8202095: JFR TestBiasedLockRevocationEvents should cope with multiple events during a single safepoint
Reviewed-by: mgronlun, egahlin
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function bench(name, func) {
var start = Date.now();
for (var iter = 0; iter < 5000000; iter++) {
func();
}
print(name + "\t" + (Date.now() - start));
}
function uint32(value) {
return function() {
value >>> 0;
value >>> 0;
value >>> 0;
value >>> 0;
value >>> 0;
value >>> 0;
value >>> 0;
value >>> 0;
value >>> 0;
value >>> 0;
value >>> 0;
value >>> 0;
value >>> 0;
value >>> 0;
value >>> 0;
};
}
function int32(value) {
return function() {
value >> 0;
value >> 0;
value >> 0;
value >> 0;
value >> 0;
value >> 0;
value >> 0;
value >> 0;
value >> 0;
value >> 0;
value >> 0;
value >> 0;
value >> 0;
value >> 0;
value >> 0;
};
}
print("\nToUint32");
for (var i = 1; i < 3; i++) {
bench("infinity ", uint32(Infinity));
bench("infinity neg ", uint32(-Infinity));
bench("nan ", uint32(NaN));
bench("small ", uint32(1));
bench("small neg ", uint32(-1));
bench("small frac ", uint32(1.5));
bench("small neg frac", uint32(-1.5));
bench("large ", uint32(9223372036854775807));
bench("large neg ", uint32(-9223372036854775808));
}
print("\nToInt32");
for (var i = 1; i < 3; i++) {
bench("infinity ", int32(Infinity));
bench("infinity neg ", int32(-Infinity));
bench("nan ", int32(NaN));
bench("small ", int32(1));
bench("small neg ", int32(-1));
bench("small frac ", int32(1.5));
bench("small neg frac", int32(-1.5));
bench("large ", int32(9223372036854775807));
bench("large neg ", int32(-9223372036854775808));
}