void on_surface_changed(int width, int height)
{
Message* m = MESSAGE(Message::MSG_RESIZE);
m->AddData(DAT(width));
m->AddData(DAT(height));
gCore->SendMessage(m);
}
status_t ConvertFromAMessage(const os::Message & from, Message & to)
{
to.Clear();
to.what = from.GetCode();
int numNames = from.GetNumNames();
for (int32 i=0; i<numNames; i++)
{
int type;
int count;
std::string name = from.GetName(i);
if (from.GetNameInfo(name.c_str(), &type, &count) == B_NO_ERROR)
{
for (int j=0; j<count; j++)
{
const void * nextItem;
size_t itemSize;
if (from.FindData(name.c_str(), type, &nextItem, &itemSize, j) != B_NO_ERROR) return B_ERROR;
// do any necessary translation from the AtheOS data types to Muscle data types
switch(type)
{
case os::T_POINT:
{
const os::Point * p = static_cast<const os::Point *>(nextItem);
Point pPoint(p->x, p->y);
if (to.AddPoint(name.c_str(), pPoint) != B_NO_ERROR) return B_ERROR;
}
break;
case os::T_RECT:
{
const os::Rect * r = static_cast<const os::Rect *>(nextItem);
Rect pRect(r->left, r->top, r->right, r->bottom);
if (to.AddRect(name.c_str(), pRect) != B_NO_ERROR) return B_ERROR;
}
break;
case os::T_MESSAGE:
{
os::Message amsg;
if (amsg.Unflatten(static_cast<const uint8 *>(nextItem)) != B_NO_ERROR) return B_ERROR;
Message * newMsg = newnothrow Message;
if (newMsg)
{
MessageRef msgRef(newMsg);
if (ConvertFromAMessage(amsg, *newMsg) != B_NO_ERROR) return B_ERROR;
if (to.AddMessage(name.c_str(), msgRef) != B_NO_ERROR) return B_ERROR;
}
else {WARN_OUT_OF_MEMORY; return B_ERROR;}
}
break;
default:
if (to.AddData(name.c_str(), type, nextItem, itemSize) != B_NO_ERROR) return B_ERROR;
break;
}
}
}
}
return B_NO_ERROR;
}
int main(int argc, char **argv)
{ // Testing standard message passing with short message {{{
{ string shortmsg="Hello World";
Channel_FIFO *c1;
try
{ c1=new Channel_FIFO();
} catch (string s)
{ cerr << "Error in channel creation." << endl
<< "Message was: " << s << endl;
return 1;
}
try // {{{
{ Message msg;
msg.AddData(shortmsg.c_str(),shortmsg.size()+1);
c1->SingleSend(msg);
cout << "Short message sent." << endl;
} catch (string s)
{ cerr << "Error sending message." << endl
<< "Message was: " << s << endl;
return 1;
} // }}}
try // {{{
{ Message msg;
c1->SingleReceive(msg);
string msgstr=msg.GetData();
if (msgstr==shortmsg)
cout << "Received short message correctly." << endl;
else
throw (string)"Received wrong message:\n"
+ "Original Message: " + shortmsg + "\n"
+ "Received Message: " + msgstr;
} catch (string s)
{ cerr << "Error receiving message." << endl
<< "Message was: " << s << endl;
return 1;
} // }}}
try // {{{
{ Message msg;
msg.AddData(shortmsg.c_str(),shortmsg.size()+1);
c1->SingleSend(msg);
cout << "Short message sent." << endl;
} catch (string s)
{ cerr << "Error sending message." << endl
<< "Message was: " << s << endl;
return 1;
} // }}}
try // {{{
{ Message msg;
c1->SingleReceive(msg);
string msgstr=msg.GetData();
if (msgstr==shortmsg)
cout << "Received short message correctly." << endl;
else
throw (string)"Received wrong message:\n"
+ "Original Message: " + shortmsg + "\n"
+ "Received Message: " + msgstr;
} catch (string s)
{ cerr << "Error receiving message." << endl
<< "Message was: " << s << endl;
return 1;
} // }}}
c1->Unlink();
delete c1;
}
// }}}
return 0;
}
int main(int argc, char **argv)
{ system("mkfifo ./ch1");
system("mkfifo ./ch2");
pid_t pid=fork();
switch (pid)
{ case -1: // Error {{{
cerr << "Error during fork!" << endl;
return 1; // }}}
case 0: // child process {{{
try
{ vector<Channel*> link;
link.push_back(new Channel_FIFO("./ch1"));
link.push_back(new Channel_FIFO("./ch2"));
Session_FIFO s(link,0,3);
Message msg;
string strmsg1="P0->P1";
msg.AddData(strmsg1.c_str(),strmsg1.size()+1);
s.Send(1,msg);
cout << "Sent: " << strmsg1 << " to participant 1" << endl;
msg.Clear();
string strmsg2="P0->P2";
msg.AddData(strmsg2.c_str(),strmsg2.size()+1);
s.Send(2,msg);
cout << "Sent: " << strmsg2 << " to participant 2" << endl;
msg.Clear();
s.Receive(1,msg);
cout << "Participant 0 received message: " << msg.GetData() << endl;
msg.Clear();
s.Receive(2,msg);
cout << "Participant 0 received message: " << msg.GetData() << endl;
} catch (string s)
{ cerr << "Error in child (0) process." << endl
<< "Message was: " << s << endl;
return 1;
}
break; // }}}
default: // parent {{{
pid=fork();
switch (pid)
{ case -1: // Error {{{
cerr << "Error during fork!" << endl;
return 1; // }}}
case 0: // child process // {{{
try
{ vector<Channel*> link;
link.push_back(new Channel_FIFO("./ch1"));
link.push_back(new Channel_FIFO("./ch2"));
cout << "PGM: Linking as participant 1" << endl;
Session_FIFO s(link,1,3);
Message msg;
string strmsg0="P1->P0";
msg.AddData(strmsg0.c_str(),strmsg0.size()+1);
s.Send(0,msg);
cout << "Sent. " << strmsg0 << " to participant 0" << endl;
msg.Clear();
string strmsg2="P1->P2";
msg.AddData(strmsg2.c_str(),strmsg2.size()+1);
s.Send(2,msg);
cout << "Sent. " << strmsg2 << " to participant 2" << endl;
msg.Clear();
s.Receive(0,msg);
cout << "Participant 1 received message: " << msg.GetData() << endl;
msg.Clear();
s.Receive(2,msg);
cout << "Participant 1 received message: " << msg.GetData() << endl;
} catch (string s)
{ cerr << "Error in child (1) process." << endl
<< "Message was: " << s << endl;
return 1;
}
break; // }}}
default: // parent {{{
try
{ vector<Channel*> link;
link.push_back(new Channel_FIFO("./ch1"));
link.push_back(new Channel_FIFO("./ch2"));
link[0]->Unlink();
link[1]->Unlink();
Session_FIFO s(link,2,3);
Message msg;
string strmsg0="P2->P0";
msg.AddData(strmsg0.c_str(),strmsg0.size()+1);
s.Send(0,msg);
cout << "Sent. " << strmsg0 << " to participant 0" << endl;
msg.Clear();
string strmsg1="P2->P1";
msg.AddData(strmsg1.c_str(),strmsg1.size()+1);
s.Send(1,msg);
cout << "Sent. " << strmsg1 << " to participant 2" << endl;
msg.Clear();
s.Receive(0,msg);
cout << "Participant 2 received message: " << msg.GetData() << endl;
msg.Clear();
s.Receive(1,msg);
cout << "Participant 2 received message: " << msg.GetData() << endl;
delete link[0];
delete link[1];
} catch (string s)
{ cerr << "Error in parrent (2) process." << endl
<< "Message was: " << s << endl;
return 1;
}
break; // }}}
}
break; // }}}
}
return 0;
}