static mstate internal_function arena_get2 (mstate a_tsd, size_t size, mstate avoid_arena) { mstate a; static size_t narenas_limit; a = get_free_list (); if (a == NULL) { /* Nothing immediately available, so generate a new arena. */ if (narenas_limit == 0) { if (mp_.arena_max != 0) narenas_limit = mp_.arena_max; else if (narenas > mp_.arena_test) { int n = __get_nprocs (); if (n >= 1) narenas_limit = NARENAS_FROM_NCORES (n); else /* We have no information about the system. Assume two cores. */ narenas_limit = NARENAS_FROM_NCORES (2); } } repeat:; size_t n = narenas; /* NB: the following depends on the fact that (size_t)0 - 1 is a very large number and that the underflow is OK. If arena_max is set the value of arena_test is irrelevant. If arena_test is set but narenas is not yet larger or equal to arena_test narenas_limit is 0. There is no possibility for narenas to be too big for the test to always fail since there is not enough address space to create that many arenas. */ if (__glibc_unlikely (n <= narenas_limit - 1)) { if (catomic_compare_and_exchange_bool_acq (&narenas, n + 1, n)) goto repeat; a = _int_new_arena (size); if (__glibc_unlikely (a == NULL)) catomic_decrement (&narenas); } else a = reused_arena (avoid_arena); } return a; }
static mstate internal_function arena_get2(mstate a_tsd, size_t size, mstate avoid_arena) { mstate a; #ifdef PER_THREAD static size_t narenas_limit; a = get_free_list (); if (a == NULL) { /* Nothing immediately available, so generate a new arena. */ if (narenas_limit == 0) { if (mp_.arena_max != 0) narenas_limit = mp_.arena_max; else if (narenas > mp_.arena_test) { int n = __get_nprocs (); if (n >= 1) narenas_limit = NARENAS_FROM_NCORES (n); else /* We have no information about the system. Assume two cores. */ narenas_limit = NARENAS_FROM_NCORES (2); } } repeat:; size_t n = narenas; /* NB: the following depends on the fact that (size_t)0 - 1 is a very large number and that the underflow is OK. If arena_max is set the value of arena_test is irrelevant. If arena_test is set but narenas is not yet larger or equal to arena_test narenas_limit is 0. There is no possibility for narenas to be too big for the test to always fail since there is not enough address space to create that many arenas. */ if (__builtin_expect (n <= narenas_limit - 1, 0)) { if (catomic_compare_and_exchange_bool_acq (&narenas, n + 1, n)) goto repeat; a = _int_new_arena (size); if (__builtin_expect (a == NULL, 0)) catomic_decrement (&narenas); } else a = reused_arena (avoid_arena); } #else if(!a_tsd) a = a_tsd = &main_arena; else { a = a_tsd->next; if(!a) { /* This can only happen while initializing the new arena. */ (void)mutex_lock(&main_arena.mutex); THREAD_STAT(++(main_arena.stat_lock_wait)); return &main_arena; } } /* Check the global, circularly linked list for available arenas. */ bool retried = false; repeat: do { if(!mutex_trylock(&a->mutex)) { if (retried) (void)mutex_unlock(&list_lock); THREAD_STAT(++(a->stat_lock_loop)); tsd_setspecific(arena_key, (void *)a); return a; } a = a->next; } while(a != a_tsd); /* If not even the list_lock can be obtained, try again. This can happen during `atfork', or for example on systems where thread creation makes it temporarily impossible to obtain _any_ locks. */ if(!retried && mutex_trylock(&list_lock)) { /* We will block to not run in a busy loop. */ (void)mutex_lock(&list_lock); /* Since we blocked there might be an arena available now. */ retried = true; a = a_tsd; goto repeat; } /* Nothing immediately available, so generate a new arena. */ a = _int_new_arena(size); (void)mutex_unlock(&list_lock); #endif return a; }
/* Get the value of the system variable NAME. */ long int __sysconf (int name) { switch (name) { /* Also add obsolete or unnecessarily added constants here. */ case _SC_EQUIV_CLASS_MAX: default: __set_errno (EINVAL); return -1; case _SC_ARG_MAX: #ifdef ARG_MAX return ARG_MAX; #else return -1; #endif case _SC_CHILD_MAX: #ifdef CHILD_MAX return CHILD_MAX; #else return __get_child_max (); #endif case _SC_CLK_TCK: return __getclktck (); case _SC_NGROUPS_MAX: #ifdef NGROUPS_MAX return NGROUPS_MAX; #else return -1; #endif case _SC_OPEN_MAX: return __getdtablesize (); case _SC_STREAM_MAX: #ifdef STREAM_MAX return STREAM_MAX; #else return FOPEN_MAX; #endif case _SC_TZNAME_MAX: return MAX (__tzname_max (), _POSIX_TZNAME_MAX); case _SC_JOB_CONTROL: #if CONF_IS_DEFINED_SET (_POSIX_JOB_CONTROL) return _POSIX_JOB_CONTROL; #else return -1; #endif case _SC_SAVED_IDS: #if CONF_IS_DEFINED_SET (_POSIX_SAVED_IDS) return 1; #else return -1; #endif case _SC_REALTIME_SIGNALS: #if CONF_IS_DEFINED_SET (_POSIX_REALTIME_SIGNALS) return _POSIX_REALTIME_SIGNALS; #else return -1; #endif case _SC_PRIORITY_SCHEDULING: #if CONF_IS_DEFINED_SET (_POSIX_PRIORITY_SCHEDULING) return _POSIX_PRIORITY_SCHEDULING; #else return -1; #endif case _SC_TIMERS: #if CONF_IS_DEFINED_SET (_POSIX_TIMERS) return _POSIX_TIMERS; #else return -1; #endif case _SC_ASYNCHRONOUS_IO: #if CONF_IS_DEFINED_SET (_POSIX_ASYNCHRONOUS_IO) return _POSIX_ASYNCHRONOUS_IO; #else return -1; #endif case _SC_PRIORITIZED_IO: #if CONF_IS_DEFINED_SET (_POSIX_PRIORITIZED_IO) return _POSIX_PRIORITIZED_IO; #else return -1; #endif case _SC_SYNCHRONIZED_IO: #if CONF_IS_DEFINED_SET (_POSIX_SYNCHRONIZED_IO) return _POSIX_SYNCHRONIZED_IO; #else return -1; #endif case _SC_FSYNC: #if CONF_IS_DEFINED_SET (_POSIX_FSYNC) return _POSIX_FSYNC; #else return -1; #endif case _SC_MAPPED_FILES: #if CONF_IS_DEFINED_SET (_POSIX_MAPPED_FILES) return _POSIX_MAPPED_FILES; #else return -1; #endif case _SC_MEMLOCK: #if CONF_IS_DEFINED_SET (_POSIX_MEMLOCK) return _POSIX_MEMLOCK; #else return -1; #endif case _SC_MEMLOCK_RANGE: #if CONF_IS_DEFINED_SET (_POSIX_MEMLOCK_RANGE) return _POSIX_MEMLOCK_RANGE; #else return -1; #endif case _SC_MEMORY_PROTECTION: #if CONF_IS_DEFINED_SET (_POSIX_MEMORY_PROTECTION) return _POSIX_MEMORY_PROTECTION; #else return -1; #endif case _SC_MESSAGE_PASSING: #if CONF_IS_DEFINED_SET (_POSIX_MESSAGE_PASSING) return _POSIX_MESSAGE_PASSING; #else return -1; #endif case _SC_SEMAPHORES: #if CONF_IS_DEFINED_SET (_POSIX_SEMAPHORES) return _POSIX_SEMAPHORES; #else return -1; #endif case _SC_SHARED_MEMORY_OBJECTS: #if CONF_IS_DEFINED_SET (_POSIX_SHARED_MEMORY_OBJECTS) return _POSIX_SHARED_MEMORY_OBJECTS; #else return -1; #endif case _SC_VERSION: return _POSIX_VERSION; case _SC_PAGESIZE: return __getpagesize (); case _SC_AIO_LISTIO_MAX: #ifdef AIO_LISTIO_MAX return AIO_LISTIO_MAX; #else return -1; #endif case _SC_AIO_MAX: #ifdef AIO_MAX return AIO_MAX; #else return -1; #endif case _SC_AIO_PRIO_DELTA_MAX: #ifdef AIO_PRIO_DELTA_MAX return AIO_PRIO_DELTA_MAX; #else return -1; #endif case _SC_DELAYTIMER_MAX: #ifdef DELAYTIMER_MAX return DELAYTIMER_MAX; #else return -1; #endif case _SC_MQ_OPEN_MAX: #ifdef MQ_OPEN_MAX return MQ_OPEN_MAX; #else return -1; #endif case _SC_MQ_PRIO_MAX: #ifdef MQ_PRIO_MAX return MQ_PRIO_MAX; #else return -1; #endif case _SC_RTSIG_MAX: #ifdef RTSIG_MAX return RTSIG_MAX; #else return -1; #endif case _SC_SEM_NSEMS_MAX: #ifdef SEM_NSEMS_MAX return SEM_NSEMS_MAX; #else return -1; #endif case _SC_SEM_VALUE_MAX: #ifdef SEM_VALUE_MAX return SEM_VALUE_MAX; #else return -1; #endif case _SC_SIGQUEUE_MAX: #ifdef SIGQUEUE_MAX return SIGQUEUE_MAX; #else return -1; #endif case _SC_TIMER_MAX: #ifdef TIMER_MAX return TIMER_MAX; #else return -1; #endif case _SC_BC_BASE_MAX: #ifdef BC_BASE_MAX return BC_BASE_MAX; #else return -1; #endif case _SC_BC_DIM_MAX: #ifdef BC_DIM_MAX return BC_DIM_MAX; #else return -1; #endif case _SC_BC_SCALE_MAX: #ifdef BC_SCALE_MAX return BC_SCALE_MAX; #else return -1; #endif case _SC_BC_STRING_MAX: #ifdef BC_STRING_MAX return BC_STRING_MAX; #else return -1; #endif case _SC_COLL_WEIGHTS_MAX: #ifdef COLL_WEIGHTS_MAX return COLL_WEIGHTS_MAX; #else return -1; #endif case _SC_EXPR_NEST_MAX: #ifdef EXPR_NEST_MAX return EXPR_NEST_MAX; #else return -1; #endif case _SC_LINE_MAX: #ifdef LINE_MAX return LINE_MAX; #else return -1; #endif case _SC_RE_DUP_MAX: #ifdef RE_DUP_MAX return RE_DUP_MAX; #else return -1; #endif case _SC_CHARCLASS_NAME_MAX: #ifdef CHARCLASS_NAME_MAX return CHARCLASS_NAME_MAX; #else return -1; #endif case _SC_PII: #if CONF_IS_DEFINED_SET (_POSIX_PII) return 1; #else return -1; #endif case _SC_PII_XTI: #if CONF_IS_DEFINED_SET (_POSIX_PII_XTI) return 1; #else return -1; #endif case _SC_PII_SOCKET: #if CONF_IS_DEFINED_SET (_POSIX_PII_SOCKET) return 1; #else return -1; #endif case _SC_PII_INTERNET: #if CONF_IS_DEFINED_SET (_POSIX_PII_INTERNET) return 1; #else return -1; #endif case _SC_PII_OSI: #if CONF_IS_DEFINED_SET (_POSIX_PII_OSI) return 1; #else return -1; #endif case _SC_POLL: #if CONF_IS_DEFINED_SET (_POSIX_POLL) return 1; #else return -1; #endif case _SC_SELECT: #if CONF_IS_DEFINED_SET (_POSIX_SELECT) return 1; #else return -1; #endif /* The same as _SC_IOV_MAX. */ case _SC_UIO_MAXIOV: #ifdef UIO_MAXIOV return UIO_MAXIOV; #else return -1; #endif case _SC_PII_INTERNET_STREAM: #if CONF_IS_DEFINED_SET (_POSIX_PII_INTERNET_STREAM) return 1; #else return -1; #endif case _SC_PII_INTERNET_DGRAM: #if CONF_IS_DEFINED_SET (_POSIX_PII_INTERNET_DGRAM) return 1; #else return -1; #endif case _SC_PII_OSI_COTS: #if CONF_IS_DEFINED_SET (_POSIX_PII_OSI_COTS) return 1; #else return -1; #endif case _SC_PII_OSI_CLTS: #if CONF_IS_DEFINED_SET (_POSIX_PII_OSI_CLTS) return 1; #else return -1; #endif case _SC_PII_OSI_M: #if CONF_IS_DEFINED_SET (_POSIX_PII_OSI_M) return 1; #else return -1; #endif case _SC_T_IOV_MAX: #ifdef _T_IOV_MAX return _T_IOV_MAX; #else return -1; #endif case _SC_2_VERSION: return _POSIX2_VERSION; case _SC_2_C_BIND: #ifdef _POSIX2_C_BIND return _POSIX2_C_BIND; #else return -1; #endif case _SC_2_C_DEV: #ifdef _POSIX2_C_DEV return _POSIX2_C_DEV; #else return -1; #endif case _SC_2_C_VERSION: #ifdef _POSIX2_C_VERSION return _POSIX2_C_VERSION; #else return -1; #endif case _SC_2_FORT_DEV: #ifdef _POSIX2_FORT_DEV return _POSIX2_FORT_DEV; #else return -1; #endif case _SC_2_FORT_RUN: #ifdef _POSIX2_FORT_RUN return _POSIX2_FORT_RUN; #else return -1; #endif case _SC_2_LOCALEDEF: #ifdef _POSIX2_LOCALEDEF return _POSIX2_LOCALEDEF; #else return -1; #endif case _SC_2_SW_DEV: #ifdef _POSIX2_SW_DEV return _POSIX2_SW_DEV; #else return -1; #endif case _SC_2_CHAR_TERM: #ifdef _POSIX2_CHAR_TERM return _POSIX2_CHAR_TERM; #else return -1; #endif case _SC_2_UPE: #ifdef _POSIX2_UPE return _POSIX2_UPE; #else return -1; #endif /* POSIX 1003.1c (POSIX Threads). */ case _SC_THREADS: #if CONF_IS_DEFINED_SET (_POSIX_THREADS) return _POSIX_THREADS; #else return -1; #endif case _SC_THREAD_SAFE_FUNCTIONS: #if CONF_IS_DEFINED_SET (_POSIX_THREAD_SAFE_FUNCTIONS) return _POSIX_THREAD_SAFE_FUNCTIONS; #else return -1; #endif case _SC_GETGR_R_SIZE_MAX: return NSS_BUFLEN_GROUP; case _SC_GETPW_R_SIZE_MAX: return NSS_BUFLEN_PASSWD; case _SC_LOGIN_NAME_MAX: #ifdef LOGIN_NAME_MAX return LOGIN_NAME_MAX; #else return -1; #endif case _SC_TTY_NAME_MAX: #ifdef TTY_NAME_MAX return TTY_NAME_MAX; #else return -1; #endif case _SC_THREAD_DESTRUCTOR_ITERATIONS: #if CONF_IS_DEFINED_SET (_POSIX_THREAD_DESTRUCTOR_ITERATIONS) return _POSIX_THREAD_DESTRUCTOR_ITERATIONS; #else return -1; #endif case _SC_THREAD_KEYS_MAX: #ifdef PTHREAD_KEYS_MAX return PTHREAD_KEYS_MAX; #else return -1; #endif case _SC_THREAD_STACK_MIN: #ifdef PTHREAD_STACK_MIN return PTHREAD_STACK_MIN; #else return -1; #endif case _SC_THREAD_THREADS_MAX: #ifdef PTHREAD_THREADS_MAX return PTHREAD_THREADS_MAX; #else return -1; #endif case _SC_THREAD_ATTR_STACKADDR: #if CONF_IS_DEFINED_SET (_POSIX_THREAD_ATTR_STACKADDR) return _POSIX_THREAD_ATTR_STACKADDR; #else return -1; #endif case _SC_THREAD_ATTR_STACKSIZE: #if CONF_IS_DEFINED_SET (_POSIX_THREAD_ATTR_STACKSIZE) return _POSIX_THREAD_ATTR_STACKSIZE; #else return -1; #endif case _SC_THREAD_PRIORITY_SCHEDULING: #if CONF_IS_DEFINED_SET (_POSIX_THREAD_PRIORITY_SCHEDULING) return _POSIX_THREAD_PRIORITY_SCHEDULING; #else return -1; #endif case _SC_THREAD_PRIO_INHERIT: #if CONF_IS_DEFINED_SET (_POSIX_THREAD_PRIO_INHERIT) return _POSIX_THREAD_PRIO_INHERIT; #else return -1; #endif case _SC_THREAD_PRIO_PROTECT: #if CONF_IS_DEFINED_SET (_POSIX_THREAD_PRIO_PROTECT) return _POSIX_THREAD_PRIO_PROTECT; #else return -1; #endif case _SC_THREAD_PROCESS_SHARED: #if CONF_IS_DEFINED_SET (_POSIX_THREAD_PROCESS_SHARED) return _POSIX_THREAD_PROCESS_SHARED; #else return -1; #endif case _SC_NPROCESSORS_CONF: return __get_nprocs_conf (); case _SC_NPROCESSORS_ONLN: return __get_nprocs (); case _SC_PHYS_PAGES: return __get_phys_pages (); case _SC_AVPHYS_PAGES: return __get_avphys_pages (); case _SC_ATEXIT_MAX: /* We have no limit since we use lists. */ return INT_MAX; case _SC_PASS_MAX: /* We have no limit but since the return value might be used to allocate a buffer we restrict the value. */ return BUFSIZ; case _SC_XOPEN_VERSION: return _XOPEN_VERSION; case _SC_XOPEN_XCU_VERSION: return _XOPEN_XCU_VERSION; case _SC_XOPEN_UNIX: return _XOPEN_UNIX; case _SC_XOPEN_CRYPT: #ifdef _XOPEN_CRYPT return _XOPEN_CRYPT; #else return -1; #endif case _SC_XOPEN_ENH_I18N: #ifdef _XOPEN_ENH_I18N return _XOPEN_ENH_I18N; #else return -1; #endif case _SC_XOPEN_SHM: #ifdef _XOPEN_SHM return _XOPEN_SHM; #else return -1; #endif case _SC_XOPEN_XPG2: #ifdef _XOPEN_XPG2 return _XOPEN_XPG2; #else return -1; #endif case _SC_XOPEN_XPG3: #ifdef _XOPEN_XPG3 return _XOPEN_XPG3; #else return -1; #endif case _SC_XOPEN_XPG4: #ifdef _XOPEN_XPG4 return _XOPEN_XPG4; #else return -1; #endif case _SC_CHAR_BIT: return CHAR_BIT; case _SC_CHAR_MAX: return CHAR_MAX; case _SC_CHAR_MIN: return CHAR_MIN; case _SC_INT_MAX: return INT_MAX; case _SC_INT_MIN: return INT_MIN; case _SC_LONG_BIT: return sizeof (long int) * CHAR_BIT; case _SC_WORD_BIT: return sizeof (int) * CHAR_BIT; case _SC_MB_LEN_MAX: return MB_LEN_MAX; case _SC_NZERO: return NZERO; case _SC_SSIZE_MAX: return _POSIX_SSIZE_MAX; case _SC_SCHAR_MAX: return SCHAR_MAX; case _SC_SCHAR_MIN: return SCHAR_MIN; case _SC_SHRT_MAX: return SHRT_MAX; case _SC_SHRT_MIN: return SHRT_MIN; case _SC_UCHAR_MAX: return UCHAR_MAX; case _SC_UINT_MAX: return UINT_MAX; case _SC_ULONG_MAX: return ULONG_MAX; case _SC_USHRT_MAX: return USHRT_MAX; case _SC_NL_ARGMAX: #ifdef NL_ARGMAX return NL_ARGMAX; #else return -1; #endif case _SC_NL_LANGMAX: #ifdef NL_LANGMAX return NL_LANGMAX; #else return -1; #endif case _SC_NL_MSGMAX: #ifdef NL_MSGMAX return NL_MSGMAX; #else return -1; #endif case _SC_NL_NMAX: #ifdef NL_NMAX return NL_NMAX; #else return -1; #endif case _SC_NL_SETMAX: #ifdef NL_SETMAX return NL_SETMAX; #else return -1; #endif case _SC_NL_TEXTMAX: #ifdef NL_TEXTMAX return NL_TEXTMAX; #else return -1; #endif #define START_ENV_GROUP(VERSION) \ /* Empty. */ #define END_ENV_GROUP(VERSION) \ /* Empty. */ #define KNOWN_ABSENT_ENVIRONMENT(SC_PREFIX, ENV_PREFIX, SUFFIX) \ case _SC_##SC_PREFIX##_##SUFFIX: \ return _##ENV_PREFIX##_##SUFFIX; #define KNOWN_PRESENT_ENVIRONMENT(SC_PREFIX, ENV_PREFIX, SUFFIX) \ case _SC_##SC_PREFIX##_##SUFFIX: \ return _##ENV_PREFIX##_##SUFFIX; #define UNKNOWN_ENVIRONMENT(SC_PREFIX, ENV_PREFIX, SUFFIX) \ case _SC_##SC_PREFIX##_##SUFFIX: \ return __sysconf_check_spec (#SUFFIX); #include <posix/posix-envs.def> #undef START_ENV_GROUP #undef END_ENV_GROUP #undef KNOWN_ABSENT_ENVIRONMENT #undef KNOWN_PRESENT_ENVIRONMENT #undef UNKNOWN_ENVIRONMENT case _SC_XOPEN_LEGACY: return _XOPEN_LEGACY; case _SC_XOPEN_REALTIME: #ifdef _XOPEN_REALTIME return _XOPEN_REALTIME; #else return -1; #endif case _SC_XOPEN_REALTIME_THREADS: #ifdef _XOPEN_REALTIME_THREADS return _XOPEN_REALTIME_THREADS; #else return -1; #endif case _SC_ADVISORY_INFO: #if CONF_IS_DEFINED_SET (_POSIX_ADVISORY_INFO) return _POSIX_ADVISORY_INFO; #else return -1; #endif case _SC_BARRIERS: #if CONF_IS_DEFINED_SET (_POSIX_BARRIERS) return _POSIX_BARRIERS; #else return -1; #endif case _SC_BASE: #if CONF_IS_DEFINED_SET (_POSIX_BASE) return _POSIX_BASE; #else return -1; #endif case _SC_C_LANG_SUPPORT: #if CONF_IS_DEFINED_SET (_POSIX_C_LANG_SUPPORT) return _POSIX_C_LANG_SUPPORT; #else return -1; #endif case _SC_C_LANG_SUPPORT_R: #if CONF_IS_DEFINED_SET (_POSIX_C_LANG_SUPPORT_R) return _POSIX_C_LANG_SUPPORT_R; #else return -1; #endif case _SC_CLOCK_SELECTION: #if CONF_IS_DEFINED_SET (_POSIX_CLOCK_SELECTION) return _POSIX_CLOCK_SELECTION; #else return -1; #endif case _SC_CPUTIME: #if CONF_IS_DEFINED_SET (_POSIX_CPUTIME) return _POSIX_CPUTIME; #else return -1; #endif case _SC_DEVICE_IO: #if CONF_IS_DEFINED_SET (_POSIX_DEVICE_IO) return _POSIX_DEVICE_IO; #else return -1; #endif case _SC_DEVICE_SPECIFIC: #if CONF_IS_DEFINED_SET (_POSIX_DEVICE_SPECIFIC) return _POSIX_DEVICE_SPECIFIC; #else return -1; #endif case _SC_DEVICE_SPECIFIC_R: #if CONF_IS_DEFINED_SET (_POSIX_DEVICE_SPECIFIC_R) return _POSIX_DEVICE_SPECIFIC_R; #else return -1; #endif case _SC_FD_MGMT: #if CONF_IS_DEFINED_SET (_POSIX_FD_MGMT) return _POSIX_FD_MGMT; #else return -1; #endif case _SC_FIFO: #if CONF_IS_DEFINED_SET (_POSIX_FIFO) return _POSIX_FIFO; #else return -1; #endif case _SC_PIPE: #if CONF_IS_DEFINED_SET (_POSIX_PIPE) return _POSIX_PIPE; #else return -1; #endif case _SC_FILE_ATTRIBUTES: #if CONF_IS_DEFINED_SET (_POSIX_FILE_ATTRIBUTES) return _POSIX_FILE_ATTRIBUTES; #else return -1; #endif case _SC_FILE_LOCKING: #if CONF_IS_DEFINED_SET (_POSIX_FILE_LOCKING) return _POSIX_FILE_LOCKING; #else return -1; #endif case _SC_FILE_SYSTEM: #if CONF_IS_DEFINED_SET (_POSIX_FILE_SYSTEM) return _POSIX_FILE_SYSTEM; #else return -1; #endif case _SC_MONOTONIC_CLOCK: #if CONF_IS_DEFINED_SET (_POSIX_MONOTONIC_CLOCK) return _POSIX_MONOTONIC_CLOCK; #else return -1; #endif case _SC_MULTI_PROCESS: #if CONF_IS_DEFINED_SET (_POSIX_MULTI_PROCESS) return _POSIX_MULTI_PROCESS; #else return -1; #endif case _SC_SINGLE_PROCESS: #if CONF_IS_DEFINED_SET (_POSIX_SINGLE_PROCESS) return _POSIX_SINGLE_PROCESS; #else return -1; #endif case _SC_NETWORKING: #if CONF_IS_DEFINED_SET (_POSIX_NETWORKING) return _POSIX_NETWORKING; #else return -1; #endif case _SC_READER_WRITER_LOCKS: #if CONF_IS_DEFINED_SET (_POSIX_READER_WRITER_LOCKS) return _POSIX_READER_WRITER_LOCKS; #else return -1; #endif case _SC_SPIN_LOCKS: #if CONF_IS_DEFINED_SET (_POSIX_SPIN_LOCKS) return _POSIX_SPIN_LOCKS; #else return -1; #endif case _SC_REGEXP: #if CONF_IS_DEFINED_SET (_POSIX_REGEXP) return _POSIX_REGEXP; #else return -1; #endif /* _REGEX_VERSION has been removed with IEEE Std 1003.1-2001/Cor 2-2004, item XSH/TC2/D6/137. */ case _SC_REGEX_VERSION: return -1; case _SC_SHELL: #if CONF_IS_DEFINED_SET (_POSIX_SHELL) return _POSIX_SHELL; #else return -1; #endif case _SC_SIGNALS: #if CONF_IS_DEFINED (_POSIX_SIGNALS) return _POSIX_SIGNALS; #else return -1; #endif case _SC_SPAWN: #if CONF_IS_DEFINED_SET (_POSIX_SPAWN) return _POSIX_SPAWN; #else return -1; #endif case _SC_SPORADIC_SERVER: #if CONF_IS_DEFINED_SET (_POSIX_SPORADIC_SERVER) return _POSIX_SPORADIC_SERVER; #else return -1; #endif case _SC_THREAD_SPORADIC_SERVER: #if CONF_IS_DEFINED_SET (_POSIX_THREAD_SPORADIC_SERVER) return _POSIX_THREAD_SPORADIC_SERVER; #else return -1; #endif case _SC_SYSTEM_DATABASE: #if CONF_IS_DEFINED_SET (_POSIX_SYSTEM_DATABASE) return _POSIX_SYSTEM_DATABASE; #else return -1; #endif case _SC_SYSTEM_DATABASE_R: #if CONF_IS_DEFINED_SET (_POSIX_SYSTEM_DATABASE_R) return _POSIX_SYSTEM_DATABASE_R; #else return -1; #endif case _SC_THREAD_CPUTIME: #if CONF_IS_DEFINED_SET (_POSIX_THREAD_CPUTIME) return _POSIX_THREAD_CPUTIME; #else return -1; #endif case _SC_TIMEOUTS: #if CONF_IS_DEFINED_SET (_POSIX_TIMEOUTS) return _POSIX_TIMEOUTS; #else return -1; #endif case _SC_TYPED_MEMORY_OBJECTS: #if CONF_IS_DEFINED_SET (_POSIX_TYPED_MEMORY_OBJECTS) return _POSIX_TYPED_MEMORY_OBJECTS; #else return -1; #endif case _SC_USER_GROUPS: #if CONF_IS_DEFINED_SET (_POSIX_USER_GROUPS) return _POSIX_USER_GROUPS; #else return -1; #endif case _SC_USER_GROUPS_R: #if CONF_IS_DEFINED_SET (_POSIX_USER_GROUPS_R) return _POSIX_USER_GROUPS_R; #else return -1; #endif case _SC_2_PBS: #ifdef _POSIX2_PBS return _POSIX2_PBS; #else return -1; #endif case _SC_2_PBS_ACCOUNTING: #ifdef _POSIX2_PBS_ACCOUNTING return _POSIX2_PBS_ACCOUNTING; #else return -1; #endif case _SC_2_PBS_CHECKPOINT: #ifdef _POSIX2_PBS_CHECKPOINT return _POSIX2_PBS_CHECKPOINT; #else return -1; #endif case _SC_2_PBS_LOCATE: #ifdef _POSIX2_PBS_LOCATE return _POSIX2_PBS_LOCATE; #else return -1; #endif case _SC_2_PBS_MESSAGE: #ifdef _POSIX2_PBS_MESSAGE return _POSIX2_PBS_MESSAGE; #else return -1; #endif case _SC_2_PBS_TRACK: #ifdef _POSIX2_PBS_TRACK return _POSIX2_PBS_TRACK; #else return -1; #endif case _SC_SYMLOOP_MAX: #ifdef SYMLOOP_MAX return SYMLOOP_MAX; #else return -1; #endif case _SC_STREAMS: #ifdef _XOPEN_STREAMS return _XOPEN_STREAMS; #else return -1; #endif case _SC_HOST_NAME_MAX: #ifdef HOST_NAME_MAX return HOST_NAME_MAX; #else return -1; #endif case _SC_TRACE: #if CONF_IS_DEFINED_SET (_POSIX_TRACE) return _POSIX_TRACE; #else return -1; #endif case _SC_TRACE_EVENT_FILTER: #if CONF_IS_DEFINED_SET (_POSIX_TRACE_EVENT_FILTER) return _POSIX_TRACE_EVENT_FILTER; #else return -1; #endif case _SC_TRACE_INHERIT: #if CONF_IS_DEFINED_SET (_POSIX_TRACE_INHERIT) return _POSIX_TRACE_INHERIT; #else return -1; #endif case _SC_TRACE_LOG: #if CONF_IS_DEFINED_SET (_POSIX_TRACE_LOG) return _POSIX_TRACE_LOG; #else return -1; #endif case _SC_TRACE_EVENT_NAME_MAX: case _SC_TRACE_NAME_MAX: case _SC_TRACE_SYS_MAX: case _SC_TRACE_USER_EVENT_MAX: /* No support for tracing. */ case _SC_XOPEN_STREAMS: /* No support for STREAMS. */ return -1; case _SC_LEVEL1_ICACHE_SIZE: case _SC_LEVEL1_ICACHE_ASSOC: case _SC_LEVEL1_ICACHE_LINESIZE: case _SC_LEVEL1_DCACHE_SIZE: case _SC_LEVEL1_DCACHE_ASSOC: case _SC_LEVEL1_DCACHE_LINESIZE: case _SC_LEVEL2_CACHE_SIZE: case _SC_LEVEL2_CACHE_ASSOC: case _SC_LEVEL2_CACHE_LINESIZE: case _SC_LEVEL3_CACHE_SIZE: case _SC_LEVEL3_CACHE_ASSOC: case _SC_LEVEL3_CACHE_LINESIZE: case _SC_LEVEL4_CACHE_SIZE: case _SC_LEVEL4_CACHE_ASSOC: case _SC_LEVEL4_CACHE_LINESIZE: /* In general we cannot determine these values. Therefore we return zero which indicates that no information is available. */ return 0; case _SC_IPV6: #if CONF_IS_DEFINED_SET (_POSIX_IPV6) return _POSIX_IPV6; #else return -1; #endif case _SC_RAW_SOCKETS: #if CONF_IS_DEFINED_SET (_POSIX_RAW_SOCKETS) return _POSIX_RAW_SOCKETS; #else return -1; #endif } }