diff options
Diffstat (limited to 'libc/sysdeps/linux/common/bits/sched.h')
| -rw-r--r-- | libc/sysdeps/linux/common/bits/sched.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/bits/sched.h b/libc/sysdeps/linux/common/bits/sched.h index 5c10d85d4..baf5b5a2b 100644 --- a/libc/sysdeps/linux/common/bits/sched.h +++ b/libc/sysdeps/linux/common/bits/sched.h @@ -71,3 +71,38 @@ struct __sched_param }; # 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'. */ +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. */ +# define __CPU_ZERO(cpusetp) \ + do { \ + unsigned int __i; \ + cpu_set *__arr = (cpusetp); \ + for (__i = 0; __i < sizeof (cpu_set) / sizeof (__cpu_mask); ++__i) \ + __arr->__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) +#endif |