From 0737afbe0ba4710f5110ea659700c2ca9717c434 Mon Sep 17 00:00:00 2001
From: Raoul Van den Berge <raoulvdberge@gmail.com>
Date: Sun, 9 Oct 2016 20:06:16 +0200
Subject: [PATCH] Fix cached item count for display going negative, fixes #343

---
 .../apiimpl/storage/fluid/GroupedFluidStorage.java          | 6 +++---
 .../apiimpl/storage/item/GroupedItemStorage.java            | 6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/main/java/refinedstorage/apiimpl/storage/fluid/GroupedFluidStorage.java b/src/main/java/refinedstorage/apiimpl/storage/fluid/GroupedFluidStorage.java
index 980a237bf..af7248f67 100755
--- a/src/main/java/refinedstorage/apiimpl/storage/fluid/GroupedFluidStorage.java
+++ b/src/main/java/refinedstorage/apiimpl/storage/fluid/GroupedFluidStorage.java
@@ -22,7 +22,7 @@ public class GroupedFluidStorage implements IGroupedFluidStorage {
     }
 
     @Override
-    public void rebuild() {
+    public synchronized void rebuild() {
         storages.clear();
 
         network.getNodeGraph().all().stream()
@@ -41,7 +41,7 @@ public class GroupedFluidStorage implements IGroupedFluidStorage {
     }
 
     @Override
-    public void add(@Nonnull FluidStack stack, boolean rebuilding) {
+    public synchronized void add(@Nonnull FluidStack stack, boolean rebuilding) {
         list.add(stack);
 
         if (!rebuilding) {
@@ -50,7 +50,7 @@ public class GroupedFluidStorage implements IGroupedFluidStorage {
     }
 
     @Override
-    public void remove(@Nonnull FluidStack stack) {
+    public synchronized void remove(@Nonnull FluidStack stack) {
         if (list.remove(stack, true)) {
             network.sendFluidStorageDeltaToClient(stack, -stack.amount);
         }
diff --git a/src/main/java/refinedstorage/apiimpl/storage/item/GroupedItemStorage.java b/src/main/java/refinedstorage/apiimpl/storage/item/GroupedItemStorage.java
index 17cca61de..5c9bdf487 100755
--- a/src/main/java/refinedstorage/apiimpl/storage/item/GroupedItemStorage.java
+++ b/src/main/java/refinedstorage/apiimpl/storage/item/GroupedItemStorage.java
@@ -23,7 +23,7 @@ public class GroupedItemStorage implements IGroupedItemStorage {
     }
 
     @Override
-    public void rebuild() {
+    public synchronized void rebuild() {
         storages.clear();
 
         network.getNodeGraph().all().stream()
@@ -50,7 +50,7 @@ public class GroupedItemStorage implements IGroupedItemStorage {
     }
 
     @Override
-    public void add(@Nonnull ItemStack stack, boolean rebuilding) {
+    public synchronized void add(@Nonnull ItemStack stack, boolean rebuilding) {
         list.add(stack);
 
         if (!rebuilding) {
@@ -59,7 +59,7 @@ public class GroupedItemStorage implements IGroupedItemStorage {
     }
 
     @Override
-    public void remove(@Nonnull ItemStack stack) {
+    public synchronized void remove(@Nonnull ItemStack stack) {
         if (list.remove(stack, !network.hasPattern(stack))) {
             network.sendItemStorageDeltaToClient(stack, -stack.stackSize);
         }