RFR: 7903750: TimeBudget (-tb) does not fulfill its promisses [v5]

[Jiří Vaněk]

> Added warning, when time budget is to small, and final run will run at least two times longer.

Jiří Vaněk has updated the pull request incrementally with one additional commit since the last revision:

  Removed unnecesasary NPE check in getTimeBudget
  
  The NPE workaround was causing NPE to be only delayed for later

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Changes:
  - all: https://git.openjdk.org/jcstress/pull/161/files
  - new: https://git.openjdk.org/jcstress/pull/161/files/3d002c0d..8e42d2a4

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jcstress&pr=161&range=04
 - incr: https://webrevs.openjdk.org/?repo=jcstress&pr=161&range=03-04

  Stats: 3 lines in 1 file changed: 0 ins; 3 del; 0 mod
  Patch: https://git.openjdk.org/jcstress/pull/161.diff
  Fetch: git fetch https://git.openjdk.org/jcstress.git pull/161/head:pull/161

PR: https://git.openjdk.org/jcstress/pull/161