diff options
-rw-r--r-- | src/backends/backendsCommon/CMakeLists.txt | 2 | ||||
-rw-r--r-- | src/backends/backendsCommon/DynamicBackendUtils.cpp | 48 | ||||
-rw-r--r-- | src/backends/backendsCommon/DynamicBackendUtils.hpp | 56 |
3 files changed, 106 insertions, 0 deletions
diff --git a/src/backends/backendsCommon/CMakeLists.txt b/src/backends/backendsCommon/CMakeLists.txt index bc1c15beef..bb31ce3813 100644 --- a/src/backends/backendsCommon/CMakeLists.txt +++ b/src/backends/backendsCommon/CMakeLists.txt @@ -9,6 +9,8 @@ list(APPEND armnnBackendsCommon_sources CpuTensorHandle.cpp CpuTensorHandleFwd.hpp CpuTensorHandle.hpp + DynamicBackendUtils.cpp + DynamicBackendUtils.hpp IBackendInternal.hpp IBackendContext.hpp ITensorHandleFactory.cpp diff --git a/src/backends/backendsCommon/DynamicBackendUtils.cpp b/src/backends/backendsCommon/DynamicBackendUtils.cpp new file mode 100644 index 0000000000..f5ee12cbfd --- /dev/null +++ b/src/backends/backendsCommon/DynamicBackendUtils.cpp @@ -0,0 +1,48 @@ +// +// Copyright © 2017 Arm Ltd. All rights reserved. +// SPDX-License-Identifier: MIT +// + +#include "DynamicBackendUtils.hpp" + +namespace armnn +{ + +void* DynamicBackendUtils::OpenHandle(const std::string& sharedObjectPath) +{ + if (sharedObjectPath.empty()) + { + throw RuntimeException("OpenHandle error: shared object path must not be empty"); + } + + void* sharedObjectHandle = dlopen(sharedObjectPath.c_str(), RTLD_LAZY | RTLD_GLOBAL); + if (!sharedObjectHandle) + { + throw RuntimeException(boost::str(boost::format("OpenHandle error: %1") % GetDlError())); + } + + return sharedObjectHandle; +} + +void DynamicBackendUtils::CloseHandle(const void* sharedObjectHandle) +{ + if (!sharedObjectHandle) + { + return; + } + + dlclose(const_cast<void*>(sharedObjectHandle)); +} + +std::string DynamicBackendUtils::GetDlError() +{ + const char* errorMessage = dlerror(); + if (!errorMessage) + { + return ""; + } + + return std::string(errorMessage); +} + +} // namespace armnn diff --git a/src/backends/backendsCommon/DynamicBackendUtils.hpp b/src/backends/backendsCommon/DynamicBackendUtils.hpp new file mode 100644 index 0000000000..6bedec4580 --- /dev/null +++ b/src/backends/backendsCommon/DynamicBackendUtils.hpp @@ -0,0 +1,56 @@ +// +// Copyright © 2017 Arm Ltd. All rights reserved. +// SPDX-License-Identifier: MIT +// + +#pragma once + +#include <armnn/Exceptions.hpp> + +#include <string> +#include <dlfcn.h> + +#include <boost/format.hpp> + +namespace armnn +{ + +class DynamicBackendUtils +{ +public: + static void* OpenHandle(const std::string& sharedObjectPath); + static void CloseHandle(const void* sharedObjectHandle); + + template<typename EntryPointType> + static EntryPointType GetEntryPoint(const void* sharedObjectHandle, const char* symbolName); + +private: + static std::string GetDlError(); + + /// This class is to hold utility functions only + DynamicBackendUtils() = delete; +}; + +template<typename EntryPointType> +EntryPointType DynamicBackendUtils::GetEntryPoint(const void* sharedObjectHandle, const char* symbolName) +{ + if (sharedObjectHandle == nullptr) + { + throw RuntimeException("GetEntryPoint error: invalid handle"); + } + + if (symbolName == nullptr) + { + throw RuntimeException("GetEntryPoint error: invalid symbol"); + } + + auto entryPoint = reinterpret_cast<EntryPointType>(dlsym(const_cast<void*>(sharedObjectHandle), symbolName)); + if (!entryPoint) + { + throw RuntimeException(boost::str(boost::format("GetEntryPoint error: %1") % GetDlError())); + } + + return entryPoint; +} + +} // namespace armnn |