* Copyright (c) 2022 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef DISPLAY_MODULE_LOADER_H
#define DISPLAY_MODULE_LOADER_H
#include <dlfcn.h>
#include <memory>
#include <string>
#include <display_common.h>
namespace OHOS {
namespace HDI {
namespace DISPLAY {
class DisplayModuleLoader {
public:
static std::unique_ptr<DisplayModuleLoader> Create(const std::string &pathName)
{
void *handle = dlopen(pathName.c_str(), RTLD_NOW | RTLD_NOLOAD);
if (handle == nullptr) {
handle = dlopen(pathName.c_str(), RTLD_NOW);
if (handle == nullptr) {
return nullptr;
}
}
return std::make_unique<DisplayModuleLoader>(handle);
}
explicit DisplayModuleLoader(void *handle) : handle_(handle) {}
void *GetSymbol(const std::string &symbol)
{
return dlsym(handle_, symbol.c_str());
}
~DisplayModuleLoader()
{
if (handle_ != nullptr) {
dlclose(handle_);
handle_ = nullptr;
}
}
private:
void *handle_;
};
}
}
}
#endif
