IVGCVSW-6310 Update ICustomAllocator and add GetDefaultAllocator function to backends

Signed-off-by: Francis Murtagh <francis.murtagh@arm.com>
Change-Id: If2879e8a82692285e7fa3f4d09abd608ca28de12

3 files changed, 130 insertions, 5 deletions

diff --git a/src/backends/cl/test/CMakeLists.txt b/src/backends/cl/test/CMakeLists.txt
index 41cbe24c15..8ee532a323 100644
--- a/src/backends/cl/test/CMakeLists.txt
+++ b/src/backends/cl/test/CMakeLists.txt
@@ -17,6 +17,7 @@ list(APPEND armnnClBackendUnitTests_sources
     ClOptimizedNetworkTests.cpp
     ClRuntimeTests.cpp
     ClWorkloadFactoryHelper.hpp
+    DefaultAllocatorTests.cpp
     Fp16SupportTest.cpp
     OpenClTimerTest.cpp
 )
diff --git a/src/backends/cl/test/ClCustomAllocatorTests.cpp b/src/backends/cl/test/ClCustomAllocatorTests.cpp
index e614f4c624..60145139ff 100644
--- a/src/backends/cl/test/ClCustomAllocatorTests.cpp
+++ b/src/backends/cl/test/ClCustomAllocatorTests.cpp
@@ -10,13 +10,13 @@
 #include <armnn/IRuntime.hpp>
 #include <armnn/Utils.hpp>
 #include <armnn/BackendRegistry.hpp>
+
 #include <cl/ClBackend.hpp>
 #if defined(ARMCOMPUTENEON_ENABLED)
 #include <neon/NeonBackend.hpp>
 #endif
-
 #include <doctest/doctest.h>
-
+#include <armnn/utility/IgnoreUnused.hpp>
 // Contains the OpenCl interfaces for mapping memory in the Gpu Page Tables
 // Requires the OpenCl backend to be included (GpuAcc)
 #include <arm_compute/core/CL/CLKernelLibrary.h>
@@ -31,7 +31,7 @@ class SampleClBackendCustomAllocator : public armnn::ICustomAllocator
 public:
     SampleClBackendCustomAllocator() = default;
 
-    void* allocate(size_t size, size_t alignment)
+    void* allocate(size_t size, size_t alignment) override
     {
         // If alignment is 0 just use the CL_DEVICE_GLOBAL_MEM_CACHELINE_SIZE for alignment
         if (alignment == 0)
@@ -49,12 +49,12 @@ public:
     }
 
     /** Interface to be implemented by the child class to free the allocated tensor */
-    void free(void* ptr)
+    void free(void* ptr) override
     {
         std::free(ptr);
     }
 
-    armnn::MemorySource GetMemorySourceType()
+    armnn::MemorySource GetMemorySourceType() override
     {
         return armnn::MemorySource::Malloc;
     }
diff --git a/src/backends/cl/test/DefaultAllocatorTests.cpp b/src/backends/cl/test/DefaultAllocatorTests.cpp
new file mode 100644
index 0000000000..196c0fb412
--- /dev/null
+++ b/src/backends/cl/test/DefaultAllocatorTests.cpp
@@ -0,0 +1,124 @@
+//
+// Copyright © 2021 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include <armnn/backends/ICustomAllocator.hpp>
+#include <armnn/Descriptors.hpp>
+#include <armnn/Exceptions.hpp>
+#include <armnn/IRuntime.hpp>
+#include <backendsCommon/TensorHandle.hpp>
+// Requires the OpenCl backend to be included (GpuAcc)
+#include <cl/ClBackend.hpp>
+#include <doctest/doctest.h>
+#include <backendsCommon/DefaultAllocator.hpp>
+#include <backendsCommon/test/MockBackend.hpp>
+
+using namespace armnn;
+
+
+namespace
+{
+
+TEST_SUITE("DefaultAllocatorTests")
+{
+
+TEST_CASE("DefaultAllocatorTest")
+{
+    float number = 3;
+
+    TensorInfo inputTensorInfo(TensorShape({1, 1}), DataType::Float32);
+
+    // Create ArmNN runtime
+    IRuntime::CreationOptions options; // default options
+    auto customAllocator = std::make_shared<DefaultAllocator>();
+    options.m_CustomAllocatorMap = {{"GpuAcc", std::move(customAllocator)}};
+    IRuntimePtr run = IRuntime::Create(options);
+
+    // Creates structures for input & output
+    unsigned int numElements = inputTensorInfo.GetNumElements();
+    size_t totalBytes = numElements * sizeof(float);
+
+    void* alignedInputPtr = options.m_CustomAllocatorMap["GpuAcc"]->allocate(totalBytes, 0);
+
+    auto* inputPtr = reinterpret_cast<float*>(alignedInputPtr);
+    std::fill_n(inputPtr, numElements, number);
+    CHECK(inputPtr[0] == 3);
+
+    auto& backendRegistry = armnn::BackendRegistryInstance();
+    backendRegistry.DeregisterAllocator(ClBackend::GetIdStatic());
+}
+
+TEST_CASE("DefaultAllocatorTestMulti")
+{
+    float number = 3;
+
+    TensorInfo inputTensorInfo(TensorShape({2, 1}), DataType::Float32);
+
+    // Create ArmNN runtime
+    IRuntime::CreationOptions options; // default options
+    auto customAllocator = std::make_shared<DefaultAllocator>();
+    options.m_CustomAllocatorMap = {{"GpuAcc", std::move(customAllocator)}};
+    IRuntimePtr run = IRuntime::Create(options);
+
+    // Creates structures for input & output
+    unsigned int numElements = inputTensorInfo.GetNumElements();
+    size_t totalBytes = numElements * sizeof(float);
+
+    void* alignedInputPtr = options.m_CustomAllocatorMap["GpuAcc"]->allocate(totalBytes, 0);
+    void* alignedInputPtr2 = options.m_CustomAllocatorMap["GpuAcc"]->allocate(totalBytes, 0);
+
+    auto* inputPtr = reinterpret_cast<float*>(alignedInputPtr);
+    std::fill_n(inputPtr, numElements, number);
+    CHECK(inputPtr[0] == 3);
+    CHECK(inputPtr[1] == 3);
+
+    auto* inputPtr2 = reinterpret_cast<float*>(alignedInputPtr2);
+    std::fill_n(inputPtr2, numElements, number);
+    CHECK(inputPtr2[0] == 3);
+    CHECK(inputPtr2[1] == 3);
+
+    // No overlap
+    CHECK(inputPtr[0] == 3);
+    CHECK(inputPtr[1] == 3);
+
+    auto& backendRegistry = armnn::BackendRegistryInstance();
+    backendRegistry.DeregisterAllocator(ClBackend::GetIdStatic());
+}
+
+TEST_CASE("DefaultAllocatorTestMock")
+{
+    // Create ArmNN runtime
+    IRuntime::CreationOptions options; // default options
+    IRuntimePtr run = IRuntime::Create(options);
+
+    // Initialize Mock Backend
+    MockBackendInitialiser initialiser;
+    auto factoryFun = BackendRegistryInstance().GetFactory(MockBackend().GetIdStatic());
+    ARMNN_ASSERT(factoryFun != nullptr);
+    auto backend = factoryFun();
+    auto defaultAllocator = backend->GetDefaultAllocator();
+
+    // GetMemorySourceType
+    CHECK(defaultAllocator->GetMemorySourceType() == MemorySource::Malloc);
+
+    size_t totalBytes = 1 * sizeof(float);
+    // Allocate
+    void* ptr = defaultAllocator->allocate(totalBytes, 0);
+
+    // GetMemoryRegionAtOffset
+    CHECK(defaultAllocator->GetMemoryRegionAtOffset(ptr, 0, 0));
+
+    // Free
+    defaultAllocator->free(ptr);
+
+    // Clean up
+    auto& backendRegistry = armnn::BackendRegistryInstance();
+    backendRegistry.Deregister(MockBackend().GetIdStatic());
+    backendRegistry.DeregisterAllocator(ClBackend::GetIdStatic());
+}
+
+
+}
+
+} // namespace armnn
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