LevelDB_KV_Sep

作者：韩晨旭@ArcueidType(Arcueid) 10225101440 李畅@wesley 10225102463 设计文档为PLAN.md，md版本报告为README.md，pdf版本报告为Report.pdf

История

cmumford ce399ac28a Always copy bytes to scratch buffer when reading w/MemEnv. FileState::Read (used by InMemoryEnv) creates a new Slice when reading. If all the bytes for the read are in the first block then the Slice points to the private block data in FileState and is not copied to the \|scratch\| buffer. A recent change allows files in InMemEnv to be overwritten which deletes these blocks and in this case can result in a Slice having a dangling pointer. This change fixes this bug by always copying to the \|scratch\| buffer. ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=239301930		5 лет назад
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memenv	Always copy bytes to scratch buffer when reading w/MemEnv.	删除	5 лет назад

cmumford ce399ac28a Always copy bytes to scratch buffer when reading w/MemEnv.

FileState::Read (used by InMemoryEnv) creates a new Slice when reading.
If all the bytes for the read are in the first block then the Slice
points to the private block data in FileState and is not copied to the
|scratch| buffer.

A recent change allows files in InMemEnv to be overwritten which deletes
these blocks and in this case can result in a Slice having a dangling
pointer. This change fixes this bug by always copying to the |scratch|
buffer.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=239301930