Function report |
Source Code:kernel\futex.c |
Create Date:2022-07-28 10:54:30 |
Last Modify:2020-03-17 15:28:32 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:ex_wait_setup() - Prepare to wait on a futex*@uaddr: the futex userspace address*@val: the expected value*@flags: futex flags (FLAGS_SHARED, etc.)*@q: the associated futex_q*@hb: storage for hash_bucket pointer to be returned to caller
Proto:static int futex_wait_setup(unsigned int __user *uaddr, unsigned int val, unsigned int flags, struct futex_q *q, struct futex_hash_bucket **hb)
Type:int
Parameter:
Type | Parameter | Name |
---|---|---|
unsigned int __user * | uaddr | |
unsigned int | val | |
unsigned int | flags | |
struct futex_q * | q | |
struct futex_hash_bucket ** | hb |
2751 | retry : |
2753 | If Value for the false possibility is greater at compile time(ret != 0) Then Return ret |
2756 | retry_private : |
2759 | ret = get_futex_value_locked( & uval, uaddr) |
2761 | If ret Then |
2762 | queue_unlock( * hb) |
2768 | If Not (flags & Futex flags used to encode options to functions and preserve them across* restarts.) Then Go to retry_private |
2771 | put_futex_key( & key) |
2772 | Go to retry |
2776 | queue_unlock( * hb) |
2777 | ret = -EWOULDBLOCK |
2780 | out : |
2781 | If ret Then put_futex_key( & key) |
2783 | Return ret |
Name | Describe |
---|---|
futex_wait | |
futex_wait_requeue_pi | 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 |
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