diff options
Diffstat (limited to 'libstdc++-v3/src/thread.cc')
| -rw-r--r-- | libstdc++-v3/src/thread.cc | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/libstdc++-v3/src/thread.cc b/libstdc++-v3/src/thread.cc index 09e7fc5909d..ff034b16143 100644 --- a/libstdc++-v3/src/thread.cc +++ b/libstdc++-v3/src/thread.cc @@ -30,9 +30,27 @@ #if defined(_GLIBCXX_USE_GET_NPROCS) # include <sys/sysinfo.h> # define _GLIBCXX_NPROCS get_nprocs() +#elif defined(_GLIBCXX_USE_PTHREADS_NUM_PROCESSORS_NP) +# define _GLIBCXX_NPROCS pthread_num_processors_np() +#elif defined(_GLIBCXX_USE_SYSCTL_HW_NCPU) +# include <stddef.h> +# include <sys/sysctl.h> +static inline int get_nprocs() +{ + int count; + size_t size = sizeof(count); + int mib[] = { CTL_HW, HW_NCPU }; + if (!sysctl(mib, 2, &count, &size, NULL, 0)) + return count; + return 0; +} +# define _GLIBCXX_NPROCS get_nprocs() #elif defined(_GLIBCXX_USE_SC_NPROCESSORS_ONLN) # include <unistd.h> # define _GLIBCXX_NPROCS sysconf(_SC_NPROCESSORS_ONLN) +#elif defined(_GLIBCXX_USE_SC_NPROC_ONLN) +# include <unistd.h> +# define _GLIBCXX_NPROCS sysconf(_SC_NPROC_ONLN) #else # define _GLIBCXX_NPROCS 0 #endif |