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