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https://github.com/VectorCamp/vectorscan.git
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110 lines
3.7 KiB
C
110 lines
3.7 KiB
C
/*
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* Copyright (c) 2018, Intel Corporation
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Intel Corporation nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/** \file
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* \brief Runtime functions for setting custom allocators.
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*/
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#include "ch.h"
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#include "ch_common.h"
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#include "ch_internal.h"
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#include "hs.h"
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#include "ue2common.h"
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#define default_malloc malloc
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#define default_free free
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ch_alloc_t ch_database_alloc = default_malloc;
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ch_alloc_t ch_misc_alloc = default_malloc;
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ch_alloc_t ch_scratch_alloc = default_malloc;
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ch_free_t ch_database_free = default_free;
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ch_free_t ch_misc_free = default_free;
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ch_free_t ch_scratch_free = default_free;
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static
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ch_alloc_t normalise_alloc(ch_alloc_t a) {
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if (!a) {
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return default_malloc;
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} else {
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return a;
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}
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}
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static
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ch_free_t normalise_free(ch_free_t f) {
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if (!f) {
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return default_free;
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} else {
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return f;
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}
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}
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HS_PUBLIC_API
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ch_error_t HS_CDECL ch_set_allocator(ch_alloc_t allocfunc,
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ch_free_t freefunc) {
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ch_set_database_allocator(allocfunc, freefunc);
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ch_set_misc_allocator(allocfunc, freefunc);
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ch_set_scratch_allocator(allocfunc, freefunc);
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// Set core Hyperscan alloc/free.
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hs_error_t ret = hs_set_allocator(allocfunc, freefunc);
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return ret;
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}
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HS_PUBLIC_API
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ch_error_t HS_CDECL ch_set_database_allocator(ch_alloc_t allocfunc,
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ch_free_t freefunc) {
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ch_database_alloc = normalise_alloc(allocfunc);
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ch_database_free = normalise_free(freefunc);
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// Set Hyperscan database alloc/free.
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return hs_set_database_allocator(allocfunc, freefunc);
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}
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HS_PUBLIC_API
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ch_error_t HS_CDECL ch_set_misc_allocator(ch_alloc_t allocfunc,
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ch_free_t freefunc) {
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ch_misc_alloc = normalise_alloc(allocfunc);
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ch_misc_free = normalise_free(freefunc);
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// Set Hyperscan misc alloc/free.
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return hs_set_misc_allocator(allocfunc, freefunc);
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}
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HS_PUBLIC_API
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ch_error_t HS_CDECL ch_set_scratch_allocator(ch_alloc_t allocfunc,
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ch_free_t freefunc) {
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ch_scratch_alloc = normalise_alloc(allocfunc);
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ch_scratch_free = normalise_free(freefunc);
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// Set Hyperscan scratch alloc/free.
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return hs_set_scratch_allocator(allocfunc, freefunc);
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}
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