*/
int cg_enumerate_processes(const char *controller, const char *path, FILE **_f);
-int cg_enumerate_tasks(const char *controller, const char *path, FILE **_f);
int cg_read_pid(FILE *f, pid_t *_pid);
int cg_enumerate_subgroups(const char *controller, const char *path, DIR **_d);
int cg_controller_from_attr(const char *attr, char **controller);
char *cg_escape(const char *p);
-char *cg_unescape(const char *p);
+char *cg_unescape(const char *p) _pure_;
bool cg_controller_is_valid(const char *p, bool allow_named);