glibc/sysdeps/unix/sysv/linux/sparc/sparc64
Adhemerval Zanella c32c868ab8 posix: Add _Fork [BZ #4737]
Austin Group issue 62 [1] dropped the async-signal-safe requirement
for fork and provided a async-signal-safe _Fork replacement that
does not run the atfork handlers.  It will be included in the next
POSIX standard.

It allow to close a long standing issue to make fork AS-safe (BZ#4737).
As indicated on the bug, besides the internal lock for the atfork
handlers itself; there is no guarantee that the handlers itself will
not introduce more AS-safe issues.

The idea is synchronize fork with the required internal locks to allow
children in multithread processes to use mostly of standard function
(even though POSIX states only AS-safe function should be used).  On
signal handles, _Fork should be used intead and only AS-safe functions
should be used.

For testing, the new tst-_Fork only check basic usage.  I also added
a new tst-mallocfork3 which uses the same strategy to check for
deadlock of tst-mallocfork2 but using threads instead of subprocesses
(and it does deadlock if it replaces _Fork with fork).

[1] https://austingroupbugs.net/view.php?id=62
2021-06-28 15:55:56 -03:00
..
bits
Implies
Makefile
Versions Linux: Move timer_settime, __timer_settime64 from librt to libc 2021-06-28 09:51:01 +02:00
____longjmp_chk.S
__longjmp.S
__start_context.S
arch-syscall.h
bsd-_setjmp.S
bsd-setjmp.S
c++-types.data
clone.S
configure
configure.ac
dl-cache.h
getcontext.S
ipc_priv.h
jmp_buf-macros.h
kernel_stat.h
kstat_cp.h
ld.abilist
libBrokenLocale.abilist
libanl.abilist
libc.abilist posix: Add _Fork [BZ #4737] 2021-06-28 15:55:56 -03:00
libc_sigaction.c
libcrypt.abilist
libdl.abilist
libm.abilist
libnsl.abilist
libpthread.abilist
libresolv.abilist
librt.abilist Linux: Move timer_settime, __timer_settime64 from librt to libc 2021-06-28 09:51:01 +02:00
libthread_db.abilist
libutil.abilist
localplt.data
longjmp.S
makecontext.c
personality.c
pipe.S
register-dump.h
setcontext.S
setjmp.S
shlib-versions
sigcontextinfo.h
sigjmp.S
sigreturn_stub.S
sizes.h
swapcontext.c
syscall.S
syscalls.list
sysdep.h
timer_t_was_int_compat.h Linux: Define TIMER_T_WAS_INT_COMPAT in kernel-posix-timers.h 2021-06-28 09:51:00 +02:00
ucontext_i.h
vfork.S
wordexp.c
xstatconv.c