Encode a suitable internal key target for "target" and return it. Uses *scratch as scratch space, and the returned pointer will point into this scratc

get one file's level and inputs by one file number

Copy "len" bytes from "src" to "op", one byte at a time. Used for handling COPY operations where the input and output regions may overlap. For examp

db reject this write, user should slow write

Return the current manifest file number

Returns an estimate of the total memory usage of data allocated by the arena (including space allocated but not yet used for user allocations).

Returns true iff some level needs a compaction.

No-barrier variants that can be safely used in a few locations.

Restart manifest

This function accepts an array of bytes as the next portion of the message.

According to the standard, the message must be padded to an even 512 bits. The first padding bit must be a '1'. The last 64 bits represent the lengt

Initialize the SHA1Context in preparation for computing a new message digest.

This function will return the 160-bit message digest into the Message_Digest array within the SHA1Context provided

If you know the internal layout of the std::string in use, you can replace this function with one that resizes the string without filling the new spac