/usr/include/cppdb/shared_object.h is in libcppdb-dev 0.3.1+dfsg-3build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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//
// Copyright (C) 2010-2011 Artyom Beilis (Tonkikh) <artyomtnk@yahoo.com>
//
// Distributed under:
//
// the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// or (at your opinion) under:
//
// The MIT License
// (See accompanying file MIT.txt or a copy at
// http://www.opensource.org/licenses/mit-license.php)
//
///////////////////////////////////////////////////////////////////////////////
#ifndef CPPDB_SHARED_OBJECT_H
#define CPPDB_SHARED_OBJECT_H
#include <cppdb/defs.h>
#include <cppdb/ref_ptr.h>
namespace cppdb {
///
/// \brief This class allows to load and unload shared objects in simple and exception safe way.
///
class CPPDB_API shared_object : public ref_counted {
shared_object() : handle_(0) {}
shared_object(std::string name,void *h);
shared_object(shared_object const &);
void operator=(shared_object const &);
public:
~shared_object();
///
/// Load shared object, returns empty pointer if the object does not exits or not loadable
///
static ref_ptr<shared_object> open(std::string const &name);
///
/// Resolve symbol \a name and return pointer on it, throws cppdb_error if the symbol can't be resolved
///
void *safe_sym(std::string const &name);
///
/// Resolve symbol \a name and return pointer on it, returns NULL if the symbol can't be resolved
///
void *sym(std::string const &name);
///
/// Resolve symbol \a name and assign it to \a v, returns false if the symbol can't be resolved
///
template<typename T>
bool resolve(std::string const &s,T *&v)
{
void *p=sym(s);
if(!p) {
return false;
}
v=(T*)(p);
return true;
}
///
/// Resolve symbol \a name and assign it to v, throws cppdb_error if the symbol can't be resolved
///
template<typename T>
void safe_resolve(std::string const &s,T *&v)
{
v=(T*)(sym(s));
}
private:
std::string dlname_;
void *handle_;
};
}
#endif
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