shared_library_WIN.cpp

Go to the documentation of this file.

#include <string>
#include <mutex>
#include <Windows.h>
#include "behaviortree_cpp_v3/utils/shared_library.h"
#include "behaviortree_cpp_v3/exceptions.h"

namespace BT
{
SharedLibrary::SharedLibrary()
{
    _handle = nullptr;
}

void SharedLibrary::load(const std::string& path, int)
{
    std::unique_lock<std::mutex> lock(_mutex);

    _handle = LoadLibrary(path.c_str());
    if (!_handle)
    {
        throw RuntimeError("Could not load library: " + path);
    }
    _path = path;
}

void SharedLibrary::unload()
{
    std::unique_lock<std::mutex> lock(_mutex);

    if (_handle)
    {
        FreeLibrary((HMODULE)_handle);
        _handle = 0;
    }
    _path.clear();
}

bool SharedLibrary::isLoaded() const
{
    return _handle != nullptr;
}

void* SharedLibrary::findSymbol(const std::string& name)
{
    std::unique_lock<std::mutex> lock(_mutex);

    if (_handle)
    {
#if defined(_WIN32_WCE)
        std::wstring uname;
        UnicodeConverter::toUTF16(name, uname);
        return (void*)GetProcAddressW((HMODULE)_handle, uname.c_str());
#else
        return (void*)GetProcAddress((HMODULE)_handle, name.c_str());
#endif
    }

    return 0;
}

const std::string& SharedLibrary::getPath() const
{
    return _path;
}

std::string SharedLibrary::prefix()
{
    return "";
}

std::string SharedLibrary::suffix()
{
#if defined(_DEBUG)
    return "d.dll";
#else
    return ".dll";
#endif
}

}   // namespace BT