};
/**
- * futex() - SYS_futex syscall wrapper
+ * futex_syscall() - SYS_futex syscall wrapper
* @uaddr: address of first futex
* @op: futex op code
* @val: typically expected value of uaddr, but varies by op
* @val3: varies by op
* @opflags: flags to be bitwise OR'd with op, such as FUTEX_PRIVATE_FLAG
*
- * futex() is used by all the following futex op wrappers. It can also be
+ * futex_syscall() is used by all the following futex op wrappers. It can also be
* used for misuse and abuse testing. Generally, the specific op wrappers
- * should be used instead. It is a macro instead of an static inline function as
- * some of the types over overloaded (timeout is used for nr_requeue for
- * example).
+ * should be used instead.
*
* These argument descriptions are the defaults for all
* like-named arguments in the following wrappers except where noted below.
*/
-#define futex(uaddr, op, val, timeout, uaddr2, val3, opflags) \
- syscall(SYS_futex, uaddr, op | opflags, val, timeout, uaddr2, val3)
+static inline int
+futex_syscall(volatile u_int32_t *uaddr, int op, u_int32_t val, struct timespec *timeout,
+ volatile u_int32_t *uaddr2, int val3, int opflags)
+{
+ return syscall(SYS_futex, uaddr, op | opflags, val, timeout, uaddr2, val3);
+}
+
+static inline int
+futex_syscall_nr_requeue(volatile u_int32_t *uaddr, int op, u_int32_t val, int nr_requeue,
+ volatile u_int32_t *uaddr2, int val3, int opflags)
+{
+ return syscall(SYS_futex, uaddr, op | opflags, val, nr_requeue, uaddr2, val3);
+}
/**
* futex_wait() - block on uaddr with optional timeout
static inline int
futex_wait(u_int32_t *uaddr, u_int32_t val, struct timespec *timeout, int opflags)
{
- return futex(uaddr, FUTEX_WAIT, val, timeout, NULL, 0, opflags);
+ return futex_syscall(uaddr, FUTEX_WAIT, val, timeout, NULL, 0, opflags);
}
/**
static inline int
futex_wake(u_int32_t *uaddr, int nr_wake, int opflags)
{
- return futex(uaddr, FUTEX_WAKE, nr_wake, NULL, NULL, 0, opflags);
+ return futex_syscall(uaddr, FUTEX_WAKE, nr_wake, NULL, NULL, 0, opflags);
}
/**
static inline int
futex_lock_pi(u_int32_t *uaddr, struct timespec *timeout, int opflags)
{
- return futex(uaddr, FUTEX_LOCK_PI, 0, timeout, NULL, 0, opflags);
+ return futex_syscall(uaddr, FUTEX_LOCK_PI, 0, timeout, NULL, 0, opflags);
}
/**
static inline int
futex_unlock_pi(u_int32_t *uaddr, int opflags)
{
- return futex(uaddr, FUTEX_UNLOCK_PI, 0, NULL, NULL, 0, opflags);
+ return futex_syscall(uaddr, FUTEX_UNLOCK_PI, 0, NULL, NULL, 0, opflags);
}
/**
futex_cmp_requeue(u_int32_t *uaddr, u_int32_t val, u_int32_t *uaddr2, int nr_wake,
int nr_requeue, int opflags)
{
- return futex(uaddr, FUTEX_CMP_REQUEUE, nr_wake, nr_requeue, uaddr2,
- val, opflags);
+ return futex_syscall_nr_requeue(uaddr, FUTEX_CMP_REQUEUE, nr_wake, nr_requeue, uaddr2,
+ val, opflags);
}
/**
futex_wait_requeue_pi(u_int32_t *uaddr, u_int32_t val, u_int32_t *uaddr2,
struct timespec *timeout, int opflags)
{
- return futex(uaddr, FUTEX_WAIT_REQUEUE_PI, val, timeout, uaddr2, 0,
- opflags);
+ return futex_syscall(uaddr, FUTEX_WAIT_REQUEUE_PI, val, timeout, uaddr2, 0,
+ opflags);
}
/**
futex_cmp_requeue_pi(u_int32_t *uaddr, u_int32_t val, u_int32_t *uaddr2,
int nr_requeue, int opflags)
{
- return futex(uaddr, FUTEX_CMP_REQUEUE_PI, 1, nr_requeue, uaddr2,
- val, opflags);
+ return futex_syscall_nr_requeue(uaddr, FUTEX_CMP_REQUEUE_PI, 1, nr_requeue, uaddr2,
+ val, opflags);
}
#endif /* _FUTEX_H */