add some code

managed_components/lvgl__lvgl/demos/benchmark/lv_demo_benchmark.h

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+/**
+ * @file lv_demo_benchmark.h
+ *
+ */
+
+#ifndef LV_DEMO_BENCHMARK_H
+#define LV_DEMO_BENCHMARK_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../lv_demos.h"
+
+#if LV_USE_DEMO_BENCHMARK
+
+/*********************
+ *      DEFINES
+ *********************/
+#if LV_DEMO_BENCHMARK_ALIGNED_FONTS
+
+LV_FONT_DECLARE(lv_font_benchmark_montserrat_12_aligned)
+LV_FONT_DECLARE(lv_font_benchmark_montserrat_14_aligned)
+LV_FONT_DECLARE(lv_font_benchmark_montserrat_16_aligned)
+LV_FONT_DECLARE(lv_font_benchmark_montserrat_18_aligned)
+LV_FONT_DECLARE(lv_font_benchmark_montserrat_20_aligned)
+LV_FONT_DECLARE(lv_font_benchmark_montserrat_24_aligned)
+LV_FONT_DECLARE(lv_font_benchmark_montserrat_26_aligned)
+
+#else
+
+/** Make sure that the aligned fonts are not built when not used */
+#define LV_FONT_BENCHMARK_MONTSERRAT_12_ALIGNED 0
+#define LV_FONT_BENCHMARK_MONTSERRAT_14_ALIGNED 0
+#define LV_FONT_BENCHMARK_MONTSERRAT_16_ALIGNED 0
+#define LV_FONT_BENCHMARK_MONTSERRAT_18_ALIGNED 0
+#define LV_FONT_BENCHMARK_MONTSERRAT_20_ALIGNED 0
+#define LV_FONT_BENCHMARK_MONTSERRAT_22_ALIGNED 0
+#define LV_FONT_BENCHMARK_MONTSERRAT_24_ALIGNED 0
+#define LV_FONT_BENCHMARK_MONTSERRAT_26_ALIGNED 0
+
+#endif /*LV_DEMO_BENCHMARK_ALIGNED_FONTS*/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+typedef struct {
+    const char * name;
+    void (*create_cb)(void);
+    uint32_t scene_time;
+    uint32_t cpu_avg_usage;
+    uint32_t fps_avg;
+    uint32_t render_avg_time;
+    uint32_t flush_avg_time;
+    uint32_t measurement_cnt;
+} lv_demo_benchmark_scene_dsc_t;
+
+typedef struct {
+    /*
+     * List of scenes
+     * The last scne in this array of scenes is terminated
+     * by a sentinel scene that has `create_cb` == NULL
+     * Must not be free'd
+     */
+    lv_demo_benchmark_scene_dsc_t * scenes;
+
+    int32_t total_avg_fps;
+    int32_t total_avg_cpu;
+    int32_t total_avg_render_time;
+    int32_t total_avg_flush_time;
+    int32_t valid_scene_cnt; /* Number of scenes in `scenes` with a `measurement_cnt` greater than 0 */
+} lv_demo_benchmark_summary_t;
+
+typedef void (*lv_demo_benchmark_on_end_cb_t)(const lv_demo_benchmark_summary_t *);
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/**
+ * Run all benchmark scenes.
+ *
+ * On the summary end screen the values shall be interpreted according to the following:
+ * - CPU usage:
+ *    - If `LV_SYSMON_GET_IDLE` is not modified it's measured based on the time spent in
+ *      `lv_timer_handler`.
+ *    - If an (RT)OS is used `LV_SYSMON_GET_IDLE` can be changed to a custom function
+ *      which returns the idle percentage of idle task.
+ *
+ * - FPS: LVGL attempted to render this many times in a second. It's limited based on `LV_DEF_REFR_PERIOD`
+ *
+ * - Render time: LVGL spent this much time with rendering only. It's not aware of task yielding,
+ *   but simply the time difference between the start and end of the rendering is measured
+ *
+ * - Flush time: It's the sum of
+ *     - the time spent in the `flush_cb` and
+ *     - the time spent with waiting for flush ready.
+ */
+void lv_demo_benchmark(void);
+
+/*
+ * Register a function to call when the benchmark demo is over
+ * @param cb    function to call when the demo is over
+ */
+void lv_demo_benchmark_set_end_cb(lv_demo_benchmark_on_end_cb_t cb);
+
+
+/*
+ * Display and log the summary
+ * This function is called automatically if `lv_on_benchmark_end_cb` is not set
+ * @param summary   summary of the benchmark results
+ */
+void lv_demo_benchmark_summary_display(const lv_demo_benchmark_summary_t * summary);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#endif /*LV_USE_DEMO_BENCHMARK*/
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /*LV_DEMO_BENCHMARK_H*/