658 |
|
LONG_DELAY_MS = SHORT_DELAY_MS * 200; |
659 |
|
} |
660 |
|
|
661 |
+ |
private static final long TIMEOUT_DELAY_MS |
662 |
+ |
= (long) (12.0 * Math.cbrt(delayFactor)); |
663 |
+ |
|
664 |
|
/** |
665 |
< |
* Returns a timeout in milliseconds to be used in tests that |
666 |
< |
* verify that operations block or time out. |
665 |
> |
* Returns a timeout in milliseconds to be used in tests that verify |
666 |
> |
* that operations block or time out. We want this to be longer |
667 |
> |
* than the OS scheduling quantum, but not too long, so don't scale |
668 |
> |
* linearly with delayFactor; we use "crazy" cube root instead. |
669 |
|
*/ |
670 |
< |
long timeoutMillis() { |
671 |
< |
return SHORT_DELAY_MS / 4; |
670 |
> |
static long timeoutMillis() { |
671 |
> |
return TIMEOUT_DELAY_MS; |
672 |
|
} |
673 |
|
|
674 |
|
/** |
1063 |
|
} |
1064 |
|
|
1065 |
|
/** |
1066 |
+ |
* Checks that thread eventually enters the expected blocked thread state. |
1067 |
+ |
*/ |
1068 |
+ |
void assertThreadBlocks(Thread thread, Thread.State expected) { |
1069 |
+ |
// always sleep at least 1 ms, avoiding transitional states |
1070 |
+ |
// with high probability |
1071 |
+ |
for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) { |
1072 |
+ |
try { delay(1); } |
1073 |
+ |
catch (InterruptedException fail) { |
1074 |
+ |
fail("Unexpected InterruptedException"); |
1075 |
+ |
} |
1076 |
+ |
Thread.State s = thread.getState(); |
1077 |
+ |
if (s == expected) |
1078 |
+ |
return; |
1079 |
+ |
else if (s == Thread.State.TERMINATED) |
1080 |
+ |
fail("Unexpected thread termination"); |
1081 |
+ |
} |
1082 |
+ |
fail("timed out waiting for thread to enter thread state " + expected); |
1083 |
+ |
} |
1084 |
+ |
|
1085 |
+ |
/** |
1086 |
|
* Checks that thread does not terminate within the default |
1087 |
|
* millisecond delay of {@code timeoutMillis()}. |
1088 |
|
*/ |