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166bb3eac3
The next commit is going to introduce a new implementation of THREAD_GSCOPE_WAIT which needs to access the list of threads. Since it must be usable from the dynamic laoder, we have to move the symbols for the list of threads into the loader. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20210915171110.226187-2-bugaevc@gmail.com> Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
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) 2002-2021 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 (GL (dl_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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