60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
// Modifications copyright (C) 2017, Baidu.com, Inc.
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// Copyright 2017 The Apache Software Foundation
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// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#include "util/dynamic_util.h"
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#include <dlfcn.h>
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#include <sstream>
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namespace palo {
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Status dynamic_lookup(void* handle, const char* symbol, void** fn_ptr) {
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*(void**)(fn_ptr) = dlsym(handle, symbol);
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char* error = dlerror();
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if (error != NULL) {
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std::stringstream ss;
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ss << "Unable to find " << symbol << "\ndlerror: " << error;
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return Status(ss.str());
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}
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return Status::OK;
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}
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Status dynamic_open(const char* library, void** handle) {
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int flags = RTLD_NOW;
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*handle = dlopen(library, flags);
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if (*handle == NULL) {
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std::stringstream ss;
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ss << "Unable to load " << library << "\ndlerror: " << dlerror();
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return Status(ss.str());
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}
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return Status::OK;
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}
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void dynamic_close(void* handle) {
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dlclose(handle);
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}
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}
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