Helper::SessionBase Class Reference

represents a single helper process More...

#include <helper.h>

Inheritance diagram for Helper::SessionBase:

Collaboration diagram for Helper::SessionBase:

Classes
struct	_helper_flags

Public Types
using	Requests = std::list< Xaction * >

Public Member Functions
	~SessionBase () override
void	closePipesSafely ()
void	closeWritePipeSafely ()
virtual bool	reserved ()=0
	whether the server is locked for exclusive use by a client More...
virtual Client &	helper () const =0
	our creator (parent) object More...
virtual void	dropQueued ()
	dequeues and sends an Unknown answer to all queued requests More...
void	initStats ()
virtual void *	toCbdata ()=0

Static Public Member Functions
static void	HelperServerClosed (SessionBase *)
	close handler to handle exited server processes More...

Public Attributes
const InstanceId< SessionBase >	index
int	pid
Ip::Address	addr
Comm::ConnectionPointer	readPipe
Comm::ConnectionPointer	writePipe
void *	hIpc
char *	rbuf
size_t	rbuf_sz
size_t	roffset
struct timeval	dispatch_time
struct timeval	answer_time
dlink_node	link
struct Helper::SessionBase::_helper_flags	flags
Requests	requests
	requests in order of submission/expiration More...
struct {
uint64_t   uses
uint64_t   replies
uint64_t   pending
uint64_t   releases
uint64_t   timedout
}	stats

Private Member Functions
virtual void	finalizedInCbdataChild ()=0
	hack: ensure CBDATA_CHILD() after a toCbdata()-defining CBDATA_INTERMEDIATE() More...

Detailed Description

Definition at line 192 of file helper.h.

Member Typedef Documentation

Requests

using Helper::SessionBase::Requests = std::list<Xaction *>

Definition at line 247 of file helper.h.

Constructor & Destructor Documentation

~SessionBase()

Helper::SessionBase::~SessionBase ( )

override

Definition at line 134 of file helper.cc.

References memFreeBuf().

Member Function Documentation

closePipesSafely()

void Helper::SessionBase::closePipesSafely

(

)

Closes pipes to the helper safely. Handles the case where the read and write pipes are the same FD.

Definition at line 72 of file helper.cc.

References DBG_IMPORTANT, debugs, getCurrentTime(), hIpc, and pid.

Referenced by helperReturnBuffer(), helperStatefulHandleRead(), and helperStatefulShutdown().

closeWritePipeSafely()

void Helper::SessionBase::closeWritePipeSafely

(

)

Closes the reading pipe. If the read and write sockets are the same the write pipe will also be closed. Otherwise its left open for later handling.

Definition at line 98 of file helper.cc.

References DBG_IMPORTANT, debugs, getCurrentTime(), hIpc, and pid.

Referenced by helperReturnBuffer(), and helperStatefulServerDone().

dropQueued()

void Helper::SessionBase::dropQueued ( )

virtual

Reimplemented in Helper::Session.

Definition at line 122 of file helper.cc.

References Helper::Unknown.

Referenced by Helper::Session::dropQueued(), and HelperServerClosed().

finalizedInCbdataChild()

virtual void CbdataParent::finalizedInCbdataChild ( )

privatepure virtualinherited

helper()

virtual Client& Helper::SessionBase::helper ( ) const

pure virtual

Implemented in helper_stateful_server, and Helper::Session.

Referenced by HelperServerClosed().

HelperServerClosed()

void Helper::SessionBase::HelperServerClosed ( SessionBase *  srv )

static

Definition at line 928 of file helper.cc.

References dropQueued(), Helper::Client::handleKilledServer(), and helper().

Referenced by Helper::Client::openSessions(), and statefulhelper::openSessions().

initStats()

void Helper::SessionBase::initStats

(

)

Definition at line 62 of file helper.cc.

References stats.

Referenced by statefulhelper::openSessions().

reserved()

virtual bool Helper::SessionBase::reserved ( )

pure virtual

Implemented in helper_stateful_server, and Helper::Session.

toCbdata()

virtual void* CbdataParent::toCbdata ( )

pure virtualinherited

Referenced by AsyncJob::callException(), and AsyncJob::callStart().

Member Data Documentation

addr

Ip::Address Helper::SessionBase::addr

Definition at line 227 of file helper.h.

Referenced by statefulhelper::openSessions().

answer_time

struct timeval Helper::SessionBase::answer_time

Definition at line 237 of file helper.h.

Referenced by helperReturnBuffer(), and helperStatefulHandleRead().

dispatch_time

struct timeval Helper::SessionBase::dispatch_time

Definition at line 236 of file helper.h.

Referenced by helperReturnBuffer(), helperStatefulDispatch(), and helperStatefulHandleRead().

flags

struct Helper::SessionBase::_helper_flags Helper::SessionBase::flags

Referenced by Helper::Client::handleKilledServer(), helperDispatch(), helperReturnBuffer(), helperStatefulServerDone(), helperStatefulShutdown(), and StatefulGetFirstAvailable().

hIpc

void* Helper::SessionBase::hIpc

Definition at line 230 of file helper.h.

Referenced by statefulhelper::openSessions().

index

const InstanceId<SessionBase> Helper::SessionBase::index

Helper program identifier; does not change when contents do, including during assignment

Definition at line 224 of file helper.h.

Referenced by GetFirstAvailable(), Helper::Client::handleKilledServer(), helperDispatch(), helperReturnBuffer(), helperStatefulDispatch(), helperStatefulHandleRead(), helperStatefulKickQueue(), helperStatefulShutdown(), and StatefulGetFirstAvailable().

link

dlink_node Helper::SessionBase::link

Definition at line 239 of file helper.h.

Referenced by statefulhelper::openSessions().

pending

uint64_t Helper::SessionBase::pending

Definition at line 253 of file helper.h.

Referenced by GetFirstAvailable(), helperDispatch(), helperReturnBuffer(), helperStatefulDispatch(), helperStatefulHandleRead(), helperStatefulServerDone(), helperStatefulShutdown(), and StatefulGetFirstAvailable().

pid

int Helper::SessionBase::pid

Definition at line 226 of file helper.h.

Referenced by statefulhelper::openSessions().

rbuf

char* Helper::SessionBase::rbuf

Definition at line 232 of file helper.h.

Referenced by helperStatefulHandleRead(), and statefulhelper::openSessions().

rbuf_sz

size_t Helper::SessionBase::rbuf_sz

Definition at line 233 of file helper.h.

Referenced by helperReturnBuffer(), helperStatefulHandleRead(), and statefulhelper::openSessions().

readPipe

Comm::ConnectionPointer Helper::SessionBase::readPipe

Definition at line 228 of file helper.h.

Referenced by helperStatefulHandleRead(), and statefulhelper::openSessions().

releases

uint64_t Helper::SessionBase::releases

Definition at line 254 of file helper.h.

replies

uint64_t Helper::SessionBase::replies

Definition at line 252 of file helper.h.

Referenced by Helper::Client::handleKilledServer(), helperReturnBuffer(), and helperStatefulHandleRead().

requests

Requests Helper::SessionBase::requests

Definition at line 248 of file helper.h.

Referenced by helperDispatch(), helperStatefulDispatch(), and helperStatefulHandleRead().

roffset

size_t Helper::SessionBase::roffset

Definition at line 234 of file helper.h.

Referenced by helperStatefulHandleRead(), and statefulhelper::openSessions().

stats

struct { ... } Helper::SessionBase::stats

Referenced by GetFirstAvailable(), Helper::Client::handleKilledServer(), helperDispatch(), helperReturnBuffer(), helperStatefulDispatch(), helperStatefulHandleRead(), helperStatefulServerDone(), helperStatefulShutdown(), initStats(), and StatefulGetFirstAvailable().

timedout

uint64_t Helper::SessionBase::timedout

Definition at line 255 of file helper.h.

uses

uint64_t Helper::SessionBase::uses

Definition at line 251 of file helper.h.

Referenced by helperDispatch(), and helperStatefulDispatch().

writePipe

Comm::ConnectionPointer Helper::SessionBase::writePipe

Definition at line 229 of file helper.h.

Referenced by helperDispatch(), helperStatefulDispatch(), and statefulhelper::openSessions().

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

• src/helper.h
• src/helper.cc