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354 lines
13 KiB
C
354 lines
13 KiB
C
/**********************************************************************
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Copyright(c) 2011-2015 Intel Corporation All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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* Neither the name of Intel Corporation nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**********************************************************************/
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#ifndef _TEST_H
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#define _TEST_H
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/**
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* @file test.h
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* @brief Test helper include for common perf and test macros
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*
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* This is a helper file to enable short and simple tests. Not intended for use
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* in library functions or production. Includes helper routines for alignment,
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* benchmark timing, and filesize.
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdio.h>
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#include <stdint.h>
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#ifdef _MSC_VER
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#define inline __inline
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#endif
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/* Make os-independent alignment attribute, alloc and free. */
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#if defined __unix__ || defined __APPLE__
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#define DECLARE_ALIGNED(decl, alignval) decl __attribute__((aligned(alignval)))
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#define __forceinline static inline
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#define aligned_free(x) free(x)
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#else
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#ifdef __MINGW32__
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#define DECLARE_ALIGNED(decl, alignval) decl __attribute__((aligned(alignval)))
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#define posix_memalign(p, algn, len) \
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(NULL == (*((char **) (p)) = (void *) _aligned_malloc(len, algn)))
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#define aligned_free(x) _aligned_free(x)
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#else
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#define DECLARE_ALIGNED(decl, alignval) __declspec(align(alignval)) decl
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#define posix_memalign(p, algn, len) \
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(NULL == (*((char **) (p)) = (void *) _aligned_malloc(len, algn)))
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#define aligned_free(x) _aligned_free(x)
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#endif
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#endif
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#ifdef DEBUG
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#define DEBUG_PRINT(x) printf x
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#else
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#define DEBUG_PRINT(x) \
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do { \
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} while (0)
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#endif
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/* Decide whether to use benchmark time as an approximation or a minimum. Fewer
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* calls to the timer are required for the approximation case.*/
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#define BENCHMARK_MIN_TIME 0
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#define BENCHMARK_APPROX_TIME 1
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#ifndef BENCHMARK_TYPE
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#define BENCHMARK_TYPE BENCHMARK_MIN_TIME
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#endif
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#ifdef USE_RDTSC
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/* The use of rtdsc is nuanced. On many processors it corresponds to a
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* standardized clock source. To obtain a meaningful result it may be
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* necessary to fix the CPU clock to match the rtdsc tick rate.
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*/
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#include <inttypes.h>
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#include <x86intrin.h>
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#define USE_CYCLES
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#else
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#include <time.h>
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#define USE_SECONDS
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#endif
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#ifdef USE_RDTSC
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#ifndef BENCHMARK_TIME
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#define BENCHMARK_TIME 6
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#endif
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#define GHZ 1000000000
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#define UNIT_SCALE (GHZ)
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#define CALIBRATE_TIME (UNIT_SCALE / 2)
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static inline long long
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get_time(void)
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{
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unsigned int dummy;
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return __rdtscp(&dummy);
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}
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static inline long long
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get_res(void)
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{
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return 1;
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}
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#else
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#ifndef BENCHMARK_TIME
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#define BENCHMARK_TIME 3
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#endif
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#ifdef _MSC_VER
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#define UNIT_SCALE get_res()
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#define CALIBRATE_TIME (UNIT_SCALE / 4)
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static inline long long
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get_time(void)
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{
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long long ret = 0;
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QueryPerformanceCounter(&ret);
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return ret;
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}
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static inline long long
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get_res(void)
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{
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long long ret = 0;
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QueryPerformanceFrequency(&ret);
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return ret;
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}
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#else
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#define NANO_SCALE 1000000000
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#define UNIT_SCALE NANO_SCALE
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#define CALIBRATE_TIME (UNIT_SCALE / 4)
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#ifdef __FreeBSD__
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#define CLOCK_ID CLOCK_MONOTONIC_PRECISE
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#else
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#define CLOCK_ID CLOCK_MONOTONIC
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#endif
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static inline long long
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get_time(void)
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{
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struct timespec time;
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long long nano_total;
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clock_gettime(CLOCK_ID, &time);
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nano_total = time.tv_sec;
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nano_total *= NANO_SCALE;
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nano_total += time.tv_nsec;
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return nano_total;
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}
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static inline long long
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get_res(void)
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{
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struct timespec time;
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long long nano_total;
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clock_getres(CLOCK_ID, &time);
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nano_total = time.tv_sec;
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nano_total *= NANO_SCALE;
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nano_total += time.tv_nsec;
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return nano_total;
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}
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#endif
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#endif
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struct perf {
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long long start;
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long long stop;
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long long run_total;
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long long iterations;
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};
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static inline void
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perf_init(struct perf *p)
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{
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p->start = 0;
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p->stop = 0;
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p->run_total = 0;
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}
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static inline void
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perf_continue(struct perf *p)
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{
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p->start = get_time();
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}
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static inline void
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perf_pause(struct perf *p)
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{
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p->stop = get_time();
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p->run_total = p->run_total + p->stop - p->start;
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p->start = p->stop;
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}
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static inline void
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perf_start(struct perf *p)
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{
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perf_init(p);
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perf_continue(p);
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}
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static inline void
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perf_stop(struct perf *p)
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{
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perf_pause(p);
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}
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static inline double
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get_time_elapsed(struct perf *p)
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{
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return 1.0 * p->run_total / UNIT_SCALE;
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}
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static inline long long
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get_base_elapsed(struct perf *p)
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{
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return p->run_total;
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}
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static inline unsigned long long
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estimate_perf_iterations(struct perf *p, unsigned long long runs, unsigned long long total)
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{
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total = total * runs;
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if (get_base_elapsed(p) > 0)
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return (total + get_base_elapsed(p) - 1) / get_base_elapsed(p);
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else
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return (total + get_res() - 1) / get_res();
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}
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#define CALIBRATE(PERF, FUNC_CALL) \
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{ \
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unsigned long long _i, _iter = 1; \
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perf_start(PERF); \
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FUNC_CALL; \
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perf_pause(PERF); \
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\
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while (get_base_elapsed(PERF) < CALIBRATE_TIME) { \
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_iter = estimate_perf_iterations(PERF, _iter, 2 * CALIBRATE_TIME); \
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perf_start(PERF); \
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for (_i = 0; _i < _iter; _i++) { \
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FUNC_CALL; \
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} \
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perf_stop(PERF); \
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} \
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(PERF)->iterations = _iter; \
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}
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#define PERFORMANCE_TEST(PERF, RUN_TIME, FUNC_CALL) \
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{ \
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unsigned long long _i, _iter = (PERF)->iterations; \
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unsigned long long _run_total = RUN_TIME; \
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_run_total *= UNIT_SCALE; \
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_iter = estimate_perf_iterations(PERF, _iter, _run_total); \
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(PERF)->iterations = 0; \
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perf_start(PERF); \
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for (_i = 0; _i < _iter; _i++) { \
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FUNC_CALL; \
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} \
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perf_pause(PERF); \
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(PERF)->iterations += _iter; \
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\
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if (get_base_elapsed(PERF) < _run_total && BENCHMARK_TYPE == BENCHMARK_MIN_TIME) { \
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_iter = estimate_perf_iterations(PERF, _iter, \
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_run_total - get_base_elapsed(PERF) + \
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(UNIT_SCALE / 16)); \
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perf_continue(PERF); \
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for (_i = 0; _i < _iter; _i++) { \
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FUNC_CALL; \
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} \
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perf_pause(PERF); \
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(PERF)->iterations += _iter; \
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} \
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}
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#define BENCHMARK(PERF, RUN_TIME, FUNC_CALL) \
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{ \
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if ((RUN_TIME) > 0) { \
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CALIBRATE(PERF, FUNC_CALL); \
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PERFORMANCE_TEST(PERF, RUN_TIME, FUNC_CALL); \
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\
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} else { \
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(PERF)->iterations = 1; \
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perf_start(PERF); \
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FUNC_CALL; \
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perf_stop(PERF); \
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} \
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}
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#ifdef USE_CYCLES
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static inline void
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perf_print(struct perf p, long long unit_count)
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{
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long long total_units = p.iterations * unit_count;
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printf("runtime = %10lld ticks", get_base_elapsed(&p));
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if (total_units != 0) {
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printf(", bandwidth %lld MB in %.4f GC = %.2f ticks/byte", total_units / (1000000),
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get_time_elapsed(&p), get_base_elapsed(&p) / (double) total_units);
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}
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printf("\n");
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}
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#else
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static inline void
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perf_print(struct perf p, double unit_count)
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{
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long long total_units = p.iterations * unit_count;
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long long usecs = (long long) (get_time_elapsed(&p) * 1000000);
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printf("runtime = %10lld usecs", usecs);
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if (total_units != 0) {
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printf(", bandwidth %lld MB in %.4f sec = %.2f MB/s", total_units / (1000000),
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get_time_elapsed(&p),
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((double) total_units) / (1000000 * get_time_elapsed(&p)));
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}
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printf("\n");
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}
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#endif
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static inline uint64_t
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get_filesize(FILE *fp)
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{
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uint64_t file_size;
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fpos_t pos, pos_curr;
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fgetpos(fp, &pos_curr); /* Save current position */
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#if defined(_WIN32) || defined(_WIN64)
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_fseeki64(fp, 0, SEEK_END);
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#else
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fseeko(fp, 0, SEEK_END);
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#endif
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fgetpos(fp, &pos);
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file_size = *(uint64_t *) &pos;
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fsetpos(fp, &pos_curr); /* Restore position */
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return file_size;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif // _TEST_H
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