--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2015 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Some portions of this software may have been derived from the
+ * https://github.com/halayli/lthread which carrys the following license.
+ *
+ * Copyright (C) 2012, Hasan Alayli <halayli@gmail.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#ifndef LTHREAD_INT_H
+#include <lthread_api.h>
+#define LTHREAD_INT_H
+
+#include <stdint.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <pthread.h>
+#include <time.h>
+
+#include <rte_cycles.h>
+#include <rte_per_lcore.h>
+#include <rte_timer.h>
+#include <rte_ring.h>
+#include <rte_atomic_64.h>
+#include <rte_spinlock.h>
+#include <ctx.h>
+
+#include <lthread_api.h>
+#include "lthread.h"
+#include "lthread_diag.h"
+#include "lthread_tls.h"
+
+struct lthread;
+struct lthread_sched;
+struct lthread_cond;
+struct lthread_mutex;
+struct lthread_key;
+
+struct key_pool;
+struct qnode;
+struct qnode_pool;
+struct lthread_sched;
+struct lthread_tls;
+
+
+#define BIT(x) (1 << (x))
+#define CLEARBIT(x) ~(1 << (x))
+
+#define POSIX_ERRNO(x) (x)
+
+#define MAX_LTHREAD_NAME_SIZE 64
+
+#define RTE_LOGTYPE_LTHREAD RTE_LOGTYPE_USER1
+
+
+/* define some shorthand for current scheduler and current thread */
+#define THIS_SCHED RTE_PER_LCORE(this_sched)
+#define THIS_LTHREAD RTE_PER_LCORE(this_sched)->current_lthread
+
+/*
+ * Definition of an scheduler struct
+ */
+struct lthread_sched {
+ struct ctx ctx; /* cpu context */
+ uint64_t birth; /* time created */
+ struct lthread *current_lthread; /* running thread */
+ unsigned lcore_id; /* this sched lcore */
+ int run_flag; /* sched shutdown */
+ uint64_t nb_blocked_threads; /* blocked threads */
+ struct lthread_queue *ready; /* local ready queue */
+ struct lthread_queue *pready; /* peer ready queue */
+ struct lthread_objcache *lthread_cache; /* free lthreads */
+ struct lthread_objcache *stack_cache; /* free stacks */
+ struct lthread_objcache *per_lthread_cache; /* free per lthread */
+ struct lthread_objcache *tls_cache; /* free TLS */
+ struct lthread_objcache *cond_cache; /* free cond vars */
+ struct lthread_objcache *mutex_cache; /* free mutexes */
+ struct qnode_pool *qnode_pool; /* pool of queue nodes */
+ struct key_pool *key_pool; /* pool of free TLS keys */
+ size_t stack_size;
+ uint64_t diag_ref; /* diag ref */
+} __rte_cache_aligned;
+
+RTE_DECLARE_PER_LCORE(struct lthread_sched *, this_sched);
+
+
+/*
+ * State for an lthread
+ */
+enum lthread_st {
+ ST_LT_INIT, /* initial state */
+ ST_LT_READY, /* lthread is ready to run */
+ ST_LT_SLEEPING, /* lthread is sleeping */
+ ST_LT_EXPIRED, /* lthread timeout has expired */
+ ST_LT_EXITED, /* lthread has exited and needs cleanup */
+ ST_LT_DETACH, /* lthread frees on exit*/
+ ST_LT_CANCELLED, /* lthread has been cancelled */
+};
+
+/*
+ * lthread sub states for exit/join
+ */
+enum join_st {
+ LT_JOIN_INITIAL, /* initial state */
+ LT_JOIN_EXITING, /* thread is exiting */
+ LT_JOIN_THREAD_SET, /* joining thread has been set */
+ LT_JOIN_EXIT_VAL_SET, /* exiting thread has set ret val */
+ LT_JOIN_EXIT_VAL_READ, /* joining thread has collected ret val */
+};
+
+/* defnition of an lthread stack object */
+struct lthread_stack {
+ uint8_t stack[LTHREAD_MAX_STACK_SIZE];
+ size_t stack_size;
+ struct lthread_sched *root_sched;
+} __rte_cache_aligned;
+
+/*
+ * Definition of an lthread
+ */
+struct lthread {
+ struct ctx ctx; /* cpu context */
+
+ uint64_t state; /* current lthread state */
+
+ struct lthread_sched *sched; /* current scheduler */
+ void *stack; /* ptr to actual stack */
+ size_t stack_size; /* current stack_size */
+ size_t last_stack_size; /* last yield stack_size */
+ lthread_func_t fun; /* func ctx is running */
+ void *arg; /* func args passed to func */
+ void *per_lthread_data; /* per lthread user data */
+ lthread_exit_func exit_handler; /* called when thread exits */
+ uint64_t birth; /* time lthread was born */
+ struct lthread_queue *pending_wr_queue; /* deferred queue to write */
+ struct lthread *lt_join; /* lthread to join on */
+ uint64_t join; /* state for joining */
+ void **lt_exit_ptr; /* exit ptr for lthread_join */
+ struct lthread_sched *root_sched; /* thread was created here*/
+ struct queue_node *qnode; /* node when in a queue */
+ struct rte_timer tim; /* sleep timer */
+ struct lthread_tls *tls; /* keys in use by the thread */
+ struct lthread_stack *stack_container; /* stack */
+ char funcname[MAX_LTHREAD_NAME_SIZE]; /* thread func name */
+ uint64_t diag_ref; /* ref to user diag data */
+} __rte_cache_aligned;
+
+/*
+ * Assert
+ */
+#if LTHREAD_DIAG
+#define LTHREAD_ASSERT(expr) do { \
+ if (!(expr)) \
+ rte_panic("line%d\tassert \"" #expr "\" failed\n", __LINE__);\
+} while (0)
+#else
+#define LTHREAD_ASSERT(expr) do {} while (0)
+#endif
+
+#endif /* LTHREAD_INT_H */
Code Review / deb_dpdk.git / blobdiff