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60 | { |
60 | { |
61 | link_t *l; |
61 | link_t *l; |
62 | timeout_t *h; |
62 | timeout_t *h; |
63 | timeout_handler_t f; |
63 | timeout_handler_t f; |
64 | void *arg; |
64 | void *arg; |
- | 65 | int i; |
|
65 | 66 | ||
66 | /* |
67 | /* |
67 | * To avoid lock ordering problems, |
68 | * To avoid lock ordering problems, |
68 | * run all expired timeouts as you visit them. |
69 | * run all expired timeouts as you visit them. |
69 | */ |
70 | */ |
- | 71 | for (i = 0; i < CPU->missed_clock_ticks; i++) { |
|
70 | spinlock_lock(&CPU->timeoutlock); |
72 | spinlock_lock(&CPU->timeoutlock); |
71 | while ((l = CPU->timeout_active_head.next) != &CPU->timeout_active_head) { |
73 | while ((l = CPU->timeout_active_head.next) != &CPU->timeout_active_head) { |
72 | h = list_get_instance(l, timeout_t, link); |
74 | h = list_get_instance(l, timeout_t, link); |
73 | spinlock_lock(&h->lock); |
75 | spinlock_lock(&h->lock); |
74 | if (h->ticks-- != 0) { |
76 | if (h->ticks-- != 0) { |
75 | spinlock_unlock(&h->lock); |
77 | spinlock_unlock(&h->lock); |
76 | break; |
78 | break; |
77 | } |
79 | } |
78 | list_remove(l); |
80 | list_remove(l); |
79 | f = h->handler; |
81 | f = h->handler; |
80 | arg = h->arg; |
82 | arg = h->arg; |
81 | timeout_reinitialize(h); |
83 | timeout_reinitialize(h); |
82 | spinlock_unlock(&h->lock); |
84 | spinlock_unlock(&h->lock); |
83 | spinlock_unlock(&CPU->timeoutlock); |
85 | spinlock_unlock(&CPU->timeoutlock); |
84 | 86 | ||
85 | f(arg); |
87 | f(arg); |
86 | 88 | ||
87 | spinlock_lock(&CPU->timeoutlock); |
89 | spinlock_lock(&CPU->timeoutlock); |
- | 90 | } |
|
- | 91 | spinlock_unlock(&CPU->timeoutlock); |
|
88 | } |
92 | } |
89 | spinlock_unlock(&CPU->timeoutlock); |
93 | CPU->missed_clock_ticks = 0; |
90 | 94 | ||
91 | /* |
95 | /* |
92 | * Do CPU usage accounting and find out whether to preempt THREAD. |
96 | * Do CPU usage accounting and find out whether to preempt THREAD. |
93 | */ |
97 | */ |
94 | 98 |