Files
TempleOS-Rijn/Demo/MultiCore/Lock.CPP
T
2018-09-08 21:46:09 +02:00

53 lines
952 B
C++

/*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.
$LK,"U",A="MN:U"$() 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()
{
CSrvCmd *tempm0,*tempm1;
glbl=0;
tempm0=JobQue(&MPUnlockedInc,NULL,0,0);
tempm1=JobQue(&MPUnlockedInc,NULL,1,0);
GetResult(tempm0);
GetResult(tempm1);
"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()
{
CSrvCmd *tempm0,*tempm1;
glbl=0;
tempm0=JobQue(&MPLockedInc,NULL,0,0);
tempm1=JobQue(&MPLockedInc,NULL,1,0);
GetResult(tempm0);
GetResult(tempm1);
"Correct Cnt:%X Actual Cnt:%X\n",CNT*2,glbl;
}
UnlockedInc;
LockedInc;