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| -rw-r--r-- | src/isa-l/include/test.h | 285 |
1 files changed, 285 insertions, 0 deletions
diff --git a/src/isa-l/include/test.h b/src/isa-l/include/test.h new file mode 100644 index 000000000..31ccc67b9 --- /dev/null +++ b/src/isa-l/include/test.h @@ -0,0 +1,285 @@ +/********************************************************************** + Copyright(c) 2011-2015 Intel Corporation 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 _TEST_H +#define _TEST_H + +#ifdef __cplusplus +extern "C" { +#endif + +#include <stdio.h> +#include <stdint.h> + +#ifdef _MSC_VER +# define inline __inline +#endif + +/* Decide wether to use benchmark time as an approximation or a minimum. Fewer + * calls to the timer are required for the approximation case.*/ +#define BENCHMARK_MIN_TIME 0 +#define BENCHMARK_APPROX_TIME 1 +#ifndef BENCHMARK_TYPE +#define BENCHMARK_TYPE BENCHMARK_MIN_TIME +#endif + +#ifdef USE_RDTSC +/* The use of rtdsc is nuanced. On many processors it corresponds to a + * standardized clock source. To obtain a meaningful result it may be + * necessary to fix the CPU clock to match the rtdsc tick rate. + */ +# include <inttypes.h> +# include <x86intrin.h> +# define USE_CYCLES +#else +# include <time.h> +#define USE_SECONDS +#endif + +#ifdef USE_RDTSC +#ifndef BENCHMARK_TIME +# define BENCHMARK_TIME 6 +#endif +# define GHZ 1000000000 +# define UNIT_SCALE (GHZ) +# define CALLIBRATE_TIME (UNIT_SCALE / 2) +static inline long long get_time(void) { + unsigned int dummy; + return __rdtscp(&dummy); +} + +static inline long long get_res(void) { + return 1; +} +#else +#ifndef BENCHMARK_TIME +# define BENCHMARK_TIME 3 +#endif +#ifdef _MSC_VER +#define UNIT_SCALE get_res() +#define CALLIBRATE_TIME (UNIT_SCALE / 4) +static inline long long get_time(void) { + long long ret = 0; + QueryPerformanceCounter(&ret); + return ret; +} + +static inline long long get_res(void) { + long long ret = 0; + QueryPerformanceFrequency(&ret); + return ret; +} +#else +# define NANO_SCALE 1000000000 +# define UNIT_SCALE NANO_SCALE +# define CALLIBRATE_TIME (UNIT_SCALE / 4) +#ifdef __FreeBSD__ +# define CLOCK_ID CLOCK_MONOTONIC_PRECISE +#else +# define CLOCK_ID CLOCK_MONOTONIC +#endif + +static inline long long get_time(void) { + struct timespec time; + long long nano_total; + clock_gettime(CLOCK_ID, &time); + nano_total = time.tv_sec; + nano_total *= NANO_SCALE; + nano_total += time.tv_nsec; + return nano_total; +} + +static inline long long get_res(void) { + struct timespec time; + long long nano_total; + clock_getres(CLOCK_ID, &time); + nano_total = time.tv_sec; + nano_total *= NANO_SCALE; + nano_total += time.tv_nsec; + return nano_total; +} +#endif +#endif +struct perf { + long long start; + long long stop; + long long run_total; + long long iterations; +}; + +static inline void perf_init(struct perf *p) { + p->start = 0; + p->stop = 0; + p->run_total = 0; +} + +static inline void perf_continue(struct perf *p) { + p->start = get_time(); +} + +static inline void perf_pause(struct perf *p) { + p->stop = get_time(); + p->run_total = p->run_total + p->stop - p->start; + p->start = p->stop; +} + +static inline void perf_start(struct perf *p) { + perf_init(p); + perf_continue(p); +} + +static inline void perf_stop(struct perf *p) { + perf_pause(p); +} + +static inline double get_time_elapsed(struct perf *p) { + return 1.0 * p->run_total / UNIT_SCALE; +} + +static inline long long get_base_elapsed(struct perf *p) { + return p->run_total; +} + +static inline unsigned long long estimate_perf_iterations(struct perf *p, + unsigned long long runs, + unsigned long long total) { + total = total * runs; + if (get_base_elapsed(p) > 0) + return (total + get_base_elapsed(p) - 1) / get_base_elapsed(p); + else + return (total + get_res() - 1) / get_res(); +} + +#define CALLIBRATE(PERF, FUNC_CALL) { \ + unsigned long long _i, _iter = 1; \ + perf_start(PERF); \ + FUNC_CALL; \ + perf_pause(PERF); \ + \ + while (get_base_elapsed(PERF) < CALLIBRATE_TIME) { \ + _iter = estimate_perf_iterations(PERF, _iter, \ + 2 * CALLIBRATE_TIME); \ + perf_start(PERF); \ + for (_i = 0; _i < _iter; _i++) { \ + FUNC_CALL; \ + } \ + perf_stop(PERF); \ + } \ + (PERF)->iterations=_iter; \ +} + +#define PERFORMANCE_TEST(PERF, RUN_TIME, FUNC_CALL) { \ + unsigned long long _i, _iter = (PERF)->iterations; \ + unsigned long long _run_total = RUN_TIME; \ + _run_total *= UNIT_SCALE; \ + _iter = estimate_perf_iterations(PERF, _iter, _run_total);\ + (PERF)->iterations = 0; \ + perf_start(PERF); \ + for (_i = 0; _i < _iter; _i++) { \ + FUNC_CALL; \ + } \ + perf_pause(PERF); \ + (PERF)->iterations += _iter; \ + \ + if(get_base_elapsed(PERF) < _run_total && \ + BENCHMARK_TYPE == BENCHMARK_MIN_TIME) { \ + _iter = estimate_perf_iterations(PERF, _iter, \ + _run_total - get_base_elapsed(PERF) + \ + (UNIT_SCALE / 16)); \ + perf_continue(PERF); \ + for (_i = 0; _i < _iter; _i++) { \ + FUNC_CALL; \ + } \ + perf_pause(PERF); \ + (PERF)->iterations += _iter; \ + } \ +} + +#define BENCHMARK(PERF, RUN_TIME, FUNC_CALL) { \ + if((RUN_TIME) > 0) { \ + CALLIBRATE(PERF, FUNC_CALL); \ + PERFORMANCE_TEST(PERF, RUN_TIME, FUNC_CALL); \ + \ + } else { \ + (PERF)->iterations = 1; \ + perf_start(PERF); \ + FUNC_CALL; \ + perf_stop(PERF); \ + } \ +} + +#ifdef USE_CYCLES +static inline void perf_print(struct perf p, long long unit_count) { + long long total_units = p.iterations * unit_count; + + printf("runtime = %10lld ticks", get_base_elapsed(&p)); + if (total_units != 0) { + printf(", bandwidth %lld MB in %.4f GC = %.2f ticks/byte", + total_units / (1000000), get_time_elapsed(&p), + get_base_elapsed(&p) / (double)total_units); + } + printf("\n"); +} +#else +static inline void perf_print(struct perf p, double unit_count) { + long long total_units = p.iterations * unit_count; + long long usecs = (long long)(get_time_elapsed(&p) * 1000000); + + printf("runtime = %10lld usecs", usecs); + if (total_units != 0) { + printf(", bandwidth %lld MB in %.4f sec = %.2f MB/s", + total_units / (1000000), get_time_elapsed(&p), + ((double)total_units) / (1000000 * get_time_elapsed(&p))); + } + printf("\n"); +} +#endif + +static inline uint64_t get_filesize(FILE * fp) { + uint64_t file_size; + fpos_t pos, pos_curr; + + fgetpos(fp, &pos_curr); /* Save current position */ +#if defined(_WIN32) || defined(_WIN64) + _fseeki64(fp, 0, SEEK_END); +#else + fseeko(fp, 0, SEEK_END); +#endif + fgetpos(fp, &pos); + file_size = *(uint64_t *) & pos; + fsetpos(fp, &pos_curr); /* Restore position */ + + return file_size; +} + +#ifdef __cplusplus +} +#endif + +#endif // _TEST_H |