TempleOSTS_130315.ISO

TempleOS/Demo/MultiCore/Lock.CPP

@@ -0,0 +1,64 @@
+/*
+  lock{} is a compiler statement
+  which places asm LOCK instruction
+  prefixes on code.  Only use it on
+  read-modify-write statements.
+  It will generate invalid instructions
+  if you misuse it and it will crash.
+  $LK,"U","MN:U"$() to see what code was generated.
+*/
+
+#define CNT	0x1000000
+
+I64 glbl;
+
+
+U0 MPUnlockedInc(I64)
+{
+  I64 i;
+  for (i=0;i<CNT;i++)
+    glbl++;
+}
+
+U0 UnlockedInc()
+{
+  I64 i;
+  CMPCmd *tempm;
+  glbl=0;
+
+  tempm=MPJob(&MPUnlockedInc,NULL,1,0);
+  for (i=0;i<CNT;i++)
+    glbl++;
+
+  MPJobResult(tempm);
+  "Correct Cnt:%X Actual Cnt:%X\n",CNT*2,glbl;
+}
+
+
+
+U0 MPLockedInc(I64)
+{
+  I64 i;
+  for (i=0;i<CNT;i++)
+    lock  //Can be used without {}
+      glbl++;
+}
+
+U0 LockedInc()
+{
+  I64 i;
+  CMPCmd *tempm;
+  glbl=0;
+
+  tempm=MPJob(&MPLockedInc,NULL,1,0);
+  for (i=0;i<CNT;i++)
+    lock {
+      glbl++;
+    }
+
+  MPJobResult(tempm);
+  "Correct Cnt:%X Actual Cnt:%X\n",CNT*2,glbl;
+}
+
+UnlockedInc;
+LockedInc;