diff options
Diffstat (limited to 'REORG.TODO/sysdeps/unix/sysv/linux/bits/sched.h')
| -rw-r--r-- | REORG.TODO/sysdeps/unix/sysv/linux/bits/sched.h | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/bits/sched.h b/REORG.TODO/sysdeps/unix/sysv/linux/bits/sched.h new file mode 100644 index 0000000000..cc0d698f34 --- /dev/null +++ b/REORG.TODO/sysdeps/unix/sysv/linux/bits/sched.h @@ -0,0 +1,211 @@ +/* Definitions of constants and data structure for POSIX 1003.1b-1993 + scheduling interface. + Copyright (C) 1996-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#ifndef __need_schedparam + +#ifndef _SCHED_H +# error "Never include <bits/sched.h> directly; use <sched.h> instead." +#endif + + +/* Scheduling algorithms. */ +#define SCHED_OTHER 0 +#define SCHED_FIFO 1 +#define SCHED_RR 2 +#ifdef __USE_GNU +# define SCHED_BATCH 3 +# define SCHED_IDLE 5 + +# define SCHED_RESET_ON_FORK 0x40000000 +#endif + +#ifdef __USE_GNU +/* Cloning flags. */ +# define CSIGNAL 0x000000ff /* Signal mask to be sent at exit. */ +# define CLONE_VM 0x00000100 /* Set if VM shared between processes. */ +# define CLONE_FS 0x00000200 /* Set if fs info shared between processes. */ +# define CLONE_FILES 0x00000400 /* Set if open files shared between processes. */ +# define CLONE_SIGHAND 0x00000800 /* Set if signal handlers shared. */ +# define CLONE_PTRACE 0x00002000 /* Set if tracing continues on the child. */ +# define CLONE_VFORK 0x00004000 /* Set if the parent wants the child to + wake it up on mm_release. */ +# define CLONE_PARENT 0x00008000 /* Set if we want to have the same + parent as the cloner. */ +# define CLONE_THREAD 0x00010000 /* Set to add to same thread group. */ +# define CLONE_NEWNS 0x00020000 /* Set to create new namespace. */ +# define CLONE_SYSVSEM 0x00040000 /* Set to shared SVID SEM_UNDO semantics. */ +# define CLONE_SETTLS 0x00080000 /* Set TLS info. */ +# define CLONE_PARENT_SETTID 0x00100000 /* Store TID in userlevel buffer + before MM copy. */ +# define CLONE_CHILD_CLEARTID 0x00200000 /* Register exit futex and memory + location to clear. */ +# define CLONE_DETACHED 0x00400000 /* Create clone detached. */ +# define CLONE_UNTRACED 0x00800000 /* Set if the tracing process can't + force CLONE_PTRACE on this clone. */ +# define CLONE_CHILD_SETTID 0x01000000 /* Store TID in userlevel buffer in + the child. */ +# define CLONE_NEWCGROUP 0x02000000 /* New cgroup namespace. */ +# define CLONE_NEWUTS 0x04000000 /* New utsname group. */ +# define CLONE_NEWIPC 0x08000000 /* New ipcs. */ +# define CLONE_NEWUSER 0x10000000 /* New user namespace. */ +# define CLONE_NEWPID 0x20000000 /* New pid namespace. */ +# define CLONE_NEWNET 0x40000000 /* New network namespace. */ +# define CLONE_IO 0x80000000 /* Clone I/O context. */ +#endif + +/* The official definition. */ +struct sched_param + { + int __sched_priority; + }; + +__BEGIN_DECLS + +#ifdef __USE_GNU +/* Clone current process. */ +extern int clone (int (*__fn) (void *__arg), void *__child_stack, + int __flags, void *__arg, ...) __THROW; + +/* Unshare the specified resources. */ +extern int unshare (int __flags) __THROW; + +/* Get index of currently used CPU. */ +extern int sched_getcpu (void) __THROW; + +/* Switch process to namespace of type NSTYPE indicated by FD. */ +extern int setns (int __fd, int __nstype) __THROW; +#endif + + +__END_DECLS + +#endif /* need schedparam */ + +#if !defined __defined_schedparam \ + && (defined __need_schedparam || defined _SCHED_H) +# define __defined_schedparam 1 +/* Data structure to describe a process' schedulability. */ +struct __sched_param + { + int __sched_priority; + }; +# undef __need_schedparam +#endif + + +#if defined _SCHED_H && !defined __cpu_set_t_defined +# define __cpu_set_t_defined +/* Size definition for CPU sets. */ +# define __CPU_SETSIZE 1024 +# define __NCPUBITS (8 * sizeof (__cpu_mask)) + +/* Type for array elements in 'cpu_set_t'. */ +typedef __CPU_MASK_TYPE __cpu_mask; + +/* Basic access functions. */ +# define __CPUELT(cpu) ((cpu) / __NCPUBITS) +# define __CPUMASK(cpu) ((__cpu_mask) 1 << ((cpu) % __NCPUBITS)) + +/* Data structure to describe CPU mask. */ +typedef struct +{ + __cpu_mask __bits[__CPU_SETSIZE / __NCPUBITS]; +} cpu_set_t; + +/* Access functions for CPU masks. */ +# if __GNUC_PREREQ (2, 91) +# define __CPU_ZERO_S(setsize, cpusetp) \ + do __builtin_memset (cpusetp, '\0', setsize); while (0) +# else +# define __CPU_ZERO_S(setsize, cpusetp) \ + do { \ + size_t __i; \ + size_t __imax = (setsize) / sizeof (__cpu_mask); \ + __cpu_mask *__bits = (cpusetp)->__bits; \ + for (__i = 0; __i < __imax; ++__i) \ + __bits[__i] = 0; \ + } while (0) +# endif +# define __CPU_SET_S(cpu, setsize, cpusetp) \ + (__extension__ \ + ({ size_t __cpu = (cpu); \ + __cpu / 8 < (setsize) \ + ? (((__cpu_mask *) ((cpusetp)->__bits))[__CPUELT (__cpu)] \ + |= __CPUMASK (__cpu)) \ + : 0; })) +# define __CPU_CLR_S(cpu, setsize, cpusetp) \ + (__extension__ \ + ({ size_t __cpu = (cpu); \ + __cpu / 8 < (setsize) \ + ? (((__cpu_mask *) ((cpusetp)->__bits))[__CPUELT (__cpu)] \ + &= ~__CPUMASK (__cpu)) \ + : 0; })) +# define __CPU_ISSET_S(cpu, setsize, cpusetp) \ + (__extension__ \ + ({ size_t __cpu = (cpu); \ + __cpu / 8 < (setsize) \ + ? ((((const __cpu_mask *) ((cpusetp)->__bits))[__CPUELT (__cpu)] \ + & __CPUMASK (__cpu))) != 0 \ + : 0; })) + +# define __CPU_COUNT_S(setsize, cpusetp) \ + __sched_cpucount (setsize, cpusetp) + +# if __GNUC_PREREQ (2, 91) +# define __CPU_EQUAL_S(setsize, cpusetp1, cpusetp2) \ + (__builtin_memcmp (cpusetp1, cpusetp2, setsize) == 0) +# else +# define __CPU_EQUAL_S(setsize, cpusetp1, cpusetp2) \ + (__extension__ \ + ({ const __cpu_mask *__arr1 = (cpusetp1)->__bits; \ + const __cpu_mask *__arr2 = (cpusetp2)->__bits; \ + size_t __imax = (setsize) / sizeof (__cpu_mask); \ + size_t __i; \ + for (__i = 0; __i < __imax; ++__i) \ + if (__arr1[__i] != __arr2[__i]) \ + break; \ + __i == __imax; })) +# endif + +# define __CPU_OP_S(setsize, destset, srcset1, srcset2, op) \ + (__extension__ \ + ({ cpu_set_t *__dest = (destset); \ + const __cpu_mask *__arr1 = (srcset1)->__bits; \ + const __cpu_mask *__arr2 = (srcset2)->__bits; \ + size_t __imax = (setsize) / sizeof (__cpu_mask); \ + size_t __i; \ + for (__i = 0; __i < __imax; ++__i) \ + ((__cpu_mask *) __dest->__bits)[__i] = __arr1[__i] op __arr2[__i]; \ + __dest; })) + +# define __CPU_ALLOC_SIZE(count) \ + ((((count) + __NCPUBITS - 1) / __NCPUBITS) * sizeof (__cpu_mask)) +# define __CPU_ALLOC(count) __sched_cpualloc (count) +# define __CPU_FREE(cpuset) __sched_cpufree (cpuset) + +__BEGIN_DECLS + +extern int __sched_cpucount (size_t __setsize, const cpu_set_t *__setp) + __THROW; +extern cpu_set_t *__sched_cpualloc (size_t __count) __THROW __wur; +extern void __sched_cpufree (cpu_set_t *__set) __THROW; + +__END_DECLS + +#endif |