/* * Copyright 2011-2015 Samy Al Bahra. * Copyright 2011 David Joseph. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. */ #include #include #include #include #include #include "../../common.h" #ifndef STEPS #define STEPS 30000000 #endif LOCK_DEFINE; int main(void) { CK_CC_UNUSED unsigned int nthr = 1; #ifdef LOCK_INIT LOCK_INIT; #endif #ifdef LOCK_STATE LOCK_STATE; #endif uint64_t s_b, e_b, i; CK_CC_UNUSED int core = 0; s_b = rdtsc(); for (i = 0; i < STEPS; ++i) { #ifdef LOCK LOCK; UNLOCK; LOCK; UNLOCK; LOCK; UNLOCK; LOCK; UNLOCK; #endif } e_b = rdtsc(); printf("%15" PRIu64 "\n", (e_b - s_b) / 4 / STEPS); return (0); }