/* ********************************************************************************************** * File: maat_compile.c * Description: * Authors: Liu wentan * Date: 2022-10-31 * Copyright: (c) Since 2022 Geedge Networks, Ltd. All rights reserved. *********************************************************************************************** */ #include #include #include #include "maat_utils.h" #include "log/log.h" #include "maat.h" #include "uthash/utarray.h" #include "uthash/uthash.h" #include "bool_matcher.h" #include "igraph/igraph.h" #include "maat_compile.h" #include "maat_garbage_collection.h" #include "maat_group.h" #include "maat_ex_data.h" #include "maat_table.h" #include "alignment.h" #define MODULE_COMPILE module_name_str("maat.compile") #define MAX_TABLE_LINE_SIZE (1024 * 16) struct compile_schema { int compile_id_column; int rule_tag_column; int declared_clause_num_column; int set_flag; struct ex_data_schema ex_schema; struct table_manager *ref_tbl_mgr; struct log_handle *logger; int table_id; //ugly char table_name[NAME_MAX]; }; struct group2compile_schema { int group_id_column; int compile_id_column; int not_flag_column; int vtable_name_column; int clause_index_column; char associated_compile_table_id; int table_id;//ugly struct table_manager *ref_tbl_mgr; }; struct compile_item { long long compile_id; int declared_clause_num; }; struct group2compile_item { long long group_id; long long compile_id; int not_flag; int vtable_id; int clause_index; int associated_compile_table_id; }; struct maat_literal_id { long long group_id; long long vtable_id; }; struct maat_clause { long long clause_id; size_t n_literal_id; struct maat_literal_id *literal_ids; UT_hash_handle hh; }; struct literal_clause { struct maat_literal_id key; UT_array *clause_ids; UT_hash_handle hh; }; struct compile_rule { long long magic_num; long long compile_id; char *table_line; size_t table_line_len; struct compile_schema *ref_schema; void **ex_data; int declared_clause_num; char table_name[NAME_MAX]; }; struct group_reference { long long group_id; size_t ref_by_compile_cnt; UT_hash_handle hh; }; /* compile_runtime and group2compile_runtime share compile_hash_map */ struct compile_runtime { struct bool_matcher *bm; struct rcu_hash_table *cfg_hash_tbl; // struct maat_runtime *ref_maat_rt; time_t version; struct maat_clause *clause_by_literals_hash; struct literal_clause *literal2clause_hash; struct group_reference *group_ref_hash; pthread_mutex_t mutex; long long rule_num; long long update_err_cnt; struct bool_expr_match *expr_match_buff; struct maat_garbage_bin *ref_garbage_bin; struct log_handle *logger; }; struct group2compile_runtime { long long not_flag_group; long long rule_num; long long update_err_cnt; struct compile_runtime *ref_compile_rt; }; struct maat_clause_state { long long clause_id; UT_array *ut_literal_ids; char not_flag; // 1 byte char in_use; // 1 byte char pad[6]; // for 8 bytes alignment }; struct compile_sort_para { int declared_clause_num; long long compile_id; }; #define MAAT_COMPILE_MAGIC 0x4a5b6c7d struct maat_compile { unsigned int magic; long long compile_id; char table_name[NAME_MAX]; int actual_clause_num; int declared_clause_num; int not_clause_cnt; void *user_data; void (*user_data_free)(void *); UT_hash_handle hh; struct maat_clause_state clause_states[MAX_ITEMS_PER_BOOL_EXPR]; }; struct maat_internal_hit_path { int Nth_scan; int Nth_hit_item; long long item_id; long long group_id; int vtable_id; }; struct maat_compile_state { int thread_id; int Nth_scan; time_t compile_rt_version; size_t this_scan_hit_item_cnt; int not_clause_hitted_flag; size_t hit_path_cnt; UT_array *internal_hit_paths; UT_array *all_hit_clauses; UT_array *this_scan_hit_clauses; UT_array *all_hit_groups; }; UT_icd ut_literal_id_icd = {sizeof(struct maat_literal_id), NULL, NULL, NULL}; UT_icd ut_clause_id_icd = {sizeof(long long), NULL, NULL, NULL}; UT_icd ut_hit_group_icd = {sizeof(struct maat_hit_group), NULL, NULL, NULL}; UT_icd ut_hit_path_icd = {sizeof(struct maat_internal_hit_path), NULL, NULL, NULL}; struct maat_compile *maat_compile_new(long long compile_id) { struct maat_compile *compile = ALLOC(struct maat_compile, 1); compile->magic = MAAT_COMPILE_MAGIC; compile->compile_id = compile_id; for(int i = 0; i < MAX_ITEMS_PER_BOOL_EXPR; i++) { utarray_new(compile->clause_states[i].ut_literal_ids, &ut_literal_id_icd); compile->clause_states[i].in_use=0; compile->clause_states[i].clause_id = -1; } return compile; } int maat_compile_set(struct maat_compile *compile, const char *table_name, int declared_clause_num, void *user_data, void (*user_data_free)(void *)) { if (user_data != NULL && NULL == user_data_free) { return -1; } memset(compile->table_name, 0, sizeof(compile->table_name)); memcpy(compile->table_name, table_name, sizeof(compile->table_name)); compile->declared_clause_num = declared_clause_num; compile->user_data = user_data; compile->user_data_free = user_data_free; return 0; } void maat_compile_free(struct maat_compile *compile) { struct maat_clause_state *clause_state = NULL; if (compile->user_data && compile->user_data_free) { compile->user_data_free(compile->user_data); compile->user_data = NULL; } for (int i = 0; i < MAX_ITEMS_PER_BOOL_EXPR; i++) { clause_state = compile->clause_states + i; if (clause_state->ut_literal_ids != NULL) { utarray_free(clause_state->ut_literal_ids); clause_state->ut_literal_ids = NULL; } clause_state->in_use = 0; } compile->magic = 0; FREE(compile); } void rcu_maat_compile_free(void *user_ctx, void *data) { struct maat_compile *compile = (struct maat_compile *)data; maat_compile_free(compile); } int compile_table_set_ex_data_schema(struct compile_schema *compile_schema, int table_id, maat_ex_new_func_t *new_func, maat_ex_free_func_t *free_func, maat_ex_dup_func_t *dup_func, long argl, void *argp) { if (1 == compile_schema->set_flag) { log_error(compile_schema->logger, MODULE_COMPILE, "[%s:%d] compile table(table_id:%d)ex schema has been set already, can't set again", __FUNCTION__, __LINE__, table_id); return -1; } compile_schema->ex_schema.new_func = new_func; compile_schema->ex_schema.free_func = free_func; compile_schema->ex_schema.dup_func = dup_func; compile_schema->ex_schema.argl = argl; compile_schema->ex_schema.argp = argp; compile_schema->set_flag = 1; return 0; } void *compile_runtime_get_user_data(struct compile_runtime *compile_rt, long long compile_id) { struct maat_compile *compile = rcu_hash_find(compile_rt->cfg_hash_tbl, (char *)&compile_id, sizeof(long long)); void *ret = NULL; if (compile != NULL) { ret = compile->user_data; } return ret; } void *rule_ex_data_new(const char *table_name, int table_id, const char *table_line, struct ex_data_schema *ex_schema) { void *ex_data = NULL; ex_schema->new_func(table_name, table_id, NULL, table_line, &ex_data, ex_schema->argl, ex_schema->argp); return ex_data; } void rule_ex_data_free(int table_id, void **ex_data, const struct ex_data_schema *ex_schema) { ex_schema->free_func(table_id, ex_data, ex_schema->argl, ex_schema->argp); } void rule_ex_data_new_cb(void *user_data, void *param, const char *table_name, int table_id) { struct ex_data_schema *ex_schema = (struct ex_data_schema *)param; struct compile_rule *compile = (struct compile_rule *)user_data; void *ad = rule_ex_data_new(table_name, table_id, compile->table_line, ex_schema); *compile->ex_data = ad; } void compile_runtime_user_data_iterate(struct compile_runtime *compile_rt, void (*callback)(void *user_data, void *param, const char *table_name, int table_id), void *param, int table_id) { /* I'm in background_update_mutex, config update can't happen, so no need to lock cfg_hash_tbl */ void **data_array = NULL; size_t data_cnt = rcu_hash_list(compile_rt->cfg_hash_tbl, &data_array); for (size_t i = 0; i < data_cnt; i++) { struct maat_compile *compile = (struct maat_compile *)data_array[i]; if (compile->user_data) { callback(compile->user_data, param, compile->table_name, table_id); } } FREE(data_array); } void *compile_schema_new(cJSON *json, struct table_manager *tbl_mgr, const char *table_name, struct log_handle *logger) { struct compile_schema *compile_schema = ALLOC(struct compile_schema, 1); compile_schema->logger = logger; cJSON *custom_item = NULL; cJSON *item = cJSON_GetObjectItem(json, "table_id"); if (item != NULL && item->type == cJSON_Number) { compile_schema->table_id = item->valueint; } else { log_error(logger, MODULE_COMPILE, "[%s:%d] table: <%s> schema has no table_id column", __FUNCTION__, __LINE__, table_name); goto error; } item = cJSON_GetObjectItem(json, "custom"); if (item == NULL || item->type != cJSON_Object) { log_error(logger, MODULE_COMPILE, "[%s:%d] table: <%s> schema has no custom column", __FUNCTION__, __LINE__, table_name); goto error; } custom_item = cJSON_GetObjectItem(item, "compile_id"); if (custom_item != NULL && custom_item->type == cJSON_Number) { compile_schema->compile_id_column = custom_item->valueint; } else { log_error(logger, MODULE_COMPILE, "[%s:%d] table: <%s> schema has no compile_id column", __FUNCTION__, __LINE__, table_name); goto error; } custom_item = cJSON_GetObjectItem(item, "tags"); if (custom_item != NULL && custom_item->type == cJSON_Number) { compile_schema->rule_tag_column = custom_item->valueint; } custom_item = cJSON_GetObjectItem(item, "clause_num"); if (custom_item != NULL && custom_item->type == cJSON_Number) { compile_schema->declared_clause_num_column = custom_item->valueint; } else { log_error(logger, MODULE_COMPILE, "[%s:%d] table: <%s> schema has no clause_num column", __FUNCTION__, __LINE__, table_name); goto error; } compile_schema->ref_tbl_mgr = tbl_mgr; return compile_schema; error: FREE(compile_schema); return NULL; } void compile_schema_free(void *compile_schema) { FREE(compile_schema); } void *group2compile_schema_new(cJSON *json, struct table_manager *tbl_mgr, const char *table_name, struct log_handle *logger) { struct group2compile_schema *g2c_schema = ALLOC(struct group2compile_schema, 1); cJSON *custom_item = NULL; cJSON *item = cJSON_GetObjectItem(json, "table_id"); if (item != NULL && item->type == cJSON_Number) { g2c_schema->table_id = item->valueint; } else { log_error(logger, MODULE_COMPILE, "[%s:%d] table: <%s> schema has no table_id column", __FUNCTION__, __LINE__, table_name); goto error; } item = cJSON_GetObjectItem(json, "associated_compile_table_id"); if (item != NULL && item->type == cJSON_Number) { g2c_schema->associated_compile_table_id = item->valueint; } else { log_error(logger, MODULE_COMPILE, "[%s:%d] table: <%s> schema has no associated_compile_table_id column", __FUNCTION__, __LINE__, table_name); goto error; } item = cJSON_GetObjectItem(json, "custom"); if (item == NULL || item->type != cJSON_Object) { log_error(logger, MODULE_COMPILE, "[%s:%d] table: <%s> schema has no custom column", __FUNCTION__, __LINE__, table_name); goto error; } custom_item = cJSON_GetObjectItem(item, "group_id"); if (custom_item != NULL && custom_item->type == cJSON_Number) { g2c_schema->group_id_column = custom_item->valueint; } else { log_error(logger, MODULE_COMPILE, "[%s:%d] table: <%s> schema has no group_id column", __FUNCTION__, __LINE__, table_name); goto error; } custom_item = cJSON_GetObjectItem(item, "compile_id"); if (custom_item != NULL && custom_item->type == cJSON_Number) { g2c_schema->compile_id_column = custom_item->valueint; } else { log_error(logger, MODULE_COMPILE, "[%s:%d] table: <%s> schema has no compile_id column", __FUNCTION__, __LINE__, table_name); goto error; } custom_item = cJSON_GetObjectItem(item, "not_flag"); if (custom_item != NULL && custom_item->type == cJSON_Number) { g2c_schema->not_flag_column = custom_item->valueint; } else { log_error(logger, MODULE_COMPILE, "[%s:%d] table: <%s> schema has no not_flag column", __FUNCTION__, __LINE__, table_name); goto error; } custom_item = cJSON_GetObjectItem(item, "virtual_table_name"); if (custom_item != NULL && custom_item->type == cJSON_Number) { g2c_schema->vtable_name_column = custom_item->valueint; } else { log_error(logger, MODULE_COMPILE, "[%s:%d] table: <%s> schema has no virtual_table_name column", __FUNCTION__, __LINE__, table_name); goto error; } custom_item = cJSON_GetObjectItem(item, "clause_index"); if (custom_item != NULL && custom_item->type == cJSON_Number) { g2c_schema->clause_index_column = custom_item->valueint; } else { log_error(logger, MODULE_COMPILE, "[%s:%d] table: <%s> schema has no clause_index column", __FUNCTION__, __LINE__, table_name); goto error; } g2c_schema->ref_tbl_mgr = tbl_mgr; return g2c_schema; error: FREE(g2c_schema); return NULL; } void group2compile_schema_free(void *g2c_schema) { FREE(g2c_schema); } int group2compile_associated_compile_table_id(void *g2c_schema) { struct group2compile_schema *schema = (struct group2compile_schema *)g2c_schema; return schema->associated_compile_table_id; } int compile_accept_tag_match(struct compile_schema *schema, const char *line, const char *table_name, struct log_handle *logger) { size_t column_offset = 0; size_t column_len = 0; size_t n_tag = table_manager_accept_tags_count(schema->ref_tbl_mgr); if (schema->rule_tag_column > 0 && n_tag > 0) { int ret = get_column_pos(line, schema->rule_tag_column, &column_offset, &column_len); if (ret < 0) { log_error(logger, MODULE_COMPILE, "[%s:%d] table: <%s> has no rule_tag in line:%s", __FUNCTION__, __LINE__, table_name, line); return TAG_MATCH_ERR; } if (column_len > 2) { char *tag_str = ALLOC(char, column_len + 1); memcpy(tag_str, (line + column_offset), column_len); ret = table_manager_accept_tags_match(schema->ref_tbl_mgr, tag_str); FREE(tag_str); if (TAG_MATCH_ERR == ret) { log_error(logger, MODULE_COMPILE, "[%s:%d] table: <%s> has invalid tag format in line:%s", __FUNCTION__, __LINE__, table_name, line); return TAG_MATCH_ERR; } if (TAG_MATCH_UNMATCHED == ret) { log_error(logger, MODULE_COMPILE, "[%s:%d] table: <%s> has unmatched tag in line:%s", __FUNCTION__, __LINE__, table_name, line); return TAG_MATCH_UNMATCHED; } } } return TAG_MATCH_MATCHED; } struct compile_item * compile_item_new(const char *line, struct compile_schema *compile_schema, const char *table_name, struct log_handle *logger) { int ret = compile_accept_tag_match(compile_schema, line, table_name, logger); if (ret == TAG_MATCH_UNMATCHED) { return NULL; } size_t column_offset = 0; size_t column_len = 0; struct compile_item *compile_item = ALLOC(struct compile_item, 1); ret = get_column_pos(line, compile_schema->compile_id_column, &column_offset, &column_len); if (ret < 0) { log_error(logger, MODULE_COMPILE, "[%s:%d] table: <%s> has no compile_id in line:%s", __FUNCTION__, __LINE__, table_name, line); goto error; } compile_item->compile_id = atoll(line + column_offset); ret = get_column_pos(line, compile_schema->declared_clause_num_column, &column_offset, &column_len); if (ret < 0) { log_error(logger, MODULE_COMPILE, "[%s:%d] table: <%s> has no clause_num in line:%s", __FUNCTION__, __LINE__, table_name, line); goto error; } compile_item->declared_clause_num = atoi(line + column_offset); return compile_item; error: FREE(compile_item); return NULL; } void compile_item_free(struct compile_item *compile_item) { if (NULL == compile_item) { return; } FREE(compile_item); } void *compile_runtime_new(void *compile_schema, size_t max_thread_num, struct maat_garbage_bin *garbage_bin, struct log_handle *logger) { if (NULL == compile_schema) { return NULL; } struct compile_runtime *compile_rt = ALLOC(struct compile_runtime, 1); compile_rt->expr_match_buff = ALLOC(struct bool_expr_match, max_thread_num * MAX_SCANNER_HIT_COMPILE_NUM); compile_rt->version = time(NULL); compile_rt->cfg_hash_tbl = rcu_hash_new(rcu_maat_compile_free, NULL); compile_rt->clause_by_literals_hash = NULL; compile_rt->literal2clause_hash = NULL; compile_rt->group_ref_hash = NULL; compile_rt->logger = logger; compile_rt->ref_garbage_bin = garbage_bin; pthread_mutex_init(&(compile_rt->mutex), NULL); return compile_rt; } static void maat_clause_hash_free(struct maat_clause *clause_hash) { struct maat_clause *clause = NULL, *tmp_clause = NULL; HASH_ITER (hh, clause_hash, clause, tmp_clause) { HASH_DEL(clause_hash, clause); FREE(clause->literal_ids); clause->n_literal_id = 0; FREE(clause); } } static void literal2clause_hash_free(struct literal_clause *hash) { struct literal_clause *l2c_val = NULL, *tmp_l2c_val = NULL; HASH_ITER(hh, hash, l2c_val, tmp_l2c_val) { HASH_DEL(hash, l2c_val); if (l2c_val->clause_ids != NULL) { utarray_free(l2c_val->clause_ids); l2c_val->clause_ids = NULL; } FREE(l2c_val); } assert(hash == NULL); } static void group_reference_hash_free(struct group_reference *group_ref_hash) { struct group_reference *group_ref = NULL, *tmp_group_ref = NULL; HASH_ITER(hh, group_ref_hash, group_ref, tmp_group_ref) { HASH_DEL(group_ref_hash, group_ref); FREE(group_ref); } assert(group_ref_hash == NULL); } void garbage_literal2clause_hash_free(void *l2c_hash, void *arg) { literal2clause_hash_free((struct literal_clause *)l2c_hash); } void compile_runtime_free(void *compile_runtime) { if (NULL == compile_runtime) { return; } struct compile_runtime *compile_rt = (struct compile_runtime *)compile_runtime; if (compile_rt->bm != NULL) { bool_matcher_free(compile_rt->bm); compile_rt->bm = NULL; } if (compile_rt->cfg_hash_tbl != NULL) { rcu_hash_free(compile_rt->cfg_hash_tbl); compile_rt->cfg_hash_tbl = NULL; } if (compile_rt->literal2clause_hash != NULL) { literal2clause_hash_free(compile_rt->literal2clause_hash); compile_rt->literal2clause_hash = NULL; } if (compile_rt->clause_by_literals_hash != NULL) { maat_clause_hash_free(compile_rt->clause_by_literals_hash); compile_rt->clause_by_literals_hash = NULL; } pthread_mutex_lock(&(compile_rt->mutex)); if (compile_rt->group_ref_hash != NULL) { group_reference_hash_free(compile_rt->group_ref_hash); compile_rt->group_ref_hash = NULL; } pthread_mutex_unlock(&(compile_rt->mutex)); pthread_mutex_destroy(&(compile_rt->mutex)); if (compile_rt->expr_match_buff != NULL) { FREE(compile_rt->expr_match_buff); } FREE(compile_rt); } void compile_runtime_init(void *compile_runtime, struct maat_runtime *maat_rt) { if (NULL == compile_runtime) { return; } struct compile_runtime *compile_rt = (struct compile_runtime *)compile_runtime; compile_rt->ref_maat_rt = maat_rt; } void *group2compile_runtime_new(void *g2c_schema, size_t max_thread_num, struct maat_garbage_bin *garbage_bin, struct log_handle *logger) { if (NULL == g2c_schema) { return NULL; } struct group2compile_runtime *g2c_rt = ALLOC(struct group2compile_runtime, 1); return g2c_rt; } void group2compile_runtime_init(void *g2c_runtime, void *compile_runtime, void *g2g_runtime) { struct group2compile_runtime *g2c_rt = (struct group2compile_runtime *)g2c_runtime; g2c_rt->ref_compile_rt = (struct compile_runtime *)compile_runtime; } void group2compile_runtime_free(void *g2c_runtime) { if (NULL == g2c_runtime) { return; } FREE(g2c_runtime); } int is_valid_table_name(const char *str) { size_t integer_cnt=0; for (size_t i = 0; i < strlen(str); i++) { if (str[i] >= '0' && str[i] <= '9') { integer_cnt++; } } if (strlen(str) == 0 || integer_cnt == strlen(str) || 0 == strcasecmp(str, "null")) { return 0; } return 1; } struct group2compile_item * group2compile_item_new(const char *line, struct group2compile_schema *g2c_schema, const char *table_name, struct log_handle *logger) { size_t column_offset = 0; size_t column_len = 0; char vtable_name[NAME_MAX] = {0}; struct group2compile_item *g2c_item = ALLOC(struct group2compile_item, 1); int ret = get_column_pos(line, g2c_schema->group_id_column, &column_offset, &column_len); if (ret < 0) { log_error(logger, MODULE_COMPILE, "[%s:%d] g2c table:<%s> has no group_id in line:%s", __FUNCTION__, __LINE__, table_name, line); goto error; } g2c_item->group_id = atoll(line + column_offset); ret = get_column_pos(line, g2c_schema->compile_id_column, &column_offset, &column_len); if (ret < 0) { log_error(logger, MODULE_COMPILE, "[%s:%d] g2c table:<%s> has no compile_id in line:%s", __FUNCTION__, __LINE__, table_name, line); goto error; } g2c_item->compile_id = atoll(line + column_offset); ret = get_column_pos(line, g2c_schema->not_flag_column, &column_offset, &column_len); if (ret < 0) { log_error(logger, MODULE_COMPILE, "[%s:%d] g2c table:<%s> has no NOT_flag in line:%s ", __FUNCTION__, __LINE__, table_name, line); goto error; } g2c_item->not_flag = atoi(line + column_offset); ret = get_column_pos(line, g2c_schema->vtable_name_column, &column_offset, &column_len); if (ret < 0) { log_error(logger, MODULE_COMPILE, "[%s:%d] g2c table:<%s>has no virtual_table_name in line:%s", __FUNCTION__, __LINE__, table_name, line); goto error; } if (column_len > NAME_MAX) { log_error(logger, MODULE_COMPILE, "[%s:%d] g2c table:<%s> virtual_table_name length exceed " "maxium:%d in line:%s", __FUNCTION__, __LINE__, table_name, NAME_MAX, line); goto error; } memcpy(vtable_name, (line + column_offset), column_len); if (is_valid_table_name(vtable_name)) { g2c_item->vtable_id = table_manager_get_table_id(g2c_schema->ref_tbl_mgr, vtable_name); if (g2c_item->vtable_id < 0) { log_error(logger, MODULE_COMPILE, "[%s:%d] g2c table:<%s> has unknown virtual table:%s in line:%s", __FUNCTION__, __LINE__, table_name, vtable_name, line); goto error; } } ret = get_column_pos(line, g2c_schema->clause_index_column, &column_offset, &column_len); if (ret < 0) { log_error(logger, MODULE_COMPILE, "[%s:%d] g2c table:<%s> has no clause_index in line:%s", __FUNCTION__, __LINE__, table_name, line); goto error; } g2c_item->clause_index = atoi(line + column_offset); return g2c_item; error: FREE(g2c_item); return NULL; } void group2compile_item_free(struct group2compile_item *g2c_item) { if (NULL == g2c_item) { return; } FREE(g2c_item); } int compare_literal_id(const void *pa, const void *pb) { struct maat_literal_id *la = (struct maat_literal_id *)pa; struct maat_literal_id *lb = (struct maat_literal_id *)pb; long long ret = la->vtable_id - lb->vtable_id; if (0 == ret) { ret = la->group_id - lb->group_id; } return ret; } int maat_compile_clause_add_literal(struct maat_compile *compile, struct maat_literal_id *literal_id, int clause_index, int clause_not_flag) { struct maat_clause_state *clause_state = compile->clause_states + clause_index; clause_state->not_flag = clause_not_flag; if (!clause_state->in_use) { clause_state->in_use = 1; compile->actual_clause_num++; } struct maat_literal_id *tmp = NULL; tmp = (struct maat_literal_id *)utarray_find(clause_state->ut_literal_ids, literal_id, compare_literal_id); if (tmp) { assert(tmp->group_id == literal_id->group_id); assert(tmp->vtable_id == literal_id->vtable_id); return -1; } else { utarray_push_back(clause_state->ut_literal_ids, literal_id); utarray_sort(clause_state->ut_literal_ids, compare_literal_id); } return 0; } int maat_compile_clause_remove_literal(struct maat_compile *compile, struct maat_literal_id *literal_id, int clause_index) { struct maat_clause_state* clause_state = compile->clause_states + clause_index; struct maat_literal_id *tmp = NULL; tmp = (struct maat_literal_id *)utarray_find(clause_state->ut_literal_ids, literal_id, compare_literal_id); if (tmp) { assert(*(unsigned long long*)tmp == *(unsigned long long*)(literal_id)); } else { return -1; } size_t remove_idx = utarray_eltidx(clause_state->ut_literal_ids, tmp); utarray_erase(clause_state->ut_literal_ids, remove_idx, 1); if (0 == utarray_len(clause_state->ut_literal_ids)) { clause_state->in_use = 0; compile->actual_clause_num--; } return 0; } static const struct maat_clause * maat_clause_hash_fetch_clause(struct compile_runtime *compile_rt, struct maat_literal_id *literal_ids, size_t n_literal_id) { struct maat_clause *clause = NULL; HASH_FIND(hh, compile_rt->clause_by_literals_hash, literal_ids, n_literal_id * sizeof(struct maat_literal_id), clause); if (NULL == clause) { clause = ALLOC(struct maat_clause, 1); clause->clause_id = maat_runtime_get_sequence(compile_rt->ref_maat_rt, "clause_id"); clause->n_literal_id = n_literal_id; clause->literal_ids = ALLOC(struct maat_literal_id, n_literal_id); memcpy(clause->literal_ids, literal_ids, n_literal_id * sizeof(struct maat_literal_id)); HASH_ADD_KEYPTR(hh, compile_rt->clause_by_literals_hash, clause->literal_ids, n_literal_id * sizeof(struct maat_literal_id), clause); } return clause; } struct bool_matcher *maat_compile_bool_matcher_new(struct compile_runtime *compile_rt, size_t *compile_cnt) { if (NULL == compile_rt) { return NULL; } size_t i = 0, j = 0; int has_clause_num = 0; const struct maat_clause *clause = NULL; // STEP 1, update clause_id of each compile and literal void **data_array = NULL; size_t idx = 0; struct maat_compile *iter_compile = NULL; size_t rule_cnt = rcu_updating_hash_list(compile_rt->cfg_hash_tbl, &data_array); *compile_cnt = rule_cnt; for (idx = 0; idx < rule_cnt; idx++) { iter_compile = (struct maat_compile *)data_array[idx]; has_clause_num = 0; for (i = 0; i < MAX_ITEMS_PER_BOOL_EXPR; i++) { struct maat_clause_state *clause_state = iter_compile->clause_states + i; if (!clause_state->in_use) { continue; } has_clause_num++; struct maat_literal_id *literal_ids = (struct maat_literal_id *)utarray_eltptr(clause_state->ut_literal_ids, 0); size_t n_literal_id = utarray_len(clause_state->ut_literal_ids); clause = maat_clause_hash_fetch_clause(compile_rt, literal_ids, n_literal_id); clause_state->clause_id = clause->clause_id; } assert(has_clause_num == iter_compile->actual_clause_num); } // STEP 2, serial compile clause states to a bool expression array size_t expr_cnt = 0; struct bool_expr *bool_expr_array = ALLOC(struct bool_expr, rule_cnt); for (idx = 0; idx < rule_cnt; idx++) { iter_compile = (struct maat_compile *)data_array[idx]; for (i = 0, j = 0; i < MAX_ITEMS_PER_BOOL_EXPR; i++) { if (iter_compile->clause_states[i].in_use) { if (iter_compile->clause_states[i].not_flag) { iter_compile->not_clause_cnt++; } // TODO:mytest need to delete #if 0 struct maat_literal_id *p = NULL; for(p = (struct maat_literal_id *)utarray_front(iter_compile->clause_states[i].ut_literal_ids); p!=NULL; p = (struct maat_literal_id *)utarray_next(iter_compile->clause_states[i].ut_literal_ids, p)) { printf(" compile_rt:%p compile_id:%lld, clause_id:%llu, literal{%lld: %lld}\n", compile_rt, iter_compile->compile_id, iter_compile->clause_states[i].clause_id, p->group_id, p->vtable_id); } #endif bool_expr_array[expr_cnt].items[j].item_id = iter_compile->clause_states[i].clause_id; bool_expr_array[expr_cnt].items[j].not_flag = iter_compile->clause_states[i].not_flag; j++; } } // some compile may have zero groups, e.g. default policy. if (j == (size_t)iter_compile->declared_clause_num && j > 0) { bool_expr_array[expr_cnt].expr_id = iter_compile->compile_id; bool_expr_array[expr_cnt].user_tag = iter_compile; bool_expr_array[expr_cnt].item_num = j; expr_cnt++; } } FREE(data_array); // STEP 3, build bool matcher size_t mem_size = 0; if (0 == expr_cnt) { log_error(compile_rt->logger, MODULE_COMPILE, "[%s:%d] No bool expression to build bool matcher.", __FUNCTION__, __LINE__); FREE(bool_expr_array); return NULL; } struct bool_matcher *bm = bool_matcher_new(bool_expr_array, expr_cnt, &mem_size); if (bm != NULL) { log_info(compile_rt->logger, MODULE_COMPILE, "Build bool matcher of %zu expressions with %zu bytes memory.", expr_cnt, mem_size); } else { log_error(compile_rt->logger, MODULE_COMPILE, "[%s:%d] Build bool matcher failed!", __FUNCTION__, __LINE__); } FREE(bool_expr_array); return bm; } static inline int compare_clause_id(const void *a, const void *b) { long long ret = *(const long long *)a - *(const long long *)b; if (0 == ret) { return 0; } else if(ret < 0) { return -1; } else { return 1; } } static inline int compare_hit_group(const void *pa, const void *pb) { struct maat_hit_group *la=(struct maat_hit_group *)pa; struct maat_hit_group *lb=(struct maat_hit_group *)pb; long long ret = la->group_id - lb->group_id; if (ret == 0) { ret = la->vtable_id - lb->vtable_id; } return ret; } struct literal_clause *maat_compile_build_literal2clause_hash(struct compile_runtime *compile_rt) { if (NULL == compile_rt) { return NULL; } void **data_array = NULL; struct maat_clause_state *clause_state = NULL; struct maat_literal_id *tmp_literal_id = NULL; struct literal_clause *l2c_value = NULL; struct literal_clause *literal2clause_hash = NULL; size_t compile_cnt = rcu_updating_hash_list(compile_rt->cfg_hash_tbl, &data_array); for (size_t idx = 0; idx < compile_cnt; idx++) { struct maat_compile *compile = (struct maat_compile *)data_array[idx]; for (size_t i = 0; i < MAX_ITEMS_PER_BOOL_EXPR; i++) { clause_state = compile->clause_states + i; if (!clause_state->in_use) { continue; } for (size_t j = 0; j < utarray_len(clause_state->ut_literal_ids); j++) { tmp_literal_id = (struct maat_literal_id *)utarray_eltptr(clause_state->ut_literal_ids, j); HASH_FIND(hh, literal2clause_hash, tmp_literal_id, sizeof(struct maat_literal_id), l2c_value); if (NULL == l2c_value) { l2c_value = ALLOC(struct literal_clause, 1); l2c_value->key = *tmp_literal_id; utarray_new(l2c_value->clause_ids, &ut_clause_id_icd); HASH_ADD(hh, literal2clause_hash, key, sizeof(l2c_value->key), l2c_value); } if (utarray_find(l2c_value->clause_ids, &(clause_state->clause_id), compare_clause_id)) { continue; } utarray_push_back(l2c_value->clause_ids, &(clause_state->clause_id)); utarray_sort(l2c_value->clause_ids, compare_clause_id); } } } FREE(data_array); return literal2clause_hash; } static int maat_compile_has_clause(struct maat_compile *compile, long long clause_id) { struct maat_clause_state *clause_state = NULL; for (size_t i = 0; i < MAX_ITEMS_PER_BOOL_EXPR; i++) { clause_state = compile->clause_states + i; if (!clause_state->in_use) { continue; } if (clause_state->clause_id == clause_id) { return 1; } } return 0; } static size_t compile_state_if_new_hit_compile(struct maat_compile_state *compile_state, struct maat_compile *compile) { size_t r_in_c_cnt = 0; int ret = 0; long long new_hit_clause_id = 0; for (size_t i = 0; i < utarray_len(compile_state->this_scan_hit_clauses); i++) { new_hit_clause_id = *(long long*)utarray_eltptr(compile_state->this_scan_hit_clauses, i); ret = maat_compile_has_clause(compile, new_hit_clause_id); if (ret) { r_in_c_cnt++; } } return r_in_c_cnt; } size_t maat_compile_bool_matcher_match(struct compile_runtime *compile_rt, int is_last_scan, struct maat_compile_state *compile_state, void **user_data_array, size_t ud_array_size) { size_t ud_result_cnt = 0; struct maat_compile *compile = NULL; struct bool_expr_match *expr_match = compile_rt->expr_match_buff + (compile_state->thread_id * MAX_SCANNER_HIT_COMPILE_NUM); assert(compile_state->thread_id >= 0); if (0 == compile_state->compile_rt_version) { compile_state->compile_rt_version = compile_rt->version; } if (NULL == compile_rt->bm || 0 == utarray_len(compile_state->all_hit_clauses) || compile_state->compile_rt_version != compile_rt->version) { compile_state->this_scan_hit_item_cnt = 0; return 0; } //TODO:mytest need to delete #if 0 unsigned long long *p = utarray_eltptr(compile_state->all_hit_clauses, 0); for (p = (unsigned long long *)utarray_front(compile_state->all_hit_clauses); p != NULL; p = (unsigned long long *)utarray_next(compile_state->all_hit_clauses, p)) { printf("before bool_matcher_match compile_rt:%p compile_state clause_id:%llu\n", compile_rt, *p); } #endif int bool_match_ret = bool_matcher_match(compile_rt->bm, (unsigned long long *)utarray_eltptr(compile_state->all_hit_clauses, 0), utarray_len(compile_state->all_hit_clauses), expr_match, MAX_SCANNER_HIT_COMPILE_NUM); for (int i = 0; i < bool_match_ret && ud_result_cnt < ud_array_size; i++) { compile = (struct maat_compile *)expr_match[i].user_tag; assert(compile->magic == MAAT_COMPILE_MAGIC); assert((unsigned long long)compile->compile_id == expr_match[i].expr_id); if (0 == compile->actual_clause_num) { continue; } size_t n_new_hit_compile = compile_state_if_new_hit_compile(compile_state, compile); size_t n_this_scan_hit_item = compile_state->this_scan_hit_item_cnt; if ((compile->not_clause_cnt > 0) && (LAST_SCAN_UNSET == is_last_scan)) { compile_state->not_clause_hitted_flag = 1; } else if (compile->user_data) { if (n_new_hit_compile > 0 || 0 == n_this_scan_hit_item) { /* compile hit because of new item or hit a compile that refer a NOT-logic group in previous scan */ user_data_array[ud_result_cnt] = compile->user_data; ud_result_cnt++; } } } compile_state->this_scan_hit_item_cnt = 0; return ud_result_cnt; } #define COMPILE_RULE_MAGIC 0x1a2b3c4d struct compile_rule *compile_rule_new(struct compile_item *compile_item, struct compile_schema *schema, const char *table_name, const char *table_line) { struct compile_rule *compile_rule = ALLOC(struct compile_rule, 1); compile_rule->magic_num = COMPILE_RULE_MAGIC; compile_rule->declared_clause_num = compile_item->declared_clause_num; compile_rule->ref_schema = schema; compile_rule->ex_data = ALLOC(void *, 1); memcpy(compile_rule->table_name, table_name, sizeof(compile_rule->table_name)); compile_rule->table_line_len = strlen(table_line) + 1; compile_rule->table_line = ALLOC(char, compile_rule->table_line_len); memcpy(compile_rule->table_line, table_line, compile_rule->table_line_len); if (1 == schema->set_flag) { *(compile_rule->ex_data) = rule_ex_data_new(table_name, schema->table_id, compile_rule->table_line, &(schema->ex_schema)); } compile_rule->compile_id = compile_item->compile_id; return compile_rule; } struct compile_rule *compile_rule_clone(struct compile_rule *rule) { struct compile_rule *new_rule = ALLOC(struct compile_rule, 1); new_rule->magic_num = rule->magic_num; new_rule->declared_clause_num = rule->declared_clause_num; new_rule->ref_schema = rule->ref_schema; new_rule->ex_data = ALLOC(void *, 1); memcpy(new_rule->table_name, rule->table_name, sizeof(new_rule->table_name)); new_rule->table_line_len = rule->table_line_len; new_rule->table_line = ALLOC(char, new_rule->table_line_len); memcpy(new_rule->table_line, rule->table_line, new_rule->table_line_len); if (1 == rule->ref_schema->set_flag) { *(new_rule->ex_data) = rule_ex_data_new(rule->table_name, rule->ref_schema->table_id, rule->table_line, &(rule->ref_schema->ex_schema)); } new_rule->compile_id = rule->compile_id; return new_rule; } void compile_rule_free(struct compile_rule *compile_rule) { struct compile_schema *schema = compile_rule->ref_schema; assert(compile_rule->magic_num == COMPILE_RULE_MAGIC); if (1 == schema->set_flag) { rule_ex_data_free(schema->table_id, compile_rule->ex_data, &(schema->ex_schema)); *compile_rule->ex_data = NULL; } if (compile_rule->ex_data != NULL) { FREE(compile_rule->ex_data); } compile_rule->declared_clause_num = -1; if (compile_rule->table_line != NULL) { FREE(compile_rule->table_line); } FREE(compile_rule); } struct maat_compile *maat_compile_clone(struct maat_compile *compile, int deep_copy) { struct maat_compile *new_compile = ALLOC(struct maat_compile, 1); new_compile->magic = compile->magic; new_compile->compile_id = compile->compile_id; new_compile->actual_clause_num = compile->actual_clause_num; new_compile->declared_clause_num = compile->declared_clause_num; memcpy(new_compile->table_name, compile->table_name, sizeof(new_compile->table_name)); new_compile->not_clause_cnt = compile->not_clause_cnt; new_compile->user_data_free = compile->user_data_free; if (1 == deep_copy && compile->user_data != NULL) { new_compile->user_data = compile_rule_clone((struct compile_rule *)compile->user_data); } struct maat_literal_id *literal_id = NULL; for (int i = 0; i < MAX_ITEMS_PER_BOOL_EXPR; i++) { new_compile->clause_states[i].clause_id = compile->clause_states[i].clause_id; new_compile->clause_states[i].in_use = compile->clause_states[i].in_use; new_compile->clause_states[i].not_flag = compile->clause_states[i].not_flag; utarray_new(new_compile->clause_states[i].ut_literal_ids, &ut_literal_id_icd); for (int j = 0; j < utarray_len(compile->clause_states[i].ut_literal_ids); j++) { literal_id = (struct maat_literal_id *)utarray_eltptr(compile->clause_states[i].ut_literal_ids, j); utarray_push_back(new_compile->clause_states[i].ut_literal_ids, literal_id); } for (int k = 0; k < utarray_len(new_compile->clause_states[i].ut_literal_ids); k++) { literal_id = (struct maat_literal_id *)utarray_eltptr(new_compile->clause_states[i].ut_literal_ids, k); } } return new_compile; } int maat_add_group_to_compile(struct rcu_hash_table *hash_tbl, struct group2compile_item *g2c_item, struct log_handle *logger) { int ret = -1; long long compile_id = g2c_item->compile_id; struct maat_compile *compile = NULL; struct maat_literal_id literal_id = {g2c_item->group_id, g2c_item->vtable_id}; int updating_flag = rcu_hash_is_updating(hash_tbl); if (1 == updating_flag) { compile = rcu_updating_hash_find(hash_tbl, (char *)&compile_id, sizeof(long long)); if (compile != NULL) { /* compile found in updating hash(added by compile runtime), it can be modified directly */ ret = maat_compile_clause_add_literal(compile, &literal_id, g2c_item->clause_index, g2c_item->not_flag); if (ret < 0) { log_error(logger, MODULE_COMPILE, "[%s:%d] add literal_id{group_id:%lld, vtable_id:%d} to clause_index: %d" " of compile %d failed", __FUNCTION__, __LINE__, g2c_item->group_id, g2c_item->vtable_id, g2c_item->clause_index, compile_id); } } else { /* compile neither in effective hash nor in updating hash, so new one */ compile = maat_compile_new(compile_id); assert(compile != NULL); ret = maat_compile_clause_add_literal(compile, &literal_id, g2c_item->clause_index, g2c_item->not_flag); if (ret < 0) { log_error(logger, MODULE_COMPILE, "[%s:%d] add literal_id{group_id:%lld, vtable_id:%d} to clause_index: %d" " of compile %d failed", __FUNCTION__, __LINE__, g2c_item->group_id, g2c_item->vtable_id, g2c_item->clause_index, compile_id); } rcu_hash_add(hash_tbl, (char *)&compile_id, sizeof(long long), compile); } } else { compile = rcu_hash_find(hash_tbl, (char *)&compile_id, sizeof(long long)); if (compile != NULL) { /******************************************************************* compile found in effective hash(added by compile runtime), which means 1. rcu_hash_add(hash_tbl, compile) ==> finished 2. rcu_hash_commit(hash_tbl) ==> finished can only be deleted but not modified before delete it, we need to make a copy for further use *********************************************************************/ struct maat_compile *copy_compile = maat_compile_clone(compile, 1); assert(copy_compile != NULL); /* delete compile from rcu hash */ rcu_hash_del(hash_tbl, (char *)&compile_id, sizeof(long long)); ret = maat_compile_clause_add_literal(copy_compile, &literal_id, g2c_item->clause_index, g2c_item->not_flag); if (ret < 0) { log_error(logger, MODULE_COMPILE, "[%s:%d] add literal_id{group_id:%lld, vtable_id:%d} to clause_index: %d" " of compile %d failed", __FUNCTION__, __LINE__, g2c_item->group_id, g2c_item->vtable_id, g2c_item->clause_index, compile_id); } rcu_hash_add(hash_tbl, (char *)&compile_id, sizeof(long long), copy_compile); } else { compile = maat_compile_new(compile_id); assert(compile != NULL); ret = maat_compile_clause_add_literal(compile, &literal_id, g2c_item->clause_index, g2c_item->not_flag); if (ret < 0) { log_error(logger, MODULE_COMPILE, "[%s:%d] add literal_id{group_id:%lld, vtable_id:%d} to clause_index: %d" " of compile %d failed", __FUNCTION__, __LINE__, g2c_item->group_id, g2c_item->vtable_id, g2c_item->clause_index, compile_id); } rcu_hash_add(hash_tbl, (char *)&compile_id, sizeof(long long), compile); } } return ret; } int maat_remove_group_from_compile(struct rcu_hash_table *hash_tbl, struct group2compile_item *g2c_item, struct log_handle *logger) { int ret = -1; long long compile_id = g2c_item->compile_id; struct maat_compile *compile = NULL; struct maat_literal_id literal_id = {g2c_item->group_id, g2c_item->vtable_id}; int updating_flag = rcu_hash_is_updating(hash_tbl); if (1 == updating_flag) { compile = rcu_updating_hash_find(hash_tbl, (char *)&compile_id, sizeof(long long)); if (NULL == compile) { log_error(logger, MODULE_COMPILE, "[%s:%d] Remove group_id:%lld from compile_id:%lld failed, compile" " is not exisited.", __FUNCTION__, __LINE__, g2c_item->group_id, compile_id); return -1; } else { /* compile found in updating hash, it can be modified directly */ ret = maat_compile_clause_remove_literal(compile, &literal_id, g2c_item->clause_index); if (ret < 0) { log_error(logger, MODULE_COMPILE, "[%s:%d] Remove group_id:%lld vtable_id %d from clause %d of " "compile_id:%lld failed, literal is not in compile.", __FUNCTION__, __LINE__, g2c_item->group_id, g2c_item->vtable_id, g2c_item->clause_index, compile_id); } if (0 == compile->actual_clause_num && NULL == compile->user_data) { rcu_hash_del(hash_tbl, (char *)&compile_id, sizeof(long long)); } } } else { //find in effetive hash compile = rcu_hash_find(hash_tbl, (char *)&compile_id, sizeof(long long)); if (compile != NULL) { /******************************************************************* compile found in effective hash, which means 1. rcu_hash_add(hash_tbl, compile) ==> finished 2. rcu_hash_commit(hash_tbl) ==> finished can only be deleted but not modified before delete it, we need to make a copy for further use *********************************************************************/ struct maat_compile *copy_compile = maat_compile_clone(compile, 1); assert(copy_compile != NULL); /* delete compile from rcu hash */ rcu_hash_del(hash_tbl, (char *)&compile_id, sizeof(long long)); ret = maat_compile_clause_remove_literal(copy_compile, &literal_id, g2c_item->clause_index); if (ret < 0) { log_error(logger, MODULE_COMPILE, "[%s:%d] Remove group_id:%lld vtable_id %d from clause %d of compile_id:" "%lld failed, literal is not in compile.", __FUNCTION__, __LINE__, g2c_item->group_id, g2c_item->vtable_id, g2c_item->clause_index, compile_id); } if (0 == copy_compile->actual_clause_num && NULL == copy_compile->user_data) { maat_compile_free(copy_compile); } else { rcu_hash_add(hash_tbl, (char *)&compile_id, sizeof(long long), copy_compile); } } else { log_error(logger, MODULE_COMPILE, "[%s:%d] Remove group_id:%lld from compile_id:%lld failed, compile is not exisited.", __FUNCTION__, __LINE__, g2c_item->group_id, compile_id); return -1; } } return ret; } struct maat_compile_state *maat_compile_state_new(int thread_id) { struct maat_compile_state *compile_state = ALLOC(struct maat_compile_state, 1); compile_state->thread_id = thread_id; utarray_new(compile_state->internal_hit_paths, &ut_hit_path_icd); utarray_new(compile_state->all_hit_clauses, &ut_clause_id_icd); utarray_new(compile_state->this_scan_hit_clauses, &ut_clause_id_icd); utarray_new(compile_state->all_hit_groups, &ut_hit_group_icd); return compile_state; } void maat_compile_state_reset(struct maat_compile_state *compile_state) { if (NULL == compile_state) { return; } compile_state->Nth_scan = 0; compile_state->compile_rt_version = 0; compile_state->this_scan_hit_item_cnt = 0; compile_state->not_clause_hitted_flag = 0; compile_state->hit_path_cnt = 0; utarray_clear(compile_state->internal_hit_paths); utarray_clear(compile_state->all_hit_clauses); utarray_clear(compile_state->this_scan_hit_clauses); utarray_clear(compile_state->all_hit_groups); } void maat_compile_state_free(struct maat_compile_state *compile_state) { if (NULL == compile_state) { return; } if (compile_state->internal_hit_paths != NULL) { utarray_free(compile_state->internal_hit_paths); compile_state->internal_hit_paths = NULL; } if (compile_state->all_hit_clauses != NULL) { utarray_free(compile_state->all_hit_clauses); compile_state->all_hit_clauses = NULL; } if (compile_state->this_scan_hit_clauses != NULL) { utarray_free(compile_state->this_scan_hit_clauses); compile_state->this_scan_hit_clauses = NULL; } if (compile_state->all_hit_groups != NULL) { utarray_free(compile_state->all_hit_groups); compile_state->all_hit_groups = NULL; } FREE(compile_state); } static int maat_compile_hit_path_add(UT_array *hit_paths, long long item_id, long long group_id, int vtable_id, int Nth_scan, int Nth_item_result) { struct maat_internal_hit_path new_path; new_path.item_id = item_id; new_path.Nth_hit_item = Nth_item_result; new_path.Nth_scan = Nth_scan; new_path.group_id = group_id; new_path.vtable_id = vtable_id; utarray_push_back(hit_paths, &new_path); return 1; } static int maat_compile_has_literal(struct maat_compile *compile, struct maat_literal_id *literal_id) { int i = 0; struct maat_literal_id *tmp = NULL; struct maat_clause_state *clause_state = NULL; for (i = 0; i < MAX_ITEMS_PER_BOOL_EXPR; i++) { clause_state = compile->clause_states+i; if(!clause_state->in_use) { continue; } tmp = (struct maat_literal_id*)utarray_find(clause_state->ut_literal_ids, literal_id, compare_literal_id); if (tmp) { assert(tmp->group_id == literal_id->group_id && tmp->vtable_id == literal_id->vtable_id); return 1; } } return 0; } static int maat_compile_is_hit_path_existed(const struct maat_hit_path *hit_paths, size_t n_path, const struct maat_hit_path *find) { for (size_t i = 0; i < n_path; i++) { if (0 == memcmp(hit_paths + i, find, sizeof(*find))) { return 1; } } return 0; } size_t compile_runtime_get_hit_paths(struct compile_runtime *compile_rt, struct maat_compile_state *compile_state, struct maat_hit_path *hit_path_array, size_t array_size, size_t n_internal_hit_path) { /* assign hit_path_array[].compile_id */ size_t new_hit_path_cnt = 0; struct maat_compile *compile = NULL; struct maat_literal_id literal_id = {0, 0}; struct bool_expr_match *expr_match = compile_rt->expr_match_buff + (compile_state->thread_id * MAX_SCANNER_HIT_COMPILE_NUM); assert(compile_state->thread_id >= 0); if (compile_state->compile_rt_version != compile_rt->version) { return 0; } int bool_match_ret = bool_matcher_match(compile_rt->bm, (unsigned long long *)utarray_eltptr(compile_state->all_hit_clauses, 0), utarray_len(compile_state->all_hit_clauses), expr_match, MAX_SCANNER_HIT_COMPILE_NUM); for (int idx = 0; idx < bool_match_ret; idx++) { compile = (struct maat_compile *)expr_match[idx].user_tag; assert(compile->magic == MAAT_COMPILE_MAGIC); assert((unsigned long long)compile->compile_id == expr_match[idx].expr_id); if (0 == compile->actual_clause_num || NULL == compile->user_data) { continue; } for (size_t j = 0; j < n_internal_hit_path && (n_internal_hit_path + new_hit_path_cnt) < array_size; j++) { if (hit_path_array[j].top_group_id < 0) { literal_id.group_id = hit_path_array[j].sub_group_id; } else { literal_id.group_id = hit_path_array[j].top_group_id; } literal_id.vtable_id = hit_path_array[j].vtable_id; if (maat_compile_has_literal(compile, &literal_id)) { if (hit_path_array[j].top_group_id < 0) { hit_path_array[j].top_group_id = hit_path_array[j].sub_group_id; } if (hit_path_array[j].compile_id < 0) { hit_path_array[j].compile_id = compile->compile_id; } else { // means same literal_id hit more than one compile_id struct maat_hit_path tmp_path = hit_path_array[j]; tmp_path.compile_id = compile->compile_id; if(maat_compile_is_hit_path_existed(hit_path_array, n_internal_hit_path + new_hit_path_cnt, &tmp_path)) { hit_path_array[n_internal_hit_path + new_hit_path_cnt] = tmp_path; new_hit_path_cnt++; } } } } } return (n_internal_hit_path + new_hit_path_cnt); } void maat_compile_state_update_hit_path(struct maat_compile_state *compile_state, long long item_id, long long group_id, int vtable_id, int Nth_scan, int Nth_item_result) { if (compile_state->Nth_scan != Nth_scan) { assert(compile_state->this_scan_hit_item_cnt == 0); compile_state->Nth_scan = Nth_scan; utarray_clear(compile_state->this_scan_hit_clauses); } maat_compile_hit_path_add(compile_state->internal_hit_paths, item_id, group_id, vtable_id, Nth_scan, Nth_item_result); compile_state->hit_path_cnt++; compile_state->this_scan_hit_item_cnt++; } void maat_compile_state_update_hit_clause(struct maat_compile_state *compile_state, void *compile_runtime, long long group_id, int vtable_id) { if (NULL == compile_state || NULL == compile_runtime) { return; } struct maat_literal_id literal_id = {group_id, vtable_id}; struct literal_clause *l2c_val = NULL; long long *clause_id = 0; struct compile_runtime *compile_rt = (struct compile_runtime *)compile_runtime; HASH_FIND(hh, compile_rt->literal2clause_hash, &literal_id, sizeof(literal_id), l2c_val); if (!l2c_val) { return; } size_t i = 0; size_t new_clause_idx = utarray_len(compile_state->this_scan_hit_clauses); for (i = 0; i < utarray_len(l2c_val->clause_ids); i++) { clause_id = (long long *)utarray_eltptr(l2c_val->clause_ids, i); if (utarray_find(compile_state->all_hit_clauses, clause_id, compare_clause_id)) { continue; } utarray_push_back(compile_state->this_scan_hit_clauses, clause_id); } if ((utarray_len(compile_state->this_scan_hit_clauses) - new_clause_idx) > 0) { utarray_reserve(compile_state->all_hit_clauses, utarray_len(compile_state->this_scan_hit_clauses) - new_clause_idx); for (i = new_clause_idx; i < utarray_len(compile_state->this_scan_hit_clauses); i++) { clause_id = (long long *)utarray_eltptr(compile_state->this_scan_hit_clauses, i); utarray_push_back(compile_state->all_hit_clauses, clause_id); } utarray_sort(compile_state->all_hit_clauses, compare_clause_id); } } void maat_compile_state_update_hit_group(struct maat_compile_state *compile_state, long long group_id, int vtable_id) { if (NULL == compile_state) { return; } struct maat_hit_group hit_group = {group_id, vtable_id}; if (utarray_find(compile_state->all_hit_groups, &hit_group, compare_hit_group)) { return; } utarray_push_back(compile_state->all_hit_groups, &hit_group); utarray_sort(compile_state->all_hit_groups, compare_hit_group); } int maat_compile_state_has_NOT_clause(struct maat_compile_state *compile_state) { return compile_state->not_clause_hitted_flag; } void compile_runtime_ex_data_iterate(struct compile_runtime *compile_rt, struct compile_schema *compile_schema) { if (NULL == compile_rt || NULL == compile_schema || (0 == compile_schema->set_flag)) { return; } compile_runtime_user_data_iterate(compile_rt, rule_ex_data_new_cb, &(compile_schema->ex_schema), compile_schema->table_id); } void *compile_runtime_get_ex_data(struct compile_runtime *compile_rt, struct compile_schema *compile_schema, long long compile_id) { if (NULL == compile_rt || NULL == compile_schema || compile_id < 0 || (0 == compile_schema->set_flag)) { return NULL; } struct compile_rule *compile_rule = NULL; compile_rule = (struct compile_rule *)compile_runtime_get_user_data(compile_rt, compile_id); if (NULL == compile_rule) { return NULL; } void *ex_data = NULL; compile_schema->ex_schema.dup_func(compile_schema->table_id, &ex_data, compile_rule->ex_data, compile_schema->ex_schema.argl, compile_schema->ex_schema.argp); return ex_data; } int compile_runtime_add_compile(struct compile_runtime *compile_rt, struct compile_schema *schema, long long compile_id, const char *table_name, const char *line) { struct compile_item *compile_item = NULL; struct maat_compile *compile = NULL; compile_item = compile_item_new(line, schema, table_name, compile_rt->logger); if (NULL == compile_item) { return -1; } struct compile_rule *compile_rule = compile_rule_new(compile_item, schema, table_name, line); compile_item_free(compile_item); int updating_flag = rcu_hash_is_updating(compile_rt->cfg_hash_tbl); if (1 == updating_flag) { compile = rcu_updating_hash_find(compile_rt->cfg_hash_tbl, (char *)&compile_id, sizeof(long long)); if (compile != NULL) { /**************************************************************** compile found in updating hash(added by group2compile runtime), which means 1. rcu_hash_add(htable, compile) ==> finished 2. rcu_hash_commit(htable) ==> undo because it's in updating hash, we can modify it directly ******************************************************************/ /* compile has group2compile_table info, so set compile_table info */ maat_compile_set(compile, table_name, compile_rule->declared_clause_num, compile_rule, (void (*)(void *))compile_rule_free); } else { // compile neither in effective hash nor in updating hash compile = maat_compile_new(compile_rule->compile_id); assert(compile != NULL); maat_compile_set(compile, table_name, compile_rule->declared_clause_num, compile_rule, (void (*)(void *))compile_rule_free); rcu_hash_add(compile_rt->cfg_hash_tbl, (char *)&compile_id, sizeof(long long), compile); } } else { compile = rcu_hash_find(compile_rt->cfg_hash_tbl, (char *)&compile_id, sizeof(long long)); if (compile != NULL) { /******************************************************************************** compile found in effective hash(added by group2compile runtime), which means 1. rcu_hash_add(htable, compile) ==> finished 2. rcu_hash_commit(htable) ==> finished can only be deleted but not modified before delete it, we need to make a copy for further use ***********************************************************************************/ struct maat_compile *copy_compile = maat_compile_clone(compile, 0); assert(copy_compile != NULL); /* delete compile from rcu hash */ rcu_hash_del(compile_rt->cfg_hash_tbl, (char *)&compile_id, sizeof(long long)); /* copy_compile has group2compile_table info, so set compile_table info */ maat_compile_set(copy_compile, table_name, compile_rule->declared_clause_num, compile_rule, (void (*)(void *))compile_rule_free); /* add copy_compile to rcu hash */ rcu_hash_add(compile_rt->cfg_hash_tbl, (char *)&compile_id, sizeof(long long), copy_compile); } else { compile = maat_compile_new(compile_rule->compile_id); assert(compile != NULL); maat_compile_set(compile, table_name, compile_rule->declared_clause_num, compile_rule, (void (*)(void *))compile_rule_free); rcu_hash_add(compile_rt->cfg_hash_tbl, (char *)&compile_id, sizeof(long long), compile); } } return 0; } void compile_runtime_del_compile(struct compile_runtime *compile_rt, long long compile_id) { struct maat_compile *compile = NULL; int updating_flag = rcu_hash_is_updating(compile_rt->cfg_hash_tbl); if (1 == updating_flag) { // find in updating hash compile = rcu_updating_hash_find(compile_rt->cfg_hash_tbl, (char *)&compile_id, sizeof(long long)); if (compile != NULL) { /**************************************************************** compile found in updating hash, which means 1. rcu_hash_del(htable, compile) ==> finished 2. rcu_hash_commit(htable) ==> undo because it's in updating hash, we can modify it directly ******************************************************************/ if (compile->user_data_free && compile->user_data) { compile->user_data_free(compile->user_data); compile->user_data = NULL; } if (0 == compile->actual_clause_num) { rcu_hash_del(compile_rt->cfg_hash_tbl, (char *)&compile_id, sizeof(long long)); } } } else { // find in effective hash compile = rcu_hash_find(compile_rt->cfg_hash_tbl, (char *)&compile_id, sizeof(long long)); if (compile != NULL) { /******************************************************************* compile found in effective hash, which means 1. rcu_hash_add(htable, compile) ==> finished 2. rcu_hash_commit(htable) ==> finished can only be deleted but not modified before delete it, we need to make a copy for further use *********************************************************************/ struct maat_compile *copy_compile = maat_compile_clone(compile, 0); assert(copy_compile != NULL); /* delete compile from rcu hash */ rcu_hash_del(compile_rt->cfg_hash_tbl, (char *)&compile_id, sizeof(long long)); if (0 == copy_compile->actual_clause_num) { maat_compile_free(copy_compile); } else { rcu_hash_add(compile_rt->cfg_hash_tbl, (char *)&compile_id, sizeof(long long), copy_compile); } } } } int compile_runtime_update(void *compile_runtime, void *compile_schema, const char *table_name, const char *line, int valid_column) { if (NULL == compile_runtime || NULL == compile_schema || NULL == line) { return -1; } struct compile_schema *schema = (struct compile_schema *)compile_schema; struct compile_runtime *compile_rt = (struct compile_runtime *)compile_runtime; int is_valid = get_column_value(line, valid_column); if (is_valid < 0) { log_error(compile_rt->logger, MODULE_COMPILE, "[%s:%d] compile table:<%s> has no is_valid(column seq:%d)" " in table_line:%s", __FUNCTION__, __LINE__, table_name, valid_column, line); compile_rt->update_err_cnt++; return -1; } long long compile_id = get_column_value(line, schema->compile_id_column); if (compile_id < 0) { log_error(compile_rt->logger, MODULE_COMPILE, "[%s:%d] compile table:<%s> has no compile_id(column seq:%d)" " in table_line:%s", __FUNCTION__, __LINE__, table_name, schema->compile_id_column, line); compile_rt->update_err_cnt++; return -1; } if (0 == is_valid) { // delete compile_runtime_del_compile(compile_rt, compile_id); } else { // add int ret = compile_runtime_add_compile(compile_rt, schema, compile_id, table_name, line); if (ret < 0) { compile_rt->update_err_cnt++; } } return 0; } int group2compile_runtime_update(void *g2c_runtime, void *g2c_schema, const char *table_name, const char *line, int valid_column) { if (NULL == g2c_runtime || NULL == g2c_schema || NULL == line) { return -1; } struct group2compile_schema *schema = (struct group2compile_schema *)g2c_schema; struct group2compile_runtime *g2c_rt = (struct group2compile_runtime *)g2c_runtime; struct compile_runtime *compile_rt = g2c_rt->ref_compile_rt; int is_valid = get_column_value(line, valid_column); if (is_valid < 0) { log_error(compile_rt->logger, MODULE_COMPILE, "[%s:%d] g2c table:<%s> has no is_valid(column seq:%d)" " in table_line:%s", __FUNCTION__, __LINE__, table_name, valid_column, line); g2c_rt->update_err_cnt++; return -1; } int ret = -1; struct group2compile_item *g2c_item = group2compile_item_new(line, schema, table_name, compile_rt->logger); if (NULL == g2c_item) { g2c_rt->update_err_cnt++; return -1; } struct group_reference *group_ref = NULL; if (0 == is_valid) { //delete pthread_mutex_lock(&(compile_rt->mutex)); HASH_FIND(hh, compile_rt->group_ref_hash, (char *)&(g2c_item->group_id), sizeof(long long), group_ref); if (group_ref != NULL) { if (0 == group_ref->ref_by_compile_cnt) { HASH_DEL(compile_rt->group_ref_hash, group_ref); FREE(group_ref); } else { group_ref->ref_by_compile_cnt--; } } pthread_mutex_unlock(&(compile_rt->mutex)); ret = maat_remove_group_from_compile(compile_rt->cfg_hash_tbl, g2c_item, compile_rt->logger); if (0 == ret) { if (g2c_item->not_flag) { g2c_rt->not_flag_group--; } g2c_rt->rule_num--; } else { g2c_rt->update_err_cnt++; } } else { //add pthread_mutex_lock(&(compile_rt->mutex)); HASH_FIND(hh, compile_rt->group_ref_hash, (char *)&(g2c_item->group_id), sizeof(long long), group_ref); if (NULL == group_ref) { group_ref = ALLOC(struct group_reference, 1); group_ref->group_id = g2c_item->group_id; HASH_ADD_KEYPTR(hh, compile_rt->group_ref_hash, (char *)&(group_ref->group_id), sizeof(long long), group_ref); } group_ref->ref_by_compile_cnt++; pthread_mutex_unlock(&(compile_rt->mutex)); ret = maat_add_group_to_compile(compile_rt->cfg_hash_tbl, g2c_item, compile_rt->logger); if (0 == ret) { if (g2c_item->not_flag) { g2c_rt->not_flag_group++; } g2c_rt->rule_num++; } else { g2c_rt->update_err_cnt++; } } group2compile_item_free(g2c_item); return ret; } int group_referenced_by_compile(struct compile_runtime *compile_rt, long long group_id) { struct group_reference *group_ref = NULL; pthread_mutex_lock(&(compile_rt->mutex)); HASH_FIND(hh, compile_rt->group_ref_hash, (char *)&group_id, sizeof(long long), group_ref); if (group_ref != NULL) { pthread_mutex_unlock(&(compile_rt->mutex)); return 1; } pthread_mutex_unlock(&(compile_rt->mutex)); return 0; } long long group2compile_runtime_not_group_count(void *g2c_runtime) { if (NULL == g2c_runtime) { return 0; } struct group2compile_runtime *g2c_rt = (struct group2compile_runtime *)g2c_runtime; return g2c_rt->not_flag_group; } long long group2compile_runtime_rule_count(void *g2c_runtime) { if (NULL == g2c_runtime) { return 0; } struct group2compile_runtime *g2c_rt = (struct group2compile_runtime *)g2c_runtime; return g2c_rt->rule_num; } long long group2compile_runtime_update_err_count(void *g2c_runtime) { if (NULL == g2c_runtime) { return 0; } struct group2compile_runtime *g2c_rt = (struct group2compile_runtime *)g2c_runtime; return g2c_rt->update_err_cnt; } int compile_runtime_commit(void *compile_runtime, const char *table_name, long long maat_rt_version) { if (NULL == compile_runtime) { return -1; } struct compile_runtime *compile_rt = (struct compile_runtime *)compile_runtime; int updating_flag = rcu_hash_is_updating(compile_rt->cfg_hash_tbl); if (0 == updating_flag) { return 0; } int ret = 0; size_t compile_cnt = 0; struct bool_matcher *old_bool_matcher = NULL; struct bool_matcher *new_bool_matcher = NULL; new_bool_matcher = maat_compile_bool_matcher_new(compile_rt, &compile_cnt); if (NULL == new_bool_matcher) { log_error(compile_rt->logger, MODULE_COMPILE, "[%s:%d] table[%s] rebuild compile bool_matcher failed, compile" " rules count:%zu", __FUNCTION__, __LINE__, table_name, compile_cnt); ret = -1; } else { log_info(compile_rt->logger, MODULE_COMPILE, "table[%s] commit %zu compile rules and rebuild compile bool_matcher" " completed, version:%lld", table_name, compile_cnt, maat_rt_version); } struct literal_clause *old_literal2clause = NULL; struct literal_clause *new_literal2clause = NULL; new_literal2clause = maat_compile_build_literal2clause_hash(compile_rt); old_literal2clause = compile_rt->literal2clause_hash; old_bool_matcher = compile_rt->bm; compile_rt->bm = new_bool_matcher; compile_rt->literal2clause_hash = new_literal2clause; rcu_hash_commit(compile_rt->cfg_hash_tbl); maat_garbage_bagging(compile_rt->ref_garbage_bin, old_bool_matcher, NULL, garbage_bool_matcher_free); maat_garbage_bagging(compile_rt->ref_garbage_bin, old_literal2clause, NULL, garbage_literal2clause_hash_free); compile_rt->rule_num = rcu_hash_count(compile_rt->cfg_hash_tbl); return ret; } long long compile_runtime_rule_count(void *compile_runtime) { if (NULL == compile_runtime) { return 0; } struct compile_runtime *compile_rt = (struct compile_runtime *)compile_runtime; return compile_rt->rule_num; } long long compile_runtime_update_err_count(void *compile_runtime) { if (NULL == compile_runtime) { return 0; } struct compile_runtime *compile_rt = (struct compile_runtime *)compile_runtime; return compile_rt->update_err_cnt; } static int compile_sort_para_compare(const struct compile_sort_para *a, const struct compile_sort_para *b) { //If compile rule's execute sequences are not specified or equal. if (a->declared_clause_num != b->declared_clause_num) { return (a->declared_clause_num - b->declared_clause_num); } else { return (b->compile_id - a->compile_id); } } static void compile_sort_para_set(struct compile_sort_para *para, const struct compile_rule *rule) { para->compile_id = rule->compile_id; para->declared_clause_num = rule->declared_clause_num; } static int compare_compile_rule(const void *a, const void *b) { const struct compile_rule *ra = *(const struct compile_rule **)a; const struct compile_rule *rb = *(const struct compile_rule **)b; struct compile_sort_para sa, sb; compile_sort_para_set(&sa, ra); compile_sort_para_set(&sb, rb); return compile_sort_para_compare(&sa, &sb); } int compile_runtime_match(struct compile_runtime *compile_rt, long long *compile_ids, size_t compile_ids_size, struct maat_state *state) { struct maat_compile_state *compile_state = state->compile_state; int is_last_scan = state->is_last_scan; struct compile_rule *compile_rules[compile_ids_size]; // all hit clause_id -> compile_id size_t bool_match_ret = maat_compile_bool_matcher_match(compile_rt, is_last_scan, compile_state, (void **)compile_rules, compile_ids_size); if (bool_match_ret > 0) { qsort(compile_rules, bool_match_ret, sizeof(struct compile_rule *), compare_compile_rule); } for (size_t i = 0; i < bool_match_ret; i++) { compile_ids[i] = compile_rules[i]->compile_id; } return MIN(bool_match_ret, compile_ids_size); } void maat_compile_state_update(int vtable_id, struct maat_item *hit_items, size_t n_hit_item, struct maat_state *state) { size_t i = 0; size_t hit_cnt = n_hit_item; long long hit_group_ids[MAX_SCANNER_HIT_GROUP_NUM]; if (hit_cnt >= MAX_SCANNER_HIT_GROUP_NUM) { hit_cnt = MAX_SCANNER_HIT_GROUP_NUM; } struct maat *maat_instance = state->maat_instance; if (NULL == state->compile_state) { state->compile_state = maat_compile_state_new(state->thread_id); alignment_int64_array_add(maat_instance->stat->maat_compile_state_cnt, state->thread_id, 1); } for (i = 0; i < hit_cnt; i++) { maat_compile_state_update_hit_path(state->compile_state, hit_items[i].item_id, hit_items[i].group_id, vtable_id, state->scan_cnt, i); hit_group_ids[i] = hit_items[i].group_id; } /* update hit clause */ int compile_table_id = -1; if (state->compile_table_id > 0) { compile_table_id = state->compile_table_id; } else { compile_table_id = maat_instance->default_compile_table_id; } void *compile_rt = table_manager_get_runtime(maat_instance->tbl_mgr, compile_table_id); if (NULL == compile_rt) { return; } void *g2g_rt = table_manager_get_runtime(maat_instance->tbl_mgr, maat_instance->g2g_table_id); if (NULL == g2g_rt) { return; } long long super_group_ids[MAX_SCANNER_HIT_GROUP_NUM]; size_t super_group_cnt = group2group_runtime_get_super_groups(g2g_rt, hit_group_ids, hit_cnt, super_group_ids, MAX_SCANNER_HIT_GROUP_NUM); if (super_group_cnt >= MAX_SCANNER_HIT_GROUP_NUM) { super_group_cnt = MAX_SCANNER_HIT_GROUP_NUM; } for (int j = 0; j < super_group_cnt; j++) { maat_compile_state_update_hit_clause(state->compile_state, compile_rt, super_group_ids[j], vtable_id); maat_compile_state_update_hit_group(state->compile_state, super_group_ids[j], vtable_id); } for (int j = 0; j < hit_cnt; j++) { maat_compile_state_update_hit_clause(state->compile_state, compile_rt, hit_group_ids[j], vtable_id); maat_compile_state_update_hit_group(state->compile_state, hit_group_ids[j], vtable_id); } } size_t maat_compile_state_get_hit_groups(struct maat_compile_state *compile_state, struct maat_hit_group *hit_group_array, size_t array_size) { if (NULL == compile_state) { return 0; } size_t i = 0; struct maat_hit_group *hit_group = NULL; for (i = 0; i < utarray_len(compile_state->all_hit_groups) && i < array_size; i++) { hit_group = (struct maat_hit_group *)utarray_eltptr(compile_state->all_hit_groups, i); hit_group_array[i].group_id = hit_group->group_id; hit_group_array[i].vtable_id = hit_group->vtable_id; } return i; } UT_icd ut_compile_group_id_icd = {sizeof(long long), NULL, NULL, NULL}; size_t maat_compile_state_get_internal_hit_paths(struct maat_compile_state *compile_state, struct compile_runtime *compile_rt, struct group2group_runtime *g2g_rt, struct maat_hit_path *hit_path_array, size_t array_size) { size_t hit_path_cnt = 0; struct maat_internal_hit_path *internal_path = NULL; for (int i = 0; i < utarray_len(compile_state->internal_hit_paths); i++) { internal_path = (struct maat_internal_hit_path *)utarray_eltptr(compile_state->internal_hit_paths, i); /* NOTE: maybe one item has been deleted, but it's item_id still exist in internal_hit_paths */ long long super_group_ids[MAX_SCANNER_HIT_GROUP_NUM]; UT_array *valid_super_group_ids; utarray_new(valid_super_group_ids, &ut_compile_group_id_icd); size_t super_group_cnt = group2group_runtime_get_super_groups(g2g_rt, &(internal_path->group_id), 1, super_group_ids, MAX_SCANNER_HIT_GROUP_NUM); /* if super group is not referenced by compile, drop it */ for (size_t idx = 0; idx < super_group_cnt; idx++) { if (0 == group_referenced_by_compile(compile_rt, super_group_ids[idx])) { continue; } utarray_push_back(valid_super_group_ids, &super_group_ids[idx]); } /* if internal_path->group_id can be referenced directly by compile, so add it to hit_path which super_group_ids is -1 ------------------------------------------------------------------------------ NOTE: Add the hit path as long as the item is hit */ if (0 == utarray_len(valid_super_group_ids)) { long long super_group_id = -1; utarray_push_back(valid_super_group_ids, &super_group_id); } long long *p = NULL; struct maat_hit_path tmp_path; for (p = utarray_front(valid_super_group_ids); p != NULL && hit_path_cnt < array_size; p = utarray_next(valid_super_group_ids, p)) { memset(&tmp_path, 0, sizeof(tmp_path)); tmp_path.Nth_scan = internal_path->Nth_scan; tmp_path.item_id = internal_path->item_id; tmp_path.sub_group_id = internal_path->group_id; tmp_path.top_group_id = *p; tmp_path.vtable_id = internal_path->vtable_id; tmp_path.compile_id = -1; /* check if internal_path is duplicated from hit_path_array[] element */ if (hit_path_cnt > 0) { if (maat_compile_is_hit_path_existed(hit_path_array, hit_path_cnt, &tmp_path)) { continue; } } hit_path_array[hit_path_cnt] = tmp_path; hit_path_cnt++; } utarray_free(valid_super_group_ids); } return hit_path_cnt; }