OW_NAMESPACE::dlSharedLibrary Class Reference

dlSharedLibrary loads and queries shared libraries. More...

#include <OW_dlSharedLibrary.hpp>

Inheritance diagram for OW_NAMESPACE::dlSharedLibrary:

[legend]Collaboration diagram for OW_NAMESPACE::dlSharedLibrary:

[legend]List of all members.

Public Member Functions
	dlSharedLibrary (void *libhandle, const String &libName)
virtual	~dlSharedLibrary ()
Static Public Member Functions
static void	setCallDlclose (bool callDlclose)
	on some platforms (e.g.
static bool	isFakeLibrary (const String &library_path)
	Returns if the given path is a fake library or not.
Protected Member Functions
virtual bool	doGetFunctionPointer (const String &functionName, void **fp) const
	Derived classes have to override this function to implement the symbol loading.
Private Member Functions
	dlSharedLibrary (const dlSharedLibrary &)
dlSharedLibrary &	operator= (const dlSharedLibrary &)
Private Attributes
void *	m_libhandle
String	m_libName
Static Private Attributes
static bool	s_call_dlclose = true

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Detailed Description

dlSharedLibrary loads and queries shared libraries.

Using dlsym & friends.

Definition at line 57 of file OW_dlSharedLibrary.hpp.

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Constructor & Destructor Documentation

OW_NAMESPACE::dlSharedLibrary::dlSharedLibrary (  void *  libhandle, const String &  libName )

Definition at line 86 of file OW_dlSharedLibrary.cpp. References isFakeLibrary().

OW_NAMESPACE::dlSharedLibrary::~dlSharedLibrary (   )  [virtual]

Definition at line 100 of file OW_dlSharedLibrary.cpp. References m_libhandle, and s_call_dlclose.

OW_NAMESPACE::dlSharedLibrary::dlSharedLibrary (  const dlSharedLibrary &   )  [private]

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Member Function Documentation

bool OW_NAMESPACE::dlSharedLibrary::doGetFunctionPointer (  const String &  functionName, void **  fp )  const [protected, virtual]

Derived classes have to override this function to implement the symbol loading. The symbol to be looked up is contained in functionName, and the pointer to the function should be written into *fp. Return true if the function succeeded, false otherwise. Parameters: functionName  The name of the function to resolve. fp  Where to store the function pointer. Returns: true if function succeeded, false otherwise. Implements OW_NAMESPACE::SharedLibrary. Definition at line 109 of file OW_dlSharedLibrary.cpp. References OW_NAMESPACE::dlSharedLibrary_guard, and OW_NAMESPACE::Map< Key, T, Compare >::end().

bool OW_NAMESPACE::dlSharedLibrary::isFakeLibrary (  const String &  library_path  )  [static]

Returns if the given path is a fake library or not. Definition at line 138 of file OW_dlSharedLibrary.cpp. References OW_NAMESPACE::FileSystem::canRead(), OW_NAMESPACE::FileSystem::openFile(), and OW_NAMESPACE::File::read(). Referenced by dlSharedLibrary(), and OW_NAMESPACE::dlSharedLibraryLoader::loadSharedLibrary().

dlSharedLibrary& OW_NAMESPACE::dlSharedLibrary::operator= (  const dlSharedLibrary &   )  [private]

static void OW_NAMESPACE::dlSharedLibrary::setCallDlclose (  bool  callDlclose  )  [inline, static]

on some platforms (e.g. glibc 2.2.x), there are bugs in the dl* functions, and the workaround is to not call dlclose. Setting this variable to 0 will cause dlclose to never be called. Doing this has some problems: memory mapped to the shared library will never be freed up. New versions of the library can't be loaded (if a provider is updated) Definition at line 70 of file OW_dlSharedLibrary.hpp. References s_call_dlclose.

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Member Data Documentation

void* OW_NAMESPACE::dlSharedLibrary::m_libhandle [private]

Definition at line 93 of file OW_dlSharedLibrary.hpp. Referenced by ~dlSharedLibrary().

String OW_NAMESPACE::dlSharedLibrary::m_libName [private]

Definition at line 94 of file OW_dlSharedLibrary.hpp.

bool OW_NAMESPACE::dlSharedLibrary::s_call_dlclose = true [static, private]

Definition at line 107 of file OW_dlSharedLibrary.hpp. Referenced by setCallDlclose(), and ~dlSharedLibrary().

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The documentation for this class was generated from the following files:

• OW_dlSharedLibrary.hpp
• OW_dlSharedLibrary.cpp

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