# define UNLOCK_STRTAB_MUTEX MUTEX_UNLOCK(&PL_strtab_mutex)
# define LOCK_CRED_MUTEX MUTEX_LOCK(&PL_cred_mutex)
# define UNLOCK_CRED_MUTEX MUTEX_UNLOCK(&PL_cred_mutex)
-
+# define LOCK_FDPID_MUTEX MUTEX_LOCK(&PL_fdpid_mutex)
+# define UNLOCK_FDPID_MUTEX MUTEX_UNLOCK(&PL_fdpid_mutex)
/* Values and macros for thr->flags */
#define THRf_STATE_MASK 7
# define UNLOCK_CRED_MUTEX
#endif
+#ifndef LOCK_FDPID_MUTEX
+# define LOCK_FDPID_MUTEX
+#endif
+
+#ifndef UNLOCK_FDPID_MUTEX
+# define UNLOCK_FDPID_MUTEX
+#endif
+
/* THR, SET_THR, and dTHR are there for compatibility with old versions */
#ifndef THR
# define THR PERL_GET_THX