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Diffstat (limited to 'benchmarks/workloads/syscall/syscall.c')
-rw-r--r-- | benchmarks/workloads/syscall/syscall.c | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/benchmarks/workloads/syscall/syscall.c b/benchmarks/workloads/syscall/syscall.c deleted file mode 100644 index ded030397..000000000 --- a/benchmarks/workloads/syscall/syscall.c +++ /dev/null @@ -1,55 +0,0 @@ -// Copyright 2019 Google LLC -// -// 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. - -#define _GNU_SOURCE -#include <stdio.h> -#include <stdlib.h> -#include <sys/syscall.h> -#include <sys/types.h> -#include <time.h> -#include <unistd.h> - -// Short program that calls getpid() a number of times and outputs time -// diference from the MONOTONIC clock. -int main(int argc, char** argv) { - struct timespec start, stop; - long result; - char buf[80]; - - if (argc < 2) { - printf("Usage:./syscall NUM_TIMES_TO_CALL"); - return 1; - } - - if (clock_gettime(CLOCK_MONOTONIC, &start)) return 1; - - long loops = atoi(argv[1]); - for (long i = 0; i < loops; i++) { - syscall(SYS_gettimeofday, 0, 0); - } - - if (clock_gettime(CLOCK_MONOTONIC, &stop)) return 1; - - if ((stop.tv_nsec - start.tv_nsec) < 0) { - result = (stop.tv_sec - start.tv_sec - 1) * 1000; - result += (stop.tv_nsec - start.tv_nsec + 1000000000) / (1000 * 1000); - } else { - result = (stop.tv_sec - start.tv_sec) * 1000; - result += (stop.tv_nsec - start.tv_nsec) / (1000 * 1000); - } - - printf("Called getpid syscall %d times: %lu ms, %lu ns each.\n", loops, - result, result * 1000000 / loops); - - return 0; -} |