X-Git-Url: https://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Ftdb2%2Fprivate.h;h=6e9936f53b92a91c5993049f7335036405af3455;hp=387e49f61182af8fe33028840ebc3be073fea70a;hb=20defbbcfa088a7574d9897b533d1bc600b2df53;hpb=dfae76fd82d4bbd8989264dadc2c3c9cde7e5af7 diff --git a/ccan/tdb2/private.h b/ccan/tdb2/private.h index 387e49f6..6e9936f5 100644 --- a/ccan/tdb2/private.h +++ b/ccan/tdb2/private.h @@ -92,8 +92,8 @@ typedef uint64_t tdb_off_t; /* And 8 entries in each group, ie 8 groups per sublevel. */ #define TDB_HASH_GROUP_BITS 3 -/* Extend file by least 32 times larger than needed. */ -#define TDB_EXTENSION_FACTOR 32 +/* Extend file by least 100 times larger than needed. */ +#define TDB_EXTENSION_FACTOR 100 /* We steal bits from the offsets to store hash info. */ #define TDB_OFF_HASH_GROUP_MASK ((1ULL << TDB_HASH_GROUP_BITS) - 1) @@ -173,20 +173,30 @@ static inline uint16_t rec_magic(const struct tdb_used_record *r) } struct tdb_free_record { - uint64_t magic_and_meta; /* TDB_OFF_UPPER_STEAL bits of magic */ - uint64_t data_len; /* Not counting these two fields. */ - /* This is why the minimum record size is 16 bytes. */ - uint64_t next, prev; + uint64_t magic_and_prev; /* TDB_OFF_UPPER_STEAL bits magic, then prev */ + uint64_t flist_and_len; /* Len not counting these two fields. */ + /* This is why the minimum record size is 8 bytes. */ + uint64_t next; }; +static inline uint64_t frec_prev(const struct tdb_free_record *f) +{ + return f->magic_and_prev & ((1ULL << (64 - TDB_OFF_UPPER_STEAL)) - 1); +} + static inline uint64_t frec_magic(const struct tdb_free_record *f) { - return f->magic_and_meta >> (64 - TDB_OFF_UPPER_STEAL); + return f->magic_and_prev >> (64 - TDB_OFF_UPPER_STEAL); +} + +static inline uint64_t frec_len(const struct tdb_free_record *f) +{ + return f->flist_and_len & ((1ULL << (64 - TDB_OFF_UPPER_STEAL))-1); } -static inline uint64_t frec_flist(const struct tdb_free_record *f) +static inline unsigned frec_flist(const struct tdb_free_record *f) { - return f->magic_and_meta & ((1ULL << (64 - TDB_OFF_UPPER_STEAL)) - 1); + return f->flist_and_len >> (64 - TDB_OFF_UPPER_STEAL); } struct tdb_recovery_record { @@ -311,6 +321,7 @@ struct tdb_context { /* What freelist are we using? */ uint64_t flist_off; + unsigned int flist; /* IO methods: changes for transactions. */ const struct tdb_methods *methods;