From f52f44e7a2b4368c3b1dc794479ff3116947ae98 Mon Sep 17 00:00:00 2001
From: Leandro Pereira <leandro@profusion.mobi>
Date: Thu, 17 Jan 2013 14:31:34 +0000
Subject: [PATCH] evas_render: Measure time spent while rendering in sync  and
 async modes

SVN revision: 82936
---
 src/lib/evas/canvas/evas_render.c               | 64 +++++++++++++++++++++++++
 src/modules/ecore_evas/engines/x/ecore_evas_x.c |  6 ++-
 2 files changed, 69 insertions(+), 1 deletion(-)

diff --git a/src/lib/evas/canvas/evas_render.c b/src/lib/evas/canvas/evas_render.c
index 7531090..649a32c 100644
--- a/src/lib/evas/canvas/evas_render.c
+++ b/src/lib/evas/canvas/evas_render.c
@@ -5,6 +5,10 @@
 #include "evas_cs2_private.h"
 #endif
 
+#ifdef EVAS_RENDER_DEBUG_TIMING
+#include <sys/time.h>
+#endif
+
 /* debug rendering
  * NOTE: Define REND_DBG 1 in evas_private.h to enable debugging. Don't define
  * it here since the flag is used on other places too. */
@@ -59,6 +63,59 @@ struct _Render_Updates
 static Eina_Bool
 evas_render_updates_internal(Evas *eo_e, unsigned char make_updates, unsigned char do_draw, Evas_Render_Done_Cb done_func, void *done_data, Evas_Event_Cb updates_func, void *updates_data, Eina_Bool do_async);
 
+#ifdef EVAS_RENDER_DEBUG_TIMING
+static double
+_time_get()
+{
+   struct timeval tv;
+
+   gettimeofday(&tv, NULL);
+
+   return (tv.tv_sec + tv.tv_usec / 1000000.0) * 1000.0;
+}
+
+struct accumulator {
+   double total, min, max;
+   int samples;
+   const char *what;
+};
+
+static struct accumulator async_accumulator = {
+   .total = 0,
+   .min = 1000000,
+   .max = 0,
+   .samples = 0,
+   .what = "async render"
+};
+static struct accumulator sync_accumulator = {
+   .total = 0,
+   .min = 1000000,
+   .max = 0,
+   .samples = 0,
+   .what = "sync render"
+};
+
+static void
+_accumulate_time(double before, struct accumulator *acc)
+{
+   double diff = _time_get() - before;
+
+   acc->total += diff;
+   if (diff > acc->max) acc->max = diff;
+   if (diff < acc->min) acc->min = diff;
+
+   acc->samples++;
+   if (acc->samples % 100 == 0)
+     {
+        fprintf(stderr, "*** %s: avg %fms min %fms max %fms\n",
+                acc->what, acc->total / 100.0, acc->min, acc->max);
+        acc->total = 0.0;
+        acc->max = 0.0;
+        acc->min = 1000000;
+     }
+}
+#endif
+
 EAPI void
 evas_damage_rectangle_add(Evas *eo_e, int x, int y, int w, int h)
 {
@@ -1361,6 +1418,9 @@ evas_render_updates_internal(Evas *eo_e,
    int redraw_all = 0;
    Eina_Bool haveup = 0;
    Evas_Render_Mode render_mode = EVAS_RENDER_MODE_UNDEF;
+#ifdef EVAS_RENDER_DEBUG_TIMING
+   double start_time = _time_get();
+#endif
 
    MAGIC_CHECK(eo_e, Evas, MAGIC_EVAS);
    return EINA_FALSE;
@@ -1852,6 +1912,10 @@ evas_render_updates_internal(Evas *eo_e,
 
    RD("---]\n");
 
+#ifdef EVAS_RENDER_DEBUG_TIMING
+   _accumulate_time(start_time, do_async ? &async_accumulator : &sync_accumulator);
+#endif
+
    return EINA_TRUE;
 }
 
diff --git a/src/modules/ecore_evas/engines/x/ecore_evas_x.c b/src/modules/ecore_evas/engines/x/ecore_evas_x.c
index dba60a7..b23d4e8 100644
--- a/src/modules/ecore_evas/engines/x/ecore_evas_x.c
+++ b/src/modules/ecore_evas/engines/x/ecore_evas_x.c
@@ -3178,7 +3178,11 @@ ecore_evas_software_x11_new_internal(const char *disp_name, Ecore_X_Window paren
    ee->prop.request_pos = 0;
    ee->prop.sticky = 0;
    edata->state.sticky = 0;
-   ee->can_async_render = 1;
+
+   if (getenv("ECORE_EVAS_FORCE_SYNC_RENDER"))
+     ee->can_async_render = 0;
+   else
+     ee->can_async_render = 1;
 
    /* init evas here */
    ee->evas = evas_new();
-- 
2.7.4