diff options
Diffstat (limited to 'libc/sysdeps/linux/common/bits/sched.h')
| -rw-r--r-- | libc/sysdeps/linux/common/bits/sched.h | 100 |
1 files changed, 84 insertions, 16 deletions
diff --git a/libc/sysdeps/linux/common/bits/sched.h b/libc/sysdeps/linux/common/bits/sched.h index b48a0c874..7d6273fe4 100644 --- a/libc/sysdeps/linux/common/bits/sched.h +++ b/libc/sysdeps/linux/common/bits/sched.h @@ -1,6 +1,7 @@ /* Definitions of constants and data structure for POSIX 1003.1b-1993 scheduling interface. - Copyright (C) 1996-1999,2001-2003,2005,2006 Free Software Foundation, Inc. + Copyright (C) 1996-1999,2001-2003,2005,2006,2007,2008 + 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 @@ -58,7 +59,13 @@ 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. */ +# define CLONE_STOPPED 0x02000000 /* Start in stopped state. */ +# 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. */ @@ -74,10 +81,11 @@ __BEGIN_DECLS extern int clone (int (*__fn) (void *__arg), void *__child_stack, int __flags, void *__arg, ...) __THROW; -#if 0 /* Unshare the specified resources. */ extern int unshare (int __flags) __THROW; -#endif + +/* Get index of currently used CPU. */ +extern int sched_getcpu (void) __THROW; #endif __END_DECLS @@ -102,7 +110,7 @@ struct __sched_param # define __CPU_SETSIZE 1024 # define __NCPUBITS (8 * sizeof (__cpu_mask)) -/* Type for array elements in 'cpu_set'. */ +/* Type for array elements in 'cpu_set_t'. */ typedef unsigned long int __cpu_mask; /* Basic access functions. */ @@ -116,17 +124,77 @@ typedef struct } cpu_set_t; /* Access functions for CPU masks. */ -# define __CPU_ZERO(cpusetp) \ +# define __CPU_ZERO_S(setsize, cpusetp) \ do { \ - unsigned int __i; \ - cpu_set_t *__arr = (cpusetp); \ - for (__i = 0; __i < sizeof (cpu_set_t) / sizeof (__cpu_mask); ++__i) \ - __arr->__bits[__i] = 0; \ + 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) -# define __CPU_SET(cpu, cpusetp) \ - ((cpusetp)->__bits[__CPUELT (cpu)] |= __CPUMASK (cpu)) -# define __CPU_CLR(cpu, cpusetp) \ - ((cpusetp)->__bits[__CPUELT (cpu)] &= ~__CPUMASK (cpu)) -# define __CPU_ISSET(cpu, cpusetp) \ - (((cpusetp)->__bits[__CPUELT (cpu)] & __CPUMASK (cpu)) != 0) +# 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) \ + ? ((((__cpu_mask *) ((cpusetp)->__bits))[__CPUELT (__cpu)] \ + & __CPUMASK (__cpu))) != 0 \ + : 0; })) + +# define __CPU_COUNT_S(setsize, cpusetp) \ + __sched_cpucount (setsize, cpusetp) + +# define __CPU_EQUAL_S(setsize, cpusetp1, cpusetp2) \ + (__extension__ \ + ({ __cpu_mask *__arr1 = (cpusetp1)->__bits; \ + __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; })) + +# define __CPU_OP_S(setsize, destset, srcset1, srcset2, op) \ + (__extension__ \ + ({ cpu_set_t *__dest = (destset); \ + __cpu_mask *__arr1 = (srcset1)->__bits; \ + __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; +#if 0 /* in uClibc we use macros */ +extern cpu_set_t *__sched_cpualloc (size_t __count) __THROW __wur; +extern void __sched_cpufree (cpu_set_t *__set) __THROW; +#else +# define __sched_cpualloc(cnt) ((cpu_set_t *)malloc(__CPU_ALLOC_SIZE(cnt))) +# define __sched_cpufree(__set) free(__set) +#endif +__END_DECLS + #endif |