RFR: CODETOOLS-7902919: jcstress: Sysfs topology parser fails due to oddly intersecting core IDs

[Aleksey Shipilev]

The sysfs parser is still incomplete: it tries to generate synthetic core IDs when they appear to belong to different packages. In doing so, it multiplies by the number of packages -- which is incorrect, and we should multiply at least by the max number of cores per package. We might as well multiply by the number of CPUs to be on the safe side.

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Commit messages:
 - Attempt: make sure synthetic core IDs never intersect, multiply by the number of CPUs
 - Test cases

Changes: https://git.openjdk.java.net/jcstress/pull/47/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jcstress&pr=47&range=00
  Issue: https://bugs.openjdk.java.net/browse/CODETOOLS-7902919
  Stats: 381 lines in 6 files changed: 369 ins; 0 del; 12 mod
  Patch: https://git.openjdk.java.net/jcstress/pull/47.diff
  Fetch: git fetch https://git.openjdk.java.net/jcstress pull/47/head:pull/47

PR: https://git.openjdk.java.net/jcstress/pull/47