Decrypt one or more (partial) blocks of data at the file offset. Length of data is given in dataSize.

Encrypt one or more (partial) blocks of data at the file offset. Length of data is given in dataSize.

Constructs and returns the message for an equality assertion (e.g. ASSERT_EQ, EXPECT_STREQ, etc) failure. The first four parameters are the expressio

Note: memory_order_release must be sufficient

Returns an indented copy of stderr output for a death test. This makes distinguishing death test output lines from regular log lines much easier.

Return pair <parent directory name, file name> of a full path.

Returns the edits area that is needed for flushing the memtable

Returns the number of calls to TransactionDBInsert/OptimisticTransactionDBInsert/DBInsert that did not write any data.

Returns the sequence number of the first element that was inserted into the memtable. REQUIRES: external synchronization to prevent simultaneous opera

Get value type from the internal key

Returns the message describing the last system error in errno.

thread-safe

Gets the i-th test case among all the test cases. i can range from 0 to total_test_case_count() - 1. If i is not in that range, returns NULL.

Returns the i-th test among all the tests. i can range from 0 to total_test_count() - 1. If i is not in that range, returns NULL.

Parses the environment variable var as an Int32. If it is unset, returns default_val. If it is not an Int32, prints an error and aborts.

if the block handle's offset and size are both "0", we will view it as a null block handle that points to no where.

把 f 的RangeTombstoneIterator创建出来并加入到range_del_iter_vec中，对map sst 则对其dependence进行递归加入

更新FileMetaDataBoundBuilder上下边界， 普通文件直接加入ranges， map sst 对每一条kv创建一个map element 加入ranges

Make a key that i determines the first 4 characters and j determines the last 4 characters.

Multiple two operands. If they overflow, return op1.

EXPERIMENTAL Return whether the output file should be further compacted

create block cache