// Licensed to the Apache Software Foundation (ASF) under one

// or more contributor license agreements.  See the NOTICE file

// distributed with this work for additional information

// regarding copyright ownership.  The ASF licenses this file

// to you 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.

// This file is copied from

// https://github.com/apache/impala/blob/branch-2.9.0/be/src/util/dynamic-util.cc

// and modified by Doris

#include "util/dynamic_util.h"

#include <dlfcn.h>

namespace doris {

Status dynamic_lookup(void* handle, const char* symbol, void** fn_ptr) {

    *(void**)(fn_ptr) = dlsym(handle, symbol);

    char* error = dlerror();

    if (error != nullptr) {

        return Status::InternalError("Unable to find {}\ndlerror: {}", symbol, error);

    }

    return Status::OK();

}

Status dynamic_open(const char* library, void** handle) {

    int flags = RTLD_NOW;

    *handle = dlopen(library, flags);

    if (*handle == nullptr) {

        return Status::InternalError("Unable to load {}\ndlerror: {}", library, dlerror());

    }

    return Status::OK();

}

void dynamic_close(void* handle) {

// There is an issue of LSAN can't deal well with dlclose(), so we disable LSAN here, more details:

// https://github.com/google/sanitizers/issues/89

#if !defined(ADDRESS_SANITIZER) && !defined(LEAK_SANITIZER)

    dlclose(handle);

#endif

}

} // namespace doris