1*2c2f96dcSApple OSS Distributions #ifndef _KERN_MPQUEUE_H 2*2c2f96dcSApple OSS Distributions #define _KERN_MPQUEUE_H 3*2c2f96dcSApple OSS Distributions #include <kern/locks.h> 4*2c2f96dcSApple OSS Distributions 5*2c2f96dcSApple OSS Distributions __BEGIN_DECLS 6*2c2f96dcSApple OSS Distributions 7*2c2f96dcSApple OSS Distributions #ifdef MACH_KERNEL_PRIVATE 8*2c2f96dcSApple OSS Distributions 9*2c2f96dcSApple OSS Distributions #include <kern/priority_queue.h> 10*2c2f96dcSApple OSS Distributions 11*2c2f96dcSApple OSS Distributions /*----------------------------------------------------------------*/ 12*2c2f96dcSApple OSS Distributions /* 13*2c2f96dcSApple OSS Distributions * Define macros for queues with locks. 14*2c2f96dcSApple OSS Distributions */ 15*2c2f96dcSApple OSS Distributions struct mpqueue_head { 16*2c2f96dcSApple OSS Distributions struct queue_entry head; /* header for queue */ 17*2c2f96dcSApple OSS Distributions struct priority_queue_deadline_min mpq_pqhead; 18*2c2f96dcSApple OSS Distributions uint64_t earliest_soft_deadline; 19*2c2f96dcSApple OSS Distributions uint64_t count; 20*2c2f96dcSApple OSS Distributions lck_ticket_t lock_data; 21*2c2f96dcSApple OSS Distributions }; 22*2c2f96dcSApple OSS Distributions 23*2c2f96dcSApple OSS Distributions typedef struct mpqueue_head mpqueue_head_t; 24*2c2f96dcSApple OSS Distributions 25*2c2f96dcSApple OSS Distributions #define mpqueue_init(q, lck_grp, lck_attr) \ 26*2c2f96dcSApple OSS Distributions MACRO_BEGIN \ 27*2c2f96dcSApple OSS Distributions queue_init(&(q)->head); \ 28*2c2f96dcSApple OSS Distributions lck_ticket_init(&(q)->lock_data, lck_grp); \ 29*2c2f96dcSApple OSS Distributions priority_queue_init(&(q)->mpq_pqhead); \ 30*2c2f96dcSApple OSS Distributions MACRO_END 31*2c2f96dcSApple OSS Distributions 32*2c2f96dcSApple OSS Distributions #define mpenqueue_tail(q, elt) \ 33*2c2f96dcSApple OSS Distributions MACRO_BEGIN \ 34*2c2f96dcSApple OSS Distributions lck_ticket_lock(&(q)->lock_data, LCK_GRP_NULL); \ 35*2c2f96dcSApple OSS Distributions enqueue_tail(&(q)->head, elt); \ 36*2c2f96dcSApple OSS Distributions lck_ticket_unlock(&(q)->lock_data); \ 37*2c2f96dcSApple OSS Distributions MACRO_END 38*2c2f96dcSApple OSS Distributions 39*2c2f96dcSApple OSS Distributions #define mpdequeue_head(q, elt) \ 40*2c2f96dcSApple OSS Distributions MACRO_BEGIN \ 41*2c2f96dcSApple OSS Distributions lck_ticket_lock(&(q)->lock_data, LCK_GRP_NULL); \ 42*2c2f96dcSApple OSS Distributions if (queue_empty(&(q)->head)) \ 43*2c2f96dcSApple OSS Distributions *(elt) = 0; \ 44*2c2f96dcSApple OSS Distributions else \ 45*2c2f96dcSApple OSS Distributions *(elt) = dequeue_head(&(q)->head); \ 46*2c2f96dcSApple OSS Distributions lck_ticket_unlock(&(q)->lock_data); \ 47*2c2f96dcSApple OSS Distributions MACRO_END 48*2c2f96dcSApple OSS Distributions 49*2c2f96dcSApple OSS Distributions #endif /* MACH_KERNEL_PRIVATE */ 50*2c2f96dcSApple OSS Distributions 51*2c2f96dcSApple OSS Distributions __END_DECLS 52*2c2f96dcSApple OSS Distributions 53*2c2f96dcSApple OSS Distributions 54*2c2f96dcSApple OSS Distributions #endif /* _KERN_QUEUE_H */ 55