diff options
Diffstat (limited to 'src/backends')
-rw-r--r-- | src/backends/backendsCommon/test/BackendRegistryTests.cpp | 44 | ||||
-rw-r--r-- | src/backends/neon/NeonRegistryInitializer.cpp | 12 |
2 files changed, 55 insertions, 1 deletions
diff --git a/src/backends/backendsCommon/test/BackendRegistryTests.cpp b/src/backends/backendsCommon/test/BackendRegistryTests.cpp index 213d114248..ce8acbbf2a 100644 --- a/src/backends/backendsCommon/test/BackendRegistryTests.cpp +++ b/src/backends/backendsCommon/test/BackendRegistryTests.cpp @@ -7,6 +7,7 @@ #include <armnn/BackendRegistry.hpp> #include <armnn/backends/IBackendInternal.hpp> +#include <reference/RefBackend.hpp> #include <boost/test/unit_test.hpp> @@ -103,4 +104,47 @@ BOOST_AUTO_TEST_CASE(TestDirectCallToRegistry) BackendRegistryInstance().Deregister("HelloWorld"); } +// Test that backends can throw exceptions during their factory function to prevent loading in an unsuitable +// environment. For example Neon Backend loading on armhf device without neon support. +// In reality the dynamic backend is loaded in during the LoadDynamicBackends(options.m_DynamicBackendsPath) +// step of runtime constructor, then the factory function is called to check if supported, in case +// of Neon not being detected the exception is raised and so the backend is not added to the supportedBackends +// list + +BOOST_AUTO_TEST_CASE(ThrowBackendUnavailableException) +{ + using namespace armnn; + + const BackendId mockBackendId("MockDynamicBackend"); + + const std::string exceptionMessage("Neon support not found on device, could not register CpuAcc Backend.\n"); + + // Register the mock backend with a factory function lambda equivalent to NeonRegisterInitializer + BackendRegistryInstance().Register(mockBackendId, + [exceptionMessage]() + { + if (false) + { + return IBackendInternalUniquePtr(new RefBackend); + } + ARMNN_LOG(info) << "Neon support not found on device, could not register CpuAcc Backend."; + throw armnn::BackendUnavailableException(exceptionMessage); + }); + + // Get the factory function of the mock backend + auto factoryFunc = BackendRegistryInstance().GetFactory(mockBackendId); + + try + { + // Call the factory function as done during runtime backend registering + auto backend = factoryFunc(); + } + catch (const BackendUnavailableException& e) + { + // Caught + BOOST_CHECK_EQUAL(e.what(), exceptionMessage); + BOOST_TEST_MESSAGE("ThrowBackendUnavailableExceptionImpl: BackendUnavailableException caught."); + } +} + BOOST_AUTO_TEST_SUITE_END() diff --git a/src/backends/neon/NeonRegistryInitializer.cpp b/src/backends/neon/NeonRegistryInitializer.cpp index fd2e84dd5f..fc981ab270 100644 --- a/src/backends/neon/NeonRegistryInitializer.cpp +++ b/src/backends/neon/NeonRegistryInitializer.cpp @@ -6,6 +6,7 @@ #include "NeonBackend.hpp" #include <armnn/BackendRegistry.hpp> +#include <armnn/Utils.hpp> namespace { @@ -18,7 +19,16 @@ static BackendRegistry::StaticRegistryInitializer g_RegisterHelper NeonBackend::GetIdStatic(), []() { - return IBackendInternalUniquePtr(new NeonBackend); + // Check if device supports Neon. + if (NeonDetected()) + { + return IBackendInternalUniquePtr(new NeonBackend); + } + + // If device does not support Neon throw exception so the Backend is not added to supportedBackends + ARMNN_LOG(info) << "Neon support not found on device, could not register CpuAcc Backend."; + throw armnn::BackendUnavailableException( + "Neon support not found on device, could not register CpuAcc Backend.\n"); } }; |