--- /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 is 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_SCHED_H_
+#define LTHREAD_SCHED_H_
+
+#include "lthread_int.h"
+#include "lthread_queue.h"
+#include "lthread_objcache.h"
+#include "lthread_diag.h"
+#include "ctx.h"
+
+/*
+ * insert an lthread into a queue
+ */
+static inline void
+_ready_queue_insert(struct lthread_sched *sched, struct lthread *lt)
+{
+ if (sched == THIS_SCHED)
+ _lthread_queue_insert_sp((THIS_SCHED)->ready, lt);
+ else
+ _lthread_queue_insert_mp(sched->pready, lt);
+}
+
+/*
+ * remove an lthread from a queue
+ */
+static inline struct lthread *_ready_queue_remove(struct lthread_queue *q)
+{
+ return _lthread_queue_remove(q);
+}
+
+/**
+ * Return true if the ready queue is empty
+ */
+static inline int _ready_queue_empty(struct lthread_queue *q)
+{
+ return _lthread_queue_empty(q);
+}
+
+static inline uint64_t _sched_now(void)
+{
+ uint64_t now = rte_rdtsc();
+
+ if (now > (THIS_SCHED)->birth)
+ return now - (THIS_SCHED)->birth;
+ if (now < (THIS_SCHED)->birth)
+ return (THIS_SCHED)->birth - now;
+ /* never return 0 because this means sleep forever */
+ return 1;
+}
+
+static inline void
+_affinitize(void) __attribute__ ((always_inline));
+static inline void
+_affinitize(void)
+{
+ struct lthread *lt = THIS_LTHREAD;
+
+ DIAG_EVENT(lt, LT_DIAG_LTHREAD_SUSPENDED, 0, 0);
+ ctx_switch(&(THIS_SCHED)->ctx, <->ctx);
+}
+
+static inline void
+_suspend(void) __attribute__ ((always_inline));
+static inline void
+_suspend(void)
+{
+ struct lthread *lt = THIS_LTHREAD;
+
+ (THIS_SCHED)->nb_blocked_threads++;
+ DIAG_EVENT(lt, LT_DIAG_LTHREAD_SUSPENDED, 0, 0);
+ ctx_switch(&(THIS_SCHED)->ctx, <->ctx);
+ (THIS_SCHED)->nb_blocked_threads--;
+}
+
+static inline void
+_reschedule(void) __attribute__ ((always_inline));
+static inline void
+_reschedule(void)
+{
+ struct lthread *lt = THIS_LTHREAD;
+
+ DIAG_EVENT(lt, LT_DIAG_LTHREAD_RESCHEDULED, 0, 0);
+ _ready_queue_insert(THIS_SCHED, lt);
+ ctx_switch(&(THIS_SCHED)->ctx, <->ctx);
+}
+
+extern struct lthread_sched *schedcore[];
+void _sched_timer_cb(struct rte_timer *tim, void *arg);
+void _sched_shutdown(__rte_unused void *arg);
+
+
+#endif /* LTHREAD_SCHED_H_ */
Code Review / deb_dpdk.git / blobdiff