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44 lines
885 B
C++
44 lines
885 B
C++
#include "SharedLibrary.h"
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#include <string>
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#include <boost/core/noncopyable.hpp>
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#include "Exception.h"
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int CANNOT_DLOPEN;
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extern const int CANNOT_DLSYM;
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}
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SharedLibrary::SharedLibrary(const std::string & path, int flags)
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{
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handle = dlopen(path.c_str(), flags);
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if (!handle)
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throw Exception(std::string("Cannot dlopen: ") + dlerror(), ErrorCodes::CANNOT_DLOPEN);
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}
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SharedLibrary::~SharedLibrary()
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{
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if (handle && dlclose(handle))
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std::terminate();
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}
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void * SharedLibrary::getImpl(const std::string & name, bool no_throw)
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{
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dlerror();
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auto res = dlsym(handle, name.c_str());
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if (char * error = dlerror())
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{
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if (no_throw)
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return nullptr;
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throw Exception(std::string("Cannot dlsym: ") + error, ErrorCodes::CANNOT_DLSYM);
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}
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return res;
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}
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}
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