| // 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. |
| |
| #include "util/dynamic-util.h" |
| |
| #include <dlfcn.h> |
| #include <sstream> |
| #include "util/test-info.h" |
| |
| #include "common/names.h" |
| |
| namespace impala { |
| |
| Status DynamicLookup(void* handle, const char* symbol, void** fn_ptr, bool quiet) { |
| *(void **) (fn_ptr) = dlsym(handle, symbol); |
| char* error = dlerror(); |
| if (error != NULL) { |
| stringstream ss; |
| ss << "Unable to find " << symbol << "\ndlerror: " << error; |
| return quiet ? Status::Expected(ss.str()) : Status(ss.str()); |
| } |
| return Status::OK(); |
| } |
| |
| Status DynamicOpen(const char* library, void** handle) { |
| int flags = RTLD_NOW; |
| // If we are loading shared libraries from the FE tests, where the Java |
| // side loads the initial impala binary (libfesupport.so), we are unable |
| // to load other libraries and have the symbols resolve. We'll load the |
| // secondary libraries with RTLD_LAZY, which means the symbols don't need |
| // to resolve at load time but will fail at dlsym(). This is generally |
| // undesirable (we want to fail early) and also not the best solution. This |
| // will prevent the FE tests from running the functions that cannot resolve |
| // the symbols (e.g. planner tests with some UDFs). |
| // TODO: this is to work around some build breaks. We need to fix this better. |
| if (TestInfo::is_fe_test()) flags = RTLD_LAZY; |
| *handle = dlopen(library, flags); |
| if (*handle == NULL) { |
| stringstream ss; |
| ss << "Unable to load " << library << "\ndlerror: " << dlerror(); |
| return Status(ss.str()); |
| } |
| return Status::OK(); |
| } |
| |
| void DynamicClose(void* handle) { |
| dlclose(handle); |
| } |
| |
| } |