thread_safety.5 (2010 09)

t
thread_safety(5) thread_safety(5)
NAME
thread_safety - list of libc, libpthread and libgen interfaces that are: Not Thread-Safe, Cancellation
Points, Cancel Safe, Async Signal Safe, or Async Cancel Safe
DESCRIPTION
Refer to this manpage when writing thread-safe applications using libc, libpthread and libgen interfaces.
This manpage gives the list of libc, libpthread and libgen interfaces that are: Not Thread-Safe, Cancella-
tion Points, Cancel Safe, Async Signal Safe, or Async Cancel Safe.
Interfaces That Are Not Thread-Safe
All the interfaces are thread-safe except:
bgets() bufsplit() copylist()
dbmclose() dbminit() delete()
endmntent() fattach() fdetach()
fetch() firstkey() getc_unlocked()
getchar_unlocked() getcontext() getopt()
inet_ntop() inet_pton() isastream()
makecontext() memcntl() nextkey()
putc_unlocked() putchar_unlocked() setcontext()
setmntent() store() strord()
strtold() system() swapcontext()
NOTE: If an interface has a
_r counterpart, then the _r interface is thread-safe, and the non-
_r is not
thread-safe.
Cancellation Points
Cancellation Points can occur when a thread is executing in the following interfaces:
_pututline() accept() aio_suspend()
bgets() bwtmpname() catclose()
catgets() catopen() close()
closedir() closelog() confstr()
connect() copylist() creat()
ctermid() cuserid() dbm_close()
dbm_delete() dbm_fetch() dbm_firstkey()
dbm_nextkey() dbm_open() dbm_store()
devnm() dial() endbwent()
endgrent() endpwent() endusershell()
endutent() endutsent() endutxent()
fclose() fcntl() fdatasync()
fdopen() fflush() fgetc()
fgetpos() fgetpwent() fgets()
fgetwc() fgetws() flock()
fopen() fprintf() fputc()
fputs() fputwc() fputws()
fread() freopen() fscanf()
fseek() fseeko() fsetpos()
fstatvfsdev() fsync() ftell()
ftello() ftw() fwprintf()
fwrite() fwscanf() getbwent()
getc() getc_unlocked() getchar()
getchar_unlocked() getcwd() getdate()
getgrent() getgrgid() getgrgid_r()
getgrnam() getgrnam_r() getlogin()
getlogin_r() getmsg() getpmsg()
getpwent() getpwnam() getpwnam_r()
getpwuid() getpwuid_r() gets()
gettxt() getusershell() getutent()
getutid() getutline() getutxent()
HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1