Reduce memory footprint

src/launcher/icon-theme-common.c

@@ -536,6 +536,9 @@ char *get_icon_path_helper(GSList *themes, const char *icon_name, int size)
 	char *next_larger = NULL;
 	GSList *next_larger_theme = NULL;
 
+	int file_name_size = 4096;
+	char *file_name = calloc(file_name_size, 1);
+
 	for (theme = themes; theme; theme = g_slist_next(theme)) {
 		((IconTheme*)theme->data)->list_directories = g_slist_sort_with_data(((IconTheme*)theme->data)->list_directories,
 																			 compare_theme_directories,
@@ -560,8 +563,13 @@ char *get_icon_path_helper(GSList *themes, const char *icon_name, int size)
 					char *theme_name = ((IconTheme*)theme->data)->name;
 					char *dir_name = ((IconThemeDir*)dir->data)->name;
 					char *extension = (char*) ext->data;
-					char *file_name = calloc(strlen(base_name) + strlen(theme_name) +
+					if (strlen(base_name) + strlen(theme_name) +
-											 strlen(dir_name) + strlen(icon_name) + strlen(extension) + 100, 1);
+						strlen(dir_name) + strlen(icon_name) + strlen(extension) + 100 > file_name_size) {
+						file_name_size = strlen(base_name) + strlen(theme_name) +
+										 strlen(dir_name) + strlen(icon_name) + strlen(extension) + 100;
+						file_name = realloc(file_name, file_name_size);
+					}
+					file_name[0] = 0;
 					// filename = directory/$(themename)/subdirectory/iconname.extension
 					sprintf(file_name, "%s/%s/%s/%s%s", base_name, theme_name, dir_name, icon_name, extension);
 					if (DEBUG_ICON_SEARCH)
@@ -596,11 +604,12 @@ char *get_icon_path_helper(GSList *themes, const char *icon_name, int size)
 								printf("next_larger = %s; next_larger_size = %d\n", next_larger, next_larger_size);
 						}
 					}
+				}
+			}
+		}
+	}
 	free(file_name);
-				}
+	file_name = NULL;
-			}
-		}
-	}
 	if (next_larger) {
 		g_slist_free(extensions);
 		free(best_file_name);

src/launcher/launcher.c

@@ -31,6 +31,8 @@
 #include <glib.h>
 #include <glib/gstdio.h>
 #include <gdk-pixbuf/gdk-pixbuf.h>
+#include <sys/types.h>
+#include <sys/wait.h>
 
 #ifdef HAVE_RSVG
 #include <librsvg/rsvg.h>
@@ -150,8 +152,7 @@ void cleanup_launcher_theme(Launcher *launcher)
 	for (l = launcher->list_icons; l ; l = l->next) {
 		LauncherIcon *launcherIcon = (LauncherIcon*)l->data;
 		if (launcherIcon) {
-			free_icon(launcherIcon->icon_scaled);
+			free_icon(launcherIcon->image);
-			free_icon(launcherIcon->icon_original);
 			free(launcherIcon->icon_name);
 			free(launcherIcon->icon_path);
 			free(launcherIcon->cmd);
@@ -186,7 +187,7 @@ int resize_launcher(void *obj)
 	// Resize icons if necessary
 	for (l = launcher->list_icons; l ; l = l->next) {
 		LauncherIcon *launcherIcon = (LauncherIcon *)l->data;
-		if (launcherIcon->icon_size != icon_size || !launcherIcon->icon_original) {
+		if (launcherIcon->icon_size != icon_size || !launcherIcon->image) {
 			launcherIcon->icon_size = icon_size;
 			launcherIcon->area.width = launcherIcon->icon_size;
 			launcherIcon->area.height = launcherIcon->icon_size;
@@ -195,72 +196,72 @@ int resize_launcher(void *obj)
 			char *new_icon_path = get_icon_path(launcher->list_themes, launcherIcon->icon_name, launcherIcon->icon_size);
 			if (!new_icon_path) {
 				// Draw a blank icon
-				free_icon(launcherIcon->icon_original);
+				free_icon(launcherIcon->image);
-				launcherIcon->icon_original = NULL;
+				launcherIcon->image = NULL;
-				free_icon(launcherIcon->icon_scaled);
-				launcherIcon->icon_scaled = NULL;
 				continue;
 			}
-			if (launcherIcon->icon_path && strcmp(new_icon_path, launcherIcon->icon_path) == 0) {
+
-				// If it's the same file just rescale
-				free_icon(launcherIcon->icon_scaled);
-				launcherIcon->icon_scaled = scale_icon(launcherIcon->icon_original, icon_size);
-				free(new_icon_path);
-				fprintf(stderr, "launcher.c %d: Using icon %s\n", __LINE__, launcherIcon->icon_path);
-			} else {
 			// Free the old files
-				free_icon(launcherIcon->icon_original);
+			free_icon(launcherIcon->image);
-				free_icon(launcherIcon->icon_scaled);
+			launcherIcon->image = NULL;
-				launcherIcon->icon_original = launcherIcon->icon_scaled = NULL;
 			// Load the new file and scale
-				launcherIcon->icon_original = imlib_load_image_immediately(new_icon_path);
+			launcherIcon->image = imlib_load_image_immediately(new_icon_path);
 #ifdef HAVE_RSVG
-				if (!launcherIcon->icon_original && g_str_has_suffix(new_icon_path, ".svg")) {
+			if (!launcherIcon->image && g_str_has_suffix(new_icon_path, ".svg")) {
+				char suffix[128];
+				sprintf(suffix, "tmpicon-%d.png", getpid());
+				// We fork here because librsvg allocates memory like crazy
+				pid_t pid = fork();
+				if (pid == 0) {
+					// Child
 					GError* err = NULL;
 					RsvgHandle* svg = rsvg_handle_new_from_file(new_icon_path, &err);
 
 					if (err != NULL) {
 						fprintf(stderr, "Could not load svg image!: %s", err->message);
 						g_error_free(err);
-						launcherIcon->icon_original = NULL;
+						launcherIcon->image = NULL;
 					} else {
-						char suffix[128];
-						sprintf(suffix, "tmpicon-%d.png", getpid());
 						gchar *name = g_build_filename(g_get_user_config_dir(), "tint2", suffix, NULL);
 						GdkPixbuf *pixbuf = rsvg_handle_get_pixbuf(svg);
 						gdk_pixbuf_save(pixbuf, name, "png", NULL, NULL);
-						launcherIcon->icon_original = imlib_load_image_immediately_without_cache(name);
+					}
+					exit(0);
+				} else {
+					// Parent
+					waitpid(pid, 0, 0);
+					gchar *name = g_build_filename(g_get_user_config_dir(), "tint2", suffix, NULL);
+					launcherIcon->image = imlib_load_image_immediately_without_cache(name);
 					g_remove(name);
 					g_free(name);
-						g_object_unref(G_OBJECT(pixbuf));
-						g_object_unref(G_OBJECT(svg));
 				}
 			} else
 #endif
 			{
-					launcherIcon->icon_original = imlib_load_image_immediately(new_icon_path);
+				launcherIcon->image = imlib_load_image_immediately(new_icon_path);
 			}
 			// On loading error, fallback to default
-				if (!launcherIcon->icon_original) {
+			if (!launcherIcon->image) {
 				free(new_icon_path);
 				new_icon_path = get_icon_path(launcher->list_themes, DEFAULT_ICON, launcherIcon->icon_size);
 				if (new_icon_path)
-						launcherIcon->icon_original = imlib_load_image_immediately(new_icon_path);
+					launcherIcon->image = imlib_load_image_immediately(new_icon_path);
 			}
 
-				if (!launcherIcon->icon_original) {
+			if (!launcherIcon->image) {
 				// Loading default icon failed, draw a blank icon
 				free(new_icon_path);
 			} else {
 				// Loaded icon successfully
-					launcherIcon->icon_scaled = scale_icon(launcherIcon->icon_original, launcherIcon->icon_size);
+				Imlib_Image original = launcherIcon->image;
+				launcherIcon->image = scale_icon(launcherIcon->image, launcherIcon->icon_size);
+				free_icon(original);
 				free(launcherIcon->icon_path);
 				launcherIcon->icon_path = new_icon_path;
 				fprintf(stderr, "launcher.c %d: Using icon %s\n", __LINE__, launcherIcon->icon_path);
 			}
 		}
 	}
-	}
 	
 	count = g_slist_length(launcher->list_icons);
 
@@ -331,6 +332,7 @@ int resize_launcher(void *obj)
 			}
 		}
 	}
+
 	return 1;
 }
 
@@ -355,9 +357,8 @@ void draw_launcher_icon(void *obj, cairo_t *c)
 {
 	LauncherIcon *launcherIcon = (LauncherIcon*)obj;
 
-	Imlib_Image icon_scaled = launcherIcon->icon_scaled;
 	// Render
-	imlib_context_set_image(icon_scaled);
+	imlib_context_set_image(launcherIcon->image);
 	if (server.real_transparency) {
 		render_image(launcherIcon->area.pix, 0, 0);
 	} else {

src/launcher/launcher.h

@@ -23,8 +23,7 @@ typedef struct Launcher {
 typedef struct LauncherIcon {
 	// always start with area
 	Area area;
-	Imlib_Image icon_scaled;
+	Imlib_Image image;
-	Imlib_Image icon_original;
 	char *cmd;
 	char *icon_name;
 	char *icon_path;