Changeset cb10bc9 in mainline for uspace/lib/c/generic/futex.c

Timestamp:

2012-12-04T02:21:03Z (12 years ago)

Author:

Adam Hraska <adam.hraska+hos@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

1b7eec9

Parents:

927a181e

Message:

Inlined uspace futex functions.

File:

• uspace/lib/c/generic/futex.c (modified) (2 diffs)

uspace/lib/c/generic/futex.c

@@ -35 +35 @@
 #include <futex.h>
 #include <atomic.h>
-#include <libc.h>
-#include <sys/types.h>
 
 /** Initialize futex counter.
@@ -49 +47 @@
 }
 
-/** Try to down the futex.
- *
- * @param futex Futex.
- *
- * @return Non-zero if the futex was acquired.
- * @return Zero if the futex was not acquired.
- *
- */
-int futex_trydown(futex_t *futex)
-{
-        return cas(&futex->val, 1, 0);
-}
-
-/** Down the futex.
- *
- * @param futex Futex.
- *
- * @return ENOENT if there is no such virtual address.
- * @return Zero in the uncontended case.
- * @return Otherwise one of ESYNCH_OK_ATOMIC or ESYNCH_OK_BLOCKED.
- *
- */
-int futex_down(futex_t *futex)
-{
-        if ((atomic_signed_t) atomic_predec(&futex->val) < 0)
-                return __SYSCALL1(SYS_FUTEX_SLEEP, (sysarg_t) &futex->val.count);
-        
-        return 0;
-}
-
-/** Up the futex.
- *
- * @param futex Futex.
- *
- * @return ENOENT if there is no such virtual address.
- * @return Zero in the uncontended case.
- *
- */
-int futex_up(futex_t *futex)
-{
-        if ((atomic_signed_t) atomic_postinc(&futex->val) < 0)
-                return __SYSCALL1(SYS_FUTEX_WAKEUP, (sysarg_t) &futex->val.count);
-        
-        return 0;
-}
 
 /** @}