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/***
* Copyright (C) Microsoft. All rights reserved.
* Licensed under the MIT license. See LICENSE.txt file in the project root for full license information.
*
* =+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
*/
#ifdef WIN32
#include <Windows.h>
#else
#include "dlfcn.h"
#include <boost/filesystem.hpp>
#endif
#include "test_module_loader.h"
#include <iostream>
class test_module
{
public:
test_module(const std::string& dllName) : m_dllName(dllName), m_handle(nullptr) {}
GetTestsFunc get_test_list()
{
#if defined(_WIN32)
return (GetTestsFunc)GetProcAddress(m_handle, "GetTestList");
#else
auto ptr = dlsym(m_handle, "GetTestList");
if (ptr == nullptr)
{
std::cerr << "couldn't find GetTestList"
<<
#ifdef __APPLE__
" " << dlerror() <<
#endif
std::endl;
}
return (GetTestsFunc)ptr;
#endif
}
unsigned long load()
{
if (m_handle == nullptr)
{
#if defined(_WIN32)
// Make sure ends in .dll
if (*(m_dllName.end() - 1) != 'l' || *(m_dllName.end() - 2) != 'l' || *(m_dllName.end() - 3) != 'd' ||
*(m_dllName.end() - 4) != '.')
{
return (unsigned long)-1;
}
m_handle = LoadLibraryA(m_dllName.c_str());
if (m_handle == nullptr)
{
return GetLastError();
}
return 0;
#else
#ifdef __APPLE__
auto exe_directory = getcwd(nullptr, 0);
auto path = std::string(exe_directory) + "/" + m_dllName;
free(exe_directory);
#else
auto path = boost::filesystem::initial_path().string() + "/" + m_dllName;
#endif
m_handle = dlopen(path.c_str(), RTLD_LAZY | RTLD_GLOBAL);
if (m_handle == nullptr)
{
std::cerr << std::string(dlerror()) << std::endl;
return -1;
}
return 0;
#endif
}
return 0;
}
unsigned long unload()
{
if (m_handle != nullptr)
{
#if defined(_WIN32)
if (!FreeLibrary(m_handle))
{
return GetLastError();
}
m_handle = nullptr;
return 0;
#else
if (dlclose(m_handle) != 0)
{
std::cerr << std::string(dlerror()) << std::endl;
return -1;
}
m_handle = nullptr;
return 0;
#endif
}
return 0;
}
private:
const std::string m_dllName;
#if defined(_WIN32)
HMODULE m_handle;
#else
void* m_handle;
#endif
test_module(const test_module&) = delete;
test_module& operator=(const test_module&) = delete;
};
test_module_loader::test_module_loader() {}
test_module_loader::~test_module_loader()
{
for (auto iter = m_modules.begin(); iter != m_modules.end(); ++iter)
{
iter->second->unload();
delete iter->second;
}
}
unsigned long test_module_loader::load(const std::string& dllName)
{
// Check if the module is already loaded.
if (m_modules.find(dllName) != m_modules.end())
{
return 0;
}
test_module* pModule;
pModule = new test_module(dllName);
// Load dll.
const unsigned long error_code = pModule->load();
if (error_code != 0)
{
delete pModule;
return error_code;
}
else
{
m_modules[dllName] = pModule;
}
return 0;
}
UnitTest::TestList g_list;
UnitTest::TestList& test_module_loader::get_test_list(const std::string& dllName)
{
GetTestsFunc getTestsFunc = m_modules[dllName]->get_test_list();
// If there is no GetTestList function then it must be a dll without any tests.
// Simply return an empty TestList.
if (getTestsFunc == nullptr)
{
return g_list;
}
return getTestsFunc();
}
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