1 /* Copyright (c) 2012 The Chromium OS Authors. All rights reserved. 2 * Use of this source code is governed by a BSD-style license that can be 3 * found in the LICENSE file. 4 */ 5 6 #include <unistd.h> 7 #include <stdio.h> 8 #include <stdlib.h> 9 #include <sys/prctl.h> 10 #include <pthread.h> 11 #include <errno.h> 12 13 // little crc-like thing, compiler won't optimize it out 14 static int do_something(int seed, unsigned int loops) { 15 int i; 16 for (i = 0; i < loops; i++) { 17 seed ^= i; 18 seed = (seed << 1) ^ (i & 0x80000000 ? 0x04C11DB7 : 0); 19 } 20 return i; 21 } 22 23 24 int main(int argc, char* argv[]) { 25 int loops; 26 char *name; 27 28 if (argc < 3) { 29 fprintf(stderr, "usage: <name> <loops>\n"); 30 return 1; 31 } 32 33 name = argv[1]; 34 loops = strtoul(argv[2], NULL, 10); 35 36 if (prctl(PR_SET_NAME, name) < 0) { 37 perror("prctl(PR_SET_NAME)"); 38 return 1; 39 } 40 do_something(rand(), loops); 41 42 return 0; 43 } 44
