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45 lines
1.7 KiB
C
45 lines
1.7 KiB
C
/* Initialize the signal state. Hurd on Mach version.
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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 <pt-internal.h>
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#include <hurd/signal.h>
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error_t
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__pthread_sigstate_init (struct __pthread *thread)
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{
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static int do_init_global;
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/* Mark the thread as a global signal receiver so as to conform with
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the pthread semantics. However, we must be careful. The first
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pthread created is the main thread, during libpthread initialization.
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We must not mark it, otherwise the sigprocmask call in
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__pthread_create would try to access _hurd_global_sigstate,
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which is not initialized yet. When glibc runs _hurdsig_init later
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on, the message thread is created, which must not be marked either. */
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if (do_init_global)
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{
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struct hurd_sigstate *ss = _hurd_thread_sigstate (thread->kernel_thread);
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_hurd_sigstate_set_global_rcv (ss);
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}
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else if (__pthread_num_threads >= 2)
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do_init_global = 1;
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return 0;
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}
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