1*043036a2SApple OSS Distributions #ifndef _KERN_MPQUEUE_H 2*043036a2SApple OSS Distributions #define _KERN_MPQUEUE_H 3*043036a2SApple OSS Distributions #include <kern/locks.h> 4*043036a2SApple OSS Distributions 5*043036a2SApple OSS Distributions __BEGIN_DECLS 6*043036a2SApple OSS Distributions 7*043036a2SApple OSS Distributions #ifdef MACH_KERNEL_PRIVATE 8*043036a2SApple OSS Distributions 9*043036a2SApple OSS Distributions #include <kern/priority_queue.h> 10*043036a2SApple OSS Distributions 11*043036a2SApple OSS Distributions /*----------------------------------------------------------------*/ 12*043036a2SApple OSS Distributions /* 13*043036a2SApple OSS Distributions * Define macros for queues with locks. 14*043036a2SApple OSS Distributions */ 15*043036a2SApple OSS Distributions struct mpqueue_head { 16*043036a2SApple OSS Distributions struct queue_entry head; /* header for queue */ 17*043036a2SApple OSS Distributions struct priority_queue_deadline_min mpq_pqhead; 18*043036a2SApple OSS Distributions uint64_t earliest_soft_deadline; 19*043036a2SApple OSS Distributions uint64_t count; 20*043036a2SApple OSS Distributions lck_ticket_t lock_data; 21*043036a2SApple OSS Distributions }; 22*043036a2SApple OSS Distributions 23*043036a2SApple OSS Distributions typedef struct mpqueue_head mpqueue_head_t; 24*043036a2SApple OSS Distributions 25*043036a2SApple OSS Distributions #define mpqueue_init(q, lck_grp, lck_attr) \ 26*043036a2SApple OSS Distributions MACRO_BEGIN \ 27*043036a2SApple OSS Distributions queue_init(&(q)->head); \ 28*043036a2SApple OSS Distributions lck_ticket_init(&(q)->lock_data, lck_grp); \ 29*043036a2SApple OSS Distributions priority_queue_init(&(q)->mpq_pqhead); \ 30*043036a2SApple OSS Distributions MACRO_END 31*043036a2SApple OSS Distributions 32*043036a2SApple OSS Distributions #define mpenqueue_tail(q, elt) \ 33*043036a2SApple OSS Distributions MACRO_BEGIN \ 34*043036a2SApple OSS Distributions lck_ticket_lock(&(q)->lock_data, LCK_GRP_NULL); \ 35*043036a2SApple OSS Distributions enqueue_tail(&(q)->head, elt); \ 36*043036a2SApple OSS Distributions lck_ticket_unlock(&(q)->lock_data); \ 37*043036a2SApple OSS Distributions MACRO_END 38*043036a2SApple OSS Distributions 39*043036a2SApple OSS Distributions #define mpdequeue_head(q, elt) \ 40*043036a2SApple OSS Distributions MACRO_BEGIN \ 41*043036a2SApple OSS Distributions lck_ticket_lock(&(q)->lock_data, LCK_GRP_NULL); \ 42*043036a2SApple OSS Distributions if (queue_empty(&(q)->head)) \ 43*043036a2SApple OSS Distributions *(elt) = 0; \ 44*043036a2SApple OSS Distributions else \ 45*043036a2SApple OSS Distributions *(elt) = dequeue_head(&(q)->head); \ 46*043036a2SApple OSS Distributions lck_ticket_unlock(&(q)->lock_data); \ 47*043036a2SApple OSS Distributions MACRO_END 48*043036a2SApple OSS Distributions 49*043036a2SApple OSS Distributions #endif /* MACH_KERNEL_PRIVATE */ 50*043036a2SApple OSS Distributions 51*043036a2SApple OSS Distributions __END_DECLS 52*043036a2SApple OSS Distributions 53*043036a2SApple OSS Distributions 54*043036a2SApple OSS Distributions #endif /* _KERN_QUEUE_H */ 55