62 lines
2.0 KiB
C
62 lines
2.0 KiB
C
/* Stack cache management for NPTL.
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Copyright (C) 2002-2022 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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#ifndef _NPTL_STACK_H
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#define _NPTL_STACK_H
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#include <nptl/descr.h>
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#include <ldsodefs.h>
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#include <list.h>
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#include <stdbool.h>
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/* Maximum size of the cache, in bytes. 40 MiB by default. */
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extern size_t __nptl_stack_cache_maxsize attribute_hidden;
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/* Check whether the stack is still used or not. */
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static inline bool
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__nptl_stack_in_use (struct pthread *pd)
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{
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return pd->tid <= 0;
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}
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/* Remove the stack ELEM from its list. */
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void __nptl_stack_list_del (list_t *elem);
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libc_hidden_proto (__nptl_stack_list_del)
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/* Add ELEM to a stack list. LIST can be either &GL (dl_stack_used)
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or &GL (dl_stack_cache). */
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void __nptl_stack_list_add (list_t *elem, list_t *list);
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libc_hidden_proto (__nptl_stack_list_add)
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/* Free allocated stack. */
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extern void __nptl_deallocate_stack (struct pthread *pd);
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libc_hidden_proto (__nptl_deallocate_stack)
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/* Free stacks until cache size is lower than LIMIT. */
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void __nptl_free_stacks (size_t limit) attribute_hidden;
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/* Compute the size of the static TLS area based on data from the
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dynamic loader. */
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static inline size_t
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__nptl_tls_static_size_for_stack (void)
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{
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return roundup (GLRO (dl_tls_static_size), GLRO (dl_tls_static_align));
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}
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#endif /* _NPTL_STACK_H */
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