Package sysconf

Constants

const (
    SC_AIO_LISTIO_MAX               = 0x17
    SC_AIO_MAX                      = 0x18
    SC_AIO_PRIO_DELTA_MAX           = 0x19
    SC_ARG_MAX                      = 0x0
    SC_ATEXIT_MAX                   = 0x57
    SC_BC_BASE_MAX                  = 0x24
    SC_BC_DIM_MAX                   = 0x25
    SC_BC_SCALE_MAX                 = 0x26
    SC_BC_STRING_MAX                = 0x27
    SC_CHILD_MAX                    = 0x1
    SC_CLK_TCK                      = 0x2
    SC_COLL_WEIGHTS_MAX             = 0x28
    SC_DELAYTIMER_MAX               = 0x1a
    SC_EXPR_NEST_MAX                = 0x2a
    SC_GETGR_R_SIZE_MAX             = 0x45
    SC_GETPW_R_SIZE_MAX             = 0x46
    SC_HOST_NAME_MAX                = 0xb4
    SC_IOV_MAX                      = 0x3c
    SC_LINE_MAX                     = 0x2b
    SC_LOGIN_NAME_MAX               = 0x47
    SC_MQ_OPEN_MAX                  = 0x1b
    SC_MQ_PRIO_MAX                  = 0x1c
    SC_NGROUPS_MAX                  = 0x3
    SC_OPEN_MAX                     = 0x4
    SC_PAGE_SIZE                    = 0x1e
    SC_PAGESIZE                     = 0x1e
    SC_THREAD_DESTRUCTOR_ITERATIONS = 0x49
    SC_THREAD_KEYS_MAX              = 0x4a
    SC_THREAD_STACK_MIN             = 0x4b
    SC_THREAD_THREADS_MAX           = 0x4c
    SC_RE_DUP_MAX                   = 0x2c
    SC_RTSIG_MAX                    = 0x1f
    SC_SEM_NSEMS_MAX                = 0x20
    SC_SEM_VALUE_MAX                = 0x21
    SC_SIGQUEUE_MAX                 = 0x22
    SC_STREAM_MAX                   = 0x5
    SC_SYMLOOP_MAX                  = 0xad
    SC_TIMER_MAX                    = 0x23
    SC_TTY_NAME_MAX                 = 0x48
    SC_TZNAME_MAX                   = 0x6

    SC_ADVISORY_INFO              = 0x84
    SC_ASYNCHRONOUS_IO            = 0xc
    SC_BARRIERS                   = 0x85
    SC_CLOCK_SELECTION            = 0x89
    SC_CPUTIME                    = 0x8a
    SC_FSYNC                      = 0xf
    SC_IPV6                       = 0xeb
    SC_JOB_CONTROL                = 0x7
    SC_MAPPED_FILES               = 0x10
    SC_MEMLOCK                    = 0x11
    SC_MEMLOCK_RANGE              = 0x12
    SC_MEMORY_PROTECTION          = 0x13
    SC_MESSAGE_PASSING            = 0x14
    SC_MONOTONIC_CLOCK            = 0x95
    SC_PRIORITIZED_IO             = 0xd
    SC_PRIORITY_SCHEDULING        = 0xa
    SC_RAW_SOCKETS                = 0xec
    SC_READER_WRITER_LOCKS        = 0x99
    SC_REALTIME_SIGNALS           = 0x9
    SC_REGEXP                     = 0x9b
    SC_SAVED_IDS                  = 0x8
    SC_SEMAPHORES                 = 0x15
    SC_SHARED_MEMORY_OBJECTS      = 0x16
    SC_SHELL                      = 0x9d
    SC_SPAWN                      = 0x9f
    SC_SPIN_LOCKS                 = 0x9a
    SC_SPORADIC_SERVER            = 0xa0
    SC_SS_REPL_MAX                = 0xf1
    SC_SYNCHRONIZED_IO            = 0xe
    SC_THREAD_ATTR_STACKADDR      = 0x4d
    SC_THREAD_ATTR_STACKSIZE      = 0x4e
    SC_THREAD_CPUTIME             = 0x8b
    SC_THREAD_PRIO_INHERIT        = 0x50
    SC_THREAD_PRIO_PROTECT        = 0x51
    SC_THREAD_PRIORITY_SCHEDULING = 0x4f
    SC_THREAD_PROCESS_SHARED      = 0x52
    SC_THREAD_ROBUST_PRIO_INHERIT = 0xf7
    SC_THREAD_ROBUST_PRIO_PROTECT = 0xf8
    SC_THREAD_SAFE_FUNCTIONS      = 0x44
    SC_THREAD_SPORADIC_SERVER     = 0xa1
    SC_THREADS                    = 0x43
    SC_TIMEOUTS                   = 0xa4
    SC_TIMERS                     = 0xb
    SC_TRACE                      = 0xb5
    SC_TRACE_EVENT_FILTER         = 0xb6
    SC_TRACE_EVENT_NAME_MAX       = 0xf2
    SC_TRACE_INHERIT              = 0xb7
    SC_TRACE_LOG                  = 0xb8
    SC_TRACE_NAME_MAX             = 0xf3
    SC_TRACE_SYS_MAX              = 0xf4
    SC_TRACE_USER_EVENT_MAX       = 0xf5
    SC_TYPED_MEMORY_OBJECTS       = 0xa5
    SC_VERSION                    = 0x1d

    SC_V7_ILP32_OFF32  = 0xed
    SC_V7_ILP32_OFFBIG = 0xee
    SC_V7_LP64_OFF64   = 0xef
    SC_V7_LPBIG_OFFBIG = 0xf0

    SC_V6_ILP32_OFF32  = 0xb0
    SC_V6_ILP32_OFFBIG = 0xb1
    SC_V6_LP64_OFF64   = 0xb2
    SC_V6_LPBIG_OFFBIG = 0xb3

    SC_2_C_BIND         = 0x2f
    SC_2_C_DEV          = 0x30
    SC_2_C_VERSION      = 0x60
    SC_2_CHAR_TERM      = 0x5f
    SC_2_FORT_DEV       = 0x31
    SC_2_FORT_RUN       = 0x32
    SC_2_LOCALEDEF      = 0x34
    SC_2_PBS            = 0xa8
    SC_2_PBS_ACCOUNTING = 0xa9
    SC_2_PBS_CHECKPOINT = 0xaf
    SC_2_PBS_LOCATE     = 0xaa
    SC_2_PBS_MESSAGE    = 0xab
    SC_2_PBS_TRACK      = 0xac
    SC_2_SW_DEV         = 0x33
    SC_2_UPE            = 0x61
    SC_2_VERSION        = 0x2e

    SC_XOPEN_CRYPT            = 0x5c
    SC_XOPEN_ENH_I18N         = 0x5d
    SC_XOPEN_REALTIME         = 0x82
    SC_XOPEN_REALTIME_THREADS = 0x83
    SC_XOPEN_SHM              = 0x5e
    SC_XOPEN_STREAMS          = 0xf6
    SC_XOPEN_UNIX             = 0x5b
    SC_XOPEN_VERSION          = 0x59
    SC_XOPEN_XCU_VERSION      = 0x5a

    SC_PHYS_PAGES       = 0x55
    SC_AVPHYS_PAGES     = 0x56
    SC_NPROCESSORS_CONF = 0x53
    SC_NPROCESSORS_ONLN = 0x54
    SC_UIO_MAXIOV       = 0x3c
)

func Sysconf ¶

func Sysconf(name int) (int64, error)

Sysconf returns the value of a sysconf(3) runtime system parameter. The name parameter should be a SC_* constant define in this package. The implementation is GOOS-specific and certain SC_* constants might not be defined for all GOOSes.

clktck, err := sysconf.Sysconf(sysconf.SC_CLK_TCK)
if err != nil {
    fmt.Fprintf(os.Stderr, "Sysconf: %v\n", err)
}
fmt.Printf("sysconf(SC_CLK_TCK) = %v\n", clktck)

_, err := sysconf.Sysconf(-1)
fmt.Print(err)

invalid parameter value

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