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Improve scaling of memory use with large numbers of tiles, prep for suspend/resume support

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This commit is contained in:
Mike Primm 2011-08-14 14:20:45 +08:00 committed by mikeprimm
parent fb366ce36b
commit f5d5171f86
7 changed files with 95 additions and 14 deletions
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28
src/main/java/org/dynmap/MapManager.java
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@ -29,6 +29,7 @@ import org.dynmap.utils.LegacyMapChunkCache;
import org.dynmap.utils.MapChunkCache;
import org.dynmap.utils.NewMapChunkCache;
import org.dynmap.utils.SnapshotCache;
import org.dynmap.utils.TileFlags;
public class MapManager {
public AsynchronousQueue<MapTile> tileQueue;
@ -151,8 +152,8 @@ public class MapManager {
Location loc;
int map_index = -1; /* Which map are we on */
MapType map;
HashSet<MapTile> found = null;
HashSet<MapTile> rendered = null;
TileFlags found = null;
TileFlags rendered = null;
LinkedList<MapTile> renderQueue = null;
MapTile tile0 = null;
MapTile tile = null;
@ -178,8 +179,8 @@ public class MapManager {
FullWorldRenderState(DynmapWorld dworld, Location l, CommandSender sender, String mapname, int radius) {
world = dworld;
loc = l;
found = new HashSet<MapTile>();
rendered = new HashSet<MapTile>();
found = new TileFlags();
rendered = new TileFlags();
renderQueue = new LinkedList<MapTile>();
this.sender = sender;
if(radius < 0) {
@ -275,16 +276,16 @@ public class MapManager {
/* Now, prime the render queue */
for (MapTile mt : map.getTiles(loc)) {
if (!found.contains(mt)) {
found.add(mt);
if (!found.getFlag(mt.tileOrdinalX(), mt.tileOrdinalY())) {
found.setFlag(mt.tileOrdinalX(), mt.tileOrdinalY(), true);
renderQueue.add(mt);
}
}
if(world.seedloc != null) {
for(Location seed : world.seedloc) {
for (MapTile mt : map.getTiles(seed)) {
if (!found.contains(mt)) {
found.add(mt);
if (!found.getFlag(mt.tileOrdinalX(),mt.tileOrdinalY())) {
found.setFlag(mt.tileOrdinalX(),mt.tileOrdinalY(), true);
renderQueue.add(mt);
}
}
@ -326,16 +327,17 @@ public class MapManager {
/* Switch to not checking if rendered tile is blank - breaks us on skylands, where tiles can be nominally blank - just work off chunk cache empty */
if (cache.isEmpty() == false) {
tile.render(cache, mapname);
found.remove(tile);
rendered.add(tile);
found.setFlag(tile.tileOrdinalX(),tile.tileOrdinalY(),false);
rendered.setFlag(tile.tileOrdinalX(), tile.tileOrdinalY(), true);
for (MapTile adjTile : map.getAdjecentTiles(tile)) {
if (!found.contains(adjTile) && !rendered.contains(adjTile)) {
found.add(adjTile);
if (!found.getFlag(adjTile.tileOrdinalX(),adjTile.tileOrdinalY()) &&
!rendered.getFlag(adjTile.tileOrdinalX(),adjTile.tileOrdinalY())) {
found.setFlag(adjTile.tileOrdinalX(), adjTile.tileOrdinalY(), true);
renderQueue.add(adjTile);
}
}
}
found.remove(tile);
found.setFlag(tile.tileOrdinalX(), tile.tileOrdinalY(), false);
if(!cache.isEmpty()) {
rendercnt++;
timeaccum += System.currentTimeMillis() - tstart;

3
src/main/java/org/dynmap/MapTile.java
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@ -51,4 +51,7 @@ public abstract class MapTile {
public abstract boolean isRawBiomeDataNeeded();
public abstract boolean isBlockTypeDataNeeded();
public abstract int tileOrdinalX();
public abstract int tileOrdinalY();
}

3
src/main/java/org/dynmap/flat/FlatMap.java
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@ -518,6 +518,9 @@ public class FlatMap extends MapType {
public boolean isBiomeDataNeeded() { return false; }
public boolean isRawBiomeDataNeeded() { return false; }
public boolean isBlockTypeDataNeeded() { return true; }
public int tileOrdinalX() { return x; }
public int tileOrdinalY() { return y; }
}
@Override

4
src/main/java/org/dynmap/hdmap/HDMapTile.java
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@ -87,4 +87,8 @@ public class HDMapTile extends MapTile {
public MapTile[] getAdjecentTiles() {
return perspective.getAdjecentTiles(this);
}
public int tileOrdinalX() { return tx; }
public int tileOrdinalY() { return ty; }
}

3
src/main/java/org/dynmap/kzedmap/KzedMapTile.java
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@ -91,5 +91,6 @@ public class KzedMapTile extends MapTile {
public boolean isHightestBlockYDataNeeded() { return false; }
public boolean isRawBiomeDataNeeded() { return map.isRawBiomeDataNeeded(); }
public boolean isBlockTypeDataNeeded() { return true; }
public int tileOrdinalX() { return px >> 7; }
public int tileOrdinalY() { return py >> 7; }
}

2
src/main/java/org/dynmap/kzedmap/KzedZoomedMapTile.java
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@ -102,5 +102,7 @@ public class KzedZoomedMapTile extends MapTile {
public boolean isHightestBlockYDataNeeded() { return false; }
public boolean isRawBiomeDataNeeded() { return originalTile.isRawBiomeDataNeeded(); }
public boolean isBlockTypeDataNeeded() { return true; }
public int tileOrdinalX() { return originalTile.px >> 8; }
public int tileOrdinalY() { return originalTile.py >> 8; }
}

66
src/main/java/org/dynmap/utils/TileFlags.java Normal file
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@ -0,0 +1,66 @@
package org.dynmap.utils;
import java.util.HashMap;
/**
* scalable flags primitive - used for keeping track of potentially huge number of tiles
*
* Represents a flag for each tile, with 2D coordinates based on 0,0 origin. Flags are grouped
* 64 x 64, represented by an array of 64 longs. Each set is stored in a hashmap, keyed by a long
* computed by ((x/64)<<32)+(y/64).
*
*/
public class TileFlags {
private HashMap<Long, long[]> chunkmap = new HashMap<Long, long[]>();
private long last_key = Long.MIN_VALUE;
private long[] last_row;
public TileFlags() {
}
public boolean getFlag(int x, int y) {
long k = (((long)(x >> 6)) << 32) | (0xFFFFFFFFL & (long)(y >> 6));
long[] row;
if(k == last_key) {
row = last_row;
}
else {
row = chunkmap.get(k);
last_key = k;
last_row = row;
}
if(row == null)
return false;
else
return (row[y & 0x3F] & (1L << (x & 0x3F))) != 0;
}
public void setFlag(int x, int y, boolean f) {
long k = (((long)(x >> 6)) << 32) | (0xFFFFFFFFL & (long)(y >> 6));
long[] row;
if(k == last_key) {
row = last_row;
}
else {
row = chunkmap.get(k);
last_key = k;
last_row = row;
}
if(f) {
if(row == null) {
row = new long[64];
chunkmap.put(k, row);
last_row = row;
}
row[y & 0x3F] |= (1L << (x & 0x3F));
}
else {
if(row != null)
row[y & 0x3F] &= ~(1L << (x & 0x3F));
}
}
public void clear() {
chunkmap.clear();
last_row = null;
last_key = Long.MIN_VALUE;
}
}