-O2 related refactoring

threading.c

@@ -28,7 +28,7 @@ char *btm_buffer;
 
 file *file_current;
 
-char *top_content; /* current path */
+char *top_buffer; /* current path */
 
 unsigned long rgt_file_count;
 unsigned long mid_file_count;
@@ -191,17 +191,20 @@ void *thread_rgt(void *data){
 		get_dir_content(path, &rgt_file_count, rgt_content);
 		rgt_content[0].status &= ~FILE_STATUS_FILE_OPEN;
 		free(path);
+
+		free(rgt_buffer);
+		rgt_buffer = malloc(sizeof(char));
+		memset(rgt_buffer, ' ', sizeof(char));
 	} else {
 
 		rgt_file_count = 0;
 
+		free(rgt_buffer);
 		if (rgt_content->status & FILE_STATUS_DIR_EMPTY) {
-			free(rgt_buffer);
 			rgt_buffer = "empty dir";
 		} else {
 			rgt_content->file_type = FILE_TYPE_OPEN_FILE;
 			rgt_content->status = FILE_STATUS_HOVER;
-			free(rgt_buffer);
 			rgt_buffer = preview_file(rgt_content);
 		}
 	}
@@ -211,16 +214,16 @@ void *thread_rgt(void *data){
 }
 void *thread_top(void *data){
 	pthread_mutex_lock(&mutex_top);
-	free(top_content);
+	free(top_buffer);
 
 	char *path;
 	if((path=getcwd(NULL, 0)) == NULL) {
-		top_content = malloc(sizeof("cannot open directory"));
+		top_buffer = malloc(sizeof("cannot open directory"));
 		top_width = sizeof("cannot open directory");
-		top_content = "cannot open directory";
+		top_buffer = "cannot open directory";
 	} else {
-		top_content = getcwd(NULL, 0);
-		top_width = strlen(top_content);
+		top_buffer = getcwd(NULL, 0);
+		top_width = strlen(top_buffer);
 	}
 
 	free(path);
@@ -228,12 +231,12 @@ void *thread_top(void *data){
 	pthread_exit(0);
 }
 void *thread_btm(void *data){
+	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);
-	pthread_mutex_lock(&mutex_btm);
 
 	free(btm_buffer);
 	int buffer_width = terminal_width;
@@ -260,9 +263,12 @@ void threading_init(){
 	mid_content = malloc(sizeof(file));
 	lft_content = malloc(sizeof(file));
 
-	top_content = malloc(sizeof(char));
+	top_buffer = malloc(sizeof(char));
 	rgt_buffer = malloc(sizeof(char));
 	btm_buffer = malloc(sizeof(char));
+	memset(top_buffer, ' ', sizeof(char));
+	memset(rgt_buffer, ' ', sizeof(char));
+	memset(btm_buffer, ' ', sizeof(char));
 
 
 	rgt_content[0].file_type = 0;
@@ -291,7 +297,7 @@ void threading_free(){
 	free(rgt_content);
 	free(mid_content);
 	free(lft_content);
-	free(top_content);
+	free(top_buffer);
 	
 	pthread_mutex_destroy(&mutex_top);
 	pthread_mutex_destroy(&mutex_mid);