Imported Upstream version 16.04

Change-Id: I77eadcd8538a9122e4773cbe55b24033dc451757
Signed-off-by: C.J. Collier <cjcollier@linuxfoundation.org>

1 files changed, 212 insertions, 0 deletions

diff --git a/examples/performance-thread/common/lthread_int.h b/examples/performance-thread/common/lthread_int.h
new file mode 100644
index 00000000..c8357f4a
--- /dev/null
+++ b/examples/performance-thread/common/lthread_int.h
@@ -0,0 +1,212 @@
+/*-
+ *   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 */