2 * SPDX-License-Identifier: BSD-3-Clause
3 * Copyright 2015 Intel Corporation.
4 * Copyright 2012 Hasan Alayli <halayli@gmail.com>
15 #include <sys/types.h>
20 #include <rte_memory.h>
21 #include <rte_cycles.h>
22 #include <rte_per_lcore.h>
23 #include <rte_timer.h>
24 #include <rte_spinlock.h>
27 #include <lthread_api.h>
29 #include "lthread_diag.h"
30 #include "lthread_tls.h"
45 #define BIT(x) (1 << (x))
46 #define CLEARBIT(x) ~(1 << (x))
48 #define POSIX_ERRNO(x) (x)
50 #define MAX_LTHREAD_NAME_SIZE 64
52 #define RTE_LOGTYPE_LTHREAD RTE_LOGTYPE_USER1
55 /* define some shorthand for current scheduler and current thread */
56 #define THIS_SCHED RTE_PER_LCORE(this_sched)
57 #define THIS_LTHREAD RTE_PER_LCORE(this_sched)->current_lthread
60 * Definition of an scheduler struct
62 struct lthread_sched {
63 struct ctx ctx; /* cpu context */
64 uint64_t birth; /* time created */
65 struct lthread *current_lthread; /* running thread */
66 unsigned lcore_id; /* this sched lcore */
67 int run_flag; /* sched shutdown */
68 uint64_t nb_blocked_threads; /* blocked threads */
69 struct lthread_queue *ready; /* local ready queue */
70 struct lthread_queue *pready; /* peer ready queue */
71 struct lthread_objcache *lthread_cache; /* free lthreads */
72 struct lthread_objcache *stack_cache; /* free stacks */
73 struct lthread_objcache *per_lthread_cache; /* free per lthread */
74 struct lthread_objcache *tls_cache; /* free TLS */
75 struct lthread_objcache *cond_cache; /* free cond vars */
76 struct lthread_objcache *mutex_cache; /* free mutexes */
77 struct qnode_pool *qnode_pool; /* pool of queue nodes */
78 struct key_pool *key_pool; /* pool of free TLS keys */
80 uint64_t diag_ref; /* diag ref */
81 } __rte_cache_aligned;
83 RTE_DECLARE_PER_LCORE(struct lthread_sched *, this_sched);
87 * State for an lthread
90 ST_LT_INIT, /* initial state */
91 ST_LT_READY, /* lthread is ready to run */
92 ST_LT_SLEEPING, /* lthread is sleeping */
93 ST_LT_EXPIRED, /* lthread timeout has expired */
94 ST_LT_EXITED, /* lthread has exited and needs cleanup */
95 ST_LT_DETACH, /* lthread frees on exit*/
96 ST_LT_CANCELLED, /* lthread has been cancelled */
100 * lthread sub states for exit/join
103 LT_JOIN_INITIAL, /* initial state */
104 LT_JOIN_EXITING, /* thread is exiting */
105 LT_JOIN_THREAD_SET, /* joining thread has been set */
106 LT_JOIN_EXIT_VAL_SET, /* exiting thread has set ret val */
107 LT_JOIN_EXIT_VAL_READ, /* joining thread has collected ret val */
110 /* defnition of an lthread stack object */
111 struct lthread_stack {
112 uint8_t stack[LTHREAD_MAX_STACK_SIZE];
114 struct lthread_sched *root_sched;
115 } __rte_cache_aligned;
118 * Definition of an lthread
121 struct ctx ctx; /* cpu context */
123 uint64_t state; /* current lthread state */
125 struct lthread_sched *sched; /* current scheduler */
126 void *stack; /* ptr to actual stack */
127 size_t stack_size; /* current stack_size */
128 size_t last_stack_size; /* last yield stack_size */
129 lthread_func_t fun; /* func ctx is running */
130 void *arg; /* func args passed to func */
131 void *per_lthread_data; /* per lthread user data */
132 lthread_exit_func exit_handler; /* called when thread exits */
133 uint64_t birth; /* time lthread was born */
134 struct lthread_queue *pending_wr_queue; /* deferred queue to write */
135 struct lthread *lt_join; /* lthread to join on */
136 uint64_t join; /* state for joining */
137 void **lt_exit_ptr; /* exit ptr for lthread_join */
138 struct lthread_sched *root_sched; /* thread was created here*/
139 struct queue_node *qnode; /* node when in a queue */
140 struct rte_timer tim; /* sleep timer */
141 struct lthread_tls *tls; /* keys in use by the thread */
142 struct lthread_stack *stack_container; /* stack */
143 char funcname[MAX_LTHREAD_NAME_SIZE]; /* thread func name */
144 uint64_t diag_ref; /* ref to user diag data */
145 } __rte_cache_aligned;
151 #endif /* LTHREAD_INT_H */