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37 lines
1.4 KiB
C
37 lines
1.4 KiB
C
/* Determine whether block of given size can be allocated on the stack or not.
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Copyright (C) 2002-2017 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 License as
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published by the Free Software Foundation; either version 2.1 of the
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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; see the file COPYING.LIB. If
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not, see <http://www.gnu.org/licenses/>. */
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#include <alloca.h>
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#include <stdlib.h>
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#include <sys/param.h>
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#include <pthreadP.h>
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int
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__libc_alloca_cutoff (size_t size)
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{
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return size <= (MIN (__MAX_ALLOCA_CUTOFF,
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THREAD_GETMEM (THREAD_SELF, stackblock_size) / 4
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/* The main thread, before the thread library is
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initialized, has zero in the stackblock_size
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element. Since it is the main thread we can
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assume the maximum available stack space. */
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?: __MAX_ALLOCA_CUTOFF * 4));
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}
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libc_hidden_def (__libc_alloca_cutoff)
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