fixed images_clear ordering

dir.c

@@ -320,19 +320,8 @@ void update_selected_file(){
 	if (selected_file_current != selected_file_last) {
 		mid_content[selected_file_last].status &= ~FILE_STATUS_HOVER;
 	}
-	selected_file_last = selected_file_current;
-
-	free(file_current->file_name);
-	file_current->file_name = malloc(strlen(mid_content[selected_file_current].file_name)+1);
-	strcpy(file_current->file_name, mid_content[selected_file_current].file_name);
-	file_current->file_name[strlen(mid_content[selected_file_current].file_name)] = '\0';
-	file_current->file_size = mid_content[selected_file_current].file_size;
-	file_current->file_type = mid_content[selected_file_current].file_type;
-	file_current->color_pair = mid_content[selected_file_current].color_pair;
-	file_current->permissions = mid_content[selected_file_current].permissions;
-
 	mid_content[selected_file_current].status |= FILE_STATUS_HOVER;
-	file_current->status = mid_content[selected_file_current].status;
+	selected_file_last = selected_file_current;
 }
 void dir_set_selected_file_current(unsigned long selected_file_current){
 	current_dir->selected_file_current = selected_file_current;

file_previews.c

@@ -43,18 +43,16 @@ char* preview_file(char *file_name, unsigned long file_size){
 
 
 	char *mime = get_mimetype(file_name);
+	images_clear();
 
 	if (strstr(mime, "text")) {
 		file_buffer = text(file_name, &file_size);
-	} else {
+	} else if (strstr(mime, "image")) {
 		file_buffer = generic(file_name);
-	}
-
-	if (strstr(mime, "image")) {
 		images_print(file_name);
 		previewd = 1;
-	} else {
-		images_clear();
+	} else  {
+		file_buffer = generic(file_name);
 	}
 
 	free(mime);
@@ -63,10 +61,14 @@ char* preview_file(char *file_name, unsigned long file_size){
 }
 char* text(char *path, unsigned long *file_size){
 
-	char *file_buffer = malloc(*file_size + 1);
+	unsigned long size = (terminal_width/2) * terminal_height;
+	if (size > *file_size) {
+		size = *file_size;
+	}
+	char *file_buffer = malloc(size + 1);
 	FILE *fp = fopen(path, "r");
-	if (fread(file_buffer, *file_size, 1, fp) != 0) {
-		file_buffer[*file_size] = '\0';
+	if (fread(file_buffer, size, 1, fp) != 0) {
+		file_buffer[size] = '\0';
 		return file_buffer;
 	} else {
 		return "failed reading file";

interactions.c

@@ -20,7 +20,6 @@ extern pthread_mutex_t mutex_mid;
 extern file *mid_content;
 extern file *lft_content;
 extern file *rgt_content;
-extern volatile file *file_current;
 
 extern unsigned int terminal_height;
 extern unsigned int terminal_width;
@@ -143,14 +142,18 @@ int read_string(WINDOW *win, int y, int x, char *str){
 		if (ch == '\n') {
 			err = 0;
 			break;
-		} else if (ch == 27) { /* esc key */
-			err = 1;
-			break;
+		} else if (ch == '\t') { /* tab */
+			memcpy(str + pass, mid_content[selected_file_current].file_name, strlen(mid_content[selected_file_current].file_name));
+			mvwaddstr(win, y, x +pass, mid_content[selected_file_current].file_name);
+			pass += strlen(mid_content[selected_file_current].file_name);
 		} else if (ch == 127) { /* backspace */
 			if (pass > 0) {
 				pass--;
 				mvwdelch(win, y, pass);
 			}
+		} else if (ch == 27) { /* esc key */
+			err = 1;
+			break;
 		} else {
 			mvwaddch(win, y, x +pass, ch);
 			str[pass] = ch;
@@ -184,7 +187,6 @@ void toggle_selection(){
 	pthread_mutex_lock(&mutex_selection);
 	pthread_mutex_lock(&mutex_mid);
 	mid_content[selected_file_current].status ^= FILE_STATUS_SELECTED;
-	file_current->status ^= FILE_STATUS_SELECTED;
 	status |= (STATUS_UPDATE_SCREEN_MASK);
 	pthread_mutex_unlock(&mutex_mid);
 	pthread_mutex_unlock(&mutex_selection);
@@ -235,8 +237,8 @@ void move_left(int passes){
 	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY);
 }
 void move_right(){
-	if (file_current->file_type == FILE_TYPE_DIR || file_current->file_type == FILE_TYPE_SYMLINK) {
-		if (chdir(file_current->file_name) != 0) {
+	if (mid_content[selected_file_current].file_type == FILE_TYPE_DIR || mid_content[selected_file_current].file_type == FILE_TYPE_SYMLINK) {
+		if (chdir(mid_content[selected_file_current].file_name) != 0) {
 			FAIL("move_right", "unhandled error of chdir");
 		} else {
 			selected_file_current = dir_get_selected_file_current();
@@ -244,12 +246,12 @@ void move_right(){
 	} else {
 		unsigned long i = 0;
 		char match = 0;
-		char *mime = get_mimetype(file_current->file_name);
-		char *extension = strrchr(file_current->file_name, '.');
+		char *mime = get_mimetype(mid_content[selected_file_current].file_name);
+		char *extension = strrchr(mid_content[selected_file_current].file_name, '.');
 		for (i = 0; i < file_extension_default_count; i++) {
 			if (strstr(extension, file_extension_default_cmd[i].file_extension)) {
 				char *cmd = concat(file_extension_default_cmd[i].command, " ./\"");
-				cmd = concat(cmd, file_current->file_name);
+				cmd = concat(cmd, mid_content[selected_file_current].file_name);
 				cmd = concat(cmd, "\"");
 
 
@@ -267,7 +269,7 @@ void move_right(){
 				if (strstr(mime, mimetype_default_cmd[i].mimetype)) {
 
 					char *cmd = concat(mimetype_default_cmd[i].command, " ./\"");
-					cmd = concat(cmd, file_current->file_name);
+					cmd = concat(cmd, mid_content[selected_file_current].file_name);
 					cmd = concat(cmd, "\"");
 					btm_buffer = malloc(strlen(cmd));
 				
@@ -311,7 +313,7 @@ void jump_top(){
 }
 
 void open_with(){
-	btm_buffer = concat("open \"", file_current->file_name);
+	btm_buffer = concat("open \"", mid_content[selected_file_current].file_name);
 	btm_buffer = concat(btm_buffer, "\" with:");
 
 	status |= STATUS_UPDATE_SCREEN_0;
@@ -332,7 +334,7 @@ void open_with(){
 	
 	if (!err) {
 		char *cmd = concat(str, " ./\"");
-		cmd = concat(cmd, file_current->file_name);
+		cmd = concat(cmd, mid_content[selected_file_current].file_name);
 		cmd = concat(cmd, "\"");
 
 		if (system(cmd) == -1) {
@@ -351,7 +353,7 @@ void open_with(){
 
 void rename_hovered(){
 
-	btm_buffer = concat("rename \"", file_current->file_name);
+	btm_buffer = concat("rename \"", mid_content[selected_file_current].file_name);
 	btm_buffer = concat(btm_buffer, "\" to:");
 
 	status |= STATUS_UPDATE_SCREEN_0;
@@ -371,7 +373,7 @@ void rename_hovered(){
 
 	
 	if (!err) {
-		char *cmd = concat("mv ./\"", file_current->file_name);
+		char *cmd = concat("mv ./\"", mid_content[selected_file_current].file_name);
 		cmd = concat(cmd, "\" ./\"");
 		cmd = concat(cmd, str);
 		cmd = concat(cmd, "\"");
@@ -405,7 +407,7 @@ void delete(){
 	if (hits) {
 		btm_buffer = concat("delete:", file_str);
 	} else {
-		btm_buffer = concat("delete: \"", file_current->file_name);
+		btm_buffer = concat("delete: \"", mid_content[selected_file_current].file_name);
 		btm_buffer = concat(btm_buffer, "\"");
 	}
 
@@ -444,13 +446,13 @@ void delete(){
 			btm_buffer = concat("deleted: ", file_str);
 		} else {
 			free(btm_buffer);
-			error = remove(file_current->file_name);
+			error = remove(mid_content[selected_file_current].file_name);
 			if (error != 0) {
 				mvaddstr(terminal_height-2, 0, "could not delete: " );
 				mvaddstr(terminal_height-2, strlen("could not delete: "), mid_content[i].file_name);
 				btm_buffer = " ";
 			} else {
-				btm_buffer = concat("deleted: \"", file_current->file_name);
+				btm_buffer = concat("deleted: \"", mid_content[selected_file_current].file_name);
 				btm_buffer = concat(btm_buffer, "\"");
 			} 
 
@@ -621,7 +623,7 @@ void cmd_on_selected(int passes, int index){
 		btm_buffer = concat(key_binding[index].black_magic, file_str);
 	} else {
 		btm_buffer = concat(key_binding[index].black_magic, "\"");
-		btm_buffer = concat(btm_buffer, file_current->file_name);
+		btm_buffer = concat(btm_buffer, mid_content[selected_file_current].file_name);
 		btm_buffer = concat(btm_buffer, "\"");
 	}
 
@@ -663,7 +665,7 @@ void cmd_on_selected(int passes, int index){
 			free(btm_buffer);
 			free(cmd);
 			cmd = concat((char*)key_binding[index].black_magic, " \"");
-			cmd = concat(cmd, file_current->file_name);
+			cmd = concat(cmd, mid_content[selected_file_current].file_name);
 			cmd = concat(cmd, "\"");
 			if (system(cmd) != 0) {
 				/*do nothing*/
@@ -782,8 +784,10 @@ void search(){
 		ch = wgetch(win_b);
 		if (ch == '\n') {
 			break;
-		} else if (ch == 27) { /* esc key */
-			break;
+		} else if (ch == '\t') { /* tab */
+			memcpy(search_buffer, mid_content[selected_file_current].file_name, strlen(mid_content[selected_file_current].file_name));
+			mvwaddstr(win_b, local_height-1, pass, mid_content[selected_file_current].file_name);
+			pass = strlen(mid_content[selected_file_current].file_name);
 		} else if (ch == 127) { /* backspace */
 			mvwdelch(win_b, local_height-1, 1);
 			wdelch(win_b);
@@ -791,6 +795,8 @@ void search(){
 				search_buffer[pass-1] = '\0';
 				pass--;
 			}
+		} else if (ch == 27) { /* esc key */
+			break;
 		} else {
 			search_buffer[pass] = ch;
 			pass++;
@@ -811,6 +817,8 @@ void search(){
 	timeout(10); 
 	curs_set(0);
 
+	dir_set_selected_file_current(selected_file_current);
+
 	update_selected_file();
 
 	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_0);

main.c

@@ -59,6 +59,11 @@ int main(){
 	char threading = 0;
 	terminal_width_empty_line = malloc(terminal_width);
 
+	pthread_create(&thread_t, NULL, thread_top, &status); /*top bar*/
+	pthread_create(&thread_l, NULL, thread_lft, &status); /*parent_content slash win_l*/
+	pthread_create(&thread_m, NULL, thread_mid, &status); /*current_content slash win_m*/
+	pthread_create(&thread_r, NULL, thread_rgt, &status); /*child_content slash win_r*/
+	pthread_create(&thread_b, NULL, thread_btm, &status); /*bottom bar*/
 		
 	while(!(status & STATUS_QUIT_PROGRAM)){
 		getmaxyx(stdscr, terminal_height, terminal_width);
@@ -68,28 +73,14 @@ int main(){
 			temp_width = terminal_width;
 			temp_heigth = terminal_height;
 		}
-		if (status & STATUS_RUN_BACKEND && threading) {
-			pthread_cancel(thread_b);
-			pthread_cancel(thread_r);
-			pthread_cancel(thread_m);
-			pthread_cancel(thread_l);
-			pthread_cancel(thread_t);
-               }
 		if (threading) {
 			status &= ~(STATUS_RELOAD_DIRECTORY);
-			pthread_join(thread_t, NULL);
-			pthread_join(thread_l, NULL);
-			pthread_join(thread_m, NULL);
-			pthread_join(thread_b, NULL);
-			pthread_join(thread_r, NULL);
 			threading = 0;
 		} 
 		if (status & STATUS_RUN_BACKEND) {
-			pthread_create(&thread_t, NULL, thread_top, &status); /*top bar*/
-			pthread_create(&thread_l, NULL, thread_lft, &status); /*parent_content slash win_l*/
-			pthread_create(&thread_m, NULL, thread_mid, &status); /*current_content slash win_m*/
-			pthread_create(&thread_b, NULL, thread_btm, &status); /*bottom bar*/
-			pthread_create(&thread_r, NULL, thread_rgt, &status); /*child_content slash win_r*/
+			pthread_cond_signal(&cond_top);
+			pthread_cond_signal(&cond_mid);
+			pthread_cond_signal(&cond_btm);
 			status &= ~(STATUS_RUN_BACKEND);
 			status |= STATUS_UPDATE_SCREEN_0;
 			threading = 1;

threading.c

@@ -18,9 +18,12 @@ pthread_mutex_t mutex_lft;
 pthread_mutex_t mutex_mid;
 pthread_mutex_t mutex_rgt;
 pthread_mutex_t mutex_selection;
-pthread_mutex_t mutex_wait;
-pthread_cond_t cond_wait;
-volatile char wait_count; /* this is used to determine how many threads are waiting for cont_wait */
+pthread_cond_t cond_mid;
+pthread_cond_t cond_rgt;
+pthread_cond_t cond_lft;
+pthread_cond_t cond_top;
+pthread_cond_t cond_btm;
+
 
 file *rgt_content;
 file *mid_content;
@@ -29,7 +32,6 @@ char *rgt_buffer; /* used for file previews, unlike rgt_content, which is used f
 char *btm_buffer;
 char *top_buffer; /* current path */
 
-volatile file *file_current;
 
 
 unsigned long rgt_file_count = 0;
@@ -42,219 +44,218 @@ unsigned long top_width;
 volatile unsigned long selected_file_current = 0;
 volatile unsigned long selected_file_last = 0;
 extern unsigned int terminal_width;
+extern unsigned int status;
 
 
 void *thread_mid(void *data){
-	unsigned int status = *(unsigned int*)data;
-	pthread_mutex_lock(&mutex_mid);
+
+	while(!(status & STATUS_QUIT_PROGRAM)){
+		pthread_mutex_lock(&mutex_mid);
+		pthread_cond_wait(&cond_mid, &mutex_mid);
+
+		char *path;
+		if((path=getcwd(NULL, 0)) == NULL) {
+			mid_content = malloc(sizeof(file));
+			mid_content->file_name = "cannot open directory";
+			mid_file_count = 1;
+		} else {
 
 
-	char *path;
-	if((path=getcwd(NULL, 0)) == NULL) {
-		mid_content = malloc(sizeof(file));
-		mid_content->file_name = "cannot open directory";
-		mid_file_count = 1;
-	} else {
-
-
-		if (status & STATUS_RELOAD_DIRECTORY) {
-			unsigned long i = 0;
-			for (i = 0; i < mid_file_count; i++) {
-				free(mid_content[i].file_name);
-			}
-			free(mid_content);
-			mid_file_count = get_dir_size(path);
-			if (mid_file_count > 0) {
-				mid_content = malloc(mid_file_count * sizeof(file));
-				memset(mid_content, '\0', mid_file_count * sizeof(file));
-				get_dir_content(path, &mid_file_count, mid_content);
-			} else {
-				selected_file_current = 0;
-				mid_content = malloc(sizeof(file));
-				mid_content->status = FILE_STATUS_DIR_EMPTY;
-				mid_content->file_type = 0;
-				mid_content->file_size = 0;
-				mid_content->permissions = 0;
-				mid_content->color_pair = 0;
-				mid_content->file_name = "empty dir";
-
-				file_current->file_name = mid_content->file_name;
-				file_current->file_size = mid_content->file_size;
-				file_current->file_type = mid_content->file_type;
-				file_current->color_pair = mid_content->color_pair;
-				file_current->permissions = mid_content->permissions;
-				file_current->status = mid_content->status;
-				mid_file_count = 0;
-
-				while(wait_count < 2){
-					/*wait for thread_rgt and thread_btm to lock*/
+			if (status & STATUS_RELOAD_DIRECTORY) {
+				unsigned long i = 0;
+				for (i = 0; i < mid_file_count; i++) {
+					free(mid_content[i].file_name);
 				}
-				pthread_mutex_lock(&mutex_wait);
-				pthread_cond_broadcast(&cond_wait);
-				pthread_mutex_unlock(&mutex_wait);
+				free(mid_content);
+				mid_file_count = get_dir_size(path);
+				if (mid_file_count > 0) {
+					mid_content = malloc(mid_file_count * sizeof(file));
+					memset(mid_content, '\0', mid_file_count * sizeof(file));
+					get_dir_content(path, &mid_file_count, mid_content);
+				} else {
+					selected_file_current = 0;
+					mid_content = malloc(sizeof(file));
+					mid_content->status = FILE_STATUS_DIR_EMPTY;
+					mid_content->file_type = 0;
+					mid_content->file_size = 0;
+					mid_content->permissions = 0;
+					mid_content->color_pair = 0;
+					mid_content->file_name = "empty dir";
 
-				free(path);
-				pthread_mutex_unlock(&mutex_mid);
-				pthread_exit(0);
+					mid_file_count = 0;
+
+					pthread_cond_signal(&cond_rgt);
+					pthread_cond_signal(&cond_lft);
+
+					free(path);
+					pthread_mutex_unlock(&mutex_mid);
+					pthread_exit(0);
+				}
+				pthread_mutex_lock(&mutex_selection);
+				update_selected_file();
+				pthread_mutex_unlock(&mutex_selection);
 			}
-			pthread_mutex_lock(&mutex_selection);
-			update_selected_file();
-			pthread_mutex_unlock(&mutex_selection);
+
+
+			pthread_cond_signal(&cond_rgt);
+			pthread_cond_signal(&cond_lft);
+
 		}
-
-
-		while(wait_count < 2){
-			/*wait for thread_rgt and thread_btm to lock*/
-		}
-		pthread_mutex_lock(&mutex_wait);
-		pthread_cond_broadcast(&cond_wait);
-		pthread_mutex_unlock(&mutex_wait);
-
+		free(path);
+		pthread_mutex_unlock(&mutex_mid);
 	}
-	free(path);
-	pthread_mutex_unlock(&mutex_mid);
 	pthread_exit(0);
 }
 void *thread_lft(void *data){
-	unsigned int status = *(unsigned int*)data;
-	pthread_mutex_lock(&mutex_lft);
+	unsigned int local_status = *(unsigned int*)data;
 
-	char *path;
-	if((path=getcwd(NULL, 0)) == NULL) {
-		lft_content = malloc(sizeof(file));
-		lft_content[0].file_name = "cannot open directory";
-		lft_file_count = 1;
-	} else {
+	while(!(status & STATUS_QUIT_PROGRAM)){
+		pthread_mutex_lock(&mutex_lft);
+		pthread_cond_wait(&cond_lft, &mutex_lft);
 
-		path[strrchr(path, '/')-path] = '\0';
-		path[0] = '/';
+		char *path;
+		if((path=getcwd(NULL, 0)) == NULL) {
+			lft_content = malloc(sizeof(file));
+			lft_content[0].file_name = "cannot open directory";
+			lft_file_count = 1;
+		} else {
+
+			path[strrchr(path, '/')-path] = '\0';
+			path[0] = '/';
+
+			if (local_status & STATUS_RELOAD_DIRECTORY) {
+				lft_file_count = get_dir_size(path);
+				free(lft_content);
+				lft_content = malloc(lft_file_count * sizeof(file));
+				memset(lft_content, '\0', lft_file_count * sizeof(file));
+				get_dir_content(path, &lft_file_count, lft_content);
+			}
 
-		if (status & STATUS_RELOAD_DIRECTORY) {
-			lft_file_count = get_dir_size(path);
-			free(lft_content);
-			lft_content = malloc(lft_file_count * sizeof(file));
-			memset(lft_content, '\0', lft_file_count * sizeof(file));
-			get_dir_content(path, &lft_file_count, lft_content);
 		}
-
+		free(path);
+		pthread_mutex_unlock(&mutex_lft);
 	}
-	free(path);
-	pthread_mutex_unlock(&mutex_lft);
 	pthread_exit(0);
 
 
 }
 void *thread_rgt(void *data){
-	unsigned int status = *(unsigned int*)data;
-	(void)status;
+	unsigned int local_status = *(unsigned int*)data;
+	(void)local_status;
 
-	pthread_mutex_lock(&mutex_rgt);
-	pthread_mutex_lock(&mutex_wait);
-	wait_count++;
-	pthread_cond_wait(&cond_wait, &mutex_wait);
-	wait_count--;
-	pthread_mutex_unlock(&mutex_wait);
+	file file_current;
+	while(!(status & STATUS_QUIT_PROGRAM)){
+		pthread_mutex_lock(&mutex_rgt);
+		pthread_cond_wait(&cond_rgt, &mutex_rgt);
 
 
-	pthread_mutex_lock(&mutex_selection);
-	char *path = malloc(strlen(file_current->file_name) + 1);
-	strcpy(path, file_current->file_name);
-	unsigned char file_current_type = file_current->file_type;
-	unsigned long file_current_size = file_current->file_size;
-	char file_current_status = file_current->status;
-	pthread_mutex_unlock(&mutex_selection);
+		pthread_mutex_lock(&mutex_mid);
+		char *path = malloc(strlen(mid_content[selected_file_current].file_name) + 1);
+		strcpy(path, mid_content[selected_file_current].file_name);
+		file_current.file_type = mid_content[selected_file_current].file_type;
+		file_current.file_size = mid_content[selected_file_current].file_size;
+		file_current.status = mid_content[selected_file_current].status;
+		pthread_mutex_unlock(&mutex_mid);
 
-	if (file_current_type == FILE_TYPE_DIR || file_current_type == FILE_TYPE_SYMLINK) {
-		images_clear();
+		if (file_current.file_type == FILE_TYPE_DIR || file_current.file_type == FILE_TYPE_SYMLINK) {
+			images_clear();
 
-		unsigned long i = 0;
-		for (i = 0; i < rgt_file_count; i++) {
-			free(rgt_content[i].file_name);
-		}
-		free(rgt_content);
+			unsigned long i = 0;
+			for (i = 0; i < rgt_file_count; i++) {
+				if (rgt_content[i].file_name) {
+					free(rgt_content[i].file_name);
+				}
+			}
+			free(rgt_content);
 
-		rgt_file_count = get_dir_size(path);
-		rgt_content = malloc(rgt_file_count * sizeof(file));
-		memset(rgt_content, '\0', rgt_file_count * sizeof(file));
-		get_dir_content(path, &rgt_file_count, rgt_content);
-		rgt_content[0].status &= ~FILE_STATUS_FILE_OPEN;
+			rgt_file_count = get_dir_size(path);
+			rgt_content = malloc(rgt_file_count * sizeof(file));
+			memset(rgt_content, '\0', rgt_file_count * sizeof(file));
+			get_dir_content(path, &rgt_file_count, rgt_content);
+			rgt_content[0].status &= ~FILE_STATUS_FILE_OPEN;
 
-		free(rgt_buffer);
-		rgt_buffer = malloc(sizeof(char));
-		rgt_buffer[0] = '\0';
-	} else {
-
-		unsigned long i = 0;
-		for (i = 0; i < rgt_file_count; i++) {
-			free(rgt_content[i].file_name);
-		}
-		free(rgt_content);
-		rgt_file_count = 0;
-		rgt_content = malloc(sizeof(file));
-
-		free(rgt_buffer);
-		if (file_current_status & FILE_STATUS_DIR_EMPTY) {
-			rgt_buffer = "empty dir";
+			free(rgt_buffer);
+			rgt_buffer = malloc(sizeof(char));
+			rgt_buffer[0] = '\0';
 		} else {
-			rgt_content->file_type = FILE_TYPE_OPEN_FILE;
-			rgt_content->status = FILE_STATUS_HOVER;
-			rgt_buffer = preview_file(path, file_current_size);
-		}
-	}
-	free(path);
 
-	pthread_mutex_unlock(&mutex_rgt);
+			unsigned long i = 0;
+			for (i = 0; i < rgt_file_count; i++) {
+				if (rgt_content[i].file_name) {
+					free(rgt_content[i].file_name);
+				}
+			}
+			free(rgt_content);
+			rgt_file_count = 0;
+			rgt_content = malloc(sizeof(file));
+
+			free(rgt_buffer);
+			if (file_current.status & FILE_STATUS_DIR_EMPTY) {
+				rgt_buffer = "empty dir";
+			} else {
+				rgt_content->file_type = FILE_TYPE_OPEN_FILE;
+				rgt_content->status = FILE_STATUS_HOVER;
+				rgt_buffer = preview_file(path, file_current.file_size);
+			}
+		}
+		free(path);
+
+		pthread_mutex_unlock(&mutex_rgt);
+	}
 	pthread_exit(0);
 }
 void *thread_top(void *data){
-	unsigned int status = *(unsigned int*)data;
-	(void)status;
+	unsigned int local_status = *(unsigned int*)data;
+	(void)local_status;
 
-	pthread_mutex_lock(&mutex_top);
-	free(top_buffer);
+	while(!(status & STATUS_QUIT_PROGRAM)){
+		pthread_mutex_lock(&mutex_top);
+		pthread_cond_wait(&cond_top, &mutex_top);
 
-	char *path;
-	if((path=getcwd(NULL, 0)) == NULL) {
-		top_buffer = malloc(sizeof("cannot open directory"));
-		top_width = sizeof("cannot open directory");
-		top_buffer = "cannot open directory";
-	} else {
-		top_buffer = getcwd(NULL, 0);
-		top_width = strlen(top_buffer);
+		free(top_buffer);
+
+		char *path;
+		if((path=getcwd(NULL, 0)) == NULL) {
+			top_buffer = malloc(sizeof("cannot open directory"));
+			top_width = sizeof("cannot open directory");
+			top_buffer = "cannot open directory";
+		} else {
+			top_buffer = getcwd(NULL, 0);
+			top_width = strlen(top_buffer);
+		}
+
+		free(path);
+		pthread_mutex_unlock(&mutex_top);
 	}
-
-	free(path);
-	pthread_mutex_unlock(&mutex_top);
 	pthread_exit(0);
 }
 void *thread_btm(void *data){
-	unsigned int status = *(unsigned int*)data;
-	(void)status;
+	unsigned int local_status = *(unsigned int*)data;
+	(void)local_status;
 
-	pthread_mutex_lock(&mutex_btm);
-	pthread_mutex_lock(&mutex_wait);
-	wait_count++;
-	pthread_cond_wait(&cond_wait, &mutex_wait);
-	wait_count--;
-	pthread_mutex_unlock(&mutex_wait);
-
-	free(btm_buffer);
-	int buffer_width = terminal_width;
-	btm_buffer = malloc(buffer_width);
-	memset(btm_buffer, 0, buffer_width);
-	btm_buffer[0] = (S_ISDIR(file_current->permissions))  ? 'd' : '-';
-	btm_buffer[1] = (file_current->permissions & S_IRUSR) ? 'r' : '-';
-        btm_buffer[2] = (file_current->permissions & S_IWUSR) ? 'w' : '-';
-        btm_buffer[3] = (file_current->permissions & S_IXUSR) ? 'x' : '-';
-        btm_buffer[4] = (file_current->permissions & S_IRGRP) ? 'r' : '-';
-        btm_buffer[5] = (file_current->permissions & S_IWGRP) ? 'w' : '-';
-        btm_buffer[6] = (file_current->permissions & S_IXGRP) ? 'x' : '-';
-        btm_buffer[7] = (file_current->permissions & S_IROTH) ? 'r' : '-';
-        btm_buffer[8] = (file_current->permissions & S_IWOTH) ? 'w' : '-';
-        btm_buffer[9] = (file_current->permissions & S_IXOTH) ? 'x' : '-';
+	while(!(status & STATUS_QUIT_PROGRAM)){
+		pthread_mutex_lock(&mutex_btm);
+		pthread_cond_wait(&cond_btm, &mutex_btm);
 
 
-	pthread_mutex_unlock(&mutex_btm);
+		free(btm_buffer);
+		int buffer_width = terminal_width;
+		btm_buffer = malloc(buffer_width);
+		memset(btm_buffer, 0, buffer_width);
+		btm_buffer[0] = (S_ISDIR(mid_content[selected_file_current].permissions))  ? 'd' : '-';
+		btm_buffer[1] = (mid_content[selected_file_current].permissions & S_IRUSR) ? 'r' : '-';
+		btm_buffer[2] = (mid_content[selected_file_current].permissions & S_IWUSR) ? 'w' : '-';
+		btm_buffer[3] = (mid_content[selected_file_current].permissions & S_IXUSR) ? 'x' : '-';
+		btm_buffer[4] = (mid_content[selected_file_current].permissions & S_IRGRP) ? 'r' : '-';
+		btm_buffer[5] = (mid_content[selected_file_current].permissions & S_IWGRP) ? 'w' : '-';
+		btm_buffer[6] = (mid_content[selected_file_current].permissions & S_IXGRP) ? 'x' : '-';
+		btm_buffer[7] = (mid_content[selected_file_current].permissions & S_IROTH) ? 'r' : '-';
+		btm_buffer[8] = (mid_content[selected_file_current].permissions & S_IWOTH) ? 'w' : '-';
+		btm_buffer[9] = (mid_content[selected_file_current].permissions & S_IXOTH) ? 'x' : '-';
+
+
+		pthread_mutex_unlock(&mutex_btm);
+	}
 	pthread_exit(0);
 }
 
@@ -280,11 +281,6 @@ void threading_init(){
 	rgt_content->file_name = malloc(sizeof(char));
 	rgt_content->file_name[0] = '\0';
 
-	file_current = malloc(sizeof(file));
-	file_current->file_type = 0;
-	file_current->file_size = 0;
-	file_current->file_name = malloc(sizeof(char));
-	file_current->file_name[0] = '\0';
 
 	volatile char vol; /* needed to make sure higher optimization steps dont move these around */
 	vol = pthread_mutex_init(&mutex_top, NULL);
@@ -293,8 +289,11 @@ void threading_init(){
 	vol = pthread_mutex_init(&mutex_btm, NULL);
 	vol = pthread_mutex_init(&mutex_rgt, NULL);
 	vol = pthread_mutex_init(&mutex_selection, NULL);
-	vol = pthread_mutex_init(&mutex_wait, NULL);
-	vol = pthread_cond_init(&cond_wait, NULL);
+	vol = pthread_cond_init(&cond_rgt, NULL);
+	vol = pthread_cond_init(&cond_lft, NULL);
+	vol = pthread_cond_init(&cond_mid, NULL);
+	vol = pthread_cond_init(&cond_top, NULL);
+	vol = pthread_cond_init(&cond_btm, NULL);
 	vol;
 	selected_file_current = 0;
 	selected_file_last = 0;

window.c

@@ -5,6 +5,8 @@
 #include "defines.h"
 #include "dir.h"
 
+extern unsigned int terminal_height;
+extern unsigned int terminal_width;
 extern unsigned int status;
 extern char *input;
 
@@ -42,15 +44,13 @@ void window_top(WINDOW *win){
 		wattroff(win, COLOR_PAIR(COLOR_PATH));
 		pthread_mutex_unlock(&mutex_top);
 	} else {
-		wprintw(win,"loading"); 
+		mvwaddstr(win, 0, terminal_width/2, "LOADING"); 
 		status |= STATUS_UPDATE_SCREEN_0;
 	}
 }
 void window_btm(WINDOW *win){
 	werase(win);
-	unsigned long local_width;
-	unsigned long local_height;
-	getmaxyx(win, local_height, local_width);
+
 	if (pthread_mutex_trylock(&mutex_btm) == 0) {
 		if (*top_buffer != ' ') { /*printing ' ' (standard initialized value, see threading_init) makes valgrind throw a fuss*/
 			mvwprintw(win, 0, 0, "%s", btm_buffer);
@@ -59,55 +59,46 @@ void window_btm(WINDOW *win){
 		/*the printing of the input char is done in user_interactions*/
 		/*the printing of all possible inputs are done in user_interactions */
 	} else {
-		mvwprintw(win, local_height/2, local_width/2, "LOADING"); 
+		mvwaddstr(win, 0, terminal_width/2, "LOADING"); 
 		status |= STATUS_UPDATE_SCREEN_0;
 	}
 }
 void window_lft(WINDOW *win){
 	werase(win);
 
-	unsigned long local_width;
-	unsigned long local_height;
-	getmaxyx(win, local_height, local_width);
 	if (pthread_mutex_trylock(&mutex_lft) == 0) {
 		print_dir(win, 0, &lft_file_count, lft_content);
 		pthread_mutex_unlock(&mutex_lft);
 
 	} else {
-		mvwprintw(win, local_height/2, local_width/2, "LOADING"); 
+		mvwaddstr(win, terminal_height/2, terminal_width/8, "LOADING"); 
 		status |= STATUS_UPDATE_SCREEN_0;
 	}
 }
 void window_mid(WINDOW *win){
 	werase(win);
 
-	unsigned long local_width;
-	unsigned long local_height;
-	getmaxyx(win, local_height, local_width);
 	if (pthread_mutex_trylock(&mutex_mid) == 0) {
 		if (mid_file_count == 0) {
-			mvwprintw(win, 0, 0, "empty");
+			mvwaddstr(win, 0, 0, "empty");
 		} else {
 			print_dir(win, 1, &mid_file_count, mid_content);
 		}
 		pthread_mutex_unlock(&mutex_mid);
 	} else {
-		mvwprintw(win, local_height/2, local_width/2, "LOADING"); 
+		mvwaddstr(win, terminal_height/2, terminal_width/4, "LOADING"); 
 		status |= STATUS_UPDATE_SCREEN_0;
 	}
 }
 void window_rgt(WINDOW *win){
 	werase(win);
 
-	unsigned long local_width;
-	unsigned long local_height;
-	getmaxyx(win, local_height, local_width);
 	if (pthread_mutex_trylock(&mutex_rgt) == 0) {
 		if (rgt_file_count == 0) {
 			if (rgt_content[0].file_type == FILE_TYPE_OPEN_FILE) {
-				mvwprintw(win, 0, 0, "%s", rgt_buffer);
+				mvwaddnstr(win, 0, 0, rgt_buffer, (terminal_width/2) * terminal_width);
 			} else {
-				mvwprintw(win, 0, 0, "empty");
+				mvwaddstr(win, 0, 0, "empty");
 			}
 
 
@@ -116,7 +107,7 @@ void window_rgt(WINDOW *win){
 		}
 		pthread_mutex_unlock(&mutex_rgt);
 	} else {
-		mvwprintw(win, local_height/2, local_width/2, "LOADING"); 
+		mvwaddstr(win, terminal_height/2, terminal_width/4, "LOADING"); 
 		status |= STATUS_UPDATE_SCREEN_0;
 	}
 }