1*d8b80295SApple OSS Distributions #ifndef _KERN_MPQUEUE_H 2*d8b80295SApple OSS Distributions #define _KERN_MPQUEUE_H 3*d8b80295SApple OSS Distributions #include <kern/locks.h> 4*d8b80295SApple OSS Distributions 5*d8b80295SApple OSS Distributions __BEGIN_DECLS 6*d8b80295SApple OSS Distributions 7*d8b80295SApple OSS Distributions #ifdef MACH_KERNEL_PRIVATE 8*d8b80295SApple OSS Distributions 9*d8b80295SApple OSS Distributions #include <kern/priority_queue.h> 10*d8b80295SApple OSS Distributions 11*d8b80295SApple OSS Distributions /*----------------------------------------------------------------*/ 12*d8b80295SApple OSS Distributions /* 13*d8b80295SApple OSS Distributions * Define macros for queues with locks. 14*d8b80295SApple OSS Distributions */ 15*d8b80295SApple OSS Distributions struct mpqueue_head { 16*d8b80295SApple OSS Distributions struct queue_entry head; /* header for queue */ 17*d8b80295SApple OSS Distributions struct priority_queue_deadline_min mpq_pqhead; 18*d8b80295SApple OSS Distributions uint64_t earliest_soft_deadline; 19*d8b80295SApple OSS Distributions uint64_t count; 20*d8b80295SApple OSS Distributions lck_ticket_t lock_data; 21*d8b80295SApple OSS Distributions }; 22*d8b80295SApple OSS Distributions 23*d8b80295SApple OSS Distributions typedef struct mpqueue_head mpqueue_head_t; 24*d8b80295SApple OSS Distributions 25*d8b80295SApple OSS Distributions #define mpqueue_init(q, lck_grp, lck_attr) \ 26*d8b80295SApple OSS Distributions MACRO_BEGIN \ 27*d8b80295SApple OSS Distributions queue_init(&(q)->head); \ 28*d8b80295SApple OSS Distributions lck_ticket_init(&(q)->lock_data, lck_grp); \ 29*d8b80295SApple OSS Distributions priority_queue_init(&(q)->mpq_pqhead); \ 30*d8b80295SApple OSS Distributions MACRO_END 31*d8b80295SApple OSS Distributions 32*d8b80295SApple OSS Distributions #define mpenqueue_tail(q, elt) \ 33*d8b80295SApple OSS Distributions MACRO_BEGIN \ 34*d8b80295SApple OSS Distributions lck_ticket_lock(&(q)->lock_data, LCK_GRP_NULL); \ 35*d8b80295SApple OSS Distributions enqueue_tail(&(q)->head, elt); \ 36*d8b80295SApple OSS Distributions lck_ticket_unlock(&(q)->lock_data); \ 37*d8b80295SApple OSS Distributions MACRO_END 38*d8b80295SApple OSS Distributions 39*d8b80295SApple OSS Distributions #define mpdequeue_head(q, elt) \ 40*d8b80295SApple OSS Distributions MACRO_BEGIN \ 41*d8b80295SApple OSS Distributions lck_ticket_lock(&(q)->lock_data, LCK_GRP_NULL); \ 42*d8b80295SApple OSS Distributions if (queue_empty(&(q)->head)) \ 43*d8b80295SApple OSS Distributions *(elt) = 0; \ 44*d8b80295SApple OSS Distributions else \ 45*d8b80295SApple OSS Distributions *(elt) = dequeue_head(&(q)->head); \ 46*d8b80295SApple OSS Distributions lck_ticket_unlock(&(q)->lock_data); \ 47*d8b80295SApple OSS Distributions MACRO_END 48*d8b80295SApple OSS Distributions 49*d8b80295SApple OSS Distributions #endif /* MACH_KERNEL_PRIVATE */ 50*d8b80295SApple OSS Distributions 51*d8b80295SApple OSS Distributions __END_DECLS 52*d8b80295SApple OSS Distributions 53*d8b80295SApple OSS Distributions 54*d8b80295SApple OSS Distributions #endif /* _KERN_QUEUE_H */ 55