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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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8
nptl/pthreadP.h
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@ -361,12 +361,10 @@ extern unsigned long int *__fork_generation_pointer attribute_hidden;
/* Register the generation counter in the libpthread with the libc. */
#ifdef TLS_MULTIPLE_THREADS_IN_TCB
extern void __libc_pthread_init (unsigned long int *ptr,
void (*reclaim) (void),
extern void __libc_pthread_init (void (*reclaim) (void),
const struct pthread_functions *functions);
#else
extern int *__libc_pthread_init (unsigned long int *ptr,
void (*reclaim) (void),
extern int *__libc_pthread_init (void (*reclaim) (void),
const struct pthread_functions *functions);
/* Variable set to a nonzero value either if more than one thread runs or ran,
@ -525,6 +523,7 @@ extern void *__pthread_getspecific (pthread_key_t key);
extern int __pthread_setspecific (pthread_key_t key, const void *value);
extern int __pthread_once (pthread_once_t *once_control,
void (*init_routine) (void));
libc_hidden_proto (__pthread_once)
extern int __pthread_atfork (void (*prepare) (void), void (*parent) (void),
void (*child) (void));
extern pthread_t __pthread_self (void);
@ -557,7 +556,6 @@ hidden_proto (__pthread_rwlock_unlock)
hidden_proto (__pthread_key_create)
hidden_proto (__pthread_getspecific)
hidden_proto (__pthread_setspecific)
hidden_proto (__pthread_once)
hidden_proto (__pthread_setcancelstate)
hidden_proto (__pthread_testcancel)
hidden_proto (__pthread_mutexattr_init)