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Linux: Move timer helper routines from librt to libc

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This adds several temporary GLIBC_PRIVATE exports.  The symbol names
are changed so that they all start with __timer_.

It is now possible to invoke the fork handler directly, so
pthread_atfork is no longer necessary.  The associated error cannot
happen anymore, and cancellation handling can be removed from
the helper thread routine.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
This commit is contained in:
Florian Weimer
2021-06-25 10:51:31 +02:00
parent 1a5a653be2
commit 2c16cb88a6
7 changed files with 64 additions and 50 deletions
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10
sysdeps/unix/sysv/linux/timer_delete.c
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@ -42,12 +42,12 @@ timer_delete (timer_t timerid)
struct timer *kt = timerid_to_timer (timerid);
/* Remove the timer from the list. */
pthread_mutex_lock (&__active_timer_sigev_thread_lock);
if (__active_timer_sigev_thread == kt)
__active_timer_sigev_thread = kt->next;
pthread_mutex_lock (&__timer_active_sigev_thread_lock);
if (__timer_active_sigev_thread == kt)
__timer_active_sigev_thread = kt->next;
else
{
struct timer *prevp = __active_timer_sigev_thread;
struct timer *prevp = __timer_active_sigev_thread;
while (prevp->next != NULL)
if (prevp->next == kt)
{
@ -57,7 +57,7 @@ timer_delete (timer_t timerid)
else
prevp = prevp->next;
}
pthread_mutex_unlock (&__active_timer_sigev_thread_lock);
pthread_mutex_unlock (&__timer_active_sigev_thread_lock);
free (kt);
}