--Master Function
function Master(...) 

simgrid.info("Hello from lua, I'm the master")
for i,v in ipairs(arg) do
    simgrid.info("Got "..v)
end

nb_task = arg[1];
comp_size = arg[2];
comm_size = arg[3];
slave_count = arg[4]

if (#arg ~= 4) then
    error("Argc should be 4");
end
simgrid.info("Argc="..(#arg).." (should be 4)")

-- Dispatch the tasks

for i=1,nb_task do
  tk = simgrid.Task.new("Task "..i,comp_size,comm_size);
  alias = "slave "..(i%slave_count);
  simgrid.info("Master sending  '" .. simgrid.Task.name(tk) .."' To '" .. alias .."'");
  simgrid.Task.send(tk,alias); -- C user data set to NULL
  simgrid.info("Master done sending '".. simgrid.Task.name(tk) .."' To '" .. alias .."'");
end

-- Sending Finalize Message To Others

simgrid.info("Master: All tasks have been dispatched. Let's tell everybody the computation is over.");
for i=0,slave_count-1 do
  alias = "slave "..i;
  simgrid.info("Master: sending finalize to "..alias);
  simgrid.Task.send(simgrid.Task.new("finalize",0,0),alias);
end
simgrid.info("Master: Everything's done.");


end

-- Slave Function ---------------------------------------------------------
function Slave(...)

local my_mailbox="slave "..arg[1]
simgrid.info("Hello from lua, I'm a poor slave with mbox: "..my_mailbox)


while true do
--  tk = simgrid.Task.new("",0,0); --??
--  simgrid.Task.recv2(tk,my_mailbox);
  local tk = simgrid.Task.recv(my_mailbox);
  
  local tk_name = simgrid.Task.name(tk)

  if (tk_name == "finalize") then
    simgrid.info("Slave '" ..my_mailbox.."' got finalize msg");
    break
  end

  simgrid.info("Slave '" ..my_mailbox.."' processing "..simgrid.Task.name(tk))
  simgrid.Task.execute(tk);

  simgrid.info("Slave '" ..my_mailbox.."': task "..simgrid.Task.name(tk) .. " done")
end -- while

simgrid.info("Slave '" ..my_mailbox.."': I'm Done . See You !!");

end -- function ----------------------------------------------------------
--]]

function doyield() 
    coroutine.yield()
end

require "simgrid"

simgrid.platform("../../../examples/msg/small_platform.xml")
simgrid.application("../ruby/deploy.xml")
simgrid.run()
simgrid.info("Simulation's over. See you.")
simgrid.clean()