172e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner/* 272e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * Copyright (C) 2010 The Android Open Source Project 372e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * All rights reserved. 472e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * 572e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * Redistribution and use in source and binary forms, with or without 672e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * modification, are permitted provided that the following conditions 772e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * are met: 872e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * * Redistributions of source code must retain the above copyright 972e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * notice, this list of conditions and the following disclaimer. 1072e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * * Redistributions in binary form must reproduce the above copyright 1172e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * notice, this list of conditions and the following disclaimer in 1272e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * the documentation and/or other materials provided with the 1372e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * distribution. 1472e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * 1572e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1672e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1772e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 1872e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 1972e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 2072e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 2172e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 2272e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 2372e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 2472e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 2572e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2672e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner * SUCH DAMAGE. 2772e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner */ 284ca685e36e9d7f53c135eba2b4b8ece152129dbeKito Cheng 2972e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner#define _GNU_SOURCE 1 3072e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner#include <sched.h> 314ca685e36e9d7f53c135eba2b4b8ece152129dbeKito Cheng#include <string.h> 324ca685e36e9d7f53c135eba2b4b8ece152129dbeKito Cheng 334ca685e36e9d7f53c135eba2b4b8ece152129dbeKito Chengextern "C" int __sched_getaffinity(pid_t, size_t, cpu_set_t*); 344ca685e36e9d7f53c135eba2b4b8ece152129dbeKito Cheng 354ca685e36e9d7f53c135eba2b4b8ece152129dbeKito Chengint sched_getaffinity(pid_t pid, size_t set_size, cpu_set_t* set) { 364ca685e36e9d7f53c135eba2b4b8ece152129dbeKito Cheng int rc = __sched_getaffinity(pid, set_size, set); 374ca685e36e9d7f53c135eba2b4b8ece152129dbeKito Cheng if (rc == -1) { 380cfc95e0106acf6e3bff35e28e9addc76b3e0aaaElliott Hughes return -1; 394ca685e36e9d7f53c135eba2b4b8ece152129dbeKito Cheng } 4072e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner 414ca685e36e9d7f53c135eba2b4b8ece152129dbeKito Cheng // Clear any bytes the kernel didn't touch. 424ca685e36e9d7f53c135eba2b4b8ece152129dbeKito Cheng // (The kernel returns the number of bytes written on success.) 434ca685e36e9d7f53c135eba2b4b8ece152129dbeKito Cheng memset(reinterpret_cast<char*>(set) + rc, 0, set_size - rc); 444ca685e36e9d7f53c135eba2b4b8ece152129dbeKito Cheng return 0; 4572e6fd42421dca80fb2776a9185c186d4a04e5f7David 'Digit' Turner} 46