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_TimingLinux.h | 62 +++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100755 libparc/parc/developer/parc_TimingLinux.h (limited to 'libparc/parc/developer/parc_TimingLinux.h') diff --git a/libparc/parc/developer/parc_TimingLinux.h b/libparc/parc/developer/parc_TimingLinux.h new file mode 100755 index 00000000..3dd36205 --- /dev/null +++ b/libparc/parc/developer/parc_TimingLinux.h @@ -0,0 +1,62 @@ +/* + * 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_TimingLinux.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_TimingLinux_h +#define libparc_parc_TimingLinux_h + +#ifdef PARCTIMING_LINUX +#include +#include +#include + +#define _private_parcTiming_Init(prefix) \ + struct timespec prefix ## _ts0, prefix ## _ts1; + +#define _private_parcTiming_Start(prefix) \ + clock_gettime(CLOCK_MONOTONIC_RAW, &(prefix ## _ts0)); + +#define _private_parcTiming_Stop(prefix) \ + clock_gettime(CLOCK_MONOTONIC_RAW, &(prefix ## _ts1)); + +static inline uint64_t +_parcTimingLinux_Delta(const struct timespec *t0, const struct timespec *t1) +{ + struct timespec delta; + + delta.tv_sec = t1->tv_sec - t0->tv_sec; + delta.tv_nsec = t1->tv_nsec - t0->tv_nsec; + if (delta.tv_nsec < 0) { + --delta.tv_sec; + delta.tv_nsec += 1000000000; + } + + return (uint64_t) delta.tv_sec * 1000000000ULL + delta.tv_nsec; +} + +#define _private_parcTiming_Delta(prefix) _parcTimingLinux_Delta(&(prefix ## _ts0), &(prefix ## _ts1)) + +// No teardown work that we need to do +#define _private_parcTiming_Fini(prefix) + +#endif // PARCTIMING_LINUX +#endif // libparc_parc_TimingLinux_h + -- cgit 1.2.3-korg