2013-02-02 20:13:36 +00:00
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.\" Copyright (C) 2012 Chandan Apsangi <chandan.jc@gmail.com>
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2013-02-02 22:13:57 +00:00
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.\" and Copyright (C) 2013 Michael Kerrisk <mtk.manpages@gmail.com>
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2013-02-02 20:13:36 +00:00
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.\"
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intro.1, _exit.2, access.2, alarm.2, alloc_hugepages.2, arch_prctl.2, bind.2, chdir.2, chmod.2, chown.2, chroot.2, clock_getres.2, clock_nanosleep.2, close.2, connect.2, delete_module.2, dup.2, execve.2, exit_group.2, faccessat.2, fchmodat.2, fchownat.2, fcntl.2, fork.2, fstatat.2, fsync.2, futimesat.2, get_robust_list.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getpagesize.2, getpid.2, getresuid.2, getrlimit.2, getrusage.2, gettid.2, gettimeofday.2, getuid.2, getunwind.2, idle.2, init_module.2, intro.2, iopl.2, kcmp.2, kexec_load.2, kill.2, link.2, linkat.2, llseek.2, lookup_dcookie.2, madvise.2, mincore.2, mkdirat.2, mknodat.2, mmap.2, mmap2.2, mount.2, mprotect.2, mq_getsetattr.2, msgctl.2, msgget.2, msgop.2, msync.2, nice.2, open.2, openat.2, pause.2, perfmonctl.2, personality.2, pipe.2, poll.2, posix_fadvise.2, prctl.2, pread.2, process_vm_readv.2, quotactl.2, read.2, readahead.2, readdir.2, readlinkat.2, readv.2, reboot.2, recvmmsg.2, remap_file_pages.2, rename.2, renameat.2, rmdir.2, rt_sigqueueinfo.2, select.2, select_tut.2, semctl.2, semget.2, semop.2, sendmmsg.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setresuid.2, setuid.2, setup.2, sgetmask.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigaltstack.2, signal.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, splice.2, stat.2, statfs.2, stime.2, subpage_prot.2, swapon.2, symlink.2, symlinkat.2, sync.2, sync_file_range.2, syscalls.2, sysctl.2, sysfs.2, syslog.2, tee.2, time.2, timer_create.2, timer_delete.2, timer_getoverrun.2, timer_settime.2, times.2, tkill.2, umask.2, umount.2, uname.2, unlink.2, unlinkat.2, uselib.2, ustat.2, utime.2, utimensat.2, vfork.2, vhangup.2, vm86.2, vmsplice.2, wait.2, wait4.2, write.2, CPU_SET.3, INFINITY.3, abort.3, abs.3, acos.3, acosh.3, adjtime.3, aio_init.3, asin.3, asinh.3, asprintf.3, assert.3, assert_perror.3, atan.3, atan2.3, atanh.3, atexit.3, atof.3, atoi.3, basename.3, bcmp.3, bcopy.3, bindresvport.3, bsd_signal.3, bsearch.3, bstring.3, byteorder.3, bzero.3, catgets.3, catopen.3, cbrt.3, ceil.3, clearenv.3, clock.3, clock_getcpuclockid.3, closedir.3, confstr.3, copysign.3, cos.3, cosh.3, ctermid.3, ctime.3, difftime.3, dirfd.3, div.3, dl_iterate_phdr.3, dprintf.3, drand48.3, drand48_r.3, dysize.3, ecvt.3, ecvt_r.3, end.3, endian.3, erf.3, erfc.3, ether_aton.3, euidaccess.3, exit.3, exp.3, exp10.3, exp2.3, expm1.3, fabs.3, fcloseall.3, fexecve.3, ffs.3, fgetgrent.3, fgetpwent.3, finite.3, flockfile.3, floor.3, fmod.3, fnmatch.3, fopencookie.3, fpathconf.3, fpurge.3, frexp.3, fseeko.3, ftok.3, futimes.3, gcvt.3, get_nprocs_conf.3, getaddrinfo.3, getaddrinfo_a.3, getauxval.3, getcontext.3, getcwd.3, getdate.3, getdirentries.3, getdtablesize.3, getenv.3, getfsent.3, getgrent.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getifaddrs.3, getipnodebyname.3, getline.3, getlogin.3, getmntent.3, getnetent.3, getnetent_r.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwnam.3, getrpcent_r.3, gets.3, getservent.3, getservent_r.3, getumask.3, getusershell.3, getutmp.3, getw.3, glob.3, gnu_get_libc_version.3, gsignal.3, hypot.3, if_nameindex.3, if_nametoindex.3, ilogb.3, index.3, inet.3, inet_ntop.3, inet_pton.3, infnan.3, initgroups.3, insque.3, intro.3, isalpha.3, isatty.3, j0.3, ldexp.3, localeconv.3, log.3, log10.3, log1p.3, log2.3, logb.3, lrint.3, lround.3, lsearch.3, lseek64.3, makecontext.3, makedev.3, mallinfo.3, malloc.3, malloc_get_state.3, malloc_info.3, malloc_stats.3, malloc_trim.3, malloc_usable_size.3, mallopt.3, matherr.3, mcheck.3, memccpy.3, memchr.3, memcmp.3, memcpy.3, memfrob.3, memmem.3, memmove.3, memset.3, mkdtemp.3, mkfifo.3, mkfifoat.3, mkstemp.3, mktemp.3, modf.3, mq_close.3, mq_getattr.3, mq_notify.3, mq_open.3, mq_receive.3, mq_send.3, mq_unlink.3, mtrace.3, on_exit.3, opendir.3, posix_fallocate.3, posix_memalign.3, posix_openpt.3, pow.3, pow10.3, profil.3, psignal.3, pthread_attr_init.3, pthread_attr_setaffinity_np.3, pthread_attr_setdetachstate.3, pthread_attr_setguardsize.3, pthread_attr_setinheritsched.3, pthread_attr_setschedparam.3, pthread_attr_setschedpolicy.3, pthread_attr_setscope.3, pthread_attr_setstack.3, pthread_attr_setstackaddr.3, pthread_attr_setstacksize.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_detach.3, pthread_equal.3, pthread_exit.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_join.3, pthread_kill.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setaffinity_np.3, pthread_setcancelstate.3, pthread_setconcurrency.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_setschedprio.3, pthread_sigmask.3, pthread_sigqueue.3, pthread_testcancel.3, pthread_tryjoin_np.3, pthread_yield.3, putenv.3, putpwent.3, puts.3, qecvt.3, qsort.3, raise.3, rand.3, random.3, random_r.3, re_comp.3, readdir.3, realpath.3, regex.3, remainder.3, remove.3, resolver.3, rewinddir.3, rint.3, round.3, scalb.3, scalbln.3, scandir.3, sched_getcpu.3, seekdir.3, sem_close.3, sem_destroy.3, sem_getvalue.3, sem_init.3, sem_open.3, sem_post.3, sem_unlink.3, sem_wait.3, setenv.3, setlocale.3, setlogmask.3, shm_open.3, siginterrupt.3, sigpause.3, sigqueue.3, sigset.3, sigsetops.3, sigvec.3, sigwait.3, sin.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stdio_ext.3, stpcpy.3, strcasecmp.3, strcat.3, strchr.3, strcmp.3, strcoll.3, strcpy.3, strdup.3, strerror.3, strfry.3, strftime.3, string.3, strlen.3, strpbrk.3, strptime.3, strsep.3, strsignal.3, strspn.3, strstr.3, strtok.3, strtol.3, strtoul.3, strverscmp.3, strxfrm.3, swab.3, sysconf.3, syslog.3, system.3, sysv_signal.3, tan.3, tanh.3, tcgetpgrp.3, tcgetsid.3, telldir.3, tempnam.3, timegm.3, timeradd.3, tmpfile.3, tmpnam.3, toascii.3, toupper.3, trunc.3, tsearch.3, ttyslot.3, tzset.3, ulimit.3, undocumented.3, unlocked_stdio.3, usleep.3, y0.3, cpuid.4, full.4, initrd.4, mouse.4, msr.4, sd.4, st.4, acct.5, core.5, services.5, slabinfo.5, aio.7, capabilities.7, credentials.7, feature_test_macros.7, hier.7, inotify.7, libc.7, locale.7, man-pages.7, man.7, math_error.7, mq_overview.7, numa.7, path_resolution.7, pipe.7, pthreads.7, pty.7, rtld-audit.7, sem_overview.7, shm_overview.7, sigevent.7, signal.7, suffixes.7, svipc.7, termio.7, time.7, udplite.7, units.7, uri.7, sln.8: s/LICENSE_START(verbatim)/LICENSE_START(VERBATIM)/
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-10 09:29:01 +00:00
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.\" %%%LICENSE_START(VERBATIM)
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2013-02-02 20:13:36 +00:00
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.\" Permission is granted to make and distribute verbatim copies of this
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.\" manual provided the copyright notice and this permission notice are
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.\" preserved on all copies.
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.\"
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.\" Permission is granted to copy and distribute modified versions of this
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.\" manual under the conditions for verbatim copying, provided that the
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.\" entire resulting derived work is distributed under the terms of a
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.\" permission notice identical to this one.
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.\"
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.\" Since the Linux kernel and libraries are constantly changing, this
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.\" manual page may be incorrect or out-of-date. The author(s) assume no
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.\" responsibility for errors or omissions, or for damages resulting from
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.\" the use of the information contained herein. The author(s) may not
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.\" have taken the same level of care in the production of this manual,
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.\" which is licensed free of charge, as they might when working
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.\" professionally.
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.\"
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.\" Formatted or processed versions of this manual, if unaccompanied by
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.\" the source, must acknowledge the copyright and authors of this work.
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intro.1, _exit.2, access.2, alarm.2, alloc_hugepages.2, arch_prctl.2, bind.2, chdir.2, chmod.2, chown.2, chroot.2, clock_getres.2, clock_nanosleep.2, close.2, connect.2, delete_module.2, dup.2, execve.2, exit_group.2, faccessat.2, fchmodat.2, fchownat.2, fcntl.2, fork.2, fstatat.2, fsync.2, futimesat.2, get_robust_list.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getpagesize.2, getpid.2, getresuid.2, getrlimit.2, getrusage.2, gettid.2, gettimeofday.2, getuid.2, getunwind.2, idle.2, init_module.2, intro.2, iopl.2, kcmp.2, kexec_load.2, kill.2, link.2, linkat.2, llseek.2, lookup_dcookie.2, madvise.2, mincore.2, mkdirat.2, mknodat.2, mmap.2, mmap2.2, mount.2, mprotect.2, mq_getsetattr.2, msgctl.2, msgget.2, msgop.2, msync.2, nice.2, open.2, openat.2, pause.2, perfmonctl.2, personality.2, pipe.2, poll.2, posix_fadvise.2, prctl.2, pread.2, process_vm_readv.2, quotactl.2, read.2, readahead.2, readdir.2, readlinkat.2, readv.2, reboot.2, recvmmsg.2, remap_file_pages.2, rename.2, renameat.2, rmdir.2, rt_sigqueueinfo.2, select.2, select_tut.2, semctl.2, semget.2, semop.2, sendmmsg.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setresuid.2, setuid.2, setup.2, sgetmask.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigaltstack.2, signal.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, splice.2, stat.2, statfs.2, stime.2, subpage_prot.2, swapon.2, symlink.2, symlinkat.2, sync.2, sync_file_range.2, syscalls.2, sysctl.2, sysfs.2, syslog.2, tee.2, time.2, timer_create.2, timer_delete.2, timer_getoverrun.2, timer_settime.2, times.2, tkill.2, umask.2, umount.2, uname.2, unlink.2, unlinkat.2, uselib.2, ustat.2, utime.2, utimensat.2, vfork.2, vhangup.2, vm86.2, vmsplice.2, wait.2, wait4.2, write.2, CPU_SET.3, INFINITY.3, abort.3, abs.3, acos.3, acosh.3, adjtime.3, aio_init.3, asin.3, asinh.3, asprintf.3, assert.3, assert_perror.3, atan.3, atan2.3, atanh.3, atexit.3, atof.3, atoi.3, basename.3, bcmp.3, bcopy.3, bindresvport.3, bsd_signal.3, bsearch.3, bstring.3, byteorder.3, bzero.3, catgets.3, catopen.3, cbrt.3, ceil.3, clearenv.3, clock.3, clock_getcpuclockid.3, closedir.3, confstr.3, copysign.3, cos.3, cosh.3, ctermid.3, ctime.3, difftime.3, dirfd.3, div.3, dl_iterate_phdr.3, dprintf.3, drand48.3, drand48_r.3, dysize.3, ecvt.3, ecvt_r.3, end.3, endian.3, erf.3, erfc.3, ether_aton.3, euidaccess.3, exit.3, exp.3, exp10.3, exp2.3, expm1.3, fabs.3, fcloseall.3, fexecve.3, ffs.3, fgetgrent.3, fgetpwent.3, finite.3, flockfile.3, floor.3, fmod.3, fnmatch.3, fopencookie.3, fpathconf.3, fpurge.3, frexp.3, fseeko.3, ftok.3, futimes.3, gcvt.3, get_nprocs_conf.3, getaddrinfo.3, getaddrinfo_a.3, getauxval.3, getcontext.3, getcwd.3, getdate.3, getdirentries.3, getdtablesize.3, getenv.3, getfsent.3, getgrent.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getifaddrs.3, getipnodebyname.3, getline.3, getlogin.3, getmntent.3, getnetent.3, getnetent_r.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwnam.3, getrpcent_r.3, gets.3, getservent.3, getservent_r.3, getumask.3, getusershell.3, getutmp.3, getw.3, glob.3, gnu_get_libc_version.3, gsignal.3, hypot.3, if_nameindex.3, if_nametoindex.3, ilogb.3, index.3, inet.3, inet_ntop.3, inet_pton.3, infnan.3, initgroups.3, insque.3, intro.3, isalpha.3, isatty.3, j0.3, ldexp.3, localeconv.3, log.3, log10.3, log1p.3, log2.3, logb.3, lrint.3, lround.3, lsearch.3, lseek64.3, makecontext.3, makedev.3, mallinfo.3, malloc.3, malloc_get_state.3, malloc_info.3, malloc_stats.3, malloc_trim.3, malloc_usable_size.3, mallopt.3, matherr.3, mcheck.3, memccpy.3, memchr.3, memcmp.3, memcpy.3, memfrob.3, memmem.3, memmove.3, memset.3, mkdtemp.3, mkfifo.3, mkfifoat.3, mkstemp.3, mktemp.3, modf.3, mq_close.3, mq_getattr.3, mq_notify.3, mq_open.3, mq_receive.3, mq_send.3, mq_unlink.3, mtrace.3, on_exit.3, opendir.3, posix_fallocate.3, posix_memalign.3, posix_openpt.3, pow.3, pow10.3, profil.3, psignal.3, pthread_attr_init.3, pthread_attr_setaffinity_np.3, pthread_attr_setdetachstate.3, pthread_attr_setguardsize.3, pthread_attr_setinheritsched.3, pthread_attr_setschedparam.3, pthread_attr_setschedpolicy.3, pthread_attr_setscope.3, pthread_attr_setstack.3, pthread_attr_setstackaddr.3, pthread_attr_setstacksize.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_detach.3, pthread_equal.3, pthread_exit.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_join.3, pthread_kill.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setaffinity_np.3, pthread_setcancelstate.3, pthread_setconcurrency.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_setschedprio.3, pthread_sigmask.3, pthread_sigqueue.3, pthread_testcancel.3, pthread_tryjoin_np.3, pthread_yield.3, putenv.3, putpwent.3, puts.3, qecvt.3, qsort.3, raise.3, rand.3, random.3, random_r.3, re_comp.3, readdir.3, realpath.3, regex.3, remainder.3, remove.3, resolver.3, rewinddir.3, rint.3, round.3, scalb.3, scalbln.3, scandir.3, sched_getcpu.3, seekdir.3, sem_close.3, sem_destroy.3, sem_getvalue.3, sem_init.3, sem_open.3, sem_post.3, sem_unlink.3, sem_wait.3, setenv.3, setlocale.3, setlogmask.3, shm_open.3, siginterrupt.3, sigpause.3, sigqueue.3, sigset.3, sigsetops.3, sigvec.3, sigwait.3, sin.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stdio_ext.3, stpcpy.3, strcasecmp.3, strcat.3, strchr.3, strcmp.3, strcoll.3, strcpy.3, strdup.3, strerror.3, strfry.3, strftime.3, string.3, strlen.3, strpbrk.3, strptime.3, strsep.3, strsignal.3, strspn.3, strstr.3, strtok.3, strtol.3, strtoul.3, strverscmp.3, strxfrm.3, swab.3, sysconf.3, syslog.3, system.3, sysv_signal.3, tan.3, tanh.3, tcgetpgrp.3, tcgetsid.3, telldir.3, tempnam.3, timegm.3, timeradd.3, tmpfile.3, tmpnam.3, toascii.3, toupper.3, trunc.3, tsearch.3, ttyslot.3, tzset.3, ulimit.3, undocumented.3, unlocked_stdio.3, usleep.3, y0.3, cpuid.4, full.4, initrd.4, mouse.4, msr.4, sd.4, st.4, acct.5, core.5, services.5, slabinfo.5, aio.7, capabilities.7, credentials.7, feature_test_macros.7, hier.7, inotify.7, libc.7, locale.7, man-pages.7, man.7, math_error.7, mq_overview.7, numa.7, path_resolution.7, pipe.7, pthreads.7, pty.7, rtld-audit.7, sem_overview.7, shm_overview.7, sigevent.7, signal.7, suffixes.7, svipc.7, termio.7, time.7, udplite.7, units.7, uri.7, sln.8: Global fix: Add LICENSE_START(verbatim)
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-10 09:28:40 +00:00
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.\" %%%LICENSE_END
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2013-02-02 20:13:36 +00:00
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.\"
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io_setup.2, perf_event_open.2, readdir.2, syscall.2, a64l.3, abs.3, asprintf.3, bindresvport.3, catgets.3, ceil.3, cimag.3, conj.3, crypt.3, drand48.3, encrypt.3, ether_aton.3, fcloseall.3, ferror.3, fmtmsg.3, getdate.3, getgrent.3, getgrnam.3, getpass.3, getpwent.3, getpwnam.3, getttyent.3, getusershell.3, localeconv.3, mblen.3, mbrlen.3, mbrtowc.3, modf.3, pthread_attr_setschedparam.3, pthread_attr_setschedpolicy.3, pthread_setname_np.3, ptsname.3, qecvt.3, re_comp.3, readdir.3, rexec.3, round.3, scalbln.3, stdio_ext.3, strerror.3, tmpnam.3, trunc.3, ttyname.3, ttyslot.3, inotify.7, man-pages.7, socket.7, tcp.7, udp.7: tstamp
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-06-21 11:35:03 +00:00
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.TH PTHREAD_SETNAME_NP 3 2013-06-21 "Linux" "Linux Programmer's Manual"
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2013-02-02 20:13:36 +00:00
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.SH NAME
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pthread_setname_np, pthread_getname_np \- set/get the name of a thread
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.SH SYNOPSIS
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.nf
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.BR "#define _GNU_SOURCE" " /* See feature_test_macros(7) */"
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.B #include <pthread.h>
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2013-04-02 07:12:53 +00:00
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.BI "int pthread_setname_np(pthread_t " thread ", const char *" name ");
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.BI "int pthread_getname_np(pthread_t " thread ,
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2013-02-02 20:34:47 +00:00
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.BI " const char *" name ", size_t " len );
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2013-02-02 20:13:36 +00:00
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.fi
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.sp
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Compile and link with \fI\-pthread\fP.
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.SH DESCRIPTION
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By default, all the threads created using
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2013-02-02 20:34:47 +00:00
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.BR pthread_create ()
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2013-02-02 20:13:36 +00:00
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inherit the program name.
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2013-02-02 20:34:47 +00:00
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The
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.BR pthread_setname_np ()
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2013-02-24 14:29:27 +00:00
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function can be used to set a unique name for a thread,
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2013-02-02 20:34:47 +00:00
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which can be useful for debugging
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2013-02-25 04:49:49 +00:00
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multithreaded applications.
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2013-02-02 20:13:36 +00:00
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The thread name is a meaningful C language string, whose length is
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2013-05-19 17:45:14 +00:00
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restricted to 16 characters, including the terminating null byte (\(aq\\0\(aq).
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2013-02-02 21:56:35 +00:00
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The
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.I thread
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argument specifies the thread whose name is to be changed;
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.I name
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specifies the new name.
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2013-02-02 20:13:36 +00:00
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The
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2013-02-02 20:34:47 +00:00
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.BR pthread_getname_np ()
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function can be used to retrieve the name of the thread.
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2013-02-02 21:56:35 +00:00
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The
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.I thread
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2013-02-24 14:32:00 +00:00
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argument specifies the thread whose name is to be retrieved.
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2013-02-02 21:56:35 +00:00
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The buffer
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.I name
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is used to return the thread name;
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.I len
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specifies the number of bytes available in
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.IR name .
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2013-02-02 20:34:47 +00:00
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The buffer specified by
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.I name
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2013-02-02 21:56:35 +00:00
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should be at least 16 characters in length.
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2013-02-02 20:13:36 +00:00
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The returned thread name in the output buffer will be null terminated.
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.SH RETURN VALUE
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On success, these functions return 0;
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on error, they return a nonzero error number.
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.SH ERRORS
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2013-02-02 22:01:00 +00:00
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The
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.BR pthread_setname_np ()
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2013-02-02 22:07:02 +00:00
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function can fail with the following error:
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2013-02-02 20:13:36 +00:00
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.TP
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.B ERANGE
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2013-02-02 20:34:47 +00:00
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The length of the string specified pointed to by
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.I name
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exceeds the allowed limit.
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.PP
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2013-02-02 22:07:02 +00:00
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The
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.BR pthread_getname_np ()
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function can fail with the following error:
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.TP
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.B ERANGE
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The buffer specified by
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.I name
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and
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.I len
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is too small to hold the thread name.
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.PP
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2013-02-02 20:34:47 +00:00
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If either of these functions fails to open
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.IR /proc/self/task/[tid]/comm ,
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then the call may fail with one of the errors described in
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.BR open (2).
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2013-02-02 21:55:07 +00:00
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.SH VERSIONS
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These functions first appeared in glibc in version 2.12.
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2013-02-02 21:54:49 +00:00
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.SH CONFORMING TO
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These functions are nonstandard GNU extensions.
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2013-02-02 20:13:36 +00:00
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.SH NOTES
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2013-02-02 20:34:47 +00:00
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.BR pthread_setname_np ()
|
2014-01-10 17:06:57 +00:00
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internally writes to the thread-specific
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,I comm
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file under the
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2013-02-02 20:13:36 +00:00
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.IR /proc
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filesystem:
|
2013-02-02 20:34:47 +00:00
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.IR /proc/self/task/[tid]/comm .
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.BR pthread_getname_np ()
|
2013-02-24 14:32:00 +00:00
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retrieves it from the same location.
|
2013-02-02 20:13:36 +00:00
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.SH EXAMPLE
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.PP
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The program below demonstrates the use of
|
2013-02-02 20:34:47 +00:00
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.BR pthread_setname_np ()
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and
|
2013-02-02 20:13:36 +00:00
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.BR pthread_getname_np ().
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The following shell session shows a sample run of the program:
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.in +4n
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.nf
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|
2013-02-02 20:34:47 +00:00
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.RB "$" " ./a.out"
|
2013-02-02 20:13:36 +00:00
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Created a thread. Default name is: a.out
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The thread name after setting it is THREADFOO.
|
2013-02-02 21:58:56 +00:00
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\fB^Z\fP # Suspend the program
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|
[1]+ Stopped ./a.out
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|
.RB "$ " "ps H -C a.out -o 'pid tid cmd comm'"
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|
PID TID CMD COMMAND
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|
5990 5990 ./a.out a.out
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5990 5991 ./a.out THREADFOO
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|
.RB "$ " "cat /proc/5990/task/5990/comm"
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a.out
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|
.RB "$ " "cat /proc/5990/task/5991/comm"
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|
THREADFOO
|
2013-02-02 20:13:36 +00:00
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|
.fi
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.in
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|
.SS Program source
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|
\&
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|
.nf
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|
#define _GNU_SOURCE
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|
#include <pthread.h>
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|
#include <stdio.h>
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|
#include <string.h>
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|
#include <unistd.h>
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|
#include <errno.h>
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|
#include <stdlib.h>
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|
#define NAMELEN 16
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|
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|
#define errExitEN(en, msg) \\
|
2013-02-02 21:00:40 +00:00
|
|
|
do { errno = en; perror(msg); exit(EXIT_FAILURE); \\
|
2013-02-02 20:13:36 +00:00
|
|
|
} while (0)
|
|
|
|
|
2013-02-02 21:02:47 +00:00
|
|
|
static void *
|
|
|
|
threadfunc(void *parm)
|
2013-02-02 20:13:36 +00:00
|
|
|
{
|
2013-02-02 21:00:40 +00:00
|
|
|
sleep(5); // allow main program to set the thread name
|
2013-02-02 20:13:36 +00:00
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2013-02-02 21:02:47 +00:00
|
|
|
int
|
|
|
|
main(int argc, char **argv)
|
2013-02-02 20:13:36 +00:00
|
|
|
{
|
|
|
|
pthread_t thread;
|
|
|
|
int rc;
|
|
|
|
char thread_name[NAMELEN];
|
|
|
|
|
|
|
|
rc = pthread_create(&thread, NULL, threadfunc, NULL);
|
2013-02-02 21:00:40 +00:00
|
|
|
if (rc != 0)
|
|
|
|
errExitEN(rc, "pthread_create");
|
2013-02-02 20:34:47 +00:00
|
|
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|
2013-02-02 20:13:36 +00:00
|
|
|
rc = pthread_getname_np(thread, thread_name, NAMELEN);
|
2013-02-02 21:00:40 +00:00
|
|
|
if (rc != 0)
|
|
|
|
errExitEN(rc, "pthread_getname_np");
|
2013-02-02 20:54:21 +00:00
|
|
|
|
2013-02-02 21:00:40 +00:00
|
|
|
printf("Created a thread. Default name is: %s\\n", thread_name);
|
2013-02-02 20:53:15 +00:00
|
|
|
rc = pthread_setname_np(thread, (argc > 1) ? argv[1] : "THREADFOO");
|
2013-02-02 21:00:40 +00:00
|
|
|
if (rc != 0)
|
|
|
|
errExitEN(rc, "pthread_setname_np");
|
2013-02-02 20:34:47 +00:00
|
|
|
|
2013-02-02 20:13:36 +00:00
|
|
|
sleep(2);
|
2013-02-12 03:52:43 +00:00
|
|
|
|
2013-02-02 21:57:22 +00:00
|
|
|
rc = pthread_getname_np(thread, thread_name,
|
|
|
|
(argc > 2) ? atoi(argv[1]) : NAMELEN);
|
2013-02-02 21:00:40 +00:00
|
|
|
if (rc != 0)
|
|
|
|
errExitEN(rc, "pthread_getname_np");
|
2013-02-02 20:13:36 +00:00
|
|
|
printf("The thread name after setting it is %s.\\n", thread_name);
|
2013-02-12 03:52:43 +00:00
|
|
|
|
2013-02-02 20:13:36 +00:00
|
|
|
rc = pthread_join(thread, NULL);
|
2013-02-02 21:00:40 +00:00
|
|
|
if (rc != 0)
|
|
|
|
errExitEN(rc, "pthread_join");
|
2013-02-12 03:52:43 +00:00
|
|
|
|
2013-02-02 20:13:36 +00:00
|
|
|
printf("Done\\n");
|
|
|
|
exit(EXIT_SUCCESS);
|
|
|
|
}
|
|
|
|
.fi
|
|
|
|
.SH SEE ALSO
|
|
|
|
.ad l
|
|
|
|
.nh
|
|
|
|
.BR prctl (2),
|
|
|
|
.BR pthread_create (3),
|
|
|
|
.BR pthreads (7)
|