LevelDB-course-Lab

小组成员：10215300402-朱维清 & 10222140408 谷杰

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		před 5 roky
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memenv	Always copy bytes to scratch buffer when reading w/MemEnv.	删除	před 5 roky

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

před 5 roky

memenv

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

删除

před 5 roky