RFR: 8351640: Print reason for making method not entrant

[Aleksey Shipilev]

A simple quality of life improvement. We are studying compiler dynamics in Leyden, and it would be convenient to know why the particular methods are marked as not entrant. We just need to pass the extra string argument to `nmethod::make_not_entrant` and print it out. 

Sample log excerpt for mainline:


$ grep com.sun.tools.javac.util.IntHashTable::lookup print-compilation.log 
987   780       3       com.sun.tools.javac.util.IntHashTable::lookup (100 bytes)
1019  877       4       com.sun.tools.javac.util.IntHashTable::lookup (100 bytes)
1024  780       3       com.sun.tools.javac.util.IntHashTable::lookup (100 bytes)   made not entrant: not used
4995  877       4       com.sun.tools.javac.util.IntHashTable::lookup (100 bytes)   made not entrant: uncommon trap
5287 3734       3       com.sun.tools.javac.util.IntHashTable::lookup (100 bytes)
6615 5472       4       com.sun.tools.javac.util.IntHashTable::lookup (100 bytes)
6626 3734       3       com.sun.tools.javac.util.IntHashTable::lookup (100 bytes)   made not entrant: not used


You can now clearly see the method lifecycle. 1 second in app lifetime, the method was initially compiled at level 3. Shortly after, it got compiled at level 4, turning level 3 method unused. 4 seconds later, level 4 method encountered uncommon trap, so we are back to level 3. After 1.3 seconds more, the final compilation at level 4 completed, and second level 3 compilation was removed as unused.

Additional testing:
 - [x] Linux x86_64 server fastdebug, `hotspot:tier1`

-------------

Commit messages:
 - Use resource allocation for temp buffer
 - Base version

Changes: https://git.openjdk.org/jdk/pull/23980/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23980&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8351640
  Stats: 36 lines in 14 files changed: 8 ins; 0 del; 28 mod
  Patch: https://git.openjdk.org/jdk/pull/23980.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23980/head:pull/23980

PR: https://git.openjdk.org/jdk/pull/23980