diff options
Diffstat (limited to 'sysdeps/stub/bits/libc-lock.h')
| -rw-r--r-- | sysdeps/stub/bits/libc-lock.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/sysdeps/stub/bits/libc-lock.h b/sysdeps/stub/bits/libc-lock.h index fa4dcdde1d..9efd799dab 100644 --- a/sysdeps/stub/bits/libc-lock.h +++ b/sysdeps/stub/bits/libc-lock.h @@ -70,6 +70,20 @@ /* Unlock the recursive named lock variable. */ #define __libc_lock_unlock_recursive(NAME) + +/* Define once control variable. */ +#define __libc_once_define(NAME) int NAME = 0 + +/* Call handler iff the first call. */ +#define __libc_once(ONCE_CONTROL, INIT_FUNCTION) \ + do { \ + if ((ONCE_CONTROL) == 0) { \ + INIT_FUNCTION (); \ + (ONCE_CONTROL) = 1; \ + } \ + } while (0) + + /* Start critical region with cleanup. */ #define __libc_cleanup_region_start(FCT, ARG) |