1 /* Stack cache management for NPTL.
2 Copyright (C) 2002-2023 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
22 #include <nptl/descr.h>
27 /* Maximum size of the cache, in bytes. 40 MiB by default. */
28 extern size_t __nptl_stack_cache_maxsize attribute_hidden
;
30 /* Check whether the stack is still used or not. */
32 __nptl_stack_in_use (struct pthread
*pd
)
37 /* Remove the stack ELEM from its list. */
38 void __nptl_stack_list_del (list_t
*elem
);
39 libc_hidden_proto (__nptl_stack_list_del
)
41 /* Add ELEM to a stack list. LIST can be either &GL (dl_stack_used)
42 or &GL (dl_stack_cache). */
43 void __nptl_stack_list_add (list_t
*elem
, list_t
*list
);
44 libc_hidden_proto (__nptl_stack_list_add
)
46 /* Free allocated stack. */
47 extern void __nptl_deallocate_stack (struct pthread
*pd
);
48 libc_hidden_proto (__nptl_deallocate_stack
)
50 /* Free stacks until cache size is lower than LIMIT. */
51 void __nptl_free_stacks (size_t limit
) attribute_hidden
;
53 /* Compute the size of the static TLS area based on data from the
56 __nptl_tls_static_size_for_stack (void)
58 return roundup (GLRO (dl_tls_static_size
), GLRO (dl_tls_static_align
));
61 #endif /* _NPTL_STACK_H */