Mapreg saving overhaul

Server only saves variables that were changed, not all of them. Special Thanks to Yommy <3~!

Signed-off-by: shennetsind <ind@henn.et>

1 files changed, 186 insertions, 105 deletions

diff --git a/src/map/mapreg_sql.c b/src/map/mapreg_sql.c
index 7782f7f02..bac3cea13 100644
--- a/src/map/mapreg_sql.c
+++ b/src/map/mapreg_sql.c
@@ -1,8 +1,10 @@
-// Copyright (c) Athena Dev Teams - Licensed under GNU GPL
-// For more information, see LICENCE in the main folder
+// Copyright (c) Hercules Dev Team, licensed under GNU GPL.
+// See the LICENSE file
+// Portions Copyright (c) Athena Dev Teams
 
 #include "../common/cbasetypes.h"
 #include "../common/db.h"
+#include "../common/ers.h"
 #include "../common/malloc.h"
 #include "../common/showmsg.h"
 #include "../common/sql.h"
@@ -10,54 +12,69 @@
 #include "../common/timer.h"
 #include "map.h" // mmysql_handle
 #include "script.h"
+#include "mapreg.h"
 #include <stdlib.h>
 #include <string.h>
 
 static DBMap* mapreg_db = NULL; // int var_id -> int value
 static DBMap* mapregstr_db = NULL; // int var_id -> char* value
+static struct eri *mapreg_ers; //[Ind/Hercules]
 
 static char mapreg_table[32] = "mapreg";
-static bool mapreg_dirty = false;
+static bool mapreg_i_dirty = false;
+static bool mapreg_str_dirty = false;
+
 #define MAPREG_AUTOSAVE_INTERVAL (300*1000)
 
 
 /// Looks up the value of an integer variable using its uid.
-int mapreg_readreg(int uid)
-{
-	return idb_iget(mapreg_db, uid);
+int mapreg_readreg(int uid) {
+	struct mapreg_save *m = idb_get(mapreg_db, uid);
+	return m?m->u.i:0;
 }
 
 /// Looks up the value of a string variable using its uid.
-char* mapreg_readregstr(int uid)
-{
-	return idb_get(mapregstr_db, uid);
+char* mapreg_readregstr(int uid) {
+	struct mapreg_save *m = idb_get(mapregstr_db, uid);
+	return m?m->u.str:NULL;
 }
 
 /// Modifies the value of an integer variable.
-bool mapreg_setreg(int uid, int val)
-{
+bool mapreg_setreg(int uid, int val) {
+	struct mapreg_save *m;
 	int num = (uid & 0x00ffffff);
 	int i   = (uid & 0xff000000) >> 24;
 	const char* name = get_str(num);
 
-	if( val != 0 )
-	{
-		if( idb_iput(mapreg_db,uid,val) )
-			mapreg_dirty = true; // already exists, delay write
-		else if(name[1] != '@')
-		{// write new variable to database
-			char tmp_str[32*2+1];
-			Sql_EscapeStringLen(mmysql_handle, tmp_str, name, strnlen(name, 32));
-			if( SQL_ERROR == Sql_Query(mmysql_handle, "INSERT INTO `%s`(`varname`,`index`,`value`) VALUES ('%s','%d','%d')", mapreg_table, tmp_str, i, val) )
-				Sql_ShowDebug(mmysql_handle);
+	if( val != 0 ) {
+		if( (m = idb_get(mapreg_db,uid)) ) {
+			m->u.i = val;
+			if(name[1] != '@') {
+				m->save = true;
+				mapreg_i_dirty = true;
+			}
+		} else {
+			m = ers_alloc(mapreg_ers, struct mapreg_save);
+
+			m->u.i = val;
+			m->uid = uid;
+			m->save = false;
+
+			if(name[1] != '@') {// write new variable to database
+				char tmp_str[32*2+1];
+				Sql_EscapeStringLen(mmysql_handle, tmp_str, name, strnlen(name, 32));
+				if( SQL_ERROR == Sql_Query(mmysql_handle, "INSERT INTO `%s`(`varname`,`index`,`value`) VALUES ('%s','%d','%d')", mapreg_table, tmp_str, i, val) )
+					Sql_ShowDebug(mmysql_handle);
+			}
+			idb_put(mapreg_db, uid, m);
+		}
+	} else { // val == 0
+		if( (m = idb_get(mapreg_db,uid)) ) {
+			ers_free(mapreg_ers, m);
 		}
-	}
-	else // val == 0
-	{
 		idb_remove(mapreg_db,uid);
 
-		if( name[1] != '@' )
-		{// Remove from database because it is unused.
+		if( name[1] != '@' ) {// Remove from database because it is unused.
 			if( SQL_ERROR == Sql_Query(mmysql_handle, "DELETE FROM `%s` WHERE `varname`='%s' AND `index`='%d'", mapreg_table, name, i) )
 				Sql_ShowDebug(mmysql_handle);
 		}
@@ -67,32 +84,48 @@ bool mapreg_setreg(int uid, int val)
 }
 
 /// Modifies the value of a string variable.
-bool mapreg_setregstr(int uid, const char* str)
-{
+bool mapreg_setregstr(int uid, const char* str) {
+	struct mapreg_save *m;
 	int num = (uid & 0x00ffffff);
 	int i   = (uid & 0xff000000) >> 24;
 	const char* name = get_str(num);
 	
-	if( str == NULL || *str == 0 )
-	{
+	if( str == NULL || *str == 0 ) {
 		if(name[1] != '@') {
 			if( SQL_ERROR == Sql_Query(mmysql_handle, "DELETE FROM `%s` WHERE `varname`='%s' AND `index`='%d'", mapreg_table, name, i) )
 				Sql_ShowDebug(mmysql_handle);
 		}
+		if( (m = idb_get(mapregstr_db,uid)) ) {
+			if( m->u.str != NULL )
+				aFree(m->u.str);
+			ers_free(mapreg_ers, m);
+		}
 		idb_remove(mapregstr_db,uid);
-	}
-	else
-	{
-		if (idb_put(mapregstr_db,uid, aStrdup(str)))
-			mapreg_dirty = true;
-		else if(name[1] != '@') { //put returned null, so we must insert.
-			// Someone is causing a database size infinite increase here without name[1] != '@' [Lance]
-			char tmp_str[32*2+1];
-			char tmp_str2[255*2+1];
-			Sql_EscapeStringLen(mmysql_handle, tmp_str, name, strnlen(name, 32));
-			Sql_EscapeStringLen(mmysql_handle, tmp_str2, str, strnlen(str, 255));
-			if( SQL_ERROR == Sql_Query(mmysql_handle, "INSERT INTO `%s`(`varname`,`index`,`value`) VALUES ('%s','%d','%s')", mapreg_table, tmp_str, i, tmp_str2) )
-				Sql_ShowDebug(mmysql_handle);
+	} else {
+		if( (m = idb_get(mapregstr_db,uid)) ) {
+			if( m->u.str != NULL )
+				aFree(m->u.str);
+			m->u.str = aStrdup(str);
+			if(name[1] != '@') {
+				mapreg_str_dirty = true;
+				m->save = true;
+			}
+		} else {
+			m = ers_alloc(mapreg_ers, struct mapreg_save);
+
+			m->uid = uid;
+			m->u.str = aStrdup(str);
+			m->save = false;
+			
+			if(name[1] != '@') { //put returned null, so we must insert.
+				char tmp_str[32*2+1];
+				char tmp_str2[255*2+1];
+				Sql_EscapeStringLen(mmysql_handle, tmp_str, name, strnlen(name, 32));
+				Sql_EscapeStringLen(mmysql_handle, tmp_str2, str, strnlen(str, 255));
+				if( SQL_ERROR == Sql_Query(mmysql_handle, "INSERT INTO `%s`(`varname`,`index`,`value`) VALUES ('%s','%d','%s')", mapreg_table, tmp_str, i, tmp_str2) )
+					Sql_ShowDebug(mmysql_handle);
+			}
+			idb_put(mapregstr_db, uid, m);
 		}
 	}
 
@@ -100,8 +133,7 @@ bool mapreg_setregstr(int uid, const char* str)
 }
 
 /// Loads permanent variables from database
-static void script_load_mapreg(void)
-{
+static void script_load_mapreg(void) {
 	/*
 	        0        1       2
 	   +-------------------------+
@@ -126,97 +158,147 @@ static void script_load_mapreg(void)
 	SqlStmt_BindColumn(stmt, 1, SQLDT_INT, &index, 0, NULL, NULL);
 	SqlStmt_BindColumn(stmt, 2, SQLDT_STRING, &value[0], sizeof(value), NULL, NULL);
 	
-	while ( SQL_SUCCESS == SqlStmt_NextRow(stmt) )
-	{
+	while ( SQL_SUCCESS == SqlStmt_NextRow(stmt) ) {
+		struct mapreg_save *m = NULL;
 		int s = add_str(varname);
 		int i = index;
 
-		if( varname[length-1] == '$' )
-			idb_put(mapregstr_db, (i<<24)|s, aStrdup(value));
-		else
-			idb_iput(mapreg_db, (i<<24)|s, atoi(value));
+		if( varname[length-1] == '$' ) {
+			if( idb_exists(mapregstr_db, (i<<24)|s) ) {
+				ShowWarning("load_mapreg: duplicate! '%s' => '%s' skipping...\n",varname,value);
+				continue;
+			}
+		} else {
+			if( idb_exists(mapreg_db, (i<<24)|s) ) {
+				ShowWarning("load_mapreg: duplicate! '%s' => '%s' skipping...\n",varname,value);
+				continue;
+			}
+		}
+		
+		m = ers_alloc(mapreg_ers, struct mapreg_save);
+		m->uid = (i<<24)|s;
+		m->save = false;
+		if( varname[length-1] == '$' ) {
+			m->u.str = aStrdup(value);
+			idb_put(mapregstr_db, m->uid, m);
+		} else {
+			m->u.i = atoi(value);
+			idb_put(mapreg_db, m->uid, m);
+		}
 	}
 	
 	SqlStmt_Free(stmt);
 
-	mapreg_dirty = false;
+	mapreg_i_dirty = false;
+	mapreg_str_dirty = false;
 }
 
 /// Saves permanent variables to database
-static void script_save_mapreg(void)
-{
+static void script_save_mapreg(void) {
 	DBIterator* iter;
-	DBData *data;
-	DBKey key;
-
-	iter = db_iterator(mapreg_db);
-	for( data = iter->first(iter,&key); iter->exists(iter); data = iter->next(iter,&key) )
-	{
-		int num = (key.i & 0x00ffffff);
-		int i   = (key.i & 0xff000000) >> 24;
-		const char* name = get_str(num);
-
-		if( name[1] == '@' )
-			continue;
-
-		if( SQL_ERROR == Sql_Query(mmysql_handle, "UPDATE `%s` SET `value`='%d' WHERE `varname`='%s' AND `index`='%d'", mapreg_table, db_data2i(data), name, i) )
-			Sql_ShowDebug(mmysql_handle);
+	struct mapreg_save *m = NULL;
+
+	if( mapreg_i_dirty ) {
+		iter = db_iterator(mapreg_db);
+		for( m = dbi_first(iter); dbi_exists(iter); m = dbi_next(iter) ) {
+			if( m->save ) {
+				int num = (m->uid & 0x00ffffff);
+				int i   = (m->uid & 0xff000000) >> 24;
+				const char* name = get_str(num);
+
+				if( SQL_ERROR == Sql_Query(mmysql_handle, "UPDATE `%s` SET `value`='%d' WHERE `varname`='%s' AND `index`='%d' LIMIT 1", mapreg_table, m->u.i, name, i) )
+					Sql_ShowDebug(mmysql_handle);
+				m->save = false;
+			}
+		}
+		dbi_destroy(iter);
+		mapreg_i_dirty = false;
 	}
-	dbi_destroy(iter);
 
-	iter = db_iterator(mapregstr_db);
-	for( data = iter->first(iter,&key); iter->exists(iter); data = iter->next(iter,&key) )
-	{
-		int num = (key.i & 0x00ffffff);
-		int i   = (key.i & 0xff000000) >> 24;
-		const char* name = get_str(num);
-		char tmp_str2[2*255+1];
-
-		if( name[1] == '@' )
-			continue;
-
-		Sql_EscapeStringLen(mmysql_handle, tmp_str2, db_data2ptr(data), safestrnlen(db_data2ptr(data), 255));
-		if( SQL_ERROR == Sql_Query(mmysql_handle, "UPDATE `%s` SET `value`='%s' WHERE `varname`='%s' AND `index`='%d'", mapreg_table, tmp_str2, name, i) )
-			Sql_ShowDebug(mmysql_handle);
+	if( mapreg_str_dirty ) {
+		iter = db_iterator(mapregstr_db);
+		for( m = dbi_first(iter); dbi_exists(iter); m = dbi_next(iter) ) {
+			if( m->save ) {
+				int num = (m->uid & 0x00ffffff);
+				int i   = (m->uid & 0xff000000) >> 24;
+				const char* name = get_str(num);
+				char tmp_str2[2*255+1];
+
+				Sql_EscapeStringLen(mmysql_handle, tmp_str2, m->u.str, safestrnlen(m->u.str, 255));
+				if( SQL_ERROR == Sql_Query(mmysql_handle, "UPDATE `%s` SET `value`='%s' WHERE `varname`='%s' AND `index`='%d' LIMIT 1", mapreg_table, tmp_str2, name, i) )
+					Sql_ShowDebug(mmysql_handle);
+				m->save = false;
+			}
+		}
+		dbi_destroy(iter);
+		mapreg_str_dirty = false;
 	}
-	dbi_destroy(iter);
-
-	mapreg_dirty = false;
 }
 
-static int script_autosave_mapreg(int tid, unsigned int tick, int id, intptr_t data)
-{
-	if( mapreg_dirty )
-		script_save_mapreg();
-
+static int script_autosave_mapreg(int tid, unsigned int tick, int id, intptr_t data) {
+	script_save_mapreg();
 	return 0;
 }
 
 
-void mapreg_reload(void)
-{
-	if( mapreg_dirty )
-		script_save_mapreg();
+void mapreg_reload(void) {
+	DBIterator* iter;
+	struct mapreg_save *m = NULL;
 
+	script_save_mapreg();
+
+	iter = db_iterator(mapreg_db);
+	for( m = dbi_first(iter); dbi_exists(iter); m = dbi_next(iter) ) {
+		ers_free(mapreg_ers, m);
+	}
+	dbi_destroy(iter);
+	
+	iter = db_iterator(mapregstr_db);
+	for( m = dbi_first(iter); dbi_exists(iter); m = dbi_next(iter) ) {
+		if( m->u.str != NULL ) {
+			aFree(m->u.str);
+		}
+		ers_free(mapreg_ers, m);
+	}
+	dbi_destroy(iter);
+	
 	db_clear(mapreg_db);
 	db_clear(mapregstr_db);
 
 	script_load_mapreg();
 }
 
-void mapreg_final(void)
-{
-	if( mapreg_dirty )
-		script_save_mapreg();
+void mapreg_final(void) {
+	DBIterator* iter;
+	struct mapreg_save *m = NULL;
+	
+	script_save_mapreg();
 
+	iter = db_iterator(mapreg_db);
+	for( m = dbi_first(iter); dbi_exists(iter); m = dbi_next(iter) ) {
+		ers_free(mapreg_ers, m);
+	}
+	dbi_destroy(iter);
+	
+	iter = db_iterator(mapregstr_db);
+	for( m = dbi_first(iter); dbi_exists(iter); m = dbi_next(iter) ) {
+		if( m->u.str != NULL ) {
+			aFree(m->u.str);
+		}
+		ers_free(mapreg_ers, m);
+	}
+	dbi_destroy(iter);
+		
 	db_destroy(mapreg_db);
 	db_destroy(mapregstr_db);
+	
+	ers_destroy(mapreg_ers);
 }
 
-void mapreg_init(void)
-{
+void mapreg_init(void) {
 	mapreg_db = idb_alloc(DB_OPT_BASE);
-	mapregstr_db = idb_alloc(DB_OPT_RELEASE_DATA);
+	mapregstr_db = idb_alloc(DB_OPT_BASE);
+	mapreg_ers = ers_new(sizeof(struct mapreg_save), "mapreg_sql.c::mapreg_ers", ERS_OPT_NONE);
 
 	script_load_mapreg();
 
@@ -224,8 +306,7 @@ void mapreg_init(void)
 	add_timer_interval(gettick() + MAPREG_AUTOSAVE_INTERVAL, script_autosave_mapreg, 0, 0, MAPREG_AUTOSAVE_INTERVAL);
 }
 
-bool mapreg_config_read(const char* w1, const char* w2)
-{
+bool mapreg_config_read(const char* w1, const char* w2) {
 	if(!strcmpi(w1, "mapreg_db"))
 		safestrncpy(mapreg_table, w2, sizeof(mapreg_table));
 	else