FYI: 8244193: Remove nextDrawableCount and lock RQ only during the blit op…

[Jayathirth D V]

…eration

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Commit messages:
 - 8244193: Remove nextDrawableCount and lock RQ only during the blit operation

Changes: https://git.openjdk.java.net/lanai/pull/41/files
 Webrev: https://webrevs.openjdk.java.net/lanai/41/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8244193
  Stats: 78 lines in 2 files changed: 38 ins; 32 del; 8 mod
  Patch: https://git.openjdk.java.net/lanai/pull/41.diff
  Fetch: git fetch https://git.openjdk.java.net/lanai pull/41/head:pull/41

PR: https://git.openjdk.java.net/lanai/pull/41