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| author | Hallvard Furuseth <hallvard@openldap.org> | 2016-12-07 19:06:11 +0100 |
|---|---|---|
| committer | Hallvard Furuseth <hallvard@openldap.org> | 2016-12-07 19:06:11 +0100 |
| commit | ef066598b5e4c0eaab29c858451569439cb6b5d6 (patch) | |
| tree | fbe75f9f9ac0417e4a230373e7e05aaf7f08aff0 | |
| parent | 3dda2bfa4a33e7f22ab92dafc501411c90647e16 (diff) | |
| download | lmdb-ef066598b5e4c0eaab29c858451569439cb6b5d6.tar.gz lmdb-ef066598b5e4c0eaab29c858451569439cb6b5d6.tar.bz2 lmdb-ef066598b5e4c0eaab29c858451569439cb6b5d6.zip | |
MDB_CP_COMPACT comments
| -rw-r--r-- | libraries/liblmdb/mdb.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c index e43e8dc..b057829 100644 --- a/libraries/liblmdb/mdb.c +++ b/libraries/liblmdb/mdb.c @@ -9765,7 +9765,10 @@ typedef struct mdb_copy { HANDLE mc_fd; int mc_toggle; /**< Buffer number in provider */ int mc_new; /**< (0-2 buffers to write) | (#MDB_EOF at end) */ - volatile int mc_error; /**< Error code, never cleared if set */ + /** Error code. Never cleared if set. Both threads can set nonzero + * to fail the copy. Not mutex-protected, LMDB expects atomic int. + */ + volatile int mc_error; } mdb_copy; /** Dedicated writer thread for compacting copy. */ @@ -9850,7 +9853,11 @@ mdb_env_cthr_toggle(mdb_copy *my, int adjust) return my->mc_error; } - /** Depth-first tree traversal for compacting copy. */ + /** Depth-first tree traversal for compacting copy. + * @param[in] my control structure. + * @param[in,out] pg database root. + * @param[in] flags includes #F_DUPDATA if it is a sorted-duplicate sub-DB. + */ static int ESECT mdb_env_cwalk(mdb_copy *my, pgno_t *pg, int flags) { |