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- /* Definitions of constants and data structure for POSIX 1003.1b-1993
- scheduling interface.
- Copyright (C) 1996-1999,2001-2003,2005,2006,2007
- 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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
- #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
- #endif
-
- #ifdef __USE_MISC
- /* 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_STOPPED 0x02000000 /* Start in stopped state. */
- #endif
-
- /* The official definition. */
- struct sched_param
- {
- int __sched_priority;
- };
-
- __BEGIN_DECLS
-
- #ifdef __USE_MISC
- /* 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;
- #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 unsigned long int __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_set_t *__arr = (cpusetp); \
- for (__i = 0; __i < __imax; ++__i) \
- __arr->__bits[__i] = 0; \
- } while (0)
- # endif
- # define __CPU_SET_S(cpu, setsize, cpusetp) \
- ({ size_t __cpu = (cpu); \
- __cpu < 8 * (setsize) \
- ? ((cpusetp)->__bits[__CPUELT (__cpu)] |= __CPUMASK (__cpu)) : 0; })
- # define __CPU_CLR_S(cpu, setsize, cpusetp) \
- ({ size_t __cpu = (cpu); \
- __cpu < 8 * (setsize) \
- ? ((cpusetp)->__bits[__CPUELT (__cpu)] &= ~__CPUMASK (__cpu)) : 0; })
- # define __CPU_ISSET_S(cpu, setsize, cpusetp) \
- ({ size_t __cpu = (cpu); \
- __cpu < 8 * (setsize) \
- ? (((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) \
- ({ cpu_set_t *__arr1 = (cpusetp1); \
- cpu_set_t *__arr2 = (cpusetp2); \
- size_t __imax = (setsize) / sizeof (__cpu_mask); \
- size_t __i; \
- for (__i = 0; __i < __imax; ++__i) \
- if (__arr1->__bits[__i] != __arr2->__bits[__i]) \
- break; \
- __i == __imax; })
- # endif
-
- # define __CPU_OP_S(setsize, destset, srcset1, srcset2, op) \
- ({ cpu_set_t *__dest = (destset); \
- cpu_set_t *__arr1 = (srcset1); \
- cpu_set_t *__arr2 = (srcset2); \
- size_t __imax = (setsize) / sizeof (__cpu_mask); \
- size_t __i; \
- for (__i = 0; __i < __imax; ++__i) \
- __dest->__bits[__i] = __arr1->__bits[__i] op __arr2->__bits[__i]; \
- __dest; })
-
- # define __CPU_ALLOC_SIZE(count) \
- ((((count) + __NCPUBITS - 1) / __NCPUBITS) * 8)
- # 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
-