mdb_copy Struct Reference
[LMDB Internals]

Data Fields
MDB_env *	mc_env
MDB_txn *	mc_txn
pthread_mutex_t	mc_mutex
pthread_cond_t	mc_cond
char *	mc_wbuf [2]
char *	mc_over [2]
int	mc_wlen [2]
int	mc_olen [2]
pgno_t	mc_next_pgno
HANDLE	mc_fd
int	mc_toggle
int	mc_new
volatile int	mc_error

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Detailed Description

State needed for a double-buffering compacting copy.

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Field Documentation

pthread_cond_t mdb_copy::mc_cond

Condition variable for mc_new

int mdb_copy::mc_toggle

Buffer number in provider

int mdb_copy::mc_new

(0-2 buffers to write) | (MDB_EOF at end)

volatile int mdb_copy::mc_error

Error code. Never cleared if set. Both threads can set nonzero to fail the copy. Not mutex-protected, LMDB expects atomic int.

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The documentation for this struct was generated from the following file:

• mdb.c