core::DynamicLoader Class Reference

#include <DynamicLoader.h>

Collaboration diagram for core::DynamicLoader:

Classes
struct	Library

Public Member Functions
	DynamicLoader ()=delete
	~DynamicLoader ()=delete

Static Public Member Functions
static void *	dlRegisterHandle (void *handle, const std::string &libFile)
static void	dlCloseDelayed (void *handle)
static int	dlClose (void *handle)
static void *	dlSym (void *handle, const std::string &symbol)
static char *	dlError ()

Static Private Member Functions
static int	dlClose (const Library &library)
static int	realExecDlClose (const Library &library)
static void	execDlCloseDeleyed ()
static void	execDlCloseAll ()

Static Private Attributes
static std::map< void *, Library >	dlOpenedLibraries
static std::list< void * >	closeHandles

Friends
class	EventLoop
class	EventMultiplexer

Detailed Description

Definition at line 57 of file DynamicLoader.h.

Constructor & Destructor Documentation

DynamicLoader()

core::DynamicLoader::DynamicLoader ( )

delete

~DynamicLoader()

core::DynamicLoader::~DynamicLoader ( )

delete

Member Function Documentation

dlClose() [1/2]

int core::DynamicLoader::dlClose ( const Library &  library )

staticprivate

Definition at line 119 of file DynamicLoader.cpp.

                                                     {
        int ret = 0;
        ret = realExecDlClose(library);
 
        if (ret != 0) {
            LOG(TRACE) << "  dlClose: " << DynamicLoader::dlError();
        } else {
            LOG(TRACE) << "  dlClose: " << library.fileName << ": success";
        }
 
        return ret;
    }

References dlError(), core::DynamicLoader::Library::fileName, and realExecDlClose().

Referenced by dlClose(), execDlCloseAll(), and execDlCloseDeleyed().

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dlClose() [2/2]

int core::DynamicLoader::dlClose ( void *  handle )

static

Definition at line 89 of file DynamicLoader.cpp.

                                           {
        int ret = 0;
 
        if (handle != nullptr) {
            if (dlOpenedLibraries.contains(handle)) {
                ret = dlClose(dlOpenedLibraries[handle]);
 
                dlOpenedLibraries.erase(handle);
            } else {
                LOG(TRACE) << "DynLoader: dlCloseDelayed: " << handle << ": not opened using dlOpen";
            }
        } else {
            LOG(TRACE) << "DynLoader: dlClose handle: nullptr";
        }
 
        return ret;
    }

References dlClose(), and dlOpenedLibraries.

Referenced by web::websocket::SubProtocolFactorySelector< web::websocket::SubProtocolFactory< web::websocket::client::SubProtocol > >::load().

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dlCloseDelayed()

void core::DynamicLoader::dlCloseDelayed ( void *  handle )

static

Definition at line 71 of file DynamicLoader.cpp.

                                                   {
        if (handle != nullptr) {
            if (dlOpenedLibraries.contains(handle)) {
                if (std::find(closeHandles.begin(), closeHandles.end(), handle) == closeHandles.end()) {
                    LOG(TRACE) << "DynLoader: dlCloseDelayed: " << dlOpenedLibraries[handle].fileName;
 
                    closeHandles.push_back(handle);
                } else {
                    LOG(TRACE) << "DynLoader: dlCloseDelayed: " << dlOpenedLibraries[handle].fileName << ": already registered: ";
                }
            } else {
                LOG(TRACE) << "DynLoader: dlCloseDelayed: " << handle << ": not opened using dlOpen";
            }
        } else {
            LOG(TRACE) << "DynLoader: dlCloseDelayed: handle is nullptr";
        }
    }

References closeHandles, dlOpenedLibraries, and core::DynamicLoader::Library::fileName.

Referenced by web::http::SocketContextUpgradeFactorySelector< SocketContextUpgradeFactoryT >::unload(), and web::websocket::SubProtocolFactorySelector< SubProtocolFactoryT >::unload().

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dlError()

char * core::DynamicLoader::dlError ( )

static

Definition at line 111 of file DynamicLoader.cpp.

                                 {
        return core::system::dlerror();
    }

References core::system::dlerror().

Referenced by dlClose(), and dlRegisterHandle().

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dlRegisterHandle()

void * core::DynamicLoader::dlRegisterHandle ( void *  handle, const std::string &  libFile  )

static

Definition at line 57 of file DynamicLoader.cpp.

                                                                                {
        if (handle != nullptr) {
            if (!dlOpenedLibraries.contains(handle)) {
                dlOpenedLibraries[handle].fileName = libFile;
                dlOpenedLibraries[handle].handle = handle;
            }
            LOG(TRACE) << "DynLoader: dlOpen: " << libFile << ": success";
        } else {
            LOG(TRACE) << "DynLoader: dlOpen: " << DynamicLoader::dlError();
        }
 
        return handle;
    }

References dlError(), dlOpenedLibraries, core::DynamicLoader::Library::fileName, and core::DynamicLoader::Library::handle.

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dlSym()

void * core::DynamicLoader::dlSym ( void *  handle, const std::string &  symbol  )

static

Definition at line 107 of file DynamicLoader.cpp.

                                                                    {
        return core::system::dlsym(handle, symbol.c_str());
    }

References core::system::dlsym().

Referenced by web::websocket::SubProtocolFactorySelector< SubProtocolFactoryT >::load().

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execDlCloseAll()

void core::DynamicLoader::execDlCloseAll ( )

staticprivate

Definition at line 147 of file DynamicLoader.cpp.

                                       {
        LOG(TRACE) << "DynLoader: execDlCloseAll";
 
        for (auto& [handle, library] : dlOpenedLibraries) {
            dlClose(library);
        }
 
        dlOpenedLibraries.clear();
        closeHandles.clear();
 
        LOG(TRACE) << "DynLoader: execDlCloseAll done";
    }

References closeHandles, dlClose(), and dlOpenedLibraries.

Referenced by core::EventLoop::free().

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execDlCloseDeleyed()

void core::DynamicLoader::execDlCloseDeleyed ( )

staticprivate

Definition at line 132 of file DynamicLoader.cpp.

                                           {
        if (!closeHandles.empty()) {
            LOG(TRACE) << "DynLoader: execDlCloseDeleyed";
 
            for (void* handle : closeHandles) {
                dlClose(dlOpenedLibraries[handle]);
                dlOpenedLibraries.erase(handle);
            }
 
            closeHandles.clear();
 
            LOG(TRACE) << "DynLoader: execDlCloseDeleyed done";
        }
    }

References closeHandles, dlClose(), and dlOpenedLibraries.

Referenced by core::EventMultiplexer::releaseExpiredResources().

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realExecDlClose()

int core::DynamicLoader::realExecDlClose ( const Library &  library )

staticprivate

Definition at line 115 of file DynamicLoader.cpp.

                                                             {
        return core::system::dlclose(library.handle);
    }

References core::system::dlclose(), and core::DynamicLoader::Library::handle.

Referenced by dlClose().

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Friends And Related Symbol Documentation

EventLoop

friend class EventLoop

friend

Definition at line 86 of file DynamicLoader.h.

EventMultiplexer

friend class EventMultiplexer

friend

Definition at line 87 of file DynamicLoader.h.

Member Data Documentation

closeHandles

std::list< void * > core::DynamicLoader::closeHandles

staticprivate

Definition at line 84 of file DynamicLoader.h.

Referenced by dlCloseDelayed(), execDlCloseAll(), and execDlCloseDeleyed().

dlOpenedLibraries

std::map< void *, DynamicLoader::Library > core::DynamicLoader::dlOpenedLibraries

staticprivate

Definition at line 83 of file DynamicLoader.h.

Referenced by dlClose(), dlCloseDelayed(), dlRegisterHandle(), execDlCloseAll(), and execDlCloseDeleyed().

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

• core/DynamicLoader.h
• core/DynamicLoader.cpp