns

1 if active, 0 otherwise

cs_timer_stats_set_plot()

void cs_timer_stats_set_plot	(	int	id,
		int	plot
	)

Enable or disable plotting for a timer statistic.

By default plotting is enabled for all statistics, except root statistic 1 (as it measures the same total time as root 0, with a different subtree).

This function is only effective before the first call to cs_timer_stats_increment_time_step.

Parameters

[in]	id	id of statistic
[in]	plot	0 to disable, 1 to enable

cs_timer_stats_set_plot_options()

void cs_timer_stats_set_plot_options	(	cs_time_plot_format_t	format,
		int	frequency,
		int	n_buffer_steps,
		double	flush_wtime
	)

Set global timer statistics plot options.

This function is only effective before the first call to cs_timer_stats_increment_time_step.

Parameters

[in]	format	associated file format
[in]	frequency	plot every n time steps
[in]	n_buffer_steps	number of time steps in output buffer if file is not to be kept open
[in]	flush_wtime	elapsed time interval between file flushes (if < 0, no forced flush)

cs_timer_stats_set_start_time()

void cs_timer_stats_set_start_time

(

int

time_id

)

Set a start time for time stats.

This is useful to shift the time id for restarts. This function must not be called after cs_timer_stats_increment_time_step.

Parameters

[in]

time_id

associated starting time id

cs_timer_stats_start()

void cs_timer_stats_start

(

int

id

)

Start a timer for a given statistic.

Parents of the current statistic are also started, if not active.

If a timer with the same root but different parents is active, we assume the current operation is a subset of the active timer, so the timer is not started, so as to avoid having a sum of parts larger than the total.

Parameters

[in]

id

id of statistic

cs_timer_stats_stop()

void cs_timer_stats_stop

(

int

id

)

Stop a timer for a given statistic.

Children of the current statistic are also stopped, if active.

Parameters

[in]

id

id of statistic

cs_timer_stats_switch()

int cs_timer_stats_switch

(

int

id

)

Start a timer for a given statistic, stopping previous timers of the same type which are not a parent, and starting inactive parent timers if necessary.

Parameters

[in]

id

id of statistic

Returns

id of previously active statistic, or -1 in case of error

Parameters

[in]

id

id of statistic with same root

Returns

id of previously active statistic, or -1 in case of error