1 /* Definitions of constants and data structure for POSIX 1003.1b-1993 2 scheduling interface. 3 Copyright (C) 1996-2022 Free Software Foundation, Inc. 4 This file is part of the GNU C Library. 5 6 The GNU C Library is free software; you can redistribute it and/or 7 modify it under the terms of the GNU Lesser General Public 8 License as published by the Free Software Foundation; either 9 version 2.1 of the License, or (at your option) any later version. 10 11 The GNU C Library is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 Lesser General Public License for more details. 15 16 You should have received a copy of the GNU Lesser General Public 17 License along with the GNU C Library; if not, see 18 <https://www.gnu.org/licenses/>. */ 19 20 #ifndef _BITS_SCHED_H 21 #define _BITS_SCHED_H 1 22 23 #ifndef _SCHED_H 24 # error "Never include <bits/sched.h> directly; use <sched.h> instead." 25 #endif 26 27 /* Scheduling algorithms. */ 28 #define SCHED_OTHER 0 29 #define SCHED_FIFO 1 30 #define SCHED_RR 2 31 #ifdef __USE_GNU 32 # define SCHED_BATCH 3 33 # define SCHED_ISO 4 34 # define SCHED_IDLE 5 35 # define SCHED_DEADLINE 6 36 37 # define SCHED_RESET_ON_FORK 0x40000000 38 #endif 39 40 #ifdef __USE_GNU 41 /* Cloning flags. */ 42 # define CSIGNAL 0x000000ff /* Signal mask to be sent at exit. */ 43 # define CLONE_VM 0x00000100 /* Set if VM shared between processes. */ 44 # define CLONE_FS 0x00000200 /* Set if fs info shared between processes. */ 45 # define CLONE_FILES 0x00000400 /* Set if open files shared between processes. */ 46 # define CLONE_SIGHAND 0x00000800 /* Set if signal handlers shared. */ 47 # define CLONE_PIDFD 0x00001000 /* Set if a pidfd should be placed 48 in parent. */ 49 # define CLONE_PTRACE 0x00002000 /* Set if tracing continues on the child. */ 50 # define CLONE_VFORK 0x00004000 /* Set if the parent wants the child to 51 wake it up on mm_release. */ 52 # define CLONE_PARENT 0x00008000 /* Set if we want to have the same 53 parent as the cloner. */ 54 # define CLONE_THREAD 0x00010000 /* Set to add to same thread group. */ 55 # define CLONE_NEWNS 0x00020000 /* Set to create new namespace. */ 56 # define CLONE_SYSVSEM 0x00040000 /* Set to shared SVID SEM_UNDO semantics. */ 57 # define CLONE_SETTLS 0x00080000 /* Set TLS info. */ 58 # define CLONE_PARENT_SETTID 0x00100000 /* Store TID in userlevel buffer 59 before MM copy. */ 60 # define CLONE_CHILD_CLEARTID 0x00200000 /* Register exit futex and memory 61 location to clear. */ 62 # define CLONE_DETACHED 0x00400000 /* Create clone detached. */ 63 # define CLONE_UNTRACED 0x00800000 /* Set if the tracing process can't 64 force CLONE_PTRACE on this clone. */ 65 # define CLONE_CHILD_SETTID 0x01000000 /* Store TID in userlevel buffer in 66 the child. */ 67 # define CLONE_NEWCGROUP 0x02000000 /* New cgroup namespace. */ 68 # define CLONE_NEWUTS 0x04000000 /* New utsname group. */ 69 # define CLONE_NEWIPC 0x08000000 /* New ipcs. */ 70 # define CLONE_NEWUSER 0x10000000 /* New user namespace. */ 71 # define CLONE_NEWPID 0x20000000 /* New pid namespace. */ 72 # define CLONE_NEWNET 0x40000000 /* New network namespace. */ 73 # define CLONE_IO 0x80000000 /* Clone I/O context. */ 74 75 /* cloning flags intersect with CSIGNAL so can be used only with unshare and 76 clone3 syscalls. */ 77 #define CLONE_NEWTIME 0x00000080 /* New time namespace */ 78 #endif 79 80 #include <bits/types/struct_sched_param.h> 81 82 __BEGIN_DECLS 83 84 #ifdef __USE_GNU 85 /* Clone current process. */ 86 extern int clone (int (*__fn) (void *__arg), void *__child_stack, 87 int __flags, void *__arg, ...) __THROW; 88 89 /* Unshare the specified resources. */ 90 extern int unshare (int __flags) __THROW; 91 92 /* Get index of currently used CPU. */ 93 extern int sched_getcpu (void) __THROW; 94 95 /* Get currently used CPU and NUMA node. */ 96 extern int getcpu (unsigned int *, unsigned int *) __THROW; 97 98 /* Switch process to namespace of type NSTYPE indicated by FD. */ 99 extern int setns (int __fd, int __nstype) __THROW; 100 #endif 101 102 __END_DECLS 103 104 #endif /* bits/sched.h */ 105