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Merge commit '92b8c7961b433d12d9d77da5d61c26a920bbd370' into updated-rocksdb

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Torrie Fischer
2014-10-02 10:47:26 -07:00
parent 1161511207 92b8c7961b
commit 225f8ac12f
227 changed files with 13758 additions and 6538 deletions
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21
src/rocksdb2/table/table_reader.h
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@@ -18,6 +18,7 @@ class Slice;
class Arena;
struct ReadOptions;
struct TableProperties;
class GetContext;
// A Table is a sorted map from strings to strings. Tables are
// immutable and persistent. A Table may be safely accessed from
@@ -55,23 +56,17 @@ class TableReader {
// Report an approximation of how much memory has been used.
virtual size_t ApproximateMemoryUsage() const = 0;
// Calls (*result_handler)(handle_context, ...) repeatedly, starting with
// the entry found after a call to Seek(key), until result_handler returns
// false, where k is the actual internal key for a row found and v as the
// value of the key. May not make such a call if filter policy says that key
// is not present.
// Calls get_context->SaveValue() repeatedly, starting with
// the entry found after a call to Seek(key), until it returns false.
// May not make such a call if filter policy says that key is not present.
//
// mark_key_may_exist_handler needs to be called when it is configured to be
// memory only and the key is not found in the block cache, with
// the parameter to be handle_context.
// get_context->MarkKeyMayExist needs to be called when it is configured to be
// memory only and the key is not found in the block cache.
//
// readOptions is the options for the read
// key is the key to search for
virtual Status Get(
const ReadOptions& readOptions, const Slice& key, void* handle_context,
bool (*result_handler)(void* arg, const ParsedInternalKey& k,
const Slice& v),
void (*mark_key_may_exist_handler)(void* handle_context) = nullptr) = 0;
virtual Status Get(const ReadOptions& readOptions, const Slice& key,
GetContext* get_context) = 0;
};
} // namespace rocksdb