Prefix ID, NOID, ID2, IDL, ID2L with 'MDB_'.
Also drop bdb from file description.

Put one call in #if MDB_DEBUG. Move DPRINTF(Using meta page #) there.

Define MDB_FDATASYNC() instead of redefining fdatasync().

If the database is opened with MDB_RDONLY or MDB_NOSYNC,
instead use the same file descriptor for me_mfd and me_fd.

Also factor out Windows/Unix error handling after open.

Get txn->mt_txnid from the meta page instead.  Otherwise it
and txn->mt_toggle could become inconsistent, since read-only
txns fetched both from MDB_txbody without mutex proteciton.

Make DPRINTF usable in if-else.  Silence signed vs unsigned warning.

Howard Chu authored 12 years ago and Quanah Gibson-Mount committed 12 years ago

Also add mdb_debug/mdb_debug_start to toggle debug output at runtime

Howard Chu authored 12 years ago and Quanah Gibson-Mount committed 12 years ago

Was being fooled before because the newly malloc'd block had
the same address as the previously freed block.

Also add mdb_debug/mdb_debug_start to toggle debug output at runtime

Was being fooled before because the newly malloc'd block had
the same address as the previously freed block.