add code to handle different output formats

The goals of this patch are
1) to support different report formats (e.g., text, csv, gnuplot
   commands),
2) to support different report modes (e.g., single run stats,
   histograms, comparison), and
3) without cluttering the main program code with vast amounts of
   conditional output code in primary processing loop.

This patch implements report output via an "report operations
structure" (struct output_ops) pointed to from options structure.
Clutter in main source file has been reduced by moving the default
report generation functions to separate report format specific source
file and utils.c.

Signed-off-by: Koan-Sin Tan <freedom.tan@linaro.org>
Signed-off-by: Tuukka Tikkanen <tuukka.tikkanen@linaro.org>

1 files changed, 27 insertions, 0 deletions

diff --git a/idlestat.h b/idlestat.h
index bd1d705..c9a01a1 100644
--- a/idlestat.h
+++ b/idlestat.h
@@ -131,6 +131,8 @@ struct program_options {
 	char *outfilename;
 	int verbose;
 	char *energy_model_filename;
+	struct report_ops *report_ops;
+	void *report_data;
 };
 
 #define IDLE_DISPLAY      0x1
@@ -179,4 +181,29 @@ struct init_pstates {
 	unsigned int *freqs;
 };
 
+struct report_ops {
+	int (*check_output)(struct program_options *, void *);
+
+	int (*open_report_file)(char *path, void *);
+	int (*close_report_file)(void *);
+
+	void (*cstate_table_header)(void *);
+	void (*cstate_table_footer)(void *);
+	void (*cstate_cpu_header)(const char *cpu, void *);
+	void (*cstate_single_state)(struct cpuidle_cstate*, void *);
+	void (*cstate_end_cpu)(void *);
+
+	void (*pstate_table_header)(void *);
+	void (*pstate_table_footer)(void *);
+	void (*pstate_cpu_header)(const char *cpu, void *);
+	void (*pstate_single_state)(struct cpufreq_pstate*, void *);
+	void (*pstate_end_cpu)(void*);
+
+	void (*wakeup_table_header)(void *);
+	void (*wakeup_table_footer)(void *);
+	void (*wakeup_cpu_header)(const char *cpu, void *);
+	void (*wakeup_single_state)(struct wakeup_irq *irqinfo, void *);
+	void (*wakeup_end_cpu)(void *);
+};
+
 #endif