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// license:GPL-2.0+
// copyright-holders:Couriersud
#ifndef PDYNLIB_H_
#define PDYNLIB_H_
///
/// \file pdynlib.h
///
#include "pstring.h"
#include "ptypes.h"
namespace plib {
// ----------------------------------------------------------------------------------------
// pdynlib: dynamic loading of libraries ...
// ----------------------------------------------------------------------------------------
class dynlib : public nocopyassignmove
{
public:
explicit dynlib(const pstring &libname);
dynlib(const pstring &path, const pstring &libname);
~dynlib();
COPYASSIGNMOVE(dynlib, delete)
bool isLoaded() const { return m_isLoaded; }
template <typename T>
T getsym(const pstring &name) const noexcept
{
return reinterpret_cast<T>(getsym_p(name));
}
private:
void *getsym_p(const pstring &name) const noexcept;
bool m_isLoaded;
void *m_lib;
};
template <typename R, typename... Args>
class dynproc
{
public:
using calltype = R(*) (Args... args);
dynproc() : m_sym(nullptr) { }
dynproc(dynlib &dl, const pstring &name) noexcept
{
m_sym = dl.getsym<calltype>(name);
}
void load(dynlib &dl, const pstring &name) noexcept
{
m_sym = dl.getsym<calltype>(name);
}
R operator ()(Args&&... args) const
{
return m_sym(std::forward<Args>(args)...);
//return m_sym(args...);
}
bool resolved() const noexcept { return m_sym != nullptr; }
private:
calltype m_sym;
};
} // namespace plib
#endif // PSTRING_H_
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