Adhemerval Zanella 290db09546 nptl: Handle spurious EINTR when thread cancellation is disabled (BZ#29029) ... Some Linux interfaces never restart after being interrupted by a signal handler, regardless of the use of SA_RESTART [1]. It means that for pthread cancellation, if the target thread disables cancellation with pthread_setcancelstate and calls such interfaces (like poll or select), it should not see spurious EINTR failures due the internal SIGCANCEL. However recent changes made pthread_cancel to always sent the internal signal, regardless of the target thread cancellation status or type. To fix it, the previous semantic is restored, where the cancel signal is only sent if the target thread has cancelation enabled in asynchronous mode. The cancel state and cancel type is moved back to cancelhandling and atomic operation are used to synchronize between threads. The patch essentially revert the following commits: 8c1c0aae20 nptl: Move cancel type out of cancelhandling 2b51742531 nptl: Move cancel state out of cancelhandling 26cfbb7162 nptl: Remove CANCELING_BITMASK However I changed the atomic operation to follow the internal C11 semantic and removed the MACRO usage, it simplifies a bit the resulting code (and removes another usage of the old atomic macros). Checked on x86_64-linux-gnu, i686-linux-gnu, aarch64-linux-gnu, and powerpc64-linux-gnu. [1] https://man7.org/linux/man-pages/man7/signal.7.html Reviewed-by: Florian Weimer <fweimer@redhat.com> Tested-by: Aurelien Jarno <aurelien@aurel32.net> (cherry-picked from commit 404656009b)		2022-04-15 09:52:54 -03:00
..
bits
sys
_Fork.c	posix: Consolidate fork implementation	2021-06-24 10:02:06 -03:00
aio_misc.h	Linux: Move aio_init from librt into libc	2021-06-25 11:48:25 +02:00
dl-mutex.c	elf, nptl: Resolve recursive lock implementation early	2021-05-10 10:31:41 +02:00
dl-thread_gscope_wait.c
dl-tls_init_tp.c	nptl: Handle spurious EINTR when thread cancellation is disabled (BZ#29029)	2022-04-15 09:52:54 -03:00
dl-tunables.list	nptl: Add glibc.pthread.stack_cache_size tunable	2021-06-28 16:41:58 +02:00
fork.h	Linux: Move timer helper routines from librt to libc	2021-06-25 12:21:12 +02:00
futex-internal.h	linux: Only use 64-bit syscall if required for internal futex	2021-06-22 12:09:52 -03:00
gai_misc.h	resolv: Move libanl into libc (if libpthread is in libc)	2021-07-02 11:45:00 +02:00
Implies
internaltypes.h
jmp-unwind.c	nptl: Move pthreadP.h into sysdeps directory	2021-06-22 09:51:10 +02:00
libc_start_call_main.h	nptl: Move pthreadP.h into sysdeps directory	2021-06-22 09:51:10 +02:00
libc-lock.h
libc-lockP.h	nptl: Use internal low-level lock type for !IS_IN (libc)	2021-07-07 08:41:14 +02:00
lowlevellock-futex.h	nptl: Consolidate async cancel enable/disable implementation in libc	2021-05-05 17:19:32 +02:00
lowlevellock.h	nptl: Use out-of-line wake function in __libc_lock_unlock slow path	2021-07-09 10:59:22 +02:00
Makeconfig	Linux: Cleanups after librt move	2021-06-28 09:51:01 +02:00
Makefile	Linux: Move timer helper routines from librt to libc	2021-06-25 12:21:12 +02:00
malloc-machine.h
proc_service.h
pthread_atfork_compat.h	Consolidate pthread_atfork	2021-06-24 10:04:41 -03:00
pthread_early_init.h	nptl: Move pthreadP.h into sysdeps directory	2021-06-22 09:51:10 +02:00
pthread_mutex_conf.h
pthread-offsets.h
pthread.h	nptl: Fix type of pthread_mutexattr_getrobust_np, pthread_mutexattr_setrobust_np (bug 28036)	2021-09-21 07:15:25 +02:00
pthreadP.h	nptl: Handle spurious EINTR when thread cancellation is disabled (BZ#29029)	2022-04-15 09:52:54 -03:00
setxid.h	nptl: Move pthreadP.h into sysdeps directory	2021-06-22 09:51:10 +02:00
stdio-lock.h	libio: Assume _IO_lock_inexpensive	2021-06-04 09:54:52 -03:00
Subdirs
tcb-offsets.h
thread_db.h
timer_routines.h
tst-mqueue8x.c