| // 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 |
| |