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726117e01b
Like hurd_thread_cancel does. * sysdeps/mach/hurd/htl/pt-docancel.c: Include <hurd/signal.h> (__pthread_do_cancel): Lock target thread's critical_section_lock and ss lock around thread mangling.
76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
/* Cancel a thread.
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Copyright (C) 2002-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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 <pthread.h>
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#include <hurd/signal.h>
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#include <pt-internal.h>
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#include <pthreadP.h>
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static void
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call_exit (void)
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{
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__pthread_exit (0);
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}
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int
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__pthread_do_cancel (struct __pthread *p)
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{
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mach_port_t ktid;
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int me;
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assert (p->cancel_pending == 1);
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assert (p->cancel_state == PTHREAD_CANCEL_ENABLE);
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__pthread_mutex_unlock (&p->cancel_lock);
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ktid = __mach_thread_self ();
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me = p->kernel_thread == ktid;
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__mach_port_deallocate (__mach_task_self (), ktid);
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if (me)
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call_exit ();
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else
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{
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error_t err;
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struct hurd_sigstate *ss = _hurd_thread_sigstate (p->kernel_thread);
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__spin_lock (&ss->critical_section_lock);
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__spin_lock (&ss->lock);
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err = __thread_suspend (p->kernel_thread);
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assert_perror (err);
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__spin_unlock (&ss->lock);
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err = __thread_abort (p->kernel_thread);
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assert_perror (err);
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err = __thread_set_pcsptp (p->kernel_thread,
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1, (void *) call_exit, 0, 0, 0, 0);
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assert_perror (err);
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err = __thread_resume (p->kernel_thread);
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assert_perror (err);
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_hurd_critical_section_unlock (ss);
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}
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return 0;
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}
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