made events specific to processes

there also needs pending events for the kernel just in case if we ever
need them, but now i'm not sure if it's required

halyde/kernel/modules/evmgr.lua

@@ -10,7 +10,7 @@ local process
 
 function module.init()
   _G.evmgr = {}
-  _G.evmgr.eventQueue = {}
+  _G.evmgr.eventQueue = { kernel = {} }
   local maxEventQueueLength = 10 -- increase if events start getting dropped
 
   local computer = require("computer")
@@ -31,11 +31,14 @@ function module.init()
 
   _, process = _PUBLIC.tsched.addTask(function()
     while true do
+      -- check for events
       local args
       repeat
         args = { computer.uptime(), computer.pullSignal(0) }
         if args and args[2] then
-          table.insert(evmgr.eventQueue, args)
+          for pid in pairs(evmgr.eventQueue) do
+            table.insert(evmgr.eventQueue[pid], args)
+          end
           if _PUBLIC.keyboard then
             if args[2] == "key_down" then
               local keycode = args[5]
@@ -64,13 +67,16 @@ function module.init()
               end
             end
           end
-          while #evmgr.eventQueue > maxEventQueueLength do
+          for pid in pairs(evmgr.eventQueue) do
+            while #evmgr.eventQueue[pid] > maxEventQueueLength do
               --ocelot.log("Queue length breach, removing first signal")
-            table.remove(evmgr.eventQueue, 1)
+              table.remove(evmgr.eventQueue[pid], 1)
+            end
           end
         end
       until not args or not args[1]
-      --ocelot.log("done")
+      -- TODO: check for processes that have ended
+      -- run other tasks
       coroutine.yield()
     end
   end, "evmgr")

lib/event.lua

@@ -5,7 +5,12 @@ local bufferTime = 0.1 -- A little bit of buffer time so events won't be skipped
 
 --local ocelot = component.proxy(component.list("ocelot")())
 function event.pull(...)
-  local args = {...}
+  local pid = _PUBLIC.tsched and _PUBLIC.tsched.getCurrentTask() and _PUBLIC.tsched.getCurrentTask().id or "kernel"
+  if not evmgr.eventQueue[pid] then
+    evmgr.eventQueue[pid] = {}
+  end
+  local eventQueue = evmgr.eventQueue[pid]
+  local args = { ... }
   local evtypes, timeout = {}, nil
 
   for _, arg in pairs(args) do
@@ -20,23 +25,23 @@ function event.pull(...)
 
   while true do
     -- Check event queue for matching event
-    for i = 1, #evmgr.eventQueue do
+    for i = 1, #eventQueue do
       local foundevent = false
       if evtypes[1] then -- event type(s) specified
         for _, evtype in pairs(evtypes) do
-          if evmgr.eventQueue[i][2] == evtype and evmgr.eventQueue[i][1] >= startTime - bufferTime then
+          if eventQueue[i][2] == evtype and eventQueue[i][1] >= startTime - bufferTime then
             foundevent = true
           end
         end
       else
-        if evmgr.eventQueue[i][1] >= startTime - bufferTime then
+        if eventQueue[i][1] >= startTime - bufferTime then
           foundevent = true
         end
       end
       if foundevent then
         -- Found matching event (or any event if no type specified)
-        local result = table.copy(evmgr.eventQueue[i])
-        table.remove(evmgr.eventQueue, i)
+        local result = table.copy(eventQueue[i])
+        table.remove(eventQueue, i)
         table.remove(result, 1) -- remove the time of event argument
         return table.unpack(result)
       end
@@ -50,6 +55,8 @@ function event.pull(...)
     -- Yield to allow other processes to run and more events to be added
     if timeout and timeout > 0 then
       coroutine.yield()
+    elseif not timeout then
+      coroutine.yield()
     end
   end
 end