RFR: 8299915: Remove ArrayAllocatorMallocLimit and associated code
Justin King
jcking at openjdk.org
Tue Jan 10 21:33:49 UTC 2023
Remove abstraction that is a holdover from Solaris. Direct usages of `MmapArrayAllocator` have been switched to normal `malloc`. The justification is that none of the code paths are called from signal handlers, so using `mmap` directly does not make sense and is potentially slower than going through `malloc` which can potentially re-use memory without making any system calls. The remaining usages of `ArrayAllocator` and `MallocArrayAllocator` are equivalent.
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Commit messages:
- Use REALLOC_C_HEAP_ARRAY instead of NEW_C_HEAP_ARRAY/FREE_C_HEAP_ARRAY
- Remove ArrayAllocatorMallocLimit
Changes: https://git.openjdk.org/jdk/pull/11931/files
Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=11931&range=00
Issue: https://bugs.openjdk.org/browse/JDK-8299915
Stats: 336 lines in 13 files changed: 13 ins; 308 del; 15 mod
Patch: https://git.openjdk.org/jdk/pull/11931.diff
Fetch: git fetch https://git.openjdk.org/jdk pull/11931/head:pull/11931
PR: https://git.openjdk.org/jdk/pull/11931
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