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man pages section 3: Basic Library Functions
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Document Information

Using This Documentation

Basic Library Functions

__fbufsize(3C)

__flbf(3C)

__fpending(3C)

__fpurge(3C)

__freadable(3C)

__freading(3C)

__fsetlocking(3C)

__fwritable(3C)

__fwriting(3C)

_edata(3C)

_end(3C)

_etext(3C)

_exithandle(3C)

_flushlbf(3C)

_longjmp(3C)

_setjmp(3C)

_stack_grow(3C)

_tolower(3C)

_toupper(3C)

a64l(3C)

abort(3C)

abs(3C)

addrtosymstr(3C)

addsev(3C)

addseverity(3C)

aio_cancel(3C)

aio_error(3C)

aio_fsync(3C)

aio_read(3C)

aio_return(3C)

aio_suspend(3C)

aio_waitn(3C)

aio_write(3C)

aiocancel(3C)

aioread(3C)

aiowait(3C)

aiowrite(3C)

alloca(3C)

alphasort(3C)

ascftime(3C)

asctime(3C)

asctime_r(3C)

asprintf(3C)

assert(3C)

atexit(3C)

atof(3C)

atoi(3C)

atol(3C)

atoll(3C)

atomic_add(3C)

atomic_add_16(3C)

atomic_add_16_nv(3C)

atomic_add_32(3C)

atomic_add_32_nv(3C)

atomic_add_64(3C)

atomic_add_64_nv(3C)

atomic_add_8(3C)

atomic_add_8_nv(3C)

atomic_add_char(3C)

atomic_add_char_nv(3C)

atomic_add_int(3C)

atomic_add_int_nv(3C)

atomic_add_long(3C)

atomic_add_long_nv(3C)

atomic_add_ptr(3C)

atomic_add_ptr_nv(3C)

atomic_add_short(3C)

atomic_add_short_nv(3C)

atomic_and(3C)

atomic_and_16(3C)

atomic_and_16_nv(3C)

atomic_and_32(3C)

atomic_and_32_nv(3C)

atomic_and_64(3C)

atomic_and_64_nv(3C)

atomic_and_8(3C)

atomic_and_8_nv(3C)

atomic_and_uchar(3C)

atomic_and_uchar_nv(3C)

atomic_and_uint(3C)

atomic_and_uint_nv(3C)

atomic_and_ulong(3C)

atomic_and_ulong_nv(3C)

atomic_and_ushort(3C)

atomic_and_ushort_nv(3C)

atomic_bits(3C)

atomic_cas(3C)

atomic_cas_16(3C)

atomic_cas_32(3C)

atomic_cas_64(3C)

atomic_cas_8(3C)

atomic_cas_ptr(3C)

atomic_cas_uchar(3C)

atomic_cas_uint(3C)

atomic_cas_ulong(3C)

atomic_cas_ushort(3C)

atomic_clear_long_excl(3C)

atomic_dec(3C)

atomic_dec_16(3C)

atomic_dec_16_nv(3C)

atomic_dec_32(3C)

atomic_dec_32_nv(3C)

atomic_dec_64(3C)

atomic_dec_64_nv(3C)

atomic_dec_8(3C)

atomic_dec_8_nv(3C)

atomic_dec_ptr(3C)

atomic_dec_ptr_nv(3C)

atomic_dec_uchar(3C)

atomic_dec_uchar_nv(3C)

atomic_dec_uint(3C)

atomic_dec_uint_nv(3C)

atomic_dec_ulong(3C)

atomic_dec_ulong_nv(3C)

atomic_dec_ushort(3C)

atomic_dec_ushort_nv(3C)

atomic_inc(3C)

atomic_inc_16(3C)

atomic_inc_16_nv(3C)

atomic_inc_32(3C)

atomic_inc_32_nv(3C)

atomic_inc_64(3C)

atomic_inc_64_nv(3C)

atomic_inc_8(3C)

atomic_inc_8_nv(3C)

atomic_inc_ptr(3C)

atomic_inc_ptr_nv(3C)

atomic_inc_uchar(3C)

atomic_inc_uchar_nv(3C)

atomic_inc_uint(3C)

atomic_inc_uint_nv(3C)

atomic_inc_ulong(3C)

atomic_inc_ulong_nv(3C)

atomic_inc_ushort(3C)

atomic_inc_ushort_nv(3C)

atomic_ops(3C)

atomic_or(3C)

atomic_or_16(3C)

atomic_or_16_nv(3C)

atomic_or_32(3C)

atomic_or_32_nv(3C)

atomic_or_64(3C)

atomic_or_64_nv(3C)

atomic_or_8(3C)

atomic_or_8_nv(3C)

atomic_or_uchar(3C)

atomic_or_uchar_nv(3C)

atomic_or_uint(3C)

atomic_or_uint_nv(3C)

atomic_or_ulong(3C)

atomic_or_ulong_nv(3C)

atomic_or_ushort(3C)

atomic_or_ushort_nv(3C)

atomic_set_long_excl(3C)

atomic_swap(3C)

atomic_swap_16(3C)

atomic_swap_32(3C)

atomic_swap_64(3C)

atomic_swap_8(3C)

atomic_swap_ptr(3C)

atomic_swap_uchar(3C)

atomic_swap_uint(3C)

atomic_swap_ulong(3C)

atomic_swap_ushort(3C)

attropen(3C)

backtrace(3C)

backtrace_symbols(3C)

backtrace_symbols_fd(3C)

basename(3C)

bcmp(3C)

bcopy(3C)

bind_textdomain_codeset(3C)

bindtextdomain(3C)

bsd_signal(3C)

bsdmalloc(3MALLOC)

bsearch(3C)

bstring(3C)

btowc(3C)

bzero(3C)

calloc(3C)

calloc(3MALLOC)

canonicalize_file_name(3C)

catclose(3C)

catgets(3C)

catopen(3C)

cfgetispeed(3C)

cfgetospeed(3C)

cfsetispeed(3C)

cfsetospeed(3C)

cftime(3C)

chkauthattr(3C)

chkauthattr_ucred(3C)

clearenv(3C)

clearerr(3C)

clock(3C)

clock_getres(3C)

clock_gettime(3C)

clock_nanosleep(3C)

clock_settime(3C)

closedir(3C)

closefrom(3C)

closelog(3C)

cond_broadcast(3C)

cond_destroy(3C)

cond_init(3C)

cond_reltimedwait(3C)

cond_signal(3C)

cond_timedwait(3C)

cond_wait(3C)

confstr(3C)

crypt(3C)

crypt_genhash_impl(3C)

crypt_gensalt(3C)

crypt_gensalt_impl(3C)

cset(3C)

csetcol(3C)

csetlen(3C)

csetno(3C)

ctermid(3C)

ctermid_r(3C)

ctime(3C)

ctime_r(3C)

ctype(3C)

cuserid(3C)

daemon(3C)

dbm_clearerr(3C)

dbm_close(3C)

dbm_delete(3C)

dbm_error(3C)

dbm_fetch(3C)

dbm_firstkey(3C)

dbm_nextkey(3C)

dbm_open(3C)

dbm_store(3C)

dcgettext(3C)

dcngettext(3C)

decimal_to_double(3C)

decimal_to_extended(3C)

decimal_to_floating(3C)

decimal_to_quadruple(3C)

decimal_to_single(3C)

dgettext(3C)

difftime(3C)

directio(3C)

dirfd(3C)

dirname(3C)

div(3C)

dl_iterate_phdr(3C)

dladdr(3C)

dladdr1(3C)

dlclose(3C)

dldump(3C)

dlerror(3C)

dlinfo(3C)

dlmopen(3C)

dlopen(3C)

dlsym(3C)

dngettext(3C)

door_bind(3C)

door_call(3C)

door_create(3C)

door_cred(3C)

door_getparam(3C)

door_info(3C)

door_return(3C)

door_revoke(3C)

door_server_create(3C)

door_setparam(3C)

door_ucred(3C)

door_unbind(3C)

door_xcreate(3C)

double_to_decimal(3C)

drand48(3C)

dup2(3C)

econvert(3C)

ecvt(3C)

edata(3C)

enable_extended_FILE_stdio(3C)

encrypt(3C)

end(3C)

endauthattr(3C)

endexecattr(3C)

endgrent(3C)

endnetgrent(3C)

endprofattr(3C)

endpwent(3C)

endspent(3C)

enduserattr(3C)

endusershell(3C)

endutent(3C)

endutxent(3C)

erand48(3C)

err(3C)

errno(3C)

errx(3C)

etext(3C)

euccol(3C)

euclen(3C)

eucscol(3C)

exit(3C)

extended_to_decimal(3C)

fattach(3C)

fclose(3C)

fcloseall(3C)

fconvert(3C)

fcvt(3C)

FD_CLR(3C)

FD_ISSET(3C)

FD_SET(3C)

FD_ZERO(3C)

fdatasync(3C)

fdetach(3C)

fdopen(3C)

fdopendir(3C)

fdwalk(3C)

feof(3C)

ferror(3C)

fflush(3C)

ffs(3C)

ffsl(3C)

ffsll(3C)

fgetattr(3C)

fgetc(3C)

fgetgrent(3C)

fgetgrent_r(3C)

fgetpos(3C)

fgetpwent(3C)

fgetpwent_r(3C)

fgets(3C)

fgetspent(3C)

fgetspent_r(3C)

fgetuserattr(3C)

fgetwc(3C)

fgetws(3C)

file_to_decimal(3C)

fileno(3C)

finite(3C)

floating_to_decimal(3C)

flockfile(3C)

fls(3C)

flsl(3C)

flsll(3C)

fmtmsg(3C)

fnmatch(3C)

fopen(3C)

fpclass(3C)

fpgetmask(3C)

fpgetround(3C)

fpgetsticky(3C)

fprintf(3C)

fpsetmask(3C)

fpsetround(3C)

fpsetsticky(3C)

fputc(3C)

fputs(3C)

fputwc(3C)

fputws(3C)

fread(3C)

frealpath(3C)

free(3C)

free(3MALLOC)

free_authattr(3C)

free_execattr(3C)

free_profattr(3C)

free_proflist(3C)

free_userattr(3C)

freopen(3C)

fscanf(3C)

fseek(3C)

fseeko(3C)

fsetattr(3C)

fsetpos(3C)

fsync(3C)

ftell(3C)

ftello(3C)

ftime(3C)

ftok(3C)

ftruncate(3C)

ftrylockfile(3C)

ftw(3C)

func_to_decimal(3C)

funlockfile(3C)

fwide(3C)

fwprintf(3C)

fwrite(3C)

fwscanf(3C)

gconvert(3C)

gcvt(3C)

get_nprocs(3C)

get_nprocs_conf(3C)

getaccess_times (3C)

getattrat(3C)

getauthattr(3C)

getauthnam(3C)

getc(3C)

getc_unlocked(3C)

getchar(3C)

getchar_unlocked(3C)

getcpuid(3C)

getcwd(3C)

getdate(3C)

getdelim(3C)

getdtablesize(3C)

getenv(3C)

getexecattr(3C)

getexecname(3C)

getexecprof(3C)

getexecuser(3C)

getextmntent(3C)

getgrent(3C)

getgrent_r(3C)

getgrgid(3C)

getgrgid_r(3C)

getgrnam(3C)

getgrnam_r(3C)

gethomelgroup(3C)

gethostid(3C)

gethostname(3C)

gethrtime(3C)

gethrvtime(3C)

getline(3C)

getloadavg(3C)

getlogin(3C)

getlogin_r(3C)

getmntany(3C)

getmntent(3C)

getnetgrent(3C)

getnetgrent_r(3C)

getopt(3C)

getopt_clip(3C)

getopt_long(3C)

getopt_long_only(3C)

getpagesize(3C)

getpagesizes(3C)

getpass(3C)

getpassphrase(3C)

getpeerucred(3C)

getpriority(3C)

getprofattr(3C)

getproflist(3C)

getprofnam(3C)

getprogname(3C)

getpw(3C)

getpwent(3C)

getpwent_r(3C)

getpwnam(3C)

getpwnam_r(3C)

getpwuid(3C)

getpwuid_r(3C)

getrusage(3C)

gets(3C)

getspent(3C)

getspent_r(3C)

getspnam(3C)

getspnam_r(3C)

getsubopt(3C)

gettext(3C)

gettimeofday(3C)

gettxt(3C)

getuserattr(3C)

getuserattrnam(3C)

getusernam(3C)

getusershell(3C)

getuseruid(3C)

getutent(3C)

getutid(3C)

getutline(3C)

getutmp(3C)

getutmpx(3C)

getutxent(3C)

getutxid(3C)

getutxline(3C)

getvfsany(3C)

getvfsent(3C)

getvfsfile(3C)

getvfsspec(3C)

getw(3C)

getwc(3C)

getwchar(3C)

getwd(3C)

getwidth(3C)

getws(3C)

getzoneid(3C)

getzoneidbyname(3C)

getzonenamebyid(3C)

glob(3C)

globfree(3C)

gmtime(3C)

gmtime_r(3C)

grantpt(3C)

gsignal(3C)

hasmntopt(3C)

hcreate(3C)

hdestroy(3C)

hsearch(3C)

iconv(3C)

iconv_close(3C)

iconv_open(3C)

iconvctl(C)

iconvstr(3C)

imaxabs(3C)

imaxdiv(3C)

index(3C)

initgroups(3C)

initstate(3C)

innetgr(3C)

insque(3C)

is_system_labeled(3C)

isaexec(3C)

isalnum(3C)

isalpha(3C)

isascii(3C)

isastream(3C)

isatty(3C)

isblank(3C)

iscntrl(3C)

isdigit(3C)

isenglish(3C)

isgraph(3C)

isideogram(3C)

islower(3C)

isnand(3C)

isnanf(3C)

isnumber(3C)

isphonogram(3C)

isprint(3C)

ispunct(3C)

isspace(3C)

isspecial(3C)

isupper(3C)

iswalnum(3C)

iswalpha(3C)

iswascii(3C)

iswblank(3C)

iswcntrl(3C)

iswctype(3C)

iswdigit(3C)

iswgraph(3C)

iswlower(3C)

iswprint(3C)

iswpunct(3C)

iswspace(3C)

iswupper(3C)

iswxdigit(3C)

isxdigit(3C)

jrand48(3C)

killpg(3C)

kva_match(3C)

l64a(3C)

labs(3C)

lckpwdf(3C)

lcong48(3C)

ldiv(3C)

lfind(3C)

lfmt(3C)

lio_listio(3C)

llabs(3C)

lldiv(3C)

lltostr(3C)

localeconv(3C)

localelist(3C)

localelistfree(3C)

localtime(3C)

localtime_r(3C)

lockf(3C)

longjmp(3C)

lrand48(3C)

lsearch(3C)

madvise(3C)

major(3C)

makecontext(3C)

makedev(3C)

mallinfo(3MALLOC)

malloc(3C)

malloc(3MALLOC)

mallocctl(3MALLOC)

mallopt(3MALLOC)

mapmalloc(3MALLOC)

match_execattr(3C)

mblen(3C)

mbrlen(3C)

mbrtowc(3C)

mbsinit(3C)

mbsrtowcs(3C)

mbstowcs(3C)

mbtowc(3C)

memalign(3C)

memalign(3MALLOC)

membar_consumer(3C)

membar_enter(3C)

membar_exit(3C)

membar_ops(3C)

membar_producer(3C)

memccpy(3C)

memchr(3C)

memcmp(3C)

memcpy(3C)

memmem(3C)

memmove(3C)

memory(3C)

memset(3C)

minor(3C)

mkdtemp(3C)

mkfifo(3C)

mkfifoat(3C)

mkstemp(3C)

mkstemps(3C)

mktemp(3C)

mktime(3C)

mlock(3C)

mlockall(3C)

monitor(3C)

mq_close(3C)

mq_getattr(3C)

mq_notify(3C)

mq_open(3C)

mq_receive(3C)

mq_reltimedreceive_np(3C)

mq_reltimedsend_np(3C)

mq_send(3C)

mq_setattr(3C)

mq_timedreceive(3C)

mq_timedsend(3C)

mq_unlink(3C)

mrand48(3C)

msync(3C)

mtmalloc(3MALLOC)

munlock(3C)

munlockall(3C)

mutex_consistent(3C)

mutex_destroy(3C)

mutex_init(3C)

mutex_lock(3C)

mutex_trylock(3C)

mutex_unlock(3C)

nanosleep(3C)

ndbm(3C)

nftw(3C)

ngettext(3C)

nl_langinfo(3C)

nrand48(3C)

offsetof(3C)

opendir(3C)

openlog(3C)

pclose(3C)

perror(3C)

pfmt(3C)

plock(3C)

popen(3C)

port_alert(3C)

port_associate(3C)

port_create(3C)

port_dissociate(3C)

port_get(3C)

port_getn(3C)

port_send(3C)

port_sendn(3C)

posix_fadvise(3C)

posix_fallocate(3C)

posix_madvise(3C)

posix_memalign(3C)

posix_openpt(3C)

posix_spawn(3C)

posix_spawn_file_actions_addclose(3C)

posix_spawn_file_actions_addclosefrom_np(3C)

posix_spawn_file_actions_adddup2(3C)

posix_spawn_file_actions_addopen(3C)

posix_spawn_file_actions_destroy(3C)

posix_spawn_file_actions_init(3C)

posix_spawnattr_destroy(3C)

posix_spawnattr_getflags(3C)

posix_spawnattr_getpgroup(3C)

posix_spawnattr_getschedparam(3C)

posix_spawnattr_getschedpolicy(3C)

posix_spawnattr_getsigdefault(3C)

posix_spawnattr_getsigignore_np(3C)

posix_spawnattr_getsigmask(3C)

posix_spawnattr_init(3C)

posix_spawnattr_setflags(3C)

posix_spawnattr_setpgroup(3C)

posix_spawnattr_setschedparam(3C)

posix_spawnattr_setschedpolicy(3C)

posix_spawnattr_setsigdefault(3C)

posix_spawnattr_setsigignore_np(3C)

posix_spawnattr_setsigmask(3C)

posix_spawnp(3C)

printf(3C)

printstack(3C)

priv_addset(3C)

priv_allocset(3C)

priv_basicset(3C)

priv_copyset(3C)

priv_delset(3C)

priv_emptyset(3C)

priv_fillset(3C)

priv_freeset(3C)

priv_getbyname(3C)

priv_getbynum(3C)

priv_getsetbyname(3C)

priv_getsetbynum(3C)

priv_gettext(3C)

priv_ineffect(3C)

priv_intersect(3C)

priv_inverse(3C)

priv_isemptyset(3C)

priv_isequalset(3C)

priv_isfullset(3C)

priv_ismember(3C)

priv_issubset(3C)

priv_set(3C)

priv_set_to_str(3C)

priv_str_to_set(3C)

priv_union(3C)

pselect(3C)

pset_getloadavg(3C)

psiginfo(3C)

psignal(3C)

pthread_atfork(3C)

pthread_attr_destroy(3C)

pthread_attr_getdetachstate(3C)

pthread_attr_getguardsize(3C)

pthread_attr_getinheritsched(3C)

pthread_attr_getschedparam(3C)

pthread_attr_getschedpolicy(3C)

pthread_attr_getscope(3C)

pthread_attr_getstack(3C)

pthread_attr_getstackaddr(3C)

pthread_attr_getstacksize(3C)

pthread_attr_init(3C)

pthread_attr_setdetachstate(3C)

pthread_attr_setguardsize(3C)

pthread_attr_setinheritsched(3C)

pthread_attr_setschedparam(3C)

pthread_attr_setschedpolicy(3C)

pthread_attr_setscope(3C)

pthread_attr_setstack(3C)

pthread_attr_setstackaddr(3C)

pthread_attr_setstacksize(3C)

pthread_barrier_destroy(3C)

pthread_barrier_init(3C)

pthread_barrier_wait(3C)

pthread_barrierattr_destroy(3C)

pthread_barrierattr_getpshared(3C)

pthread_barrierattr_init(3C)

pthread_barrierattr_setpshared(3C)

pthread_cancel(3C)

pthread_cleanup_pop(3C)

pthread_cleanup_push(3C)

pthread_cond_broadcast(3C)

pthread_cond_destroy(3C)

pthread_cond_init(3C)

pthread_cond_reltimedwait_np(3C)

pthread_cond_signal(3C)

pthread_cond_timedwait(3C)

pthread_cond_wait(3C)

pthread_condattr_destroy(3C)

pthread_condattr_getclock(3C)

pthread_condattr_getpshared(3C)

pthread_condattr_init(3C)

pthread_condattr_setclock(3C)

pthread_condattr_setpshared(3C)

pthread_create(3C)

pthread_detach(3C)

pthread_equal(3C)

pthread_exit(3C)

pthread_getconcurrency(3C)

pthread_getschedparam(3C)

pthread_getspecific(3C)

pthread_join(3C)

pthread_key_create(3C)

pthread_key_create_once_np(3C)

pthread_key_delete(3C)

pthread_kill(3C)

pthread_mutex_consistent(3C)

pthread_mutex_destroy(3C)

pthread_mutex_getprioceiling(3C)

pthread_mutex_init(3C)

pthread_mutex_lock(3C)

pthread_mutex_reltimedlock_np(3C)

pthread_mutex_setprioceiling(3C)

pthread_mutex_timedlock(3C)

pthread_mutex_trylock(3C)

pthread_mutex_unlock(3C)

pthread_mutexattr_destroy(3C)

pthread_mutexattr_getprioceiling(3C)

pthread_mutexattr_getprotocol(3C)

pthread_mutexattr_getpshared(3C)

pthread_mutexattr_getrobust(3C)

pthread_mutexattr_gettype(3C)

pthread_mutexattr_init(3C)

pthread_mutexattr_setprioceiling(3C)

pthread_mutexattr_setprotocol(3C)

pthread_mutexattr_setpshared(3C)

pthread_mutexattr_setrobust(3C)

pthread_mutexattr_settype(3C)

pthread_once(3C)

pthread_rwlock_destroy(3C)

pthread_rwlock_init(3C)

pthread_rwlock_rdlock(3C)

pthread_rwlock_reltimedrdlock_np(3C)

pthread_rwlock_reltimedwrlock_np(3C)

pthread_rwlock_timedrdlock(3C)

pthread_rwlock_timedwrlock(3C)

pthread_rwlock_tryrdlock(3C)

pthread_rwlock_trywrlock(3C)

pthread_rwlock_unlock(3C)

pthread_rwlock_wrlock(3C)

pthread_rwlockattr_destroy(3C)

pthread_rwlockattr_getpshared(3C)

pthread_rwlockattr_init(3C)

pthread_rwlockattr_setpshared(3C)

pthread_self(3C)

pthread_setcancelstate(3C)

pthread_setcanceltype(3C)

pthread_setconcurrency(3C)

pthread_setschedparam(3C)

pthread_setschedprio(3C)

pthread_setspecific(3C)

pthread_sigmask(3C)

pthread_spin_destroy(3C)

pthread_spin_init(3C)

pthread_spin_lock(3C)

pthread_spin_trylock(3C)

pthread_spin_unlock(3C)

pthread_testcancel(3C)

ptrace(3C)

ptsname(3C)

putc(3C)

putc_unlocked(3C)

putchar(3C)

putchar_unlocked(3C)

putenv(3C)

putmntent(3C)

putpwent(3C)

puts(3C)

putspent(3C)

pututline(3C)

pututxline(3C)

putw(3C)

putwc(3C)

putwchar(3C)

putws(3C)

qeconvert(3C)

qfconvert(3C)

qgconvert(3C)

qsort(3C)

quadruple_to_decimal(3C)

raise(3C)

rand(3C)

rand_r(3C)

random(3C)

rbac_chkauth(3C)

rctl_walk(3C)

rctlblk_get_enforced_value(3C)

rctlblk_get_firing_time(3C)

rctlblk_get_global_action(3C)

rctlblk_get_global_flags(3C)

rctlblk_get_local_action(3C)

rctlblk_get_local_flags(3C)

rctlblk_get_privilege(3C)

rctlblk_get_recipient_pid(3C)

rctlblk_get_value(3C)

rctlblk_set_local_action(3C)

rctlblk_set_local_flags(3C)

rctlblk_set_privilege(3C)

rctlblk_set_recipient_pid(3C)

rctlblk_set_value(3C)

rctlblk_size(3C)

re_comp(3C)

re_exec(3C)

readdir(3C)

readdir_r(3C)

realloc(3C)

realloc(3MALLOC)

realpath(3C)

reboot(3C)

regcmp(3C)

regcomp(3C)

regerror(3C)

regex(3C)

regexec(3C)

regfree(3C)

remove(3C)

remque(3C)

resetmnttab(3C)

rewind(3C)

rewinddir(3C)

rindex(3C)

rw_rdlock(3C)

rw_tryrdlock(3C)

rw_trywrlock(3C)

rw_unlock(3C)

rw_wrlock(3C)

rwlock(3C)

rwlock_destroy(3C)

rwlock_init(3C)

scandir(3C)

scanf(3C)

sched_get_priority_max(3C)

sched_get_priority_min(3C)

sched_getparam(3C)

sched_getscheduler(3C)

sched_rr_get_interval(3C)

sched_setparam(3C)

sched_setscheduler(3C)

sched_yield(3C)

schedctl_exit(3C)

schedctl_init(3C)

schedctl_lookup(3C)

schedctl_start(3C)

schedctl_stop(3C)

seconvert(3C)

seed48(3C)

seekdir(3C)

select(3C)

sem_close(3C)

sem_destroy(3C)

sem_getvalue(3C)

sem_init(3C)

sem_open(3C)

sem_post(3C)

sem_reltimedwait_np(3C)

sem_timedwait(3C)

sem_trywait(3C)

sem_unlink(3C)

sem_wait(3C)

sema_destroy(3C)

sema_init(3C)

sema_post(3C)

sema_trywait(3C)

sema_wait(3C)

semaphore(3C)

setattrat(3C)

setauthattr(3C)

setbuf(3C)

setbuffer(3C)

setcat(3C)

setenv(3C)

setexecattr(3C)

setgrent(3C)

sethostname(3C)

setjmp(3C)

setkey(3C)

setlabel(3C)

setlinebuf(3C)

setlocale(3C)

setlogmask(3C)

setnetgrent(3C)

setpriority(3C)

setprofattr(3C)

setprogname(3C)

setpwent(3C)

setspent(3C)

setstate(3C)

settimeofday(3C)

setuserattr(3C)

setusershell(3C)

setutent(3C)

setutxent(3C)

setvbuf(3C)

sfconvert(3C)

sgconvert(3C)

shm_open(3C)

shm_unlink(3C)

sig2str(3C)

sigaddset(3C)

sigdelset(3C)

sigemptyset(3C)

sigfillset(3C)

sigfpe(3C)

sighold(3C)

sigignore(3C)

siginterrupt(3C)

sigismember(3C)

siglongjmp(3C)

signal(3C)

sigpause(3C)

sigqueue(3C)

sigrelse(3C)

sigset(3C)

sigsetjmp(3C)

sigsetops(3C)

sigstack(3C)

sigtimedwait(3C)

sigwaitinfo(3C)

single_to_decimal(3C)

sleep(3C)

smt_pause(3C)

snprintf(3C)

sprintf(3C)

srand(3C)

srand48(3C)

srandom(3C)

sscanf(3C)

ssignal(3C)

stack_getbounds(3C)

stack_inbounds(3C)

stack_setbounds(3C)

stack_violation(3C)

stdio(3C)

stpcpy(3C)

stpncpy(3C)

str2sig(3C)

strcasecmp(3C)

strcasestr(3C)

strcat(3C)

strchr(3C)

strchrnul(3C)

strcmp(3C)

strcoll(3C)

strcpy(3C)

strcspn(3C)

strdup(3C)

strdupa(3C)

strerror(3C)

strerror_r(3C)

strfmon(3C)

strftime(3C)

string(3C)

string_to_decimal(3C)

strlcat(3C)

strlcpy(3C)

strlen(3C)

strncasecmp(3C)

strncat(3C)

strncmp(3C)

strncpy(3C)

strndup(3C)

strndupa(3C)

strnlen(3C)

strnstr(3C)

strpbrk(3C)

strptime(3C)

strrchr(3C)

strsep(3C)

strsignal(3C)

strspn(3C)

strstr(3C)

strtod(3C)

strtof(3C)

strtoimax(3C)

strtok(3C)

strtok_r(3C)

strtol(3C)

strtold(3C)

strtoll(3C)

strtoul(3C)

strtoull(3C)

strtoumax(3C)

strtows(3C)

strxfrm(3C)

swab(3C)

swapcontext(3C)

swprintf(3C)

swscanf(3C)

sync_instruction_memory(3C)

sysconf(3C)

syslog(3C)

system(3C)

tcdrain(3C)

tcflow(3C)

tcflush(3C)

tcgetattr(3C)

tcgetpgrp(3C)

tcgetsid(3C)

tcsendbreak(3C)

tcsetattr(3C)

tcsetpgrp(3C)

td_event_addset(3C_DB)

td_event_delset(3C_DB)

td_event_emptyset(3C_DB)

td_event_fillset(3C_DB)

td_eventisempty(3C_DB)

td_eventismember(3C_DB)

td_init(3C_DB)

td_log(3C_DB)

td_sync_get_info(3C_DB)

td_sync_get_stats(3C_DB)

td_sync_setstate(3C_DB)

td_sync_waiters(3C_DB)

td_ta_clear_event(3C_DB)

td_ta_delete(3C_DB)

td_ta_enable_stats(3C_DB)

td_ta_event_addr(3C_DB)

td_ta_event_getmsg(3C_DB)

td_ta_get_nthreads(3C_DB)

td_ta_get_ph(3C_DB)

td_ta_get_stats(3C_DB)

td_ta_map_addr2sync(3C_DB)

td_ta_map_id2thr(3C_DB)

td_ta_map_lwp2thr(3C_DB)

td_ta_new(3C_DB)

td_ta_reset_stats(3C_DB)

td_ta_set_event(3C_DB)

td_ta_setconcurrency(3C_DB)

td_ta_sync_iter(3C_DB)

td_ta_sync_tracking_enable(3C_DB)

td_ta_thr_iter(3C_DB)

td_ta_tsd_iter(3C_DB)

td_thr_clear_event(3C_DB)

td_thr_dbresume(3C_DB)

td_thr_dbsuspend(3C_DB)

td_thr_event_enable(3C_DB)

td_thr_event_getmsg(3C_DB)

td_thr_get_info(3C_DB)

td_thr_getcxregs(3C_DB)

td_thr_getcxregsize(3C_DB)

td_thr_getfpregs(3C_DB)

td_thr_getgregs(3C_DB)

td_thr_getxregs(3C_DB)

td_thr_getxregsize(3C_DB)

td_thr_lockowner(3C_DB)

td_thr_set_event(3C_DB)

td_thr_setcxregs(3C_DB)

td_thr_setfpregs(3C_DB)

td_thr_setgregs(3C_DB)

td_thr_setprio(3C_DB)

td_thr_setsigpending(3C_DB)

td_thr_setxregs(3C_DB)

td_thr_sigsetmask(3C_DB)

td_thr_sleepinfo(3C_DB)

td_thr_tlsbase(3C_DB)

td_thr_tsd(3C_DB)

td_thr_validate(3C_DB)

tdelete(3C)

tdestroy(3C)

tell(3C)

telldir(3C)

tempnam(3C)

termios(3C)

textdomain(3C)

tfind(3C)

thr_continue(3C)

thr_create(3C)

thr_exit(3C)

thr_getconcurrency(3C)

thr_getprio(3C)

thr_getspecific(3C)

thr_join(3C)

thr_keycreate(3C)

thr_keycreate_once(3C)

thr_kill(3C)

thr_main(3C)

thr_min_stack(3C)

thr_self(3C)

thr_setconcurrency(3C)

thr_setprio(3C)

thr_setspecific(3C)

thr_sigsetmask(3C)

thr_stksegment(3C)

thr_suspend(3C)

thr_yield(3C)

timer_create(3C)

timer_delete(3C)

timer_getoverrun(3C)

timer_gettime(3C)

timer_settime(3C)

timeradd(3C)

timerclear(3C)

timercmp(3C)

timerisset(3C)

timersub(3C)

tmpfile(3C)

tmpnam(3C)

tmpnam_r(3C)

toascii(3C)

tolower(3C)

toupper(3C)

towctrans(3C)

towlower(3C)

towupper(3C)

truncate(3C)

tsearch(3C)

ttyname(3C)

ttyname_r(3C)

ttyslot(3C)

twalk(3C)

tzset(3C)

u8_strcmp(3C)

u8_textprep_str(3C)

u8_validate(3C)

ualarm(3C)

uconv_u16tou32(3C)

uconv_u16tou8(3C)

uconv_u32tou16(3C)

uconv_u32tou8(3C)

uconv_u8tou16(3C)

uconv_u8tou32(3C)

ucred_free(3C)

ucred_get(3C)

ucred_getegid(3C)

ucred_geteuid(3C)

ucred_getgroups(3C)

ucred_getlabel(3C)

ucred_getpflags(3C)

ucred_getpid(3C)

ucred_getprivset(3C)

ucred_getprojid(3C)

ucred_getrgid(3C)

ucred_getruid(3C)

ucred_getsgid(3C)

ucred_getsuid(3C)

ucred_getzoneid(3C)

ucred_size(3C)

ulckpwdf(3C)

ulltostr(3C)

umem_alloc(3MALLOC)

umem_cache_alloc(3MALLOC)

umem_cache_create(3MALLOC)

umem_cache_destroy(3MALLOC)

umem_cache_free(3MALLOC)

umem_debug(3MALLOC)

umem_free(3MALLOC)

umem_nofail_callback(3MALLOC)

umem_zalloc(3MALLOC)

ungetc(3C)

ungetwc(3C)

unlockpt(3C)

unordered(3C)

unsetenv(3C)

updwtmp(3C)

updwtmpx(3C)

usleep(3C)

utmpname(3C)

utmpxname(3C)

valloc(3C)

valloc(3MALLOC)

vasprintf(3C)

verr(3C)

verrx(3C)

vfprintf(3C)

vfscanf(3C)

vfwprintf(3C)

vfwscanf(3C)

vlfmt(3C)

vpfmt(3C)

vprintf(3C)

vscanf(3C)

vsnprintf(3C)

vsprintf(3C)

vsscanf(3C)

vswprintf(3C)

vswscanf(3C)

vsyslog(3C)

vwarn(3C)

vwarnx(3C)

vwprintf(3C)

vwscanf(3C)

wait(3C)

wait3(3C)

wait4(3C)

waitpid(3C)

walkcontext(3C)

warn(3C)

warnx(3C)

watchmalloc(3MALLOC)

watof(3C)

watoi(3C)

watol(3C)

watoll(3C)

wcpcpy(3C)

wcpncpy(3C)

wcrtomb(3C)

wcscasecmp(3C)

wcscat(3C)

wcschr(3C)

wcscmp(3C)

wcscoll(3C)

wcscpy(3C)

wcscspn(3C)

wcsdup(3C)

wcsetno(3C)

wcsftime(3C)

wcslen(3C)

wcsncasecmp(3C)

wcsncat(3C)

wcsncmp(3C)

wcsncpy(3C)

wcsnlen(3C)

wcspbrk(3C)

wcsrchr(3C)

wcsrtombs(3C)

wcsspn(3C)

wcsstr(3C)

wcstod(3C)

wcstof(3C)

wcstoimax(3C)

wcstok(3C)

wcstol(3C)

wcstold(3C)

wcstoll(3C)

wcstombs(3C)

wcstoul(3C)

wcstoull(3C)

wcstoumax(3C)

wcstring(3C)

wcswcs(3C)

wcswidth(3C)

wcsxfrm(3C)

wctob(3C)

wctomb(3C)

wctrans(3C)

wctrans_ja(3C)

wctype(3C)

wctype_ja(3C)

wcwidth(3C)

windex(3C)

wmemchr(3C)

wmemcmp(3C)

wmemcpy(3C)

wmemmove(3C)

wmemset(3C)

wordexp(3C)

wordfree(3C)

wprintf(3C)

wrindex(3C)

wscanf(3C)

wscasecmp(3C)

wscat(3C)

wschr(3C)

wscmp(3C)

wscol(3C)

wscoll(3C)

wscpy(3C)

wscspn(3C)

wsdup(3C)

wslen(3C)

wsncasecmp(3C)

wsncat(3C)

wsncmp(3C)

wsncpy(3C)

wspbrk(3C)

wsprintf(3C)

wsrchr(3C)

wsscanf(3C)

wsspn(3C)

wstod(3C)

wstok(3C)

wstol(3C)

wstostr(3C)

wstring(3C)

wsxfrm(3C)

pthread_getconcurrency(3C)

Name

pthread_getconcurrency, pthread_setconcurrency - get or set level of concurrency

Synopsis

cc –mt [ flag... ] file... [ library... ]
#include <pthread.h> 

int pthread_getconcurrency(void);
int pthread_setconcurrency(int new_level);

Description

Unbound threads in a process may or may not be required to be simultaneously active. By default, the threads implementation ensures that a sufficient number of threads are active so that the process can continue to make progress. While this conserves system resources, it may not produce the most effective level of concurrency.

The pthread_setconcurrency() function allows an application to inform the threads implementation of its desired concurrency level, new_level. The actual level of concurrency provided by the implementation as a result of this function call is unspecified.

If new_level is 0, it causes the implementation to maintain the concurrency level at its discretion as if pthread_setconcurrency() was never called.

The pthread_getconcurrency() function returns the value set by a previous call to the pthread_setconcurrency() function. If the pthread_setconcurrency() function was not previously called, this function returns 0 to indicate that the implementation is maintaining the concurrency level.

When an application calls pthread_setconcurrency() it is informing the implementation of its desired concurrency level. The implementation uses this as a hint, not a requirement.

If an implementation does not support multiplexing of user threads on top of several kernel scheduled entities, the pthread_setconcurrency() and pthread_getconcurrency() functions will be provided for source code compatibility but they will have no effect when called. To maintain the function semantics, the new_level parameter will be saved when pthread_setconcurrency() is called so that a subsequent call to pthread_getconcurrency() returns the same value.

Return Values

If successful, the pthread_setconcurrency() function returns 0. Otherwise, an error number is returned to indicate the error.

The pthread_getconcurrency() function always returns the concurrency level set by a previous call to pthread_setconcurrency(). If the pthread_setconcurrency() function has never been called, pthread_getconcurrency() returns 0.

Errors

The pthread_setconcurrency() function will fail if:

EINVAL

The value specified by new_level is negative.

EAGAIN

The value specific by new_level would cause a system resource to be exceeded.

Attributes

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE
ATTRIBUTE VALUE
Interface Stability
Committed
MT-Level
MT-Safe
Standard

See Also

pthread_create(3C), pthread_attr_init(3C), attributes(5), standards(5)