?? sharedarray.c
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/* * Shared lib to test different access patterns and sharing * * (c) John Berthels 2005 <jjberthels@gmail.com>. See COPYING for license */#include "sharedarray.h"#include <stdio.h>/* Uninitialised stuff will go into .bss and get special zero-page * treatment */BigArr uninit_donttouch;BigArr uninit_readme;BigArr uninit_writeme;BigArr uninit_readhalf;BigArr uninit_writehalf;BigArr donttouch = { 1 };BigArr readme = { 2 };BigArr writeme = { 3 };BigArr readhalf = { 4 };BigArr writehalf = { 5 };int do_shared_array_work(void){ int i; int sum = 0; for (i = 0; i < ARRAY_SIZE; ++i) { sum += readme[i]; sum += uninit_readme[i]; writeme[i] = i; uninit_writeme[i] = i; } for (i = 0; i < ARRAY_SIZE / 2; ++i) { sum += uninit_readhalf[i]; sum += readhalf[i]; writehalf[i] = i; uninit_writehalf[i] = i; } return 0;}
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