| ... | ... | @@ -75,20 +75,28 @@ test "cmpxchg with ptr" { |
| 75 | 75 | } |
| 76 | 76 | |
| 77 | 77 | test "128-bit cmpxchg" { |
| 78 | | var x: u128 = 1234; |
| 79 | | if (@cmpxchgWeak(u128, &x, 99, 5678, .SeqCst, .SeqCst)) |x1| { |
| 80 | | try expect(x1 == 1234); |
| 81 | | } else { |
| 82 | | @panic("cmpxchg should have failed"); |
| 83 | | } |
| 84 | | |
| 85 | | while (@cmpxchgWeak(u128, &x, 1234, 5678, .SeqCst, .SeqCst)) |x1| { |
| 86 | | try expect(x1 == 1234); |
| 87 | | } |
| 88 | | try expect(x == 5678); |
| 89 | | |
| 90 | | try expect(@cmpxchgStrong(u128, &x, 5678, 42, .SeqCst, .SeqCst) == null); |
| 91 | | try expect(x == 42); |
| 78 | try test_u128_cmpxchg(); |
| 79 | comptime try test_u128_cmpxchg(); |
| 80 | } |
| 81 | |
| 82 | fn test_u128_cmpxchg() !void { |
| 83 | if (std.Target.current.cpu.arch != .x86_64) return error.SkipZigTest; |
| 84 | if (comptime !std.Target.x86.featureSetHas(std.Target.current.cpu.features, .cx16)) return error.SkipZigTest; |
| 85 | |
| 86 | var x: u128 = 1234; |
| 87 | if (@cmpxchgWeak(u128, &x, 99, 5678, .SeqCst, .SeqCst)) |x1| { |
| 88 | try expect(x1 == 1234); |
| 89 | } else { |
| 90 | @panic("cmpxchg should have failed"); |
| 91 | } |
| 92 | |
| 93 | while (@cmpxchgWeak(u128, &x, 1234, 5678, .SeqCst, .SeqCst)) |x1| { |
| 94 | try expect(x1 == 1234); |
| 95 | } |
| 96 | try expect(x == 5678); |
| 97 | |
| 98 | try expect(@cmpxchgStrong(u128, &x, 5678, 42, .SeqCst, .SeqCst) == null); |
| 99 | try expect(x == 42); |
| 92 | 100 | } |
| 93 | 101 | |
| 94 | 102 | test "cmpxchg with ignored result" { |
FnControlOption <fncontroloption@noreply.codeberg.org> 2021-08-08 09:21:30-07:00
test