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nptl: Move cancel state out of cancelhandling

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Now that thread cancellation state is not accessed concurrently anymore,
it is possible to move it out the 'cancelhandling'.

The code is also simplified: CANCELLATION_P is replaced with a
internal pthread_testcancel call and the CANCELSTATE_BIT{MASK} is
removed.

With this behavior pthread_setcancelstate does not require to act on
cancellation if cancel type is asynchronous (is already handled either
by pthread_setcanceltype or by the signal handler).

Checked on x86_64-linux-gnu and aarch64-linux-gnu.
This commit is contained in:
Adhemerval Zanella
2020-03-31 15:43:25 -03:00
parent 26cfbb7162
commit 2b51742531
14 changed files with 34 additions and 63 deletions
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nptl/libc-cleanup.c
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@@ -79,7 +79,7 @@ __libc_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer)
cancelhandling = curval;
}
CANCELLATION_P (self);
__pthread_testcancel ();
}
}
libc_hidden_def (__libc_cleanup_pop_restore)