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wallet: Clean up spent UTXOs once they are buried deeply enough

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Signed-off-by: Christian Decker <decker.christian@gmail.com>
This commit is contained in:
Christian Decker
2018-03-04 03:42:19 +01:00
parent 8958a082ec
commit aba3d5f34d
1 changed files with 17 additions and 0 deletions
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17
wallet/wallet.c
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@@ -15,6 +15,9 @@
#define SQLITE_MAX_UINT 0x7FFFFFFFFFFFFFFF
#define DIRECTION_INCOMING 0
#define DIRECTION_OUTGOING 1
/* How many blocks must a UTXO entry be buried under to be considered old enough
* to prune? */
#define UTXO_PRUNE_DEPTH 144
static void outpointfilters_init(struct wallet *w)
{
@@ -1761,6 +1764,17 @@ bool wallet_network_check(struct wallet *w,
return true;
}
/**
* wallet_utxoset_prune -- Remove spent UTXO entries that are old
*/
static void wallet_utxoset_prune(struct wallet *w, const u32 blockheight)
{
sqlite3_stmt *stmt;
stmt = db_prepare(w->db, "DELETE FROM utxoset WHERE spendheight < ?");
sqlite3_bind_int(stmt, 1, blockheight - UTXO_PRUNE_DEPTH);
db_exec_prepared(w->db, stmt);
}
void wallet_block_add(struct wallet *w, struct block *b)
{
sqlite3_stmt *stmt = db_prepare(w->db,
@@ -1775,6 +1789,9 @@ void wallet_block_add(struct wallet *w, struct block *b)
sqlite3_bind_null(stmt, 3);
}
db_exec_prepared(w->db, stmt);
/* Now cleanup UTXOs that we don't care about anymore */
wallet_utxoset_prune(w, b->height);
}
void wallet_block_remove(struct wallet *w, struct block *b)