Function report |
Source Code:kernel\futex.c |
Create Date:2022-07-28 10:54:52 |
Last Modify:2020-03-17 15:28:32 | Copyright©Brick |
home page | Tree |
Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:ex_wait_requeue_pi() - Wait on uaddr and take uaddr2*@uaddr: the futex we initially wait on (non-pi)*@flags: futex flags (FLAGS_SHARED, FLAGS_CLOCKRT, etc
Proto:static int futex_wait_requeue_pi(unsigned int __user *uaddr, unsigned int flags, unsigned int val, ktime_t *abs_time, unsigned int bitset, unsigned int __user *uaddr2)
Type:int
Parameter:
Type | Parameter | Name |
---|---|---|
unsigned int __user * | uaddr | |
unsigned int | flags | |
unsigned int | val | |
ktime_t * | abs_time | |
unsigned int | bitset | |
unsigned int __user * | uaddr2 |
3300 | struct futex_pi_state * pi_state = NULL |
3303 | key2 = FUTEX_KEY_INIT |
3304 | q = futex_q_init |
3307 | If Not IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',* 0 otherwise.(CONFIG_FUTEX_PI) Then Return -ENOSYS |
3323 | rt_mutex_init_waiter( & rt_waiter) |
3326 | If Value for the false possibility is greater at compile time(ret != 0) Then Go to out |
3331 | requeue_pi_key = key2 |
3356 | spin_unlock( & lock) |
3357 | If ret Then Go to out_put_keys |
3370 | If Not rt_waiter Then |
3375 | If pi_state && owner != current process Then |
3377 | ret = fixup_pi_state_owner(uaddr2, & q, current process) |
3378 | If ret && rt_mutex_owner( & The PI object:) == current process Then |
3380 | get_pi_state(pi_state) |
3386 | Drops a reference to the pi_state object and frees or caches it* when the last reference is gone. |
3387 | spin_unlock(lock_ptr) |
3389 | Else |
3398 | pi_mutex = The PI object: |
3399 | ret = _mutex_wait_proxy_lock() - Wait for lock acquisition*@lock: the rt_mutex we were woken on*@to: the timeout, null if none |
3405 | debug_rt_mutex_free_waiter( & rt_waiter) |
3423 | If ret && rt_mutex_owner( & The PI object:) == current process Then |
3425 | get_pi_state(pi_state) |
3432 | If pi_state Then |
3433 | rt_mutex_futex_unlock( & The PI object:) |
3445 | ret = -EWOULDBLOCK |
3448 | out_put_keys : |
3449 | put_futex_key( & key) |
3450 | out_key2 : |
3451 | put_futex_key( & key2) |
3453 | out : |
3454 | If to Then |
3456 | destroy_hrtimer_on_stack( & timer) |
3458 | Return ret |
Name | Describe |
---|---|
do_futex |
Source code conversion tool public plug-in interface | X |
---|---|
Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion |