Imported Upstream version 16.04

[deb_dpdk.git] / examples / performance-thread / common / lthread_timer.h

diff --git a/examples/performance-thread/common/lthread_timer.h b/examples/performance-thread/common/lthread_timer.h
new file mode 100644 (file)
index 0000000..b5e6fb0
--- /dev/null
+++ b/examples/performance-thread/common/lthread_timer.h
@@ -0,0 +1,79 @@
+/*-
+ *   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.
+ */
+
+
+#ifndef LTHREAD_TIMER_H_
+#define LTHREAD_TIMER_H_
+
+#include "lthread_int.h"
+#include "lthread_sched.h"
+
+
+static inline uint64_t
+_ns_to_clks(uint64_t ns)
+{
+       unsigned __int128 clkns = rte_get_tsc_hz();
+
+       clkns *= ns;
+       clkns /= 1000000000;
+       return (uint64_t) clkns;
+}
+
+
+static inline void
+_timer_start(struct lthread *lt, uint64_t clks)
+{
+       if (clks > 0) {
+               DIAG_EVENT(lt, LT_DIAG_LTHREAD_TMR_START, &lt->tim, clks);
+               rte_timer_init(&lt->tim);
+               rte_timer_reset(&lt->tim,
+                               clks,
+                               SINGLE,
+                               rte_lcore_id(),
+                               _sched_timer_cb,
+                               (void *)lt);
+       }
+}
+
+
+static inline void
+_timer_stop(struct lthread *lt)
+{
+       if (lt != NULL) {
+               DIAG_EVENT(lt, LT_DIAG_LTHREAD_TMR_DELETE, &lt->tim, 0);
+               rte_timer_stop(&lt->tim);
+       }
+}
+
+
+#endif /* LTHREAD_TIMER_H_ */