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authorDevtools Arcadia <arcadia-devtools@yandex-team.ru>2022-02-07 18:08:42 +0300
committerDevtools Arcadia <arcadia-devtools@mous.vla.yp-c.yandex.net>2022-02-07 18:08:42 +0300
commit1110808a9d39d4b808aef724c861a2e1a38d2a69 (patch)
treee26c9fed0de5d9873cce7e00bc214573dc2195b7 /contrib/libs/hyperscan/src/nfa/limex_context.h
downloadydb-1110808a9d39d4b808aef724c861a2e1a38d2a69.tar.gz
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ref:cde9a383711a11544ce7e107a78147fb96cc4029
Diffstat (limited to 'contrib/libs/hyperscan/src/nfa/limex_context.h')
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+/*
+ * Copyright (c) 2015-2016, 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 context structures (NFAContext128 and friends) for the NFA.
+ */
+
+#ifndef LIMEX_CONTEXT_H
+#define LIMEX_CONTEXT_H
+
+#include "ue2common.h"
+#include "callback.h"
+#include "util/simd_utils.h" // for m128 etc
+
+// Runtime context structures.
+
+/* Note: The size of the context structures may vary from platform to platform
+ * (notably, for the Limex64 structure). As a result, information based on the
+ * size and other detail of these structures should not be written into the
+ * bytecode -- really, the details of the structure should not be accessed by
+ * the ue2 compile side at all.
+ */
+#ifdef __cplusplus
+#error ue2 runtime only file
+#endif
+
+/* cached_estate/esucc etc...
+ *
+ * If the exception state matches the cached_estate we will apply
+ * the or in the cached_esucc to the successor states rather than processing
+ * the exceptions.
+ *
+ * If the current exception state is a superset of the cached_estate, the
+ * cache is NOT used at all.
+ *
+ * The cache is updated when we see a different cacheable estate.
+ */
+
+#define GEN_CONTEXT_STRUCT(nsize, ntype) \
+struct ALIGN_CL_DIRECTIVE NFAContext##nsize { \
+ ntype s; /**< state bitvector (on entry/exit) */ \
+ ntype local_succ; /**< used by exception handling for large models */ \
+ ntype cached_estate; /* inited to 0 */ \
+ ntype cached_esucc; \
+ char cached_br; /**< cached_estate contains a br state */ \
+ const ReportID *cached_reports; \
+ union RepeatControl *repeat_ctrl; \
+ char *repeat_state; \
+ NfaCallback callback; \
+ void *context; \
+};
+
+GEN_CONTEXT_STRUCT(32, u32)
+#ifdef ARCH_64_BIT
+GEN_CONTEXT_STRUCT(64, u64a)
+#else
+GEN_CONTEXT_STRUCT(64, m128)
+#endif
+GEN_CONTEXT_STRUCT(128, m128)
+GEN_CONTEXT_STRUCT(256, m256)
+GEN_CONTEXT_STRUCT(384, m384)
+GEN_CONTEXT_STRUCT(512, m512)
+
+#undef GEN_CONTEXT_STRUCT
+
+#endif