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f43cff3728
It's useful for more than just Vulkan. Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Christoph Pillmayer <christoph.pillmayer@arm.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36385>
45 lines
1.9 KiB
C
45 lines
1.9 KiB
C
/*
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* Copyright © 2025 Collabora, Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include <stdlib.h>
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#ifndef UTIL_STACK_ARRAY_H
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#define UTIL_STACK_ARRAY_H
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#define STACK_ARRAY_SIZE 8
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/* Sometimes gcc may claim -Wmaybe-uninitialized for the stack array in some
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* places it can't verify that when size is 0 nobody down the call chain reads
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* the array. Please don't try to fix it by zero-initializing the array here
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* since it's used in a lot of different places. An "if (size == 0) return;"
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* may work for you.
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*/
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#define STACK_ARRAY(type, name, size) \
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type _stack_##name[STACK_ARRAY_SIZE]; \
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type *const name = \
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((size) <= STACK_ARRAY_SIZE ? _stack_##name : (type *)malloc((size) * sizeof(type)))
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#define STACK_ARRAY_FINISH(name) \
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if (name != _stack_##name) free(name)
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#endif /* UTIL_STACK_ARRAY_H */
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