1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #pragma once 30 31 /** 32 * @file sys/sysinfo.h 33 * @brief System information. 34 */ 35 36 #include <sys/cdefs.h> 37 #include <linux/kernel.h> 38 39 __BEGIN_DECLS 40 41 /** 42 * [sysinfo(2)](https://man7.org/linux/man-pages/man2/sysinfo.2.html) queries system information. 43 * 44 * Returns 0 on success, and returns -1 and sets `errno` on failure. 45 */ 46 int sysinfo(struct sysinfo* _Nonnull __info); 47 48 /** 49 * [get_nprocs_conf(3)](https://man7.org/linux/man-pages/man3/get_nprocs_conf.3.html) returns 50 * the total number of processors in the system. 51 * 52 * Available since API level 23. 53 * 54 * See also sysconf(). 55 */ 56 57 #if __BIONIC_AVAILABILITY_GUARD(23) 58 int get_nprocs_conf(void) __INTRODUCED_IN(23); 59 60 /** 61 * [get_nprocs(3)](https://man7.org/linux/man-pages/man3/get_nprocs.3.html) returns 62 * the number of processors in the system that are currently on-line. 63 * 64 * Available since API level 23. 65 * 66 * See also sysconf(). 67 */ 68 int get_nprocs(void) __INTRODUCED_IN(23); 69 70 /** 71 * [get_phys_pages(3)](https://man7.org/linux/man-pages/man3/get_phys_pages.3.html) returns 72 * the total number of physical pages in the system. 73 * 74 * Available since API level 23. 75 * 76 * See also sysconf(). 77 */ 78 long get_phys_pages(void) __INTRODUCED_IN(23); 79 80 /** 81 * [get_avphys_pages(3)](https://man7.org/linux/man-pages/man3/get_avphys_pages.3.html) returns 82 * the number of physical pages in the system that are currently available. 83 * 84 * Available since API level 23. 85 * 86 * See also sysconf(). 87 */ 88 long get_avphys_pages(void) __INTRODUCED_IN(23); 89 #endif /* __BIONIC_AVAILABILITY_GUARD(23) */ 90 91 92 __END_DECLS 93