The syscall wrappers had to save and restore the syscall parameter
values and return value when calling the functions to enable/disable
cancellation were called. Not anymore. The called functions are
special and don't modify any unexpected registers.
It just happens that __pthread_enable_asynccancel doesn't modify the $rdi
register. But this isn't guaranteed. Hence we reload the register after
the calls.
The kernel from 2.3.31 on supports the rt_tgsigqueueinfo syscall.
Use it to implement the non-standard extension which, like
sigqueue, can pass additional data to the receiving thread.
* wcsmbs/wchar.h: mbsnrtowcs, open_wmemstream, wcpcpy, wcpncpy,
wcscasecmp, wcsdup, wcsncasecmp, wcsnlen, wcsnrtombs,
wcscasecmp_l, wcsncasecmp_l, wcscoll_l, and wcsxfrm_l.
* sysdeps/mach/hurd/bits/posix_opt.h: Reset value of macros from
200112L to 200809L.
* sysdeps/unix/sysv/linux/bits/posix_opt.h: Likewise.
* posix/getconf.c (vars): Add _SC_THREAD_ROBUST_PRIO_INHERIT and
_SC_THREAD_ROBUST_PRIO_PROTECT entries.
* bits/confname.h: Add _SC_THREAD_ROBUST_PRIO_INHERIT and
_SC_THREAD_ROBUST_PRIO_PROTECT.
* posix/unistd.h: fexecve is in POSIX 2008.
* time/time.h: strftime_l is in POSIX 2008.
* io/sys/stat.h: futimens is in POSIX 2008.
* string/strings.h: strcasecmp_l and strncasecmp_l are in POSIX 2008.
* string/string.h: stpcpy, stpncpy, strndup, strnlen, strsignal,
strcoll_l, strerror_l, and strxfrm_l are in POSIX 2008.
* stdlib/stdlib.h: mkdtemp is in POSIX 2008.
fast path here, for robust/PI/PP mutexes call
__pthread_mutex_lock_full. Don't use switch, instead use a series
of ifs according to their probability.
(__pthread_mutex_lock_full): New function.
* pthread_mutex_unlock.c: Include assert.h.
(__pthread_mutex_unlock_usercnt): Handle only the
fast path here, for robust/PI/PP mutexes call
__pthread_mutex_unlock_full. Don't use switch, instead use a series
of ifs according to their probability.
(__pthread_mutex_unlock_full): New function.
* sysdeps/unix/sysv/linux/pthread_mutex_cond_lock.c
(__pthread_mutex_lock_full): Define.
ESRCH return value.
(_nss_dns_gethostbyname4_r): Likewise.
* resolv/res_init.c (__res_vinit): Initialize nscount to zero.
* sysdeps/posix/getaddrinfo.c (gaih_inet): In case we use
gethostbyname4_r, we don't have a separate IPv6 status, so copy
the no_data variable.
__libc_clntudp_bufcreate_internal.
* include/sys/socket.h: Declare __have_sock_cloexec.
* socket/Makefile (aux): Add have_sock_cloexec.
* socket/have_sock_cloexec.c: New file.
* sunrpc/clnt_udp.h (clntudp_bufcreate): Now a wrapper around
__libc_clntudp_bufcreate.
(__libc_clntudp_bufcreate): Former implementation of clntudp_bufcreate
which takes an additional parameter. Create socket with non-blocking
mode and close-on-exec flag set, if wanted.
* sunrpc/Versions: Export __libc_clntudp_bufcreate@GLIBC_PRIVATE.
* nis/ypclnt.c (yp_bind_client_create): Use __libc_clntpudp_bufcreate
instead of clntudp_create. The socket has already the close-on-exec
flag set if SOCK_CLOEXEC is defined.
(__old_sem_wait): Fix argument to lll_futex_wait().
2008-04-14 David S. Miller <davem@davemloft.net>
* sysdeps/unix/sysv/linux/sparc/sparc32/sem_wait.c
(__old_sem_wait): Fix argument to lll_futex_wait().
<linux/limits.h> has defined it.
* sysdeps/unix/sysv/linux/sys/param.h: Define NCARGS to the legacy
ARG_MAX value and prevent ARG_MAX from being defined by the kernel
headers.
* sysdeps/unix/sysv/linux/sysconf.c: Define legacy_ARG_MAX and use
it instead of ARG_MAX.
of ASSEMBLER. nptl/
* sysdeps/unix/sysv/linux/ia64/dl-sysdep.h: Use __ASSEMBLER__ instead
of ASSEMBLER.
* sysdeps/unix/sysv/linux/i386/i686/dl-sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/i386/dl-sysdep.h: Likewise.
2008-03-18 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/dl-sysdep.h: Use __ASSEMBLER__ instead
of ASSEMBLER.
* sysdeps/unix/sysv/linux/lowlevellock.c (__lll_timedlock_wait):
If we time out, try one last time to lock the futex to avoid
losing a wakeup signal.
* sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: Likewise.
2007-10-23 Andreas Jaeger <aj@suse.de>
[BZ #5208]
* sysdeps/unix/sysv/linux/readahead.c (__readahead): Use
__LONG_LONG_PAIR to handle little endian byte order.
Suggested by abhishekrai@google.com
routine instead of an alias to __new_sem_post.
2007-10-17 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/i386/i486/sem_post.S (__old_sem_post): New
routine instead of an alias to __new_sem_post.
(__lll_robust_timedlock): Pass private as last argument to
__lll_robust_timedlock_wait.
(__lll_unlock): Fix a pasto.
2007-08-16 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/alpha/lowlevellock.h
(__lll_robust_timedlock): Pass private as last argument to
__lll_robust_timedlock_wait.
(__lll_unlock): Fix a pasto.
FE_UNDERFLOW on Niagara CPUs.
* sysdeps/sparc/fpu/feholdexcpt.c (feholdexcept): Clear all
exceptions.
* sysdeps/unix/sysv/linux/sparc/internaltypes.h (sparc_new_sem,
sparc_old_sem): New structs.
* sysdeps/unix/sysv/linux/sparc/sparc32/sem_wait.c
(__sem_wait_cleanup): New function.
(__new_sem_wait): Use sparc_new_sem structure. Bump and afterwards
decrease nwaiters. Register __sem_wait_cleanup as cleanup handler.
Pass isem->private ^ FUTEX_PRIVATE_FLAG as last argument to
lll_futex_wait.
(__old_sem_wait): New function.
* sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/sem_wait.c: Include
nptl/sysdeps/unix/sysv/linux/sparc version.
* sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/sem_timedwait.c:
Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/sem_post.c: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/sem_trywait.c
(__new_sem_trywait): Use sparc_old_sem structure.
* sysdeps/unix/sysv/linux/sparc/sparc32/sem_timedwait.c
(sem_timedwait): Use sparc_new_sem structure. Bump and afterwards
decrease nwaiters. Register __sem_wait_cleanup as cleanup handler.
Pass isem->private ^ FUTEX_PRIVATE_FLAG as last argument to
lll_futex_timed_wait.
* sysdeps/unix/sysv/linux/sparc/sparc32/sem_post.c (__new_sem_post):
Use sparc_new_sem structure. Only wake if nwaiters > 0. Pass
isem->private ^ FUTEX_PRIVATE_FLAG as last argument to
lll_futex_wake.
(__old_sem_post): New function.
* sysdeps/unix/sysv/linux/sparc/sem_wait.c: New file.
* sysdeps/unix/sysv/linux/sparc/sem_init.c: New file.
* sysdeps/unix/sysv/linux/sparc/sem_timedwait.c: New file.
* sysdeps/unix/sysv/linux/sparc/sem_post.c: New file.
* sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/sem_init.c: Remove.
* sysdeps/unix/sysv/linux/sparc/sparc32/sem_init.c: Remove.
2007-08-15 Jakub Jelinek <jakub@redhat.com>
* sysdeps/sparc/fpu/fraiseexcpt.c (__feraiseexcept): Fix raising
FE_UNDERFLOW on Niagara CPUs.
* sysdeps/sparc/fpu/feholdexcpt.c (feholdexcept): Clear all
exceptions.
(__pthread_cond_broadcast): Pass LLL_PRIVATE to lll_* and or
FUTEX_PRIVATE_FLAG into SYS_futex op if cv is process private.
Don't use FUTEX_CMP_REQUEUE if dep_mutex is not process private.
* sysdeps/unix/sysv/linux/shpthread_cond_signal.S
(__pthread_cond_signal): Pass LLL_PRIVATE to lll_* and or
FUTEX_PRIVATE_FLAG into SYS_futex op if cv is process private.
Use FUTEX_WAKE_OP.
* sysdeps/unix/sysv/linux/sh/pthread_cond_wait.S: Include
kernel-features.h and tcb-offsets.h.
(__pthread_cond_wait, __condvar_w_cleanup): Pass LLL_PRIVATE to
lll_* and or FUTEX_PRIVATE_FLAG into SYS_futex op if cv is
process private.
* sysdeps/unix/sysv/linux/sh/pthread_cond_timedwait.S: Include
tcb-offsets.h.
(__pthread_cond_timedwait, __condvar_tw_cleanup): Pass LLL_PRIVATE
to lll_* and or FUTEX_PRIVATE_FLAG into SYS_futex op if cv is
process private.
* sysdeps/unix/sysv/linux/sh/pthread_once.S: Use #ifdef
__ASSUME_PRIVATE_FUTEX instead of #if __ASSUME_PRIVATE_FUTEX.
* sysdeps/unix/sysv/linux/sh/pthread_rwlock_rdlock.S: Likewise.
* sysdeps/unix/sysv/linux/sh/pthread_rwlock_timedrdlock.S: Likewise.
* sysdeps/unix/sysv/linux/sh/pthread_rwlock_timedwrlock.S: Likewise.
* sysdeps/unix/sysv/linux/sh/pthread_rwlock_unlock.S: Likewise.
* sysdeps/unix/sysv/linux/sh/pthread_rwlock_wrlock.S: Likewise.
need to check GLRO(dl_hwcap) & HWCAP_SPARC_FLUSH on sparcv9.
(sparc_fixup_plt): Add do_flush argument instead of figuring whether
flush should be used or not inside of the function.
(elf_machine_fixup_plt, elf_machine_rela): Adjust caller.
* sysdeps/unix/sysv/linux/sparc/sparc32/clone.S (__clone,
__thread_start): Use HIDDEN_JUMPTARGET.
* sysdeps/unix/sysv/linux/sparc/sparc64/clone.S (__clone,
__thread_start): Likewise.
* sysdeps/unix/sysv/linux/sparc/sysdep.h (JUMPTARGET): Define.
nptl/
* sysdeps/unix/sysv/linux/lowlevellock.c: Comment fix.
* sysdeps/unix/sysv/linux/sparc/sparc32/lowlevellock.c
(__lll_timedwait_tid): Pass LLL_SHARED as 4th argument to
lll_futex_timed_wait.
* sysdeps/sparc/sparc32/dl-machine.h (elf_machine_runtime_setup): No
need to check GLRO(dl_hwcap) & HWCAP_SPARC_FLUSH on sparcv9.
(sparc_fixup_plt): Add do_flush argument instead of figuring whether
flush should be used or not inside of the function.
(elf_machine_fixup_plt, elf_machine_rela): Adjust caller.
* sysdeps/unix/sysv/linux/sparc/sparc32/clone.S (__clone,
__thread_start): Use HIDDEN_JUMPTARGET.
* sysdeps/unix/sysv/linux/sparc/sparc64/clone.S (__clone,
__thread_start): Likewise.
* sysdeps/unix/sysv/linux/sparc/sysdep.h (JUMPTARGET): Define.
Add libc_hidden_proto.
(STRTOF): Add libc_hidden_proto.
(___new_strtold_l, ___new_wcstold_l): New weak aliases.
(strtold_l, wcstold_l): Use them as second argument for
long_double_symbol. nptl/
* sysdeps/unix/sysv/linux/alpha/lowlevellock.h (__lll_unlock,
__lll_robust_unlock): Rewrite as macros instead of inline functions.
* sysdeps/unix/sysv/linux/s390/lowlevellock.h (__lll_unlock,
__lll_robust_unlock, __lll_wait_tid): Likewise.
2007-08-14 Jakub Jelinek <jakub@redhat.com>
* sysdeps/ieee754/ldbl-64-128/strtold_l.c (__STRTOF): Declare.
Add libc_hidden_proto.
(STRTOF): Add libc_hidden_proto.
(___new_strtold_l, ___new_wcstold_l): New weak aliases.
(strtold_l, wcstold_l): Use them as second argument for
long_double_symbol.
__ASSUME_PPOLL, __ASSUME_ATFCTS, __ASSUME_SET_ROBUST_LIST,
__ASSUME_UTIMENSAT, __ASSUME_FALLOCATE): Update per-arch conditions
when each feature was introduced.
* sysdeps/unix/sysv/linux/dl-vdso.c: Don't include dl-hash.h.
* sysdeps/unix/sysv/linux/dl-vdso.h: Don't include dl-hash.h if NDEBUG.
(CHECK_HASH): New macro.
(PREPARE_VERSION): Use it.
* sysdeps/unix/sysv/linux/pselect.c (__generic_pselect): Only provide
prototype if not __ASSUME_PSELECT.
* sysdeps/unix/sysv/linux/ppoll.c (__generic_ppoll): Only provide
prototype if not __ASSUME_PPOLL.
* sysdeps/unix/sysv/linux/dl-osinfo.h (ROUND): #undef after use.
* sysdeps/unix/clock_settime.c (freq, __pthread_clock_settime,
hp_timing_settime): Don't define or declare if HANDLED_CPUTIME
is defined.
