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arts/mcop/dispatcher.cc

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26 KiB

/*
Copyright (C) 2000-2001 Stefan Westerfeld
stefan@space.twc.de
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <config.h>
#include "dispatcher.h"
#include "delayedreturn.h"
#include "startupmanager.h"
#include "unixconnection.h"
#include "tcpconnection.h"
#include "referenceclean.h"
#include "core.h"
#include "md5auth.h"
#include "mcoputils.h"
#include "loopback.h"
#include "debug.h"
#include "ifacerepo_impl.h"
#include "thread.h"
#include <sys/stat.h>
#include <stdio.h>
#include <signal.h>
#include <cstring>
#include <cstdlib>
#include <errno.h>
#include <iostream>
#if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#elif HAVE_SYS_TIME_H
# include <sys/time.h>
#else
# include <time.h>
#endif
/* Dispatcher private data class (to ensure binary compatibility) */
using namespace std;
using namespace Arts;
namespace Arts {
class DispatcherWakeUpHandler;
class DispatcherPrivate {
public:
GlobalComm globalComm;
InterfaceRepo interfaceRepo;
AuthAccept *accept;
LoopbackConnection *loopbackConnection;
DelayedReturn *delayedReturn;
bool allowNoAuthentication;
Mutex mutex;
/*
* Thread condition that gets signalled whenever something relevant for
* waitForResult happens. Note that broken connections are also relevant
* for waitForResult.
*/
ThreadCondition requestResultCondition;
/*
* Thread condition that gets signalled whenever something relevant for
* the server connection process happens. This is either:
* - authentication fails
* - authentication succeeds
* - a connection breaks
*/
ThreadCondition serverConnectCondition;
DispatcherWakeUpHandler *wakeUpHandler;
};
/**
* Class that performs dispatcher wakeup.
*
* The sending thread (requesting wakeup) writes a byte to a pipe. The
* main thread watches the pipe, and as soon as the byte arrives, gets
* woken by the IOManager. This should work, no matter what type of IOManager
* is used (i.e. StdIOManager/GIOManager/QIOManager).
*/
class DispatcherWakeUpHandler : public IONotify {
private:
enum { wReceive = 0, wSend = 1 };
int wakeUpPipe[2];
public:
DispatcherWakeUpHandler()
{
if(pipe(wakeUpPipe) != 0)
arts_fatal("can't initialize wakeUp pipe (%s)",strerror(errno));
Dispatcher::the()->ioManager()->watchFD(wakeUpPipe[wReceive],
IOType::read | IOType::reentrant, this);
}
virtual ~DispatcherWakeUpHandler()
{
Dispatcher::the()->ioManager()->remove(this, IOType::all);
close(wakeUpPipe[wSend]);
close(wakeUpPipe[wReceive]);
}
void notifyIO(int fd, int type)
{
arts_return_if_fail(fd == wakeUpPipe[wReceive]);
arts_return_if_fail(type == IOType::read);
mcopbyte one;
int result;
do
result = read(wakeUpPipe[wReceive],&one,1);
while(result < 0 && errno == EINTR);
}
void wakeUp()
{
mcopbyte one = 1;
int result;
do
result = write(wakeUpPipe[wSend],&one,1);
while(result < 0 && errno == EINTR);
}
};
}
Dispatcher *Dispatcher::_instance = 0;
Dispatcher::Dispatcher(IOManager *ioManager, StartServer startServer)
{
assert(!_instance);
_instance = this;
/* private data pointer */
d = new DispatcherPrivate();
lock();
/* makes arts_debug/arts_message/arts_return_if_fail/... threadsafe */
Debug::initMutex();
generateServerID();
if(ioManager)
{
_ioManager = ioManager;
deleteIOManagerOnExit = false;
}
else
{
_ioManager = new StdIOManager;
deleteIOManagerOnExit = true;
}
d->wakeUpHandler = new DispatcherWakeUpHandler;
objectManager = new ObjectManager;
notificationManager = new NotificationManager;
if(startServer & startUnixServer)
{
unixServer = new UnixServer(this,serverID);
if(!unixServer->running())
{
delete unixServer;
arts_warning("[mcop dispatcher] Couldn't start UnixServer");
unixServer = 0;
}
}
else unixServer = 0;
if(startServer & startTCPServer)
{
tcpServer = new TCPServer(this);
if(!tcpServer->running())
{
delete tcpServer;
arts_warning("[mcop dispatcher] Couldn't start TCPServer");
tcpServer = 0;
}
}
else tcpServer = 0;
d->allowNoAuthentication = startServer & noAuthentication;
d->accept = 0;
d->loopbackConnection = new LoopbackConnection(serverID);
d->interfaceRepo = InterfaceRepo::_from_base(new InterfaceRepo_impl());
d->delayedReturn = 0;
_flowSystem = 0;
referenceClean = new ReferenceClean(objectPool);
/*
* setup signal handler for SIGPIPE
*/
orig_sigpipe = signal(SIGPIPE,SIG_IGN);
if((orig_sigpipe != SIG_DFL) && (orig_sigpipe != SIG_IGN))
{
cerr << "[mcop dispatcher] warning: user defined signal handler found for"
" SIG_PIPE, overriding" << endl;
}
StartupManager::startup();
/*
* this is required for publishing global references - might be a good
* reason for startup priorities as since this is required for cookie&co,
* no communication is possible without that
*/
char *env = getenv("ARTS_SERVER");
bool envOk = false;
if(env)
{
string url = "tcp:"; url += env;
Connection *conn = connectUrl(url);
arts_debug("connection to %s for globalComm", url.c_str());
if(conn)
{
arts_debug("hint %s", conn->findHint("GlobalComm").c_str());
d->globalComm = Reference(conn->findHint("GlobalComm"));
envOk = true;
arts_debug("using globalcomm from env variable");
}
}
if(!envOk)
{
string globalCommName
= MCOPUtils::readConfigEntry("GlobalComm","Arts::TmpGlobalComm");
d->globalComm = GlobalComm(SubClass(globalCommName));
}
// --- initialize MD5auth ---
/*
* Path for random seed: better to store it in home, because some
* installations wipe /tmp on reboot.
*/
string seedpath = MCOPUtils::createFilePath("random-seed");
string mcopdir = MCOPUtils::mcopDirectory();
if(!mcopdir.empty()) seedpath = mcopdir + "/random-seed";
arts_md5_auth_init_seed(seedpath.c_str());
/*
* first generate a new random cookie and try to set secret-cookie to it
* as put will not overwrite, this has no effect if there is already a
* secret cookie
*/
char *cookie = arts_md5_auth_mkcookie();
globalComm().put("secret-cookie",cookie);
/*
* Then get the secret cookie from globalComm. As we've just set one,
* and as it is never removed, this always works.
*/
string secretCookie = globalComm().get("secret-cookie");
if(!arts_md5_auth_set_cookie(secretCookie.c_str()))
{
/*
* Handle the case where the cookie obtained from GlobalComm is not
* a valid cookie (i.e. too short) - this should practically never
* happen. In this case, we will remove the cookie and overwrite it
* with our previously generated cookie.
*/
arts_warning("[mcop dispatcher] Bad md5 secret-cookie obtained from %s - replacing it",
globalComm()._interfaceName().c_str());
globalComm().erase("secret-cookie");
globalComm().put("secret-cookie",cookie);
if(!arts_md5_auth_set_cookie(cookie))
arts_fatal("error initializing md5 secret cookie "
"(generated cookie invalid)");
}
memset(cookie,0,strlen(cookie)); // try to keep memory clean
free(cookie);
string::iterator i; // try to keep memory clean from secret cookie
for(i=secretCookie.begin();i != secretCookie.end();i++) *i = 'y';
unlock();
}
Dispatcher::~Dispatcher()
{
lock();
/* no interaction possible now anymore - remove our global references */
if(objectManager)
objectManager->removeGlobalReferences();
/* remove everything that might have been tagged for remote copying */
referenceClean->forceClean();
delete referenceClean;
d->globalComm = GlobalComm::null();
/* shutdown all extensions we loaded */
if(objectManager)
objectManager->shutdownExtensions();
StartupManager::shutdown();
/* drop all open connections */
list<Connection *>::iterator ci;
for(ci=connections.begin(); ci != connections.end();ci++)
{
Connection *conn = *ci;
conn->drop();
}
d->requestResultCondition.wakeAll();
d->serverConnectCondition.wakeAll();
/*
* remove signal handler for SIGPIPE
*/
signal(SIGPIPE,orig_sigpipe);
d->interfaceRepo = InterfaceRepo::null();
if(d->accept)
{
delete d->accept;
d->accept = 0;
}
if(d->loopbackConnection)
{
d->loopbackConnection->_release();
d->loopbackConnection = 0;
}
if(unixServer)
{
delete unixServer;
unixServer = 0;
}
if(tcpServer)
{
delete tcpServer;
tcpServer = 0;
}
if(notificationManager)
{
delete notificationManager;
notificationManager = 0;
}
if(objectManager && Object_base::_objectCount() == 0)
{
objectManager->removeExtensions();
delete objectManager;
objectManager = 0;
}
if(d->wakeUpHandler)
{
delete d->wakeUpHandler;
d->wakeUpHandler = 0;
}
if(deleteIOManagerOnExit)
{
delete _ioManager;
_ioManager = 0;
}
if(Object_base::_objectCount())
{
cerr << "[mcop dispatcher] warning: leaving MCOP Dispatcher and still "
<< Object_base::_objectCount() << " object references alive." << endl;
list<Object_skel *> which = objectPool.enumerate();
list<Object_skel *>::iterator i;
for(i = which.begin(); i != which.end();i++)
cerr << " - " << (*i)->_interfaceName() << endl;
}
if(Type::_typeCount())
{
cerr << "[mcop dispatcher] warning: leaving MCOP Dispatcher and still "
<< Type::_typeCount() << " types alive." << endl;
}
if(GenericDataPacket::_dataPacketCount())
{
cerr << "[mcop dispatcher] warning: leaving MCOP Dispatcher and still "
<< GenericDataPacket::_dataPacketCount()
<< " data packets alive." << endl;
}
Debug::freeMutex();
unlock();
/* private data pointer */
assert(d);
delete d;
d = 0;
assert(_instance);
_instance = 0;
}
InterfaceRepo Dispatcher::interfaceRepo()
{
return d->interfaceRepo;
}
FlowSystem_impl *Dispatcher::flowSystem()
{
assert(_flowSystem);
return _flowSystem;
}
GlobalComm Dispatcher::globalComm()
{
assert(!d->globalComm.isNull());
return d->globalComm;
}
void Dispatcher::setFlowSystem(FlowSystem_impl *fs)
{
assert(!_flowSystem);
_flowSystem = fs;
}
Dispatcher *Dispatcher::the()
{
return _instance;
}
Buffer *Dispatcher::waitForResult(long requestID, Connection *connection)
{
bool isMainThread = SystemThreads::the()->isMainThread();
Buffer *b = requestResultPool[requestID];
connection->_copy(); // Keep extra ref
while(!b && !connection->broken()) {
if(isMainThread)
_ioManager->processOneEvent(true);
else
d->requestResultCondition.wait(d->mutex);
b = requestResultPool[requestID];
}
requestResultPool.releaseSlot(requestID);
if(connection->broken()) // connection went away before we got some result
b = 0;
connection->_release(); // Give up extra ref
return b;
}
Buffer *Dispatcher::createRequest(long& requestID, long objectID, long methodID)
{
Buffer *buffer = new Buffer;
// write mcop header record
buffer->writeLong(MCOP_MAGIC);
buffer->writeLong(0); // message length - to be patched later
buffer->writeLong(mcopInvocation);
// generate a request ID
requestID = requestResultPool.allocSlot();
// write invocation record
buffer->writeLong(objectID);
buffer->writeLong(methodID);
buffer->writeLong(requestID);
return buffer;
}
Buffer *Dispatcher::createOnewayRequest(long objectID, long methodID)
{
Buffer *buffer = new Buffer;
// write mcop header record
buffer->writeLong(MCOP_MAGIC);
buffer->writeLong(0); // message length - to be patched later
buffer->writeLong(mcopOnewayInvocation);
// write oneway invocation record
buffer->writeLong(objectID);
buffer->writeLong(methodID);
return buffer;
}
void Dispatcher::handle(Connection *conn, Buffer *buffer, long messageType)
{
_activeConnection = conn;
#ifdef DEBUG_IO
printf("got a message %ld, %ld bytes in body\n",
messageType,buffer->remaining());
if(conn->connState() == Connection::unknown)
cout << "connectionState = unknown" << endl;
if(conn->connState() == Connection::expectClientHello)
cout << "connectionState = expectClientHello" << endl;
if(conn->connState() == Connection::expectServerHello)
cout << "connectionState = expectServerHello" << endl;
if(conn->connState() == Connection::expectAuthAccept)
cout << "connectionState = expectAuthAccept" << endl;
if(conn->connState() == Connection::established)
cout << "connectionState = established" << endl;
#endif
switch(conn->connState())
{
case Connection::established:
/*
* we're connected to a trusted server, so we can accept
* invocations
*/
if(messageType == mcopInvocation) {
#ifdef DEBUG_MESSAGES
printf("[got Invocation]\n");
#endif
long objectID = buffer->readLong();
long methodID = buffer->readLong();
long requestID = buffer->readLong();
Buffer *result = new Buffer;
// write mcop header record
result->writeLong(MCOP_MAGIC);
result->writeLong(0); // message length - to be patched later
result->writeLong(mcopReturn);
// write result record (returnCode is written by dispatch)
result->writeLong(requestID);
// perform the request
Object_skel *object = objectPool[objectID];
object->_copy();
object->_dispatch(buffer,result,methodID);
object->_release();
assert(!buffer->readError() && !buffer->remaining());
delete buffer;
if(d->delayedReturn)
{
delete result;
result = new Buffer;
result->writeLong(MCOP_MAGIC);
result->writeLong(0); // to be patched later
result->writeLong(mcopReturn);
result->writeLong(requestID);
d->delayedReturn->initialize(conn,result);
d->delayedReturn = 0;
}
else /* return normally */
{
result->patchLength();
conn->qSendBuffer(result);
}
return; /* everything ok - leave here */
}
if(messageType == mcopReturn)
{
#ifdef DEBUG_MESSAGES
printf("[got Return]\n");
#endif
long requestID = buffer->readLong();
requestResultPool[requestID] = buffer;
d->requestResultCondition.wakeAll();
return; /* everything ok - leave here */
}
if(messageType == mcopOnewayInvocation) {
#ifdef DEBUG_MESSAGES
printf("[got OnewayInvocation]\n");
#endif
long objectID = buffer->readLong();
long methodID = buffer->readLong();
// perform the request
Object_skel *object = objectPool[objectID];
object->_copy();
object->_dispatch(buffer,methodID);
object->_release();
assert(!buffer->readError() && !buffer->remaining());
delete buffer;
return; /* everything ok - leave here */
}
break;
case Connection::expectServerHello:
if(messageType == mcopServerHello)
{
#ifdef DEBUG_MESSAGES
printf("[got ServerHello]\n");
#endif
/*
* if we get a server hello, answer with a client hello
*/
ServerHello h;
h.readType(*buffer);
bool valid = (!buffer->readError() && !buffer->remaining());
delete buffer;
if(!valid) break; // invalid hello received -> forget it
conn->setServerID(h.serverID);
/*
* check if md5auth or noauth is offered by the server
*/
bool md5authSupported = false;
bool noauthSupported = false;
vector<string>::iterator ai;
for(ai = h.authProtocols.begin(); ai != h.authProtocols.end(); ai++)
{
if(*ai == "md5auth") md5authSupported = true;
if(*ai == "noauth") noauthSupported = true;
}
if(noauthSupported) // noauth is usually easier to pass ;)
{
Buffer *helloBuffer = new Buffer;
Header header(MCOP_MAGIC,0,mcopClientHello);
header.writeType(*helloBuffer);
ClientHello clientHello(serverID,"noauth","");
clientHello.writeType(*helloBuffer);
helloBuffer->patchLength();
conn->qSendBuffer(helloBuffer);
conn->setConnState(Connection::expectAuthAccept);
return; /* everything ok - leave here */
}
else if(md5authSupported)
{
Buffer *helloBuffer = new Buffer;
Header header(MCOP_MAGIC,0,mcopClientHello);
header.writeType(*helloBuffer);
ClientHello clientHello(serverID,"md5auth","");
const char *random_cookie = h.authSeed.c_str();
if(strlen(random_cookie) == 32)
{
char *response = arts_md5_auth_mangle(random_cookie);
clientHello.authData = response;
#ifdef DEBUG_AUTH
printf(" got random_cookie = %s\n",random_cookie);
printf("reply with authData = %s\n",response);
#endif
free(response);
}
clientHello.writeType(*helloBuffer);
helloBuffer->patchLength();
conn->qSendBuffer(helloBuffer);
conn->setConnState(Connection::expectAuthAccept);
return; /* everything ok - leave here */
}
else
{
cerr << "[mcop dispatcher] error: don't know authentication protocol" << endl;
cerr << " server offered: ";
for(ai = h.authProtocols.begin(); ai != h.authProtocols.end(); ai++)
cerr << *ai << " ";
cerr << endl;
}
}
break;
case Connection::expectClientHello:
if(messageType == mcopClientHello)
{
#ifdef DEBUG_MESSAGES
printf("[got ClientHello]\n");
#endif
ClientHello c;
c.readType(*buffer);
bool valid = (!buffer->readError() && !buffer->remaining());
delete buffer;
if(valid && (
(c.authProtocol == "md5auth" && c.authData == conn->cookie())
|| (c.authProtocol == "noauth" && d->allowNoAuthentication) ))
{
conn->setServerID(c.serverID);
/* build hints only for the first connection */
if(!d->accept)
{
d->accept = new AuthAccept();
d->accept->hints.push_back(
"GlobalComm="+d->globalComm.toString());
d->accept->hints.push_back(
"InterfaceRepo="+d->interfaceRepo.toString());
}
Buffer *helloBuffer = new Buffer;
Header header(MCOP_MAGIC,0,mcopAuthAccept);
header.writeType(*helloBuffer);
d->accept->writeType(*helloBuffer);
helloBuffer->patchLength();
conn->qSendBuffer(helloBuffer);
conn->setConnState(Connection::established);
return; /* everything ok - leave here */
}
}
break;
case Connection::expectAuthAccept:
if(messageType == mcopAuthAccept)
{
#ifdef DEBUG_MESSAGES
printf("[got AuthAccept]\n");
#endif
AuthAccept a;
a.readType(*buffer);
delete buffer;
#ifdef DEBUG_MESSAGES
vector<string>::iterator hi;
for(hi = a.hints.begin(); hi != a.hints.end(); hi++)
cout << "[got ConnectionHint] " << *hi << endl;
#endif
conn->setConnState(Connection::established);
conn->setHints(a.hints);
d->serverConnectCondition.wakeAll();
return; /* everything ok - leave here */
}
break;
case Connection::unknown:
assert(false);
break;
}
/*
* We shouldn't reach this point if everything went all right
*/
cerr << "[mcop dispatcher] Fatal communication error with a client" << endl;
if(conn->connState() != Connection::established)
{
cerr << "[mcop dispatcher] Authentication of this client was not successful" << endl;
cerr << "[mcop dispatcher] Connection dropped" << endl;
conn->drop();
}
}
long Dispatcher::addObject(Object_skel *object)
{
long objectID = objectPool.allocSlot();
objectPool[objectID] = object;
return objectID;
}
void Dispatcher::removeObject(long objectID)
{
assert(objectPool[objectID]);
objectPool.releaseSlot(objectID);
}
void Dispatcher::generateServerID()
{
char *buffer;
buffer = arts_strdup_printf("%s-%04x-%08lx",
MCOPUtils::getFullHostname().c_str(),
getpid(),time(0));
serverID = buffer;
free(buffer);
}
string Dispatcher::objectToString(long objectID)
{
Buffer b;
ObjectReference oref;
oref.serverID = serverID;
oref.objectID = objectID;
// prefer a unix domainsocket connection over a plain tcp connection
if(unixServer) oref.urls.push_back(unixServer->url());
if(tcpServer) oref.urls.push_back(tcpServer->url());
oref.writeType(b);
return b.toString("MCOP-Object");
}
bool Dispatcher::stringToObjectReference(ObjectReference& r, const string& s)
{
if(strncmp(s.c_str(),"global:",7) == 0)
{
// if the object reference starts with "global:", it refers to
// a global object which can be found with the objectManager
string lookup = objectManager->getGlobalReference(&s.c_str()[7]);
return stringToObjectReference(r,lookup);
}
Buffer b;
if(!b.fromString(s,"MCOP-Object")) return false;
r.readType(b);
if(b.readError() || b.remaining()) return false;
return true;
}
void *Dispatcher::connectObjectLocal(ObjectReference& reference,
const string& interface)
{
if(reference.serverID == serverID)
{
void *result = objectPool[reference.objectID]->_cast(interface);
if(result)
{
objectPool[reference.objectID]->_copy();
return result;
}
}
return 0;
}
Connection *Dispatcher::connectObjectRemote(ObjectReference& reference)
{
if(reference.serverID == "null") // null reference?
return 0;
if(reference.serverID == serverID)
return loopbackConnection();
list<Connection *>::iterator i;
for(i=connections.begin(); i != connections.end();i++)
{
Connection *conn = *i;
if(conn->isConnected(reference.serverID))
{
// fixme: we should check for the existence of the object
// and increment a reference count or something like that
return conn;
}
}
/* try to connect the server */
vector<string>::iterator ui;
for(ui = reference.urls.begin(); ui != reference.urls.end(); ui++)
{
Connection *conn = connectUrl(*ui);
if(conn)
{
if(conn->isConnected(reference.serverID))
{
return conn;
}
else
{
/* we connected somewhere, but not the right server ;) */
connections.remove(conn);
conn->_release();
}
}
}
return 0;
}
Connection *Dispatcher::connectUrl(const string& url)
{
Connection *conn = 0;
bool isMainThread = SystemThreads::the()->isMainThread();
if(strncmp(url.c_str(),"tcp:",4) == 0)
{
conn = new TCPConnection(url);
}
else if(strncmp(url.c_str(),"unix:",5) == 0)
{
conn = new UnixConnection(url);
}
if(conn)
{
conn->_copy(); // Keep extra ref for when the connection breaks
conn->setConnState(Connection::expectServerHello);
while((conn->connState() != Connection::established)
&& !conn->broken())
{
if(isMainThread)
_ioManager->processOneEvent(true);
else
d->serverConnectCondition.wait(d->mutex);
}
if(conn->connState() == Connection::established)
{
connections.push_back(conn);
conn->_release(); // Give up extra ref
return conn;
}
// well - bad luck (building a connection failed)
// Give up extra ref
conn->_release();
}
return 0;
}
void Dispatcher::run()
{
assert(SystemThreads::the()->isMainThread());
_ioManager->run();
}
void Dispatcher::terminate()
{
_ioManager->terminate();
}
void Dispatcher::initiateConnection(Connection *connection)
{
vector<string> authProtocols;
authProtocols.push_back("md5auth");
if(d->allowNoAuthentication)
authProtocols.push_back("noauth");
char *authSeed = arts_md5_auth_mkcookie();
char *authResult = arts_md5_auth_mangle(authSeed);
Buffer *helloBuffer = new Buffer;
Header header(MCOP_MAGIC,0,mcopServerHello);
header.writeType(*helloBuffer);
ServerHello serverHello("aRts/MCOP-1.0.0",serverID,authProtocols,authSeed);
serverHello.writeType(*helloBuffer);
helloBuffer->patchLength();
connection->qSendBuffer(helloBuffer);
connection->setConnState(Connection::expectClientHello);
connection->setCookie(authResult);
free(authSeed);
free(authResult);
connections.push_back(connection);
}
void Dispatcher::handleCorrupt(Connection *connection)
{
if(connection->connState() != Connection::established)
{
cerr << "[mcop dispatcher] Received corrupt message on unauthenticated connection" <<endl;
cerr << "closing connection." << endl;
connection->drop();
d->serverConnectCondition.wakeAll();
}
else
{
cerr << "[mcop dispatcher] warning: got corrupt MCOP message !??" << endl;
}
}
void Dispatcher::handleConnectionClose(Connection *connection)
{
/*
* we can't use enumerate here, because the "existing objects list" might
* be changing due to the other _disconnectRemote calls we make, so we
* enumerate() the objects manually
*/
unsigned long l;
for(l=0; l<objectPool.max(); l++)
{
Object_skel *skel = objectPool[l];
if(skel) skel->_disconnectRemote(connection);
}
d->requestResultCondition.wakeAll();
d->serverConnectCondition.wakeAll();
/*
* FIXME:
*
* there may be error handling to do (e.g., check that the _stub's that
* still refer to that connection don't crash now).
*/
connection->_release();
list<Connection *>::iterator i;
for(i=connections.begin(); i != connections.end();i++)
{
if(*i == connection)
{
connections.erase(i);
return;
}
}
}
Connection *Dispatcher::activeConnection()
{
return _activeConnection;
}
Connection *Dispatcher::loopbackConnection()
{
return d->loopbackConnection;
}
DelayedReturn *Dispatcher::delayReturn()
{
assert(!d->delayedReturn);
return d->delayedReturn = new DelayedReturn();
}
Object_skel *Dispatcher::getLocalObject(long objectID)
{
Object_skel *result = objectPool[objectID];
if(result) result->_copy();
return result;
}
void Dispatcher::lock()
{
_instance->d->mutex.lock();
}
void Dispatcher::unlock()
{
_instance->d->mutex.unlock();
}
void Dispatcher::wakeUp()
{
if(SystemThreads::the()->isMainThread()) return;
_instance->d->wakeUpHandler->wakeUp();
}
/*
void Dispatcher::reloadTraderData() is declared in trader_impl.cc
*/