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nptl: Move call_once into libc

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The symbol was moved using scripts/move-symbol-to-libc.py.

This change also turns __pthread_once into a compatibility symbol
because after the call_once move, an internal call to __pthread_once
can be used.  This an adjustment to __libc_once: Outside libc (e.g.,
in nscd), it has to call pthread_once.  With __pthread_once as a
compatibility symbol, it is no longer to add a new GLIBC_2.34
version after the move from libpthread, and this commit removes
the new __pthread_once@@GLIBC_2.34 version.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Florian Weimer
2021-05-03 08:12:11 +02:00
parent ad201afe5c
commit 575295fc83
66 changed files with 88 additions and 69 deletions
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11
sysdeps/pthread/call_once.c
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@@ -17,11 +17,12 @@
<https://www.gnu.org/licenses/>. */
#include <stdalign.h>
#include <shlib-compat.h>
#include "thrd_priv.h"
void
call_once (once_flag *flag, void (*func)(void))
__call_once (once_flag *flag, void (*func)(void))
{
_Static_assert (sizeof (once_flag) == sizeof (pthread_once_t),
"sizeof (once_flag) != sizeof (pthread_once_t)");
@@ -29,3 +30,11 @@ call_once (once_flag *flag, void (*func)(void))
"alignof (once_flag) != alignof (pthread_once_t)");
__pthread_once ((pthread_once_t *) flag, func);
}
#if PTHREAD_IN_LIBC
versioned_symbol (libc, __call_once, call_once, GLIBC_2_34);
# if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_28, GLIBC_2_34)
compat_symbol (libpthread, __call_once, call_once, GLIBC_2_28);
# endif
#else /* !PTHREAD_IN_LIBC */
strong_alias (__call_once, call_once)
#endif