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/*
* Copyright (C) 2017 The Android Open Source Project
*
* 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.
*/
#include "SharedLibrary.h"
#include <dlfcn.h>
namespace android {
namespace hardware {
namespace drm {
namespace V1_0 {
namespace helper {
SharedLibrary::SharedLibrary(const String8& path) {
mLibHandle = dlopen(path.string(), RTLD_NOW);
}
SharedLibrary::~SharedLibrary() {
if (mLibHandle != NULL) {
dlclose(mLibHandle);
mLibHandle = NULL;
}
}
bool SharedLibrary::operator!() const {
return mLibHandle == NULL;
}
void* SharedLibrary::lookup(const char* symbol) const {
if (!mLibHandle) {
return NULL;
}
// Clear last error before we load the symbol again,
// in case the caller didn't retrieve it.
(void)dlerror();
return dlsym(mLibHandle, symbol);
}
const char* SharedLibrary::lastError() const {
const char* error = dlerror();
return error ? error : "No errors or unknown error";
}
}
}
}
}
} // namespace android
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