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More MDB_node doc

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Hallvard Furuseth 2016-12-21 21:40:14 +01:00
parent a4976c12e5
commit 9db2b6e128
1 changed files with 5 additions and 0 deletions
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libraries/liblmdb/mdb.c
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@ -879,6 +879,11 @@ typedef struct MDB_page {
* pgno on branch nodes. On 64 bit platforms, #mn_flags is also used
* for pgno. (Branch nodes have no flags). Lo and hi are in host byte
* order in case some accesses can be optimized to 32-bit word access.
*
* Leaf node flags describe node contents. #F_BIGDATA says the node's
* data part is the page number of an overflow page with actual data.
* #F_DUPDATA and #F_SUBDATA can be combined giving duplicate data in
* a sub-page/sub-database, and named databases (just #F_SUBDATA).
*/
typedef struct MDB_node {
/** part of data size or pgno