113 lines
2.7 KiB
C
113 lines
2.7 KiB
C
#if defined MYDDAS_ODBC || defined MYDDAS_MYSQL
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#include "Yap.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include "myddas.h"
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#include "myddas_structs.h"
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#ifdef MYDDAS_STATS
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#include "myddas_statistics.h"
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#endif
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MYDDAS_GLOBAL
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myddas_init_initialize_myddas(void){
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MYDDAS_GLOBAL global = NULL;
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/* We cannot call MYDDAS_MALLOC were because the global
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register isn't yet initialized */
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global = (MYDDAS_GLOBAL) malloc (sizeof(struct myddas_global));
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#ifdef DEBUG
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printf ("MALLOC %p %s %d\n",global,__FILE__,__LINE__);
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#endif
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global->myddas_top_connections = NULL;
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#ifdef MYDDAS_TOP_LEVEL
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global->myddas_top_level_connection = NULL;
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#endif
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#ifdef MYDDAS_STATS
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global->myddas_statistics = (MYDDAS_GLOBAL_STATS) malloc (sizeof(struct myddas_global_stats));
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#ifdef DEBUG
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printf ("MALLOC %p %s %d\n",global->myddas_statistics,__FILE__,__LINE__);
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#endif
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global->myddas_statistics->stats = NULL;
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#endif
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#ifdef DEBUG
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/* We first malloc for this struct and the stats struct */
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#ifdef MYDDAS_STATS
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global->malloc_called = 2;
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global->memory_allocated = sizeof(struct myddas_global) + sizeof(struct myddas_global_stats);
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#else
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global->malloc_called = 1;
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global->memory_allocated = sizeof(struct myddas_global);
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#endif /* MYDDAS_STATS */
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global->free_called = 0;
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global->memory_freed = 0;
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#endif
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return global;
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}
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/* Inserts the new node on the front of the list */
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MYDDAS_UTIL_CONNECTION
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myddas_init_initialize_connection(void *conn,void *enviromment,
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MYDDAS_UTIL_CONNECTION next){
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MYDDAS_UTIL_CONNECTION new = NULL;
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MYDDAS_MALLOC(new,struct myddas_list_connection);
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if (new == NULL)
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{
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return NULL;
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}
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new->predicates=NULL;
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new->connection=conn;
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new->odbc_enviromment=enviromment;
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/* It saves n queries, doing at once n+1 queries */
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new->total_number_queries=0; //Default
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new->actual_number_queries=0;
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new->queries = NULL;
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/* List integrity */
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new->next=next;
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new->previous=NULL;
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/* If there's already at least one node
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on the list */
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if (next != NULL)
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next->previous=new;
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#ifdef MYDDAS_STATS
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new->stats = NULL;
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new->stats = myddas_stats_initialize_connection_stats();
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#endif
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return new;
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}
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MYDDAS_UTIL_PREDICATE
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myddas_init_initialize_predicate(char *pred_name, int pred_arity,
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char *pred_module, MYDDAS_UTIL_PREDICATE next){
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MYDDAS_UTIL_PREDICATE new = NULL;
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MYDDAS_MALLOC(new,struct myddas_list_preds);
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if (new == NULL)
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{
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return NULL;
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}
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new->pred_name=pred_name;
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new->pred_arity=pred_arity;
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new->pred_module=pred_module;
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/* List integrity */
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new->next=next;
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new->previous=NULL;
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/* If there's already at least one node
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on the list */
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if (next != NULL)
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next->previous=new;
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return new;
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}
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#endif
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