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35 * Some portions of this software is derived from the
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38 * Copyright (C) 2012, Hasan Alayli <halayli@gmail.com>
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62 #ifndef LTHREAD_SCHED_H_
63 #define LTHREAD_SCHED_H_
69 #include "lthread_int.h"
70 #include "lthread_queue.h"
71 #include "lthread_objcache.h"
72 #include "lthread_diag.h"
76 * insert an lthread into a queue
79 _ready_queue_insert(struct lthread_sched *sched, struct lthread *lt)
81 if (sched == THIS_SCHED)
82 _lthread_queue_insert_sp((THIS_SCHED)->ready, lt);
84 _lthread_queue_insert_mp(sched->pready, lt);
88 * remove an lthread from a queue
90 static inline struct lthread *_ready_queue_remove(struct lthread_queue *q)
92 return _lthread_queue_remove(q);
96 * Return true if the ready queue is empty
98 static inline int _ready_queue_empty(struct lthread_queue *q)
100 return _lthread_queue_empty(q);
103 static inline uint64_t _sched_now(void)
105 uint64_t now = rte_rdtsc();
107 if (now > (THIS_SCHED)->birth)
108 return now - (THIS_SCHED)->birth;
109 if (now < (THIS_SCHED)->birth)
110 return (THIS_SCHED)->birth - now;
111 /* never return 0 because this means sleep forever */
115 static __rte_always_inline void
120 struct lthread *lt = THIS_LTHREAD;
122 DIAG_EVENT(lt, LT_DIAG_LTHREAD_SUSPENDED, 0, 0);
123 ctx_switch(&(THIS_SCHED)->ctx, <->ctx);
126 static __rte_always_inline void
131 struct lthread *lt = THIS_LTHREAD;
133 (THIS_SCHED)->nb_blocked_threads++;
134 DIAG_EVENT(lt, LT_DIAG_LTHREAD_SUSPENDED, 0, 0);
135 ctx_switch(&(THIS_SCHED)->ctx, <->ctx);
136 (THIS_SCHED)->nb_blocked_threads--;
139 static __rte_always_inline void
144 struct lthread *lt = THIS_LTHREAD;
146 DIAG_EVENT(lt, LT_DIAG_LTHREAD_RESCHEDULED, 0, 0);
147 _ready_queue_insert(THIS_SCHED, lt);
148 ctx_switch(&(THIS_SCHED)->ctx, <->ctx);
151 extern struct lthread_sched *schedcore[];
152 void _sched_timer_cb(struct rte_timer *tim, void *arg);
153 void _sched_shutdown(__rte_unused void *arg);
159 #endif /* LTHREAD_SCHED_H_ */