GCC主要数据结构之gcov_root

GCC:libgcov.h

/* Root of a program/shared-object state */
struct gcov_root
{
  struct gcov_info *list;
  unsigned dumped : 1; /* counts have been dumped.  */
  unsigned run_counted : 1;  /* run has been accounted for.  */
  struct gcov_root *next;
  struct gcov_root *prev;
};

extern struct gcov_root __gcov_root ATTRIBUTE_HIDDEN;
struct gcov_master
{
  gcov_unsigned_t version;
  struct gcov_root *root;
};

/* Exactly one of these will be active in the process.  */
extern struct gcov_master __gcov_master;