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Added flags to the put function.

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This commit is contained in:
Phillip Toland 2008-12-10 16:04:34 -06:00
parent eab107df7a
commit 7ec347c73e
2 changed files with 27 additions and 18 deletions
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21
c_src/bdberl_drv.c
View file

@ -80,8 +80,9 @@ static hive_hash* G_DATABASES_NAMES;
#define WRITE_UNLOCK(L) erl_drv_rwlock_rwunlock(L)
#define DECODE_BYTE(_buf, _off) (_buf[_off])
#define DECODE_INT(_buf, _off) (*((int*)_buf+_off))
#define DECODE_STRING(_buf, _off) (char*)(_buf+_off)
#define DECODE_INT(_buf, _off) *((int*)(_buf+(_off)))
#define DECODE_STRING(_buf, _off) (char*)(_buf+(_off))
#define DECODE_BLOB(_buf, _off) (void*)(_buf+(_off))
#define RETURN_BH(bh, outbuf) *outbuf = (char*)bh.bin; return bh.bin->orig_size;
@ -585,8 +586,11 @@ static int close_database(int dbref, unsigned flags, PortData* data)
static void do_async_put(void* arg)
{
printf("do_async_put\n");
// Payload is: <<DbRef:32, Flags:32, KeyLen:32, Key:KeyLen, ValLen:32, Val:ValLen>>
AsyncData* adata = (AsyncData*)arg;
unsigned flags = DECODE_INT(adata->payload, 4);
// Setup DBTs
DBT key;
DBT value;
@ -594,16 +598,15 @@ static void do_async_put(void* arg)
memset(&value, '\0', sizeof(DBT));
// Parse payload into DBTs
// Payload is: << DbRef:32, KeyLen:32, Key:KeyLen, ValLen:32, Val:ValLen>>
key.size = *((int*)(adata->payload + 4));
key.data = (void*)(adata->payload + 8);
value.size = *((int*)(adata->payload + 8 + key.size));
value.data = (void*)(adata->payload + 8 + key.size + 4);
key.size = DECODE_INT(adata->payload, 8);
key.data = DECODE_BLOB(adata->payload, 12);
value.size = DECODE_INT(adata->payload, 12 + key.size);
value.data = DECODE_BLOB(adata->payload, 12 + key.size + 4);
// Execute the actual put -- we'll process the result back in the driver_async_ready function
// All databases are opened with AUTO_COMMIT, so if msg->port->txn is NULL, the put will still
// be atomic
adata->rc = adata->db->put(adata->db, adata->port->txn, &key, &value, 0);
adata->rc = adata->db->put(adata->db, adata->port->txn, &key, &value, flags);
}
static void do_async_put_free(void* arg)

24
src/bdberl_port.erl
View file

@ -10,7 +10,7 @@
open_database/3, open_database/4,
close_database/2,
txn_begin/1, txn_commit/1, txn_abort/1,
put/4,
put/4, put/5,
get/3]).
-define(CMD_NONE, 0).
@ -36,7 +36,10 @@
-define(DB_THREAD, 16#00000004).
-define(DB_TRUNCATE, 16#00008000).
-define(DB_NOSYNC, 21).
-define(DB_APPEND, 2).
-define(DB_NODUPDATA, 19).
-define(DB_NOOVERWRITE, 20).
-define(DB_NOSYNC, 21).
-define(STATUS_OK, 0).
-define(STATUS_ERROR, 1).
@ -119,11 +122,14 @@ txn_abort(Port) ->
?ERROR_NO_TXN -> {error, no_txn}
end.
put(Port, DbRef, Key, Value) ->
put(Port, DbRef, Key, Value, []).
put(Port, DbRef, Key, Value, Opts) ->
{KeyLen, KeyBin} = to_binary(Key),
{ValLen, ValBin} = to_binary(Value),
Cmd = <<DbRef:32/native, KeyLen:32/native, KeyBin/bytes, ValLen:32/native, ValBin/bytes>>,
Flags = process_flags(Opts),
Cmd = <<DbRef:32/native, Flags:32/unsigned-native, KeyLen:32/native, KeyBin/bytes, ValLen:32/native, ValBin/bytes>>,
<<Result:32/native>> = erlang:port_control(Port, ?CMD_PUT, Cmd),
case Result of
?ERROR_NONE ->
@ -150,27 +156,27 @@ get(Port, DbRef, Key) ->
?ERROR_ASYNC_PENDING -> {error, async_pending};
?ERROR_INVALID_DBREF -> {error, invalid_dbref}
end.
to_binary(Term) ->
Bin = term_to_binary(Term),
{size(Bin), Bin}.
process_flags([Flag]) ->
flag_value(Flag);
process_flags([]) ->
0;
process_flags([Flag|Flags]) ->
flag_value(Flag) bor process_flags(Flags).
flag_value(Flag) ->
case Flag of
append -> ?DB_APPEND;
auto_commit -> ?DB_AUTO_COMMIT;
create -> ?DB_CREATE;
exclusive -> ?DB_EXCL;
multiversion -> ?DB_MULTIVERSION;
no_duplicate -> ?DB_NODUPDATA;
no_mmap -> ?DB_NOMMAP;
no_overwrite -> ?DB_NOOVERWRITE;
no_sync -> ?DB_NOSYNC;
readonly -> ?DB_RDONLY;
threaded -> ?DB_THREAD;