mirror of git://sourceware.org/git/glibc.git
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 |
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.. | ||
bits | ||
Implies | ||
Makefile | ||
Versions | ||
____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 | ||
libc_sigaction.c | ||
libcrypt.abilist | ||
libdl.abilist | ||
libm.abilist | ||
libnsl.abilist | ||
libpthread.abilist | ||
libresolv.abilist | ||
librt.abilist | ||
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 | ||
ucontext_i.h | ||
vfork.S | ||
wordexp.c | ||
xstatconv.c |