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103 lines
2.5 KiB
C
103 lines
2.5 KiB
C
/* __pthread_destory_specific. Hurd version.
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Copyright (C) 2002-2024 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 <stdlib.h>
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#include <pt-internal.h>
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void
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__pthread_destroy_specific (struct __pthread *thread)
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{
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int i;
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int seen_one;
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/* Check if there is any thread specific data. */
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if (thread->thread_specifics == NULL)
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{
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for (i = 0; i < PTHREAD_STATIC_KEYS; i++)
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{
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if (thread->static_thread_specifics[i] != NULL)
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break;
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}
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if (i == PTHREAD_STATIC_KEYS)
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return;
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}
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__pthread_key_lock_ready ();
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/* Iterate and call the destructors on any thread specific data. */
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for (;;)
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{
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seen_one = 0;
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__pthread_mutex_lock (&__pthread_key_lock);
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for (i = 0; i < __pthread_key_count; i++)
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{
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void *value;
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if (__pthread_key_destructors[i] == PTHREAD_KEY_INVALID)
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continue;
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if (thread->thread_specifics == NULL)
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{
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if (i >= PTHREAD_STATIC_KEYS)
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break;
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value = thread->static_thread_specifics[i];
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}
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else
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{
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if (i >= thread->thread_specifics_size)
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break;
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value = thread->thread_specifics[i];
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}
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if (value != NULL)
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{
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if (thread->thread_specifics == NULL)
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thread->static_thread_specifics[i] = 0;
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else
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thread->thread_specifics[i] = 0;
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if (__pthread_key_destructors[i])
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{
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seen_one = 1;
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__pthread_key_destructors[i] (value);
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}
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}
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}
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__pthread_mutex_unlock (&__pthread_key_lock);
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if (!seen_one)
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break;
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/* This may take a very long time. Let those blocking on
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pthread_key_create or pthread_key_delete make progress. */
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__sched_yield ();
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}
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free (thread->thread_specifics);
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thread->thread_specifics = 0;
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thread->thread_specifics_size = 0;
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memset (&thread->static_thread_specifics, 0,
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sizeof (thread->static_thread_specifics));
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}
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