[jdk16] RFR: 8259032: MappedMemorySegmentImpl#makeMappedSegment() ignores Unmapper#pagePosition
mcimadamore at openjdk.java.net
Tue Jan 5 15:39:01 UTC 2021
this patch fixes an oversight where the address() method in FileChannelImpl.Unmapper does not take into account the value of `pagePosition` - this leads to a situation in which, effectively, the specified offset when mapping the segment is ignored by the runtime (because base address will always be aligned to some known quantity - which is OS/platform dependent).
To test this I had to break open into FileChannelImpl and ready the granularity.
- Fix issue in Unmapper implementation not including `pagePosition` in address computation
Stats: 32 lines in 2 files changed: 30 ins; 0 del; 2 mod
Fetch: git fetch https://git.openjdk.java.net/jdk16 pull/84/head:pull/84
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