From ec688b4723a041044226358bcd4dd6e2da39da49 Mon Sep 17 00:00:00 2001 From: Luca Muscariello Date: Thu, 23 Feb 2017 17:01:02 +0100 Subject: Initial commit: cframework. Longbow and Libparc Change-Id: I90378dbd30da6033b20fb1f829b3b822cf366c59 Signed-off-by: Luca Muscariello --- libparc/parc/developer/parc_TimingDarwin.h | 66 ++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100755 libparc/parc/developer/parc_TimingDarwin.h (limited to 'libparc/parc/developer/parc_TimingDarwin.h') diff --git a/libparc/parc/developer/parc_TimingDarwin.h b/libparc/parc/developer/parc_TimingDarwin.h new file mode 100755 index 00000000..7b2a100e --- /dev/null +++ b/libparc/parc/developer/parc_TimingDarwin.h @@ -0,0 +1,66 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +/** + * @file parc_TimingDarwin.h + * @brief Macros for timing code + * + * On linux will use clock_gettime with the MONOTONIC RAW clock, which does not speed up or slow down based on adj_time(). + * + */ +#ifndef libparc_parc_TimingDarwin_h +#define libparc_parc_TimingDarwin_h + +#ifdef PARCTIMING_DARWIN +#include +#include +#include +#include +#include + +/* + * This allocates the clock service which must be released in the Fini macro + */ +#define _private_parcTiming_Init(prefix) \ + clock_serv_t prefix ## _clockService; \ + mach_timespec_t prefix ## _ts0, prefix ## _ts1; \ + host_get_clock_service(mach_host_self(), SYSTEM_CLOCK, &(prefix ## _clockService)); + +#define _private_parcTiming_Start(prefix) \ + clock_get_time((prefix ## _clockService), &(prefix ## _ts0)); + +#define _private_parcTiming_Stop(prefix) \ + clock_get_time((prefix ## _clockService), &(prefix ## _ts1)); + +static inline uint64_t +_parcTiming_Delta(const mach_timespec_t *t0, const mach_timespec_t *t1) +{ + // SUB_MACH_TIMESPEC(t1, t2) => t1 -= t2 + + mach_timespec_t delta; + memcpy(&delta, t1, sizeof(delta)); + SUB_MACH_TIMESPEC(&delta, t0); + + return (uint64_t) delta.tv_sec * 1000000000ULL + delta.tv_nsec; +} + +#define _private_parcTiming_Delta(prefix) _parcTiming_Delta(&(prefix ## _ts0), &(prefix ## _ts1)) + +#define _private_parcTiming_Fini(prefix) \ + mach_port_deallocate(mach_task_self(), &(prefix ## _clockService)); + +#endif // PARCTIMING_DARWIN +#endif // libparc_parc_TimingDarwin_h + -- cgit 1.2.3-korg