Set cached xkb context/keymap

Summary:
Set xkb context and keymap to Ecore_Drm.
         In enlightenment (used in wayland with drm backend), keymap is used only one.
         So for avoid unnecessary open keymap files, set cached context and keymap.
         But for this, enlightenment must compile keymap before init ecore_drm.
         So I changed booting sequence also.

Test Plan: Distinguish time between before and after during add a keyboard device.

Reviewers: raster, devilhorns, zmike

Subscribers: cedric, input.hacker, ohduna

Differential Revision: https://phab.enlightenment.org/D3504

config/default/e.src

@@ -215,6 +215,7 @@ group "E_Config" struct {
   value "update.later" uchar: 0;
   value "xkb.only_label" int: 0;
   value "xkb.default_model" string: "default";
+  value "xkb.use_cache" uchar: 0;
   value "keyboard.repeat_delay" int: 400;
   value "keyboard.repeat_rate" int: 25;
   value "exe_always_single_instance" uchar: 0;

config/mobile/e.src

@@ -865,6 +865,7 @@ group "E_Config" struct {
     }
     value "xkb.only_label" int: 0;
     value "xkb.default_model" string: "default";
+    value "xkb.use_cache" uchar: 0;
     value "keyboard.repeat_delay" int: 400;
     value "keyboard.repeat_rate" int: 25;
     value "exe_always_single_instance" uchar: 1;

config/standard/e.src

@@ -1106,6 +1106,7 @@ group "E_Config" struct {
     }
     value "xkb.only_label" int: 0;
     value "xkb.default_model" string: "default";
+    value "xkb.use_cache" uchar: 0;
     value "keyboard.repeat_delay" int: 400;
     value "keyboard.repeat_rate" int: 25;
     value "exe_always_single_instance" uchar: 0;

config/tiling/e.src

@@ -1128,6 +1128,7 @@ group "E_Config" struct {
     }
     value "xkb.only_label" int: 0;
     value "xkb.default_model" string: "default";
+    value "xkb.use_cache" uchar: 0;
     value "keyboard.repeat_delay" int: 400;
     value "keyboard.repeat_rate" int: 25;
     value "exe_always_single_instance" uchar: 0;

src/bin/e_comp_wl.c

@@ -2655,7 +2655,7 @@ _e_comp_wl_compositor_create(void)
         if (!layout) layout = strdup("us");
 
         /* update compositor keymap */
-        e_comp_wl_input_keymap_set(rules, model, layout);
+        e_comp_wl_input_keymap_set(rules, model, layout, NULL, NULL);
      }
 #endif
    e_comp_wl->wl.client_disp = ecore_wl2_display_connect(NULL);

src/bin/e_comp_wl_input.c

@@ -2,6 +2,9 @@
 #define E_COMP_WL
 #include "e.h"
 #include <sys/mman.h>
+#ifdef HAVE_WL_DRM
+#include <Ecore_Drm.h>
+#endif
 
 E_API int E_EVENT_TEXT_INPUT_PANEL_VISIBILITY_CHANGE = -1;
 
@@ -586,41 +589,62 @@ e_comp_wl_input_keyboard_enabled_set(Eina_Bool enabled)
 }
 
 E_API void
-e_comp_wl_input_keymap_set(const char *rules, const char *model, const char *layout)
+e_comp_wl_input_keymap_set(const char *rules, const char *model, const char *layout, struct xkb_context *dflt_ctx, struct xkb_keymap *dflt_map)
 {
    struct xkb_keymap *keymap;
    struct xkb_rule_names names;
+   Eina_Bool use_dflt_xkb = EINA_FALSE;
 
    /* DBG("COMP_WL: Keymap Set: %s %s %s", rules, model, layout); */
 
+   if (dflt_ctx && dflt_map) use_dflt_xkb = EINA_TRUE;
+
    /* assemble xkb_rule_names so we can fetch keymap */
-   memset(&names, 0, sizeof(names));
-   if (rules) names.rules = strdup(rules);
-   else names.rules = strdup("evdev");
-   if (model) names.model = strdup(model);
-   else names.model = strdup("pc105");
-   if (layout) names.layout = strdup(layout);
-   else names.layout = strdup("us");
+   if (!use_dflt_xkb)
+     {
+        memset(&names, 0, sizeof(names));
+        if (rules) names.rules = strdup(rules);
+        else names.rules = strdup("evdev");
+        if (model) names.model = strdup(model);
+        else names.model = strdup("pc105");
+        if (layout) names.layout = strdup(layout);
+        else names.layout = strdup("us");
+     }
 
    /* unreference any existing context */
    if (e_comp_wl->xkb.context)
      xkb_context_unref(e_comp_wl->xkb.context);
 
    /* create a new xkb context */
-   e_comp_wl->xkb.context = xkb_context_new(0);
+   if (use_dflt_xkb) e_comp_wl->xkb.context = dflt_ctx;
+   else e_comp_wl->xkb.context = xkb_context_new(0);
+
+#ifdef HAVE_WL_DRM
+   if (e_config->xkb.use_cache)
+     ecore_drm_device_keyboard_cached_context_set(e_comp_wl->xkb.context);
+#endif
 
    /* fetch new keymap based on names */
-   keymap = xkb_map_new_from_names(e_comp_wl->xkb.context, &names, 0);
+   if (use_dflt_xkb) keymap = dflt_map;
+   else keymap = xkb_map_new_from_names(e_comp_wl->xkb.context, &names, 0);
    if (keymap)
      {
         /* update compositor keymap */
         _e_comp_wl_input_keymap_update(keymap);
      }
 
+#ifdef HAVE_WL_DRM
+   if (e_config->xkb.use_cache)
+     ecore_drm_device_keyboard_cached_keymap_set(keymap);
+#endif
+
    /* cleanup */
-   free((char *)names.rules);
-   free((char *)names.model);
-   free((char *)names.layout);
+   if (!use_dflt_xkb)
+     {
+        free((char *)names.rules);
+        free((char *)names.model);
+        free((char *)names.layout);
+     }
 }
 
 E_API void

src/bin/e_comp_wl_input.h

@@ -29,7 +29,8 @@ E_API void e_comp_wl_input_pointer_enabled_set(Eina_Bool enabled);
 E_API void e_comp_wl_input_keyboard_enabled_set(Eina_Bool enabled);
 E_API void e_comp_wl_input_touch_enabled_set(Eina_Bool enabled);
 
-E_API void e_comp_wl_input_keymap_set(const char *rules, const char *model, const char *layout);
+E_API void e_comp_wl_input_keymap_set(const char *rules, const char *model, const char *layout,
+                                      struct xkb_context *dflt_ctx, struct xkb_keymap *dflt_map);
 
 # endif
 #endif

src/bin/e_config.c

@@ -752,6 +752,7 @@ _e_config_edd_init(Eina_Bool old)
    E_CONFIG_VAL(D, T, xkb.only_label, INT);
    E_CONFIG_VAL(D, T, xkb.dont_touch_my_damn_keyboard, UCHAR);
    E_CONFIG_VAL(D, T, xkb.default_model, STR);
+   E_CONFIG_VAL(D, T, xkb.use_cache, UCHAR);
 
    E_CONFIG_VAL(D, T, keyboard.repeat_delay, INT);
    E_CONFIG_VAL(D, T, keyboard.repeat_rate, INT);

src/bin/e_config.h

@@ -428,6 +428,7 @@ struct _E_Config
       const char *cur_layout; // whatever the current layout is
       const char *selected_layout; // whatever teh current layout that the user has selected is
       const char *desklock_layout;
+      Eina_Bool use_cache;
    } xkb;
 
    struct

src/modules/wl_drm/e_mod_main.c

@@ -668,10 +668,32 @@ _drm_read_pixels(E_Comp_Wl_Output *output, void *pixels)
      }
 }
 
+static void
+_e_mod_drm_keymap_set(struct xkb_context *ctx, struct xkb_keymap *map)
+{
+   struct xkb_rule_names names;
+
+   ctx = xkb_context_new(0);
+   EINA_SAFETY_ON_NULL_RETURN(ctx);
+
+   memset(&names, 0, sizeof(names));
+   names.rules = strdup("evdev");
+   names.model = strdup("pc105");
+   names.layout = strdup("us");
+
+   map = xkb_map_new_from_names(ctx, &names, 0);
+   EINA_SAFETY_ON_NULL_RETURN(map);
+
+   ecore_drm_device_keyboard_cached_context_set(ctx);
+   ecore_drm_device_keyboard_cached_keymap_set(map);
+}
+
 E_API void *
 e_modapi_init(E_Module *m)
 {
    int w = 0, h = 0;
+   struct xkb_context *ctx = NULL;
+   struct xkb_keymap *map = NULL;
 
    printf("LOAD WL_DRM MODULE\n");
 
@@ -682,6 +704,8 @@ e_modapi_init(E_Module *m)
    /*      return NULL; */
    /*   } */
 
+   _e_mod_drm_keymap_set(ctx, map);
+
    if (e_comp_config_get()->engine == E_COMP_ENGINE_GL)
      {
         e_comp->ee = ecore_evas_new("gl_drm", 0, 0, 1, 1, NULL);
@@ -743,7 +767,7 @@ e_modapi_init(E_Module *m)
 
    /* FIXME: This is just for testing at the moment....
     * happens to jive with what drm does */
-   e_comp_wl_input_keymap_set(NULL, NULL, NULL);
+   e_comp_wl_input_keymap_set(NULL, NULL, NULL, ctx, map);
 
    activate_handler =
       ecore_event_handler_add(ECORE_DRM_EVENT_ACTIVATE,

src/modules/wl_wl/e_mod_main.c

@@ -58,7 +58,7 @@ e_modapi_init(E_Module *m)
    e_comp->pointer = e_pointer_canvas_new(e_comp->ee, EINA_TRUE);
    e_comp->pointer->color = EINA_TRUE;
 
-   e_comp_wl_input_keymap_set(NULL, NULL, NULL);
+   e_comp_wl_input_keymap_set(NULL, NULL, NULL, NULL, NULL);
    wl_wl_init();
 
    return m;

src/modules/wl_x11/e_mod_main.c

@@ -50,7 +50,7 @@ _cb_keymap_changed(void *data EINA_UNUSED, int type EINA_UNUSED, void *event EIN
    if (!layout) layout = strdup("us");
 
    /* update compositor keymap */
-   e_comp_wl_input_keymap_set(rules, model, layout);
+   e_comp_wl_input_keymap_set(rules, model, layout, NULL, NULL);
 
    free(rules);
    free(model);