dart::common::SharedLibrary Class Reference

SharedLibrary is a RAII object wrapping a shared library. More...

#include <SharedLibrary.hpp>

Public Member Functions
	SharedLibrary (ProtectedConstructionTag, const boost::filesystem::path &path)
	Constructs from a path to the shared library. More...
virtual	~SharedLibrary ()
	Destructor. More...
const boost::filesystem::path &	getCanonicalPath () const
	Returns the path to the shared library file. More...
bool	isValid () const
	Returns true if the shared library loading was successful. More...
void *	getSymbol (const std::string &symbolName) const
	Returns a symbol from the shared library if it exists. More...

Static Public Member Functions
static std::shared_ptr< SharedLibrary >	create (const boost::filesystem::path &path)
	Creates a SharedLibrary from a path to the shared library. More...

Protected Types
enum	ProtectedConstructionTag { ProtectedConstruction }

Protected Attributes
boost::filesystem::path	mCanonicalPath
	Canonical path to the shared library where a canonical path is an absolute path that has no elements which are symbolic links, and no dot or dot dot elements such as "/path/../to/yourfile". More...
DYNLIB_HANDLE	mInstance
	Handle to the loaded library. More...

Private Member Functions
std::string	getLastError () const
	Returns the last loading error. More...

Friends
class	detail::SharedLibraryManager

Detailed Description

SharedLibrary is a RAII object wrapping a shared library.

Member Enumeration Documentation

ProtectedConstructionTag

enum dart::common::SharedLibrary::ProtectedConstructionTag

protected

Enumerator
ProtectedConstruction

Constructor & Destructor Documentation

SharedLibrary()

dart::common::SharedLibrary::SharedLibrary ( ProtectedConstructionTag  , const boost::filesystem::path &  path  )

explicit

Constructs from a path to the shared library.

This constructor is only called by detail::SharedLibraryManager. ProtectedConstructionTag is necessary to enforce creating SharedLibrary using std::make_shared.

Note

Please use create() to contruct SharedLibrary instead of this constructor.

Parameters

[in]

path

The canonical path to the shared library.

Returns

Pointer to the created SharedLibrary upon success in loading. Otherwise, returns nullptr.

~SharedLibrary()

dart::common::SharedLibrary::~SharedLibrary ( )

virtual

Destructor.

Member Function Documentation

create()

std::shared_ptr< SharedLibrary > dart::common::SharedLibrary::create ( const boost::filesystem::path &  path )

static

Creates a SharedLibrary from a path to the shared library.

Note

SharedLibrary should be always created from this create function.

Parameters

[in]

path

The path to the shared library. The path can be a relative path or an absolute path. If the path doens't exist this function returns nullptr. If the path exist, the path will be stored as the canonical path where a canonical path is an absolute path that has no elements which are symbolic links, and no dot or dot dot elements such as "/path/../to/yourfile".

Returns

Pointer to the created SharedLibrary upon success in loading. Otherwise, returns nullptr.

getCanonicalPath()

const boost::filesystem::path & dart::common::SharedLibrary::getCanonicalPath

(

)

const

Returns the path to the shared library file.

getLastError()

std::string dart::common::SharedLibrary::getLastError ( ) const

private

Returns the last loading error.

getSymbol()

void * dart::common::SharedLibrary::getSymbol

(

const std::string &

symbolName

)

const

Returns a symbol from the shared library if it exists.

Return nullptr otherwise.

You have to reinterpret_cast the return value to the appropriate type to make use of the void* returned by this function.

isValid()

bool dart::common::SharedLibrary::isValid

(

)

const

Returns true if the shared library loading was successful.

Friends And Related Function Documentation

detail::SharedLibraryManager

friend class detail::SharedLibraryManager

friend

Member Data Documentation

mCanonicalPath

boost::filesystem::path dart::common::SharedLibrary::mCanonicalPath

protected

Canonical path to the shared library where a canonical path is an absolute path that has no elements which are symbolic links, and no dot or dot dot elements such as "/path/../to/yourfile".

mInstance

DYNLIB_HANDLE dart::common::SharedLibrary::mInstance

protected

Handle to the loaded library.