Replace std::list by std::vector into ClientMap::updateDrawList, Map::timerUpdate and ServerMap::save().

This will speedup the loop reading into those functions

src/clientmap.cpp

@@ -247,7 +247,7 @@ void ClientMap::updateDrawList(video::IVideoDriver* driver)
 				continue;
 		}
 
-		std::list< MapBlock * > sectorblocks;
+		MapBlockVect sectorblocks;
 		sector->getBlocks(sectorblocks);
 
 		/*
@@ -256,8 +256,8 @@ void ClientMap::updateDrawList(video::IVideoDriver* driver)
 
 		u32 sector_blocks_drawn = 0;
 
-		std::list< MapBlock * >::iterator i;
+		for(MapBlockVect::iterator i = sectorblocks.begin();
-		for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
+				i != sectorblocks.end(); i++)
 		{
 			MapBlock *block = *i;
 

src/map.cpp

@@ -1440,23 +1440,20 @@ void Map::timerUpdate(float dtime, float unload_timeout,
 
 		bool all_blocks_deleted = true;
 
-		std::list<MapBlock*> blocks;
+		MapBlockVect blocks;
 		sector->getBlocks(blocks);
 
-		for(std::list<MapBlock*>::iterator i = blocks.begin();
+		for(MapBlockVect::iterator i = blocks.begin();
-				i != blocks.end(); ++i)
+				i != blocks.end(); ++i) {
-		{
 			MapBlock *block = (*i);
 
 			block->incrementUsageTimer(dtime);
 
-			if(block->refGet() == 0 && block->getUsageTimer() > unload_timeout)
+			if(block->refGet() == 0 && block->getUsageTimer() > unload_timeout) {
-			{
 				v3s16 p = block->getPos();
 
 				// Save if modified
-				if (block->getModified() != MOD_STATE_CLEAN && save_before_unloading)
+				if (block->getModified() != MOD_STATE_CLEAN && save_before_unloading) {
-				{
 					modprofiler.add(block->getModifiedReason(), 1);
 					if (!saveBlock(block))
 						continue;
@@ -1471,15 +1468,13 @@ void Map::timerUpdate(float dtime, float unload_timeout,
 
 				deleted_blocks_count++;
 			}
-			else
+			else {
-			{
 				all_blocks_deleted = false;
 				block_count_all++;
 			}
 		}
 
-		if(all_blocks_deleted)
+		if(all_blocks_deleted) {
-		{
 			sector_deletion_queue.push_back(si->first);
 		}
 	}
@@ -2982,8 +2977,7 @@ std::string ServerMap::getBlockFilename(v3s16 p)
 void ServerMap::save(ModifiedState save_level)
 {
 	DSTACK(__FUNCTION_NAME);
-	if(m_map_saving_enabled == false)
+	if(m_map_saving_enabled == false) {
-	{
 		infostream<<"WARNING: Not saving map, saving disabled."<<std::endl;
 		return;
 	}
@@ -2992,8 +2986,7 @@ void ServerMap::save(ModifiedState save_level)
 		infostream<<"ServerMap: Saving whole map, this can take time."
 				<<std::endl;
 
-	if(m_map_metadata_changed || save_level == MOD_STATE_CLEAN)
+	if(m_map_metadata_changed || save_level == MOD_STATE_CLEAN) {
-	{
 		saveMapMeta();
 	}
 
@@ -3008,30 +3001,27 @@ void ServerMap::save(ModifiedState save_level)
 	bool save_started = false;
 
 	for(std::map<v2s16, MapSector*>::iterator i = m_sectors.begin();
-		i != m_sectors.end(); ++i)
+		i != m_sectors.end(); ++i) {
-	{
 		ServerMapSector *sector = (ServerMapSector*)i->second;
 		assert(sector->getId() == MAPSECTOR_SERVER);
 
-		if(sector->differs_from_disk || save_level == MOD_STATE_CLEAN)
+		if(sector->differs_from_disk || save_level == MOD_STATE_CLEAN) {
-		{
 			saveSectorMeta(sector);
 			sector_meta_count++;
 		}
-		std::list<MapBlock*> blocks;
+
+		MapBlockVect blocks;
 		sector->getBlocks(blocks);
 
-		for(std::list<MapBlock*>::iterator j = blocks.begin();
+		for(MapBlockVect::iterator j = blocks.begin();
-			j != blocks.end(); ++j)
+			j != blocks.end(); ++j) {
-		{
 			MapBlock *block = *j;
 
 			block_count_all++;
 
-			if(block->getModified() >= (u32)save_level)
+			if(block->getModified() >= (u32)save_level) {
-			{
 				// Lazy beginSave()
-				if(!save_started){
+				if(!save_started) {
 					beginSave();
 					save_started = true;
 				}
@@ -3049,6 +3039,7 @@ void ServerMap::save(ModifiedState save_level)
 			}
 		}
 	}
+
 	if(save_started)
 		endSave();
 
@@ -3056,8 +3047,7 @@ void ServerMap::save(ModifiedState save_level)
 		Only print if something happened or saved whole map
 	*/
 	if(save_level == MOD_STATE_CLEAN || sector_meta_count != 0
-			|| block_count != 0)
+			|| block_count != 0) {
-	{
 		infostream<<"ServerMap: Written: "
 				<<sector_meta_count<<" sector metadata files, "
 				<<block_count<<" block files"
@@ -3085,14 +3075,12 @@ void ServerMap::listAllLoadedBlocks(std::vector<v3s16> &dst)
 	{
 		MapSector *sector = si->second;
 
-		std::list<MapBlock*> blocks;
+		MapBlockVect blocks;
 		sector->getBlocks(blocks);
 
-		for(std::list<MapBlock*>::iterator i = blocks.begin();
+		for(MapBlockVect::iterator i = blocks.begin();
-				i != blocks.end(); ++i)
+				i != blocks.end(); ++i) {
-		{
+			v3s16 p = (*i)->getPos();
-			MapBlock *block = (*i);
-			v3s16 p = block->getPos();
 			dst.push_back(p);
 		}
 	}

src/mapblock.h

@@ -614,6 +614,8 @@ private:
 	int m_refcount;
 };
 
+typedef std::vector<MapBlock*> MapBlockVect;
+
 inline bool blockpos_over_limit(v3s16 p)
 {
 	return

src/mapsector.cpp

@@ -133,7 +133,7 @@ void MapSector::deleteBlock(MapBlock *block)
 	delete block;
 }
 
-void MapSector::getBlocks(std::list<MapBlock*> &dest)
+void MapSector::getBlocks(MapBlockVect &dest)
 {
 	for(std::map<s16, MapBlock*>::iterator bi = m_blocks.begin();
 		bi != m_blocks.end(); ++bi)

src/mapsector.h

@@ -22,11 +22,11 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include "irrlichttypes.h"
 #include "irr_v2d.h"
+#include "mapblock.h"
 #include <ostream>
 #include <map>
-#include <list>
+#include <vector>
 
-class MapBlock;
 class Map;
 class IGameDef;
 
@@ -61,7 +61,7 @@ public:
 	
 	void deleteBlock(MapBlock *block);
 	
-	void getBlocks(std::list<MapBlock*> &dest);
+	void getBlocks(MapBlockVect &dest);
 	
 	// Always false at the moment, because sector contains no metadata.
 	bool differs_from_disk;