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nptl: Move pthread_once and __pthread_once into libc

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And also the fork generation counter, __fork_generation.  This
eliminates the need for __fork_generation_pointer.

call_once remains in libpthread and calls the exported __pthread_once
symbol.

pthread_once and __pthread_once have been moved using
scripts/move-symbol-to-libc.py.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
This commit is contained in:
Florian Weimer
2021-04-21 19:49:50 +02:00
parent 4647ce82c7
commit 3fec7f18bf
70 changed files with 152 additions and 94 deletions
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15
nptl/pthread_once.c
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@ -19,7 +19,8 @@
#include "pthreadP.h"
#include <futex-internal.h>
#include <atomic.h>
#include <libc-lockP.h>
#include <shlib-compat.h>
unsigned long int __fork_generation attribute_hidden;
@ -132,7 +133,7 @@ __pthread_once_slow (pthread_once_t *once_control, void (*init_routine) (void))
}
int
__pthread_once (pthread_once_t *once_control, void (*init_routine) (void))
___pthread_once (pthread_once_t *once_control, void (*init_routine) (void))
{
/* Fast path. See __pthread_once_slow. */
int val;
@ -142,5 +143,11 @@ __pthread_once (pthread_once_t *once_control, void (*init_routine) (void))
else
return __pthread_once_slow (once_control, init_routine);
}
weak_alias (__pthread_once, pthread_once)
hidden_def (__pthread_once)
versioned_symbol (libc, ___pthread_once, __pthread_once, GLIBC_2_34);
libc_hidden_ver (___pthread_once, __pthread_once)
versioned_symbol (libc, ___pthread_once, pthread_once, GLIBC_2_34);
#if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_34)
compat_symbol (libpthread, ___pthread_once, __pthread_once, GLIBC_2_0);
compat_symbol (libpthread, ___pthread_once, pthread_once, GLIBC_2_0);
#endif