9 files changed, 106 insertions, 12 deletions
diff --git a/libs/hwui/RenderNode.cpp b/libs/hwui/RenderNode.cpp
index 31e45558139d..6761435a8171 100644
--- a/libs/hwui/RenderNode.cpp
+++ b/libs/hwui/RenderNode.cpp
@@ -27,6 +27,7 @@
 #include "DamageAccumulator.h"
 #include "pipeline/skia/SkiaDisplayList.h"
 #endif
+#include "utils/FatVector.h"
 #include "utils/MathUtils.h"
 #include "utils/StringUtils.h"
 #include "utils/TraceUtils.h"
@@ -36,7 +37,6 @@
 #include <atomic>
 #include <sstream>
 #include <string>
-#include <ui/FatVector.h>
 
 namespace android {
 namespace uirenderer {
diff --git a/libs/hwui/RenderNode.h b/libs/hwui/RenderNode.h
index c0ec2174bb35..d55e5b0ce836 100644
--- a/libs/hwui/RenderNode.h
+++ b/libs/hwui/RenderNode.h
@@ -27,8 +27,6 @@
 
 #include <androidfw/ResourceTypes.h>
 
-#include <ui/FatVector.h>
-
 #include "AnimatorManager.h"
 #include "CanvasTransform.h"
 #include "Debug.h"
@@ -37,6 +35,7 @@
 #include "RenderProperties.h"
 #include "pipeline/skia/SkiaDisplayList.h"
 #include "pipeline/skia/SkiaLayer.h"
+#include "utils/FatVector.h"
 
 #include <vector>
 
diff --git a/libs/hwui/jni/FontFamily.cpp b/libs/hwui/jni/FontFamily.cpp
index a2fef1e19328..0ce04a2437b9 100644
--- a/libs/hwui/jni/FontFamily.cpp
+++ b/libs/hwui/jni/FontFamily.cpp
@@ -29,9 +29,9 @@
 
 #include <hwui/MinikinSkia.h>
 #include <hwui/Typeface.h>
+#include <utils/FatVector.h>
 #include <minikin/FontFamily.h>
 #include <minikin/LocaleList.h>
-#include <ui/FatVector.h>
 
 #include <memory>
 
@@ -104,7 +104,7 @@ static jlong FontFamily_getFamilyReleaseFunc(CRITICAL_JNI_PARAMS) {
 
 static bool addSkTypeface(NativeFamilyBuilder* builder, sk_sp<SkData>&& data, int ttcIndex,
         jint weight, jint italic) {
-    FatVector<SkFontArguments::Axis, 2> skiaAxes;
+    uirenderer::FatVector<SkFontArguments::Axis, 2> skiaAxes;
     for (const auto& axis : builder->axes) {
         skiaAxes.emplace_back(SkFontArguments::Axis{axis.axisTag, axis.value});
     }
diff --git a/libs/hwui/jni/fonts/Font.cpp b/libs/hwui/jni/fonts/Font.cpp
index 5714cd1d0390..7e8f8d8d173c 100644
--- a/libs/hwui/jni/fonts/Font.cpp
+++ b/libs/hwui/jni/fonts/Font.cpp
@@ -28,8 +28,8 @@
 
 #include <hwui/MinikinSkia.h>
 #include <hwui/Typeface.h>
+#include <utils/FatVector.h>
 #include <minikin/FontFamily.h>
-#include <ui/FatVector.h>
 
 #include <memory>
 
@@ -93,7 +93,7 @@ static jlong Font_Builder_build(JNIEnv* env, jobject clazz, jlong builderPtr, jo
     sk_sp<SkData> data(SkData::MakeWithProc(fontPtr, fontSize,
             release_global_ref, reinterpret_cast<void*>(fontRef)));
 
-    FatVector<SkFontArguments::Axis, 2> skiaAxes;
+    uirenderer::FatVector<SkFontArguments::Axis, 2> skiaAxes;
     for (const auto& axis : builder->axes) {
         skiaAxes.emplace_back(SkFontArguments::Axis{axis.axisTag, axis.value});
     }
diff --git a/libs/hwui/pipeline/skia/ReorderBarrierDrawables.h b/libs/hwui/pipeline/skia/ReorderBarrierDrawables.h
index d669f84c5ee2..cfc0f9b258da 100644
--- a/libs/hwui/pipeline/skia/ReorderBarrierDrawables.h
+++ b/libs/hwui/pipeline/skia/ReorderBarrierDrawables.h
@@ -21,7 +21,7 @@
 
 #include <SkCanvas.h>
 #include <SkDrawable.h>
-#include <ui/FatVector.h>
+#include <utils/FatVector.h>
 
 namespace android {
 namespace uirenderer {
diff --git a/libs/hwui/renderthread/RenderThread.cpp b/libs/hwui/renderthread/RenderThread.cpp
index 206b58f62ea7..cae3e3b5188c 100644
--- a/libs/hwui/renderthread/RenderThread.cpp
+++ b/libs/hwui/renderthread/RenderThread.cpp
@@ -27,6 +27,7 @@
 #include "pipeline/skia/SkiaOpenGLPipeline.h"
 #include "pipeline/skia/SkiaVulkanPipeline.h"
 #include "renderstate/RenderState.h"
+#include "utils/FatVector.h"
 #include "utils/TimeUtils.h"
 #include "utils/TraceUtils.h"
 
@@ -39,8 +40,6 @@
 #include <utils/Mutex.h>
 #include <thread>
 
-#include <ui/FatVector.h>
-
 namespace android {
 namespace uirenderer {
 namespace renderthread {
diff --git a/libs/hwui/renderthread/VulkanManager.cpp b/libs/hwui/renderthread/VulkanManager.cpp
index ba70afc8b8d2..a5355fc3499d 100644
--- a/libs/hwui/renderthread/VulkanManager.cpp
+++ b/libs/hwui/renderthread/VulkanManager.cpp
@@ -23,13 +23,13 @@
 #include <GrContext.h>
 #include <GrTypes.h>
 #include <android/sync.h>
-#include <ui/FatVector.h>
 #include <vk/GrVkExtensions.h>
 #include <vk/GrVkTypes.h>
 
 #include "Properties.h"
 #include "RenderThread.h"
 #include "renderstate/RenderState.h"
+#include "utils/FatVector.h"
 #include "utils/TraceUtils.h"
 
 namespace android {
diff --git a/libs/hwui/tests/unit/FatVectorTests.cpp b/libs/hwui/tests/unit/FatVectorTests.cpp
index 6585a6249b44..8523e6c9e973 100644
--- a/libs/hwui/tests/unit/FatVectorTests.cpp
+++ b/libs/hwui/tests/unit/FatVectorTests.cpp
@@ -15,7 +15,7 @@
  */
 
 #include <gtest/gtest.h>
-#include <ui/FatVector.h>
+#include <utils/FatVector.h>
 
 #include <tests/common/TestUtils.h>
 
diff --git a/libs/hwui/utils/FatVector.h b/libs/hwui/utils/FatVector.h
new file mode 100644
index 000000000000..49f1984b779f
--- /dev/null
+++ b/libs/hwui/utils/FatVector.h
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2015, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_FAT_VECTOR_H
+#define ANDROID_FAT_VECTOR_H
+
+#include "utils/Macros.h"
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <utils/Log.h>
+#include <type_traits>
+
+#include <vector>
+
+namespace android {
+namespace uirenderer {
+
+template <typename T, size_t SIZE>
+class InlineStdAllocator {
+public:
+    struct Allocation {
+        PREVENT_COPY_AND_ASSIGN(Allocation);
+
+    public:
+        Allocation(){};
+        // char array instead of T array, so memory is uninitialized, with no destructors run
+        char array[sizeof(T) * SIZE];
+        bool inUse = false;
+    };
+
+    typedef T value_type;  // needed to implement std::allocator
+    typedef T* pointer;    // needed to implement std::allocator
+
+    explicit InlineStdAllocator(Allocation& allocation) : mAllocation(allocation) {}
+    InlineStdAllocator(const InlineStdAllocator& other) : mAllocation(other.mAllocation) {}
+    ~InlineStdAllocator() {}
+
+    T* allocate(size_t num, const void* = 0) {
+        if (!mAllocation.inUse && num <= SIZE) {
+            mAllocation.inUse = true;
+            return (T*)mAllocation.array;
+        } else {
+            return (T*)malloc(num * sizeof(T));
+        }
+    }
+
+    void deallocate(pointer p, size_t num) {
+        if (p == (T*)mAllocation.array) {
+            mAllocation.inUse = false;
+        } else {
+            // 'free' instead of delete here - destruction handled separately
+            free(p);
+        }
+    }
+    Allocation& mAllocation;
+};
+
+/**
+ * std::vector with SIZE elements preallocated into an internal buffer.
+ *
+ * Useful for avoiding the cost of malloc in cases where only SIZE or
+ * fewer elements are needed in the common case.
+ */
+template <typename T, size_t SIZE>
+class FatVector : public std::vector<T, InlineStdAllocator<T, SIZE>> {
+public:
+    FatVector()
+            : std::vector<T, InlineStdAllocator<T, SIZE>>(
+                      InlineStdAllocator<T, SIZE>(mAllocation)) {
+        this->reserve(SIZE);
+    }
+
+    explicit FatVector(size_t capacity) : FatVector() { this->resize(capacity); }
+
+private:
+    typename InlineStdAllocator<T, SIZE>::Allocation mAllocation;
+};
+
+}  // namespace uirenderer
+}  // namespace android
+
+#endif  // ANDROID_FAT_VECTOR_H