// 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.

#ifndef IMPALA_UTIL_DYNAMIC_UTIL_H
#define IMPALA_UTIL_DYNAMIC_UTIL_H

#include "common/status.h"

namespace impala {

/// Look up symbols in a dynamically linked library.
/// handle -- handle to the library. NULL if loading from the current process.
/// symbol -- symbol to lookup.
/// fn_ptr -- pointer tor retun addres of function.
/// quiet -- silence the error
Status DynamicLookup(void* handle, const char* symbol, void** fn_ptr, bool quiet=false);

/// Open a dynamicly loaded library.
/// library -- name of the library.  The default paths will be searched.
///            library can be NULL to get the handle for the current process.
/// handle -- returned handle to the library.
Status DynamicOpen(const char* library, void** handle);

/// Closes the handle.
void DynamicClose(void* handle);

}

#endif