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Optimize minion removal by only acquiring writelock if we need it

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This commit is contained in:
TomTom 2024-08-02 16:30:46 +02:00
parent 80127bbae9
commit faea733a55
1 changed files with 25 additions and 5 deletions
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30
src/main/java/com/artillexstudios/axminions/minions/MinionArea.java
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@ -103,16 +103,19 @@ public final class MinionArea {
int chunkX = (int) Math.floor(location.getX()) >> 4;
int chunkZ = (int) Math.floor(location.getZ()) >> 4;
this.writeLock.lock();
// Load the list into stack memory for faster access
ObjectArrayList<ChunkPos> positions = this.positions;
boolean needsWrite = false;
this.readLock.lock();
try {
this.writeCount++;
// Load the list into stack memory for faster access
ObjectArrayList<ChunkPos> positions = this.positions;
this.readCount++;
ObjectListIterator<ChunkPos> positionIterator = positions.iterator();
while (positionIterator.hasNext()) {
ChunkPos nextPos = positionIterator.next();
if (nextPos.x() == chunkX && nextPos.z() == chunkZ) {
if (nextPos.removeMinion(minion)) {
needsWrite = true;
positionIterator.remove();
}
@ -120,7 +123,24 @@ public final class MinionArea {
}
}
} finally {
this.writeLock.unlock();
this.readLock.unlock();
}
if (needsWrite) {
this.writeLock.lock();
try {
this.writeCount++;
ObjectListIterator<ChunkPos> positionIterator = positions.iterator();
while (positionIterator.hasNext()) {
ChunkPos nextPos = positionIterator.next();
if (nextPos.x() == chunkX && nextPos.z() == chunkZ) {
positionIterator.remove();
break;
}
}
} finally {
this.writeLock.unlock();
}
}
}