ref: 5781718e4d025711c24f6db2eaea14de2d17fec9
parent: cb0b53e51979d276a22428c270c5f7eac004b7da
author: Jacob Moody <moody@posixcafe.org>
date: Tue Jan 24 13:12:52 EST 2023
Lock and filter events in D_PostEvent copied from doom
--- a/d_main.c
+++ b/d_main.c
@@ -229,11 +229,30 @@
//
//---------------------------------------------------------------------------
-void D_PostEvent(event_t *ev)
+QLock eventlock;
+
+
+//
+// D_PostEvent
+// Called by the I/O functions when input is detected
+//
+void D_PostEvent (event_t* ev)
{- events[eventhead] = *ev;
- eventhead++;
- eventhead &= (MAXEVENTS - 1);
+ int next;
+
+retry:
+ qlock(&eventlock);
+ next = (eventhead+1)&(MAXEVENTS-1);
+ if(next == eventtail){+ qunlock(&eventlock);
+ if(ev->type != ev_keydown && ev->type != ev_keyup)
+ return;
+ sleep(1);
+ goto retry;
+ }
+ events[eventhead] = *ev;
+ eventhead = next;
+ qunlock(&eventlock);
}
//---------------------------------------------------------------------------