Go to file
Mike Crowe 99d01ffcc3 nptl: Add clockid parameter to futex timed wait calls
In preparation for adding POSIX clockwait variants of timedwait functions,
add a clockid_t parameter to futex_abstimed_wait functions and pass
CLOCK_REALTIME from all callers for the time being.

Replace lll_futex_timed_wait_bitset with lll_futex_clock_wait_bitset
which takes a clockid_t parameter rather than the magic clockbit.

	* sysdeps/nptl/lowlevellock-futex.h,
	sysdeps/unix/sysv/linux/lowlevellock-futex.h: Replace
	lll_futex_timed_wait_bitset with lll_futex_clock_wait_bitset that
	takes a clockid rather than a special clockbit.
	* sysdeps/nptl/lowlevellock-futex.h: Add
	lll_futex_supported_clockid so that client functions can check
	whether their clockid parameter is valid even if they don't
	ultimately end up calling lll_futex_clock_wait_bitset.
	* sysdeps/nptl/futex-internal.h,
	sysdeps/unix/sysv/linux/futex-internal.h
	(futex_abstimed_wait, futex_abstimed_wait_cancelable): Add
	clockid_t parameter to indicate which clock the absolute time
	passed should be measured against. Pass that clockid onto
	lll_futex_clock_wait_bitset. Add invalid clock as reason for
	returning -EINVAL.
	* sysdeps/nptl/futex-internal.h,
	sysdeps/unix/sysv/linux/futex-internal.h: Introduce
	futex_abstimed_supported_clockid so that client functions can check
	whether their clockid parameter is valid even if they don't
	ultimately end up calling futex_abstimed_wait.
	* nptl/pthread_cond_wait.c (__pthread_cond_wait_common): Remove
	code to calculate relative timeout for
	__PTHREAD_COND_CLOCK_MONOTONIC_MASK and just pass CLOCK_MONOTONIC
	or CLOCK_REALTIME as required to futex_abstimed_wait_cancelable.
	* nptl/pthread_rwlock_common (__pthread_rwlock_rdlock_full)
	(__pthread_wrlock_full), nptl/sem_waitcommon (do_futex_wait): Pass
	additional CLOCK_REALTIME to futex_abstimed_wait_cancelable.
	* nptl/pthread_mutex_timedlock.c (__pthread_mutex_timedlock):
	Switch to lll_futex_clock_wait_bitset and pass CLOCK_REALTIME

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2019-07-12 13:36:23 +00:00
argp Fix gcc 9 build errors for make xcheck. [BZ #24556] 2019-06-19 12:32:04 +02:00
assert Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
benchtests benchtests: Add logb{f} benchmark 2019-07-08 17:22:22 -03:00
bits Linux: Add the tgkill function 2019-05-14 22:55:51 +02:00
catgets Add some spaces before '('. 2019-02-27 13:55:45 +00:00
ChangeLog.old Add more bug numbers to historic ChangeLog entries 2019-04-11 09:32:08 +02:00
conform Remove obsolete, never-implemented XSI STREAMS declarations 2019-03-14 15:44:15 +01:00
crypt Break some lines before not after operators. 2019-02-22 01:32:36 +00:00
csu Update copyright dates not handled by scripts/update-copyrights. 2019-01-01 00:15:13 +00:00
ctype Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
debug libio: Use stdin consistently for input functions [BZ #24153] 2019-02-03 09:38:24 +01:00
dirent Break more lines before not after operators. 2019-02-25 13:19:19 +00:00
dlfcn dlfcn: Avoid one-element flexible array in Dl_serinfo [BZ #24166] 2019-06-19 10:13:50 +02:00
elf Call _dl_open_check after relocation [BZ #24259] 2019-07-01 12:23:22 -07:00
gmon Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
gnulib Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
grp nss: Turn __nss_database_lookup into a compatibility symbol 2019-05-15 15:07:49 +02:00
gshadow Break more lines before not after operators. 2019-02-25 13:19:19 +00:00
hesiod Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
htl Break more lines before not after operators. 2019-02-25 13:19:19 +00:00
hurd hurd: Fix comment style 2019-03-16 19:44:04 +01:00
iconv iconv: Use __twalk_r in __gconv_release_shlib 2019-06-04 14:13:44 +02:00
iconvdata Add some spaces before '('. 2019-02-27 13:55:45 +00:00
include Don't declare __malloc_check_init in <malloc.h> (bug 23352) 2019-07-10 15:04:05 +02:00
inet Add INADDR_ALLSNOOPERS_GROUP from Linux 5.1 to netinet/in.h. 2019-06-03 11:16:02 +00:00
intl intl: Do not return NULL on asprintf failure in gettext [BZ #24018] 2019-01-02 16:26:58 +01:00
io nftw: fill in stat buf for dangling links [BZ #23501] 2019-07-08 17:45:13 -04:00
libio Prepare vfprintf to use __printf_fp/__printf_fphex with float128 arg 2019-06-27 17:51:59 -03:00
locale locale/tst-locale-locpath: Fix arguments passing 2019-07-10 14:24:15 +08:00
localedata szl_PL locale: Fix a typo in the previous commit (bug 24652). 2019-06-24 22:17:58 +02:00
login Break some lines before not after operators. 2019-02-22 01:32:36 +00:00
mach Break some lines before not after operators. 2019-02-22 01:32:36 +00:00
malloc Don't declare __malloc_check_init in <malloc.h> (bug 23352) 2019-07-10 15:04:05 +02:00
manual Don't declare __malloc_check_init in <malloc.h> (bug 23352) 2019-07-10 15:04:05 +02:00
math math: Enable some math builtins for clang 2019-03-26 08:49:47 -03:00
mathvec Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
misc <sys/cdefs.h>: Inhibit macro expansion for __glibc_has_include 2019-06-14 16:19:14 +02:00
nis nss_nis, nss_nisplus: Remove RES_USE_INET6 handling 2019-05-16 17:23:23 +02:00
nptl nptl: Add clockid parameter to futex timed wait calls 2019-07-12 13:36:23 +00:00
nptl_db Move remaining nptl_db headers to sysdeps/nptl 2019-02-16 08:25:16 +01:00
nscd nss: Turn __nss_database_lookup into a compatibility symbol 2019-05-15 15:07:49 +02:00
nss nss_db: fix endent wrt NULL mappings [BZ #24695] [BZ #24696] 2019-07-10 14:51:18 -04:00
po Update translations 2019-01-25 22:05:42 +05:30
posix posix: Fix large mmap64 offset for mips64n32 (BZ#24699) 2019-07-10 16:52:50 -03:00
pwd Break more lines before not after operators. 2019-02-25 13:19:19 +00:00
resolv Fix build warnings in resolv/res_send.c 2019-07-02 14:07:44 +02:00
resource Break some lines before not after operators. 2019-02-22 01:32:36 +00:00
rt Remove __get_clockfreq 2019-03-22 16:52:29 -03:00
scripts build-many-glibcs.py: Add v4t variant for arm-linux-gnueabi 2019-07-02 13:14:58 +02:00
setjmp Break some lines before not after operators. 2019-02-22 01:32:36 +00:00
shadow Break more lines before not after operators. 2019-02-25 13:19:19 +00:00
signal Linux: Add the tgkill function 2019-05-14 22:55:51 +02:00
socket Fix a few typos in comments 2019-01-12 13:44:51 +00:00
soft-fp soft-fp: Properly check _FP_W_TYPE_SIZE [BZ #24066] 2019-01-07 09:04:39 -08:00
stdio-common Prepare vfprintf to use __printf_fp/__printf_fphex with float128 arg 2019-06-27 17:51:59 -03:00
stdlib malloc: make malloc fail with requests larger than PTRDIFF_MAX (BZ#23741) 2019-04-18 17:30:06 -03:00
string Fix gcc 9 build errors for make xcheck. [BZ #24556] 2019-06-19 12:32:04 +02:00
sunrpc Remove qualifier from function return type in tst-svc_register.c. 2019-02-15 13:45:19 +00:00
support nss_db: fix endent wrt NULL mappings [BZ #24695] [BZ #24696] 2019-07-10 14:51:18 -04:00
sysdeps nptl: Add clockid parameter to futex timed wait calls 2019-07-12 13:36:23 +00:00
sysvipc Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
termios Break some lines before not after operators. 2019-02-22 01:32:36 +00:00
time Make mktime etc. compatible with __time64_t 2019-04-30 09:02:17 -07:00
timezone Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
wcsmbs wcsmbs: Fix data race in __wcsmbs_clone_conv [BZ #24584] 2019-05-21 12:04:55 +02:00
wctype Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
.gitattributes Assume __NR_openat is always defined 2016-03-23 23:35:08 +01:00
.gitignore Add *.pyc to .gitignore 2015-05-18 15:26:26 +05:30
abi-tags Remove the bulk of the NaCl port. 2017-05-20 08:09:10 -04:00
aclocal.m4 LIBC_SLIBDIR_RTLDDIR: substitute arguments in single quotes 2018-01-25 17:20:28 +01:00
ChangeLog nptl: Add clockid parameter to futex timed wait calls 2019-07-12 13:36:23 +00:00
config.h.in S390: Add configure check to detect support for arch13. 2019-03-22 11:14:08 +01:00
config.make.in Make --bindir effective 2019-05-14 11:04:33 -03:00
configure elf/Makefile: Run IFUNC tests if binutils supports IFUNC 2019-02-27 13:21:55 -08:00
configure.ac elf/Makefile: Run IFUNC tests if binutils supports IFUNC 2019-02-27 13:21:55 -08:00
COPYING Update to latest versions of GPL-2.0 and LGPL-2.1 2013-09-09 12:52:48 +10:00
COPYING.LIB Update to latest versions of GPL-2.0 and LGPL-2.1 2013-09-09 12:52:48 +10:00
extra-lib.mk Rename cppflags-iterator.mk to libof-iterator.mk, remove extra-modules.mk. 2017-05-09 07:06:29 -04:00
gen-locales.mk Improve gen-locales.mk and gen-locale.sh to make test files with @ options work 2018-02-27 17:01:57 +01:00
INSTALL Extend BIND_NOW to installed programs with --enable-bind-now 2019-04-25 10:41:43 +02:00
libc-abis libc-abis: Define ABSOLUTE ABI [BZ #19818][BZ #23307] 2018-07-05 18:06:43 +01:00
libof-iterator.mk Rename cppflags-iterator.mk to libof-iterator.mk, remove extra-modules.mk. 2017-05-09 07:06:29 -04:00
LICENSES stdio-common/tst-printf.c: Remove part under a non-free license [BZ #23363] 2018-07-03 18:29:16 +02:00
MAINTAINERS Add MAINTAINERS 2017-05-11 13:38:30 -04:00
Makeconfig Makeconfig: Move -Wl,-rpath-link options before library references 2019-04-26 07:16:50 +02:00
Makefile Add check for missing wrapper headers 2019-02-16 08:25:16 +01:00
Makefile.in New make target to only build benchmark binaries 2016-04-20 10:23:28 +05:30
Makerules Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
NEWS NEWS: clarify copy_file_range 2019-07-08 17:11:41 -04:00
o-iterator.mk Fri Mar 17 12:58:37 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> 1995-03-17 18:42:51 +00:00
README Add C-SKY port 2018-12-21 09:48:04 +08:00
Rules Use a proper C tokenizer to implement the obsolete typedefs test. 2019-03-13 09:39:43 -04:00
shlib-versions Extend NSS test suite 2017-07-17 15:52:44 -04:00
test-skeleton.c Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
version.h Open master for 2.30 development 2019-01-31 22:39:14 +05:30

This directory contains the sources of the GNU C Library.
See the file "version.h" for what release version you have.

The GNU C Library is the standard system C library for all GNU systems,
and is an important part of what makes up a GNU system.  It provides the
system API for all programs written in C and C-compatible languages such
as C++ and Objective C; the runtime facilities of other programming
languages use the C library to access the underlying operating system.

In GNU/Linux systems, the C library works with the Linux kernel to
implement the operating system behavior seen by user applications.
In GNU/Hurd systems, it works with a microkernel and Hurd servers.

The GNU C Library implements much of the POSIX.1 functionality in the
GNU/Hurd system, using configurations i[4567]86-*-gnu.

When working with Linux kernels, this version of the GNU C Library
requires Linux kernel version 3.2 or later.

Also note that the shared version of the libgcc_s library must be
installed for the pthread library to work correctly.

The GNU C Library supports these configurations for using Linux kernels:

	aarch64*-*-linux-gnu
	alpha*-*-linux-gnu
	arm-*-linux-gnueabi
	csky-*-linux-gnuabiv2
	hppa-*-linux-gnu
	i[4567]86-*-linux-gnu
	x86_64-*-linux-gnu	Can build either x86_64 or x32
	ia64-*-linux-gnu
	m68k-*-linux-gnu
	microblaze*-*-linux-gnu
	mips-*-linux-gnu
	mips64-*-linux-gnu
	powerpc-*-linux-gnu	Hardware or software floating point, BE only.
	powerpc64*-*-linux-gnu	Big-endian and little-endian.
	s390-*-linux-gnu
	s390x-*-linux-gnu
	riscv64-*-linux-gnu
	sh[34]-*-linux-gnu
	sparc*-*-linux-gnu
	sparc64*-*-linux-gnu

If you are interested in doing a port, please contact the glibc
maintainers; see http://www.gnu.org/software/libc/ for more
information.

See the file INSTALL to find out how to configure, build, and install
the GNU C Library.  You might also consider reading the WWW pages for
the C library at http://www.gnu.org/software/libc/.

The GNU C Library is (almost) completely documented by the Texinfo manual
found in the `manual/' subdirectory.  The manual is still being updated
and contains some known errors and omissions; we regret that we do not
have the resources to work on the manual as much as we would like.  For
corrections to the manual, please file a bug in the `manual' component,
following the bug-reporting instructions below.  Please be sure to check
the manual in the current development sources to see if your problem has
already been corrected.

Please see http://www.gnu.org/software/libc/bugs.html for bug reporting
information.  We are now using the Bugzilla system to track all bug reports.
This web page gives detailed information on how to report bugs properly.

The GNU C Library is free software.  See the file COPYING.LIB for copying
conditions, and LICENSES for notices about a few contributions that require
these additional notices to be distributed.  License copyright years may be
listed using range notation, e.g., 1996-2015, indicating that every year in
the range, inclusive, is a copyrightable year that would otherwise be listed
individually.