mirror of
https://github.com/clearlinux/graphene.git
synced 2026-09-08 06:41:58 +00:00
Chia-Che Tsai
1a1e199c79
Release of Graphene SGX: Supporting native Linux application in Intel SGX enclaves. Most applications are supported. Some features may still be buggy. Improving portability of Graphene: Eliminating GCC-ism of the host-generic code. Easier to port to non-Posix platform (e.g., Windows without Cygwin).
49 lines
1.2 KiB
C
49 lines
1.2 KiB
C
/* -*- mode:c; c-file-style:"k&r"; c-basic-offset: 4; tab-width:4; indent-tabs-mode:nil; mode:auto-fill; fill-column:78; -*- */
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/* vim: set ts=4 sw=4 et tw=78 fo=cqt wm=0: */
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#include <stdlib.h>
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#include <stdio.h>
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#include <sys/time.h>
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#include <math.h>
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#include <pthread.h>
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#define OVERHEAD_TIMES 30000
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double my_sqrt(double num)
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{
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return sqrt(num);
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}
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pthread_t my_pthread_self(void)
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{
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return pthread_self();
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}
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int main (int argc, char ** argv, char ** envp)
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{
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struct timeval tv;
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gettimeofday(&tv, NULL);
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if (argc < 2)
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return -1;
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unsigned long long msec1 = atoll(argv[1]);
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unsigned long long msec2 = tv.tv_sec * 1000000ULL + tv.tv_usec;
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struct timeval tv1, tv2;
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gettimeofday(&tv1, NULL);
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for (int j = 0 ; j < OVERHEAD_TIMES ; j++)
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gettimeofday(&tv, NULL);
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gettimeofday(&tv2, NULL);
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unsigned long long msec3 = tv1.tv_sec * 1000000ULL + tv1.tv_usec;
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unsigned long long msec4 = tv2.tv_sec * 1000000ULL + tv2.tv_usec;
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unsigned long long overhead = (msec4 - msec3) / OVERHEAD_TIMES;
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printf("%llu\n", msec2 - msec1 - overhead);
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my_sqrt(1.0);
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my_sqrt(2.0);
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my_pthread_self();
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return 0;
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}
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