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POSIX allows res to be NULL.
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I used these shell commands:
../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")
and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.
I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah. I don't
know why I run into these diagnostics whereas others evidently do not.
remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
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ISO C2X adds a timespec_getres function alongside the C11
timespec_get, with functionality similar to that of POSIX clock_getres
(including allowing a NULL pointer to be passed to the function).
Implement this function for glibc, similarly to the implementation of
timespec_get.
This includes a basic test like that of timespec_get, but no
documentation in the manual, given that TIME_UTC and timespec_get
aren't documented in the manual at all. The handling of 64-bit time
follows that in timespec_get; people maintaining patch series for
64-bit time will need to update them accordingly (to export
__timespec_getres64, redirect calls in time.h and run the test for
_TIME_BITS=64).
Tested for x86_64 and x86, and (previous version; only testcase
differs) with build-many-glibcs.py.
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I used these shell commands:
../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")
and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
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Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
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In glibc 2.17, the functions clock_getcpuclockid, clock_getres,
clock_gettime, clock_nanosleep, and clock_settime were moved from
librt.so to libc.so, leaving compatibility stubs behind. Now that the
dynamic linker no longer insists on finding versioned symbols in the
same library that originally defined them, we do not need the stubs
anymore, and this means we don't need GLIBC_PRIVATE __-prefix aliases
for most of the functions anymore either. (clock_gettime still needs
one.) For ports added before 2.17, libc.so needs to provide two
symbol versions for each, the default at GLIBC_2.17 plus a compat
version matching what librt had.
While I'm at it, move the clock_*.c files and their tests from rt/ to
time/.
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This patch removes CLOCK_THREAD_CPUTIME_ID and CLOCK_PROCESS_CPUTIME_ID support
from clock_gettime and clock_settime generic implementation. For Linux, kernel
already provides supports through the syscall and Hurd HTL lacks
__pthread_clock_gettime and __pthread_clock_settime internal implementation.
As described in clock_gettime man-page [1] on 'Historical note for SMP
system', implementing CLOCK_{THREAD,PROCESS}_CPUTIME_ID with timer registers
is error-prone and susceptible to timing and accurary issues that the libc
can not deal without kernel support.
This allows removes unused code which, however, still incur in some runtime
overhead in thread creation (the struct pthread cpuclock_offset
initialization).
If hurd eventually wants to support them it should either either implement as
a kernel facility (or something related due its architecture) or in system
specific implementation.
Checked on aarch64-linux-gnu, x86_64-linux-gnu, and i686-linux-gnu. I also
checked on a i686-gnu build.
* nptl/Makefile (libpthread-routines): Remove pthread_clock_gettime and
pthread_clock_settime.
* nptl/pthreadP.h (__find_thread_by_id): Remove prototype.
* elf/dl-support.c [!HP_TIMING_NOAVAIL] (_dl_cpuclock_offset): Remove.
(_dl_non_dynamic_init): Remove _dl_cpuclock_offset setting.
* elf/rtld.c (_dl_start_final): Likewise.
* nptl/allocatestack.c (__find_thread_by_id): Remove function.
* sysdeps/generic/ldsodefs.h [!HP_TIMING_NOAVAIL] (_dl_cpuclock_offset):
Remove.
* sysdeps/mach/hurd/dl-sysdep.c [!HP_TIMING_NOAVAIL]
(_dl_cpuclock_offset): Remove.
* nptl/descr.h (struct pthread): Rename cpuclock_offset to
cpuclock_offset_ununsed.
* nptl/nptl-init.c (__pthread_initialize_minimal_internal): Remove
cpuclock_offset set.
* nptl/pthread_create.c (START_THREAD_DEFN): Likewise.
* sysdeps/nptl/fork.c (__libc_fork): Likewise.
* nptl/pthread_clock_gettime.c: Remove file.
* nptl/pthread_clock_settime.c: Likewise.
* sysdeps/unix/clock_gettime.c (hp_timing_gettime): Remove function.
[HP_TIMING_AVAIL] (realtime_gettime): Remove CLOCK_THREAD_CPUTIME_ID
and CLOCK_PROCESS_CPUTIME_ID support.
* sysdeps/unix/clock_settime.c (hp_timing_gettime): Likewise.
[HP_TIMING_AVAIL] (realtime_gettime): Likewise.
* sysdeps/posix/clock_getres.c (hp_timing_getres): Likewise.
[HP_TIMING_AVAIL] (__clock_getres): Likewise.
* sysdeps/unix/clock_nanosleep.c (CPUCLOCK_P, INVALID_CLOCK_P):
Likewise.
(__clock_nanosleep): Remove CPUCLOCK_P and INVALID_CLOCK_P usage.
[1] http://man7.org/linux/man-pages/man2/clock_gettime.2.html
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Clock_gettime, settime and getres implementations are unncessarily
complex due to using defines and C file inclusion. Simplify the
code by replacing the redundant defines and removing the inclusion,
making it much easier to understand. No functional changes.
* sysdeps/posix/clock_getres.c (__clock_getres): Cleanup.
* sysdeps/unix/clock_gettime.c (__clock_gettime): Cleanup.
* sysdeps/unix/clock_settime.c (__clock_settime): Cleanup.
* sysdeps/unix/sysv/linux/clock_getres.c (__clock_getres): Cleanup.
* sysdeps/unix/sysv/linux/clock_gettime.c (__clock_gettime): Cleanup.
* sysdeps/unix/sysv/linux/clock_settime.c (__clock_settime): Cleanup.
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* All files with FSF copyright notices: Update copyright dates
using scripts/update-copyrights.
* locale/programs/charmap-kw.h: Regenerated.
* locale/programs/locfile-kw.h: Likewise.
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* hurd/hurdauth.c (_S_msg_add_auth): Call __vm_allocate and
__vm_deallocate instead of vm_allocate and vm_deallocate.
* hurd/hurdmsg.c (_S_msg_set_env_variable): Call __setenv instead of
setenv.
* hurd/hurdprio.c (_hurd_priority_which_map): Call __geteuid instead
of geteuid.
* hurd/path-lookup.c (file_name_path_scan): Call __strdup instead of
strdup.
* hurd/siginfo.c: Include <libioP.h>.
(_hurd_siginfo_handler): Call _IO_puts instead of puts.
* hurd/xattr.c (_hurd_xattr_get, _hurd_xattr_set): Call __munmap instead of
munmap.
* io/fts.c (fts_build): Call __dirfd instead of dirfd.
* mach/devstream.c: Include <libioP.h>.
(dealloc_ref): Call __mach_port_deallocate instead of
mach_port_deallocate.
(mach_open_devstream): Call _IO_fopencookie instead of fopencookie.
Call __mach_port_deallocate instead of mach_port_deallocate.
* stdlib/canonicalize.c (__realpath): Call __pathconf instead of
pathconf.
* sysdeps/mach/hurd/ifreq.c (__ifreq): Call __munmap instead of
munmap.
* sysdeps/mach/hurd/ifreq.h (__if_freereq): Likewise.
* sysdeps/mach/hurd/ptrace.c (ptrace): Call __kill instead of kill.
* sysdeps/mach/hurd/sendfile64.c (sendfile64): Call __munmap instead
of munmap.
* sysdeps/mach/hurd/socketpair.c (__socketpair): Call __close instead
of close.
* sysdeps/posix/clock_getres.c (realtime_getres): Call __sysconf
instead of sysconf.
* sysdeps/pthread/timer_gettime.c (timer_gettime): Call
__clock_gettime instead of clock_gettime.
* sysdeps/pthread/timer_routines.c (thread_func): Likewise.
* sysdeps/pthread/timer_settime.c (timer_settime): Likewise.
* sysdeps/unix/bsd/gtty.c (gtty): Call __ioctl instead of ioctl.
* sysdeps/unix/bsd/stty.c (stty): Likewise.
* sysdeps/unix/bsd/tcflow.c (tcflow): Call __tcgetattr instead of
tcgetattr.
* sysdeps/unix/clock_nanosleep.c (__clock_nanosleep): Call
__clock_gettime and __nanosleep instead of clock_gettime and
nanosleep.
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* All files with FSF copyright notices: Update copyright dates
using scripts/update-copyrights.
* locale/programs/charmap-kw.h: Regenerated.
* locale/programs/locfile-kw.h: Likewise.
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__clock_gettime and other __clock_* functions could result in an extra
PLT reference within libc.so if it actually gets used. None of the
code currently uses them, which is why this probably went unnoticed.
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to prevent warning.
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* sysdeps/unix/sysv/linux/kernel-posix-cpu-timers.h: New file.
* sysdeps/unix/sysv/linux/clock_getcpuclockid.c: New file.
* sysdeps/unix/sysv/linux/ia64/clock_getcpuclockid.c
(HAS_CPUCLOCK): New macro.
(clock_getcpuclockid): Function removed.
#include the new linux file to define it instead.
* sysdeps/unix/clock_gettime.c [HP_TIMING_AVAIL] (hp_timing_gettime):
New function, broken out of ...
(clock_gettime) [HP_TIMING_AVAIL]: ... here. Call it.
(realtime_gettime): New function, broken out of ...
(clock_gettime) [! HANDLED_REALTIME]: ... here. Call it.
(clock_gettime) [SYSDEP_GETTIME_CPU]: Use new macro in default case.
* sysdeps/unix/sysv/linux/clock_gettime.c (SYSCALL_GETTIME): New macro.
(SYSDEP_GETTIME_CPUTIME): New macro.
(SYSDEP_GETTIME): Use both.
[! __ASSUME_POSIX_TIMERS] (maybe_syscall_gettime): New function, broken
out of ...
(SYSDEP_GETTIME): ... here. Use it.
[__NR_clock_gettime] (HANDLED_CPUTIME): Define it.
(SYSDEP_GETTIME_CPUTIME): New macro. Handle CPU timers by trying
kernel support and falling back to hp-timing code.
* sysdeps/posix/clock_getres.c
[HP_TIMING_AVAIL] (hp_timing_getres): New function, broken out of ...
(clock_getres) [HP_TIMING_AVAIL]: ... here. Call it.
(realtime_getres): New function, broken out of ...
(clock_getres) [! HANDLED_REALTIME]: ... here. Call it.
(clock_getres) [SYSDEP_GETRES_CPU]: Use new macro in default case.
* sysdeps/unix/sysv/linux/clock_getres.c (SYSCALL_GETRES): New macro.
(SYSDEP_GETRES_CPUTIME): New macro.
(SYSDEP_GETRES): Use both.
[! __ASSUME_POSIX_TIMERS] (maybe_syscall_getres): New function, broken
out of ...
(SYSDEP_GETRES): ... here. Use it.
[__NR_clock_getres] (HANDLED_CPUTIME): Define it.
(SYSDEP_GETRES_CPUTIME): New macro. Handle CPU timers by trying
kernel support and falling back to hp-timing code.
* sysdeps/unix/sysv/linux/clock_nanosleep.c: Handle
CLOCK_PROCESS_CPUTIME_ID and CLOCK_PROCESS_THREAD_ID specially,
translating to the kernel clockid_t for our own process/thread clock.
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* include/time.h: Define CLOCK_IDFIELD_SIZE.
* sysdeps/posix/clock_getres.c: Recognize thread CPU clock IDs.
* sysdeps/unix/clock_gettime.c: Likewise.
* sysdeps/unix/clock_settime.c: Likewise.
* sysdeps/unix/clock_nanosleep.c (CPUCLOCK_P): Adjust for new
clock id for thread CPU clocks.
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2003-03-02 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/bits/posix_opt.h: Define
_POSIX_MONOTONIC_CLOCK.
* linuxthreads/sysdeps/unix/sysv/linux/i386/bits/posix_opt.h: Likewise.
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2001-07-06 Paul Eggert <eggert@twinsun.com>
* manual/argp.texi: Remove ignored LGPL copyright notice; it's
not appropriate for documentation anyway.
* manual/libc-texinfo.sh: "Library General Public License" ->
"Lesser General Public License".
2001-07-06 Andreas Jaeger <aj@suse.de>
* All files under GPL/LGPL version 2: Place under LGPL version
2.1.
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* sysdeps/unix/i386/i586/clock_getres.c: Removed.
* sysdeps/unix/i386/i586/clock_gettime.c: Removed.
* sysdeps/unix/i386/i586/clock_nanosleep.c: Removed.
* sysdeps/unix/i386/i586/clock_settime.c: Removed.
* sysdeps/unix/i386/i586/cpuclock-init.h: Removed.
* sysdeps/generic/cpuclock-init.h: Removed.
* sysdeps/unix/i386/i686/Implies: Removed.
* sysdeps/unix/i386/i686/tempname.c: Removed.
* sysdeps/i386/i686/Versions: New file.
* sysdeps/unix/i386/i586/Versions: Removed.
* sysdeps/posix/clock_getres.c: If HP_TIMING_AVAIL is nonzero handle
CLOCK_PROCESS_CPUTIME_ID and CLOCK_THREAD_CPUTIME_ID.
* sysdeps/unix/clock_gettime.c: Likewise.
* sysdeps/unix/clock_nanosleep.c: Likewise.
* sysdeps/unix/clock_settime.c: Likewise.
* sysdeps/posix/tempname.c: Is HP_TIMING_AVAIL is nonzero define
RANDOM_BITS use CPU clock.
* sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/bits/time.h: New file.
* sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9b/bits/time.h: New file.
* sysdeps/unix/sysv/linux/sparc/sparc64/bits/time.h: New file.
* sysdeps/sparc/Versions: New file.
* elf/dl-support.c: Don't use cpuclock-init.h definitions, use
hp-timing.h definitions.
* sysdeps/generic/dl-sysdep.c: Likewise.
* include/libc-internal.h: Include hp-timing.h. Use hp_timing_t in
__get_clockfreq prototype.
* sysdeps/unix/sysv/linux/i386/get_clockfreq.c (__get_clockfreq):
Use hp_timing_t type.
* sysdeps/unix/sysv/linux/ia64/get_clockfreq.c: New file.
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* conform/data/sys/time.h-data: Allow sys/select.h.
* conform/data/sys/un.h-data: Fix typo.
* time/sys/time.h: Don't include all of <time.h>, just struct timeval.
* sysdeps/posix/clock_getres.c: Include <time.h> instead of
<sys/time.h>.
* sysdeps/unix/clock_nanosleep.c: Likewise.
* sysdeps/unix/i386/clock_getcpuclockid.c: Likewise.
* sysdeps/unix/i386/i586/clock_getres.c: Likewise.
* sysdeps/unix/clock_gettime.c: Also include <time.h>.
* sysdeps/unix/clock_settime.c: Likewise.
* sysdeps/generic/pselect.c: Include <stddef.h> for NULL.
* login/getutent.c: Likewise.
* login/getutid.c: Likewise.
* login/getutline.c: Likewise.
* socket/sys/un.h: Define SUN_LEN only if __USE_MISC.
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2000-04-12 Andreas Jaeger <aj@suse.de>
* sysdeps/unix/i386/i586/clock_gettime.c: Fix typo.
* sysdeps/unix/sysv/linux/i386/get_clockfreq.c: Include <string.h>
for memmem declaration.
* sysdeps/unix/clock_gettime.c (clock_gettime): Initialize retval
to -1.
* sysdeps/posix/clock_getres.c (clock_getres): Likewise.
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* sysdeps/unix/clock_gettime.c: New file.
* sysdeps/unix/clock_settime.c: New file.
* sysdeps/posix/clock_getres.c: New file.
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