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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2011-08-01 18:49:16 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2011-08-01 19:11:24 -0300 |
| commit | 36e377da2e521207971f6c6aba60e090e384b843 (patch) | |
| tree | 20c9980a38ed81d0e6b39176cd9421e9ab179b33 | |
| parent | 6b9f411948d84e4cafd439dc1865b99247bfe5ea (diff) | |
| download | python-schedutils-36e377da2e521207971f6c6aba60e090e384b843.tar.gz | |
CPU_ALLOC macros are not present in older systems
So add an implementation from glibc-headers-2.12-1.7.el6.x86_64.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | python-schedutils/schedutils.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/python-schedutils/schedutils.c b/python-schedutils/schedutils.c index a3cbce3..c6cc6fd 100644 --- a/python-schedutils/schedutils.c +++ b/python-schedutils/schedutils.c @@ -7,6 +7,58 @@ #define __unused __attribute__ ((unused)) #endif +#ifndef CPU_ALLOC + +/* From glibc-headers-2.12-1.7.el6.x86_64 */ + +/* Basic access functions. */ +#define __CPUELT(cpu) ((cpu) / __NCPUBITS) +#define __CPUMASK(cpu) ((__cpu_mask) 1 << ((cpu) % __NCPUBITS)) + +#define CPU_ALLOC_SIZE(ncpus) \ + ((((ncpus) + __NCPUBITS - 1) / __NCPUBITS) * sizeof (__cpu_mask)) + +/* 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_FREE(cpus) free(cpus) +#define CPU_ALLOC(ncpus) malloc(CPU_ALLOC_SIZE(ncpus)) + +# 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_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_SET_S(cpu, setsize, cpusetp) __CPU_SET_S (cpu, setsize, cpusetp) +#define CPU_ISSET_S(cpu, setsize, cpusetp) __CPU_ISSET_S (cpu, setsize, cpusetp) +#define CPU_ZERO_S(setsize, cpusetp) __CPU_ZERO_S (setsize, cpusetp) + +#endif /* CPU_ALLOC */ + + #ifndef SCHED_RESET_ON_FORK #define SCHED_RESET_ON_FORK 0x40000000 #endif |