1 /*- 2 * BSD LICENSE 3 * 4 * Copyright(c) 2015 Intel Corporation. All rights reserved. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of Intel Corporation nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 35 #ifndef LTHREAD_TIMER_H_ 36 #define LTHREAD_TIMER_H_ 37 38 #include "lthread_int.h" 39 #include "lthread_sched.h" 40 41 42 static inline uint64_t 43 _ns_to_clks(uint64_t ns) 44 { 45 unsigned __int128 clkns = rte_get_tsc_hz(); 46 47 clkns *= ns; 48 clkns /= 1000000000; 49 return (uint64_t) clkns; 50 } 51 52 53 static inline void 54 _timer_start(struct lthread *lt, uint64_t clks) 55 { 56 if (clks > 0) { 57 DIAG_EVENT(lt, LT_DIAG_LTHREAD_TMR_START, <->tim, clks); 58 rte_timer_init(<->tim); 59 rte_timer_reset(<->tim, 60 clks, 61 SINGLE, 62 rte_lcore_id(), 63 _sched_timer_cb, 64 (void *)lt); 65 } 66 } 67 68 69 static inline void 70 _timer_stop(struct lthread *lt) 71 { 72 if (lt != NULL) { 73 DIAG_EVENT(lt, LT_DIAG_LTHREAD_TMR_DELETE, <->tim, 0); 74 rte_timer_stop(<->tim); 75 } 76 } 77 78 79 #endif /* LTHREAD_TIMER_H_ */ 80