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* sysdeps/unix/sysv/linux/bits/sched.h (__CPU_ZERO_S): Optimize
using gcc builtin. (__CPU_EQUAL_S): Likewise.
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@ -1,5 +1,9 @@
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2007-07-29 Ulrich Drepper <drepper@redhat.com>
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* sysdeps/unix/sysv/linux/bits/sched.h (__CPU_ZERO_S): Optimize
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using gcc builtin.
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(__CPU_EQUAL_S): Likewise.
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* posix/Makefile (routines): Add sched_cpualloc and sched_cpufree.
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(tests): Add tst-cpuset.
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* posix/sched_cpualloc.c: New file.
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@ -104,7 +104,7 @@ struct __sched_param
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# define __CPU_SETSIZE 1024
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# define __NCPUBITS (8 * sizeof (__cpu_mask))
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/* Type for array elements in 'cpu_set'. */
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/* Type for array elements in 'cpu_set_t'. */
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typedef unsigned long int __cpu_mask;
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/* Basic access functions. */
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@ -118,7 +118,11 @@ typedef struct
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} cpu_set_t;
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/* Access functions for CPU masks. */
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# define __CPU_ZERO_S(setsize, cpusetp) \
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# if __GNUC_PREREQ (2, 91)
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# define __CPU_ZERO_S(setsize, cpusetp) \
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do __builtin_memset (cpusetp, '\0', setsize); while (0)
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# else
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# define __CPU_ZERO_S(setsize, cpusetp) \
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do { \
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size_t __i; \
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size_t __imax = (setsize) / sizeof (__cpu_mask); \
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@ -126,6 +130,7 @@ typedef struct
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for (__i = 0; __i < __imax; ++__i) \
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__arr->__bits[__i] = 0; \
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} while (0)
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# endif
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# define __CPU_SET_S(cpu, setsize, cpusetp) \
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({ size_t __cpu = (cpu); \
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__cpu < 8 * (setsize) \
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@ -142,7 +147,11 @@ typedef struct
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# define __CPU_COUNT_S(setsize, cpusetp) \
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__sched_cpucount (setsize, cpusetp)
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# define __CPU_EQUAL_S(setsize, cpusetp1, cpusetp2) \
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# if __GNUC_PREREQ (2, 91)
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# define __CPU_EQUAL_S(setsize, cpusetp1, cpusetp2) \
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(__builtin_memcmp (cpusetp1, cpusetp2, setsize) == 0)
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# else
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# define __CPU_EQUAL_S(setsize, cpusetp1, cpusetp2) \
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({ cpu_set_t *__arr1 = (cpusetp1); \
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cpu_set_t *__arr2 = (cpusetp2); \
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size_t __imax = (setsize) / sizeof (__cpu_mask); \
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@ -151,6 +160,7 @@ typedef struct
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if (__arr1->__bits[__i] != __arr2->__bits[__i]) \
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break; \
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__i == __imax; })
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# endif
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# define __CPU_OP_S(setsize, destset, srcset1, srcset2, op) \
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({ cpu_set_t *__dest = (destset); \
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