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2b51742531
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.
45 lines
1.7 KiB
C
45 lines
1.7 KiB
C
/* Copyright (C) 2002-2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <stdlib.h>
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#include "pthreadP.h"
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#include <shlib-compat.h>
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void
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___pthread_testcancel (void)
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{
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struct pthread *self = THREAD_SELF;
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int cancelhandling = THREAD_GETMEM (self, cancelhandling);
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if (self->cancelstate == PTHREAD_CANCEL_ENABLE
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&& (cancelhandling & CANCELED_BITMASK)
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&& !(cancelhandling & EXITING_BITMASK)
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&& !(cancelhandling & TERMINATED_BITMASK))
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{
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THREAD_SETMEM (self, result, PTHREAD_CANCELED);
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__do_cancel ();
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}
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}
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versioned_symbol (libc, ___pthread_testcancel, pthread_testcancel, GLIBC_2_34);
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versioned_symbol (libc, ___pthread_testcancel, __pthread_testcancel,
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GLIBC_PRIVATE);
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libc_hidden_ver (___pthread_testcancel, __pthread_testcancel)
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#if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_34)
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compat_symbol (libc, ___pthread_testcancel, pthread_testcancel, GLIBC_2_0);
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#endif
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