trace-graph.h

#ifndef _TRACE_GRAPH_H
#define _TRACE_GRAPH_H

#include <gtk/gtk.h>
#include "trace-cmd.h"
#include "trace-hash.h"

struct graph_info;

typedef void (graph_select_cb)(struct graph_info *ginfo, guint64 time);
typedef void (graph_filter_cb)(struct graph_info *ginfo,
			       struct filter_task *task_filter,
			       struct filter_task *hide_tasks);

struct graph_plot;

/*
 * match_time:
 *   Return true if a selected time should expose plot.
 *   Should only return true if an event has the exact time that
 *   is passed in.
 */
struct plot_callbacks {
	int (*match_time)(struct graph_info *, struct graph_plot *,
			  unsigned long long time);
};

struct graph_plot {
	struct graph_plot		*next;
	char				*label;
	const struct plot_callbacks	*cb;
	void				*private;
};

struct graph_callbacks {
	graph_select_cb		*select;
	graph_filter_cb		*filter;
};

struct graph_info {
	struct tracecmd_input	*handle;
	struct pevent		*pevent;
	gint			cpus;

	gint			plots;
	struct graph_plot	**plot_array;
	struct graph_plot	*plot_list;

	GtkWidget		*widget;	/* Box to hold graph */
	GtkWidget		*scrollwin;	/* graph scroll window */
	GtkWidget		*info_scrollwin; /* graph scroll window (for info widget) */
	GtkWidget		*info;		/* info window */
	GtkWidget		*draw;
	GdkPixmap		*curr_pixmap;	/* pixmap backstore */
	GdkPixmap		*info_pixmap;	/* pixmap backstore */
	GtkAdjustment		*hadj;		/* scrollwindow horizontal adjust */
	guint64			start_time;	/* True start time of trace */
	guint64			end_time;	/* True end time of trace */
	guint64			view_start_time; /* visible start time */
	guint64			view_end_time;	/* visible end time */
	gint			start_x;	/* virutal start of visible area */

	guint64			cursor;		/* time of cursor (double clicked) */

	gdouble			resolution;	/* pixels / time */

	gint			press_x;	/* x where button is pressed */
	gint			last_x;		/* last x seen while moving mouse */
	gboolean		line_active;	/* set when button is pressed */

	gdouble			hadj_value;	/* value to set hadj width */
	gdouble			hadj_page_size;	/* visible size to set hadj */

	gint			draw_width;	/* width of pixmap */
	gint			draw_height;	/* height of pixmap */
	gint			full_width;	/* width of full trace in pixels */
						/* This includes non visible part of trace */

	struct graph_callbacks	*callbacks;	/* call back hooks for changes to graph */

	gboolean		filter_enabled;
	gboolean		filter_available;

	gboolean		all_events;	/* all events enabled */
	gchar			**systems;	/* event systems to filter on */
	gint			*event_ids;	/* events to filter on */
	gint			systems_size;
	gint			event_ids_size;

	/* cache of event fields */
	gint			ftrace_sched_switch_id;
	gint			event_sched_switch_id;
	gint			event_wakeup_id;
	gint			event_wakeup_new_id;
	struct format_field	*event_pid_field;
	struct format_field	*event_comm_field;
	struct format_field	*ftrace_pid_field;
	struct format_field	*ftrace_comm_field;
	struct format_field	*wakeup_pid_field;
	struct format_field	*wakeup_success_field;
	struct format_field	*wakeup_new_pid_field;
	struct format_field	*wakeup_new_success_field;

	gboolean		read_comms;	/* Read all comms on first load */

	struct filter_task	*task_filter;
	gint			filter_task_selected;

	struct filter_task	*hide_tasks;

	/* Box info for CPU data info window */
	gint			cpu_data_x;
	gint			cpu_data_y;
	gint			cpu_data_w;
	gint			cpu_data_h;

	gint			cpu_x;		/* x coord where CPU numbers are drawn */
};


struct graph_info *
trace_graph_create(struct tracecmd_input *handle);
struct graph_info *
trace_graph_create_with_callbacks(struct tracecmd_input *handle,
				  struct graph_callbacks *cbs);
void trace_graph_select_by_time(struct graph_info *ginfo, guint64 time);

void trace_graph_event_filter_callback(gboolean accept,
				       gboolean all_events,
				       gchar **systems,
				       gint *events,
				       gpointer data);

static inline GtkWidget *trace_graph_get_draw(struct graph_info *ginfo)
{
	return ginfo->draw;
}

static inline struct graph_callbacks *trace_graph_get_callbacks(struct graph_info *ginfo)
{
	return ginfo->callbacks;
}

static inline GtkWidget *trace_graph_get_window(struct graph_info *ginfo)
{
	return ginfo->widget;
}

struct filter_task_item *
trace_graph_filter_task_find_pid(struct graph_info *ginfo, gint pid);
struct filter_task_item *
trace_graph_hide_task_find_pid(struct graph_info *ginfo, gint pid);
void trace_graph_filter_toggle(struct graph_info *ginfo);
void trace_graph_filter_add_remove_task(struct graph_info *info,
					gint pid);
void trace_graph_filter_hide_show_task(struct graph_info *ginfo,
				       gint pid);
void trace_graph_clear_tasks(struct graph_info *ginfo);
void trace_graph_free_info(struct graph_info *ginfo);
int trace_graph_load_handle(struct graph_info *ginfo,
			    struct tracecmd_input *handle);

/* plots */
void trace_graph_plot_free(struct graph_info *ginfo);
void trace_graph_plot_init(struct graph_info *ginfo);
void trace_graph_plot_append(struct graph_info *ginfo,
			     const char *label, const struct plot_callbacks *cb,
			     void *data);

int trace_graph_plot_match_time(struct graph_info *ginfo,
				struct graph_plot *plot,
				unsigned long long time);


/* cpu plot */
void graph_plot_init_cpus(struct graph_info *ginfo, int cpus);

#endif /* _TRACE_GRAPH_H */