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74 lines
2.0 KiB
C
74 lines
2.0 KiB
C
/* Module used for improved aligned_alloc testing.
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Copyright (C) 2024-2025 Free Software Foundation, Inc.
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Copyright The GNU Toolchain Authors.
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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 <https://www.gnu.org/licenses/>. */
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#include <libc-symbols.h>
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#include <stdlib.h>
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#include <time.h>
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extern void *__libc_malloc (size_t size);
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extern void *__libc_calloc (size_t n, size_t size);
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__thread unsigned int seed = 0;
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int aligned_alloc_count = 0;
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int libc_malloc_count = 0;
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int libc_calloc_count = 0;
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static void *
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get_random_alloc (size_t size)
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{
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void *retval;
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size_t align;
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struct timespec tp;
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if (seed == 0)
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{
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clock_gettime (CLOCK_REALTIME, &tp);
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seed = tp.tv_nsec;
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}
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switch (rand_r (&seed) % 3)
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{
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case 1:
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/* Get a random alignment value. Biased towards the smaller
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* values up to 16384. Must be a power of 2. */
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align = 1 << rand_r (&seed) % 15;
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retval = aligned_alloc (align, size);
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aligned_alloc_count++;
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break;
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case 2:
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retval = __libc_calloc (1, size);
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libc_calloc_count++;
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break;
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default:
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retval = __libc_malloc (size);
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libc_malloc_count++;
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break;
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}
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return retval;
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}
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void *
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__random_malloc (size_t size)
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{
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return get_random_alloc (size);
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}
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strong_alias (__random_malloc, malloc)
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