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Added bdberl:driver_info() function to get driver parameters.

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This commit is contained in:
Jon Meredith 2009-06-10 14:18:26 -06:00 committed by Phillip Toland
parent 1cc42dae71
commit 13240670c3
6 changed files with 113 additions and 2 deletions
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69
c_src/bdberl_drv.c
View file

@ -82,6 +82,7 @@ static void do_async_txnop(void* arg);
static void do_async_cursor_get(void* arg);
static void do_async_truncate(void* arg);
static void do_sync_data_dirs_info(PortData *p);
static void do_sync_driver_info(PortData *d);
static int send_dir_info(ErlDrvPort port, ErlDrvTermData pid, const char *path);
@ -906,7 +907,6 @@ static int bdberl_drv_control(ErlDrvData handle, unsigned int cmd,
// Outbuf is: <<0:32>>
RETURN_INT(0, outbuf);
}
case CMD_LOG_DIR_INFO:
{
FAIL_IF_ASYNC_PENDING(d, outbuf);
@ -933,8 +933,16 @@ static int bdberl_drv_control(ErlDrvData handle, unsigned int cmd,
// Outbuf is: <<0:32>>
RETURN_INT(0, outbuf);
}
case CMD_DRIVER_INFO:
{
FAIL_IF_ASYNC_PENDING(d, outbuf);
do_sync_driver_info(d);
// Let caller know that the operation is in progress
// Outbuf is: <<0:32>>
RETURN_INT(0, outbuf);
}
}
*outbuf = 0;
return 0;
@ -1776,6 +1784,63 @@ static void do_sync_data_dirs_info(PortData *d)
}
// Send bdberl specific driver info
static void do_sync_driver_info(PortData *d)
{
unsigned int txn_pending;
unsigned int txn_active;
unsigned int general_pending;
unsigned int general_active;
bdberl_tpool_job_count(G_TPOOL_GENERAL, &general_pending, &general_active);
bdberl_tpool_job_count(G_TPOOL_TXNS, &txn_pending, &txn_active);
ErlDrvPort port = d->port;
ErlDrvTermData pid = d->port_owner;
ErlDrvTermData response[] = {
ERL_DRV_ATOM, driver_mk_atom("ok"),
// Start of list
ERL_DRV_ATOM, driver_mk_atom("databases_size"),
ERL_DRV_UINT, G_DATABASES_SIZE,
ERL_DRV_TUPLE, 2,
ERL_DRV_ATOM, driver_mk_atom("deadlock_interval"),
ERL_DRV_UINT, G_DEADLOCK_CHECK_INTERVAL,
ERL_DRV_TUPLE, 2,
ERL_DRV_ATOM, driver_mk_atom("trickle_interval"),
ERL_DRV_UINT, G_TRICKLE_INTERVAL,
ERL_DRV_TUPLE, 2,
ERL_DRV_ATOM, driver_mk_atom("trickle_percentage"),
ERL_DRV_UINT, G_TRICKLE_PERCENTAGE,
ERL_DRV_TUPLE, 2,
ERL_DRV_ATOM, driver_mk_atom("checkpoint_interval"),
ERL_DRV_UINT, G_CHECKPOINT_INTERVAL,
ERL_DRV_TUPLE, 2,
ERL_DRV_ATOM, driver_mk_atom("num_general_threads"),
ERL_DRV_UINT, G_NUM_GENERAL_THREADS,
ERL_DRV_TUPLE, 2,
ERL_DRV_ATOM, driver_mk_atom("num_txn_threads"),
ERL_DRV_UINT, G_NUM_TXN_THREADS,
ERL_DRV_TUPLE, 2,
ERL_DRV_ATOM, driver_mk_atom("general_jobs_pending"),
ERL_DRV_UINT, general_pending,
ERL_DRV_TUPLE, 2,
ERL_DRV_ATOM, driver_mk_atom("general_jobs_active"),
ERL_DRV_UINT, general_active,
ERL_DRV_TUPLE, 2,
ERL_DRV_ATOM, driver_mk_atom("txn_jobs_pending"),
ERL_DRV_UINT, txn_pending,
ERL_DRV_TUPLE, 2,
ERL_DRV_ATOM, driver_mk_atom("txn_jobs_active"),
ERL_DRV_UINT, txn_active,
ERL_DRV_TUPLE, 2,
// End of list
ERL_DRV_NIL,
ERL_DRV_LIST, 11+1,
ERL_DRV_TUPLE, 2
};
driver_send_term(port, pid, response, sizeof(response) / sizeof(response[0]));
}
static void* zalloc(unsigned int size)
{
void* res = driver_alloc(size);

1
c_src/bdberl_drv.h
View file

@ -50,6 +50,7 @@
#define CMD_TXN_STAT_PRINT 30
#define CMD_DATA_DIRS_INFO 31
#define CMD_LOG_DIR_INFO 32
#define CMD_DRIVER_INFO 33
/**
* Command status values

10
c_src/bdberl_tpool.c
View file

@ -325,3 +325,13 @@ static int is_active_job(TPool* tpool, TPoolJob* job)
}
return 0;
}
// Return the number of pending and active jobs
void bdberl_tpool_job_count(TPool* tpool, unsigned int *pending_count_ptr,
unsigned int *active_count_ptr)
{
LOCK(tpool);
*pending_count_ptr = tpool->pending_job_count;
*active_count_ptr = tpool->active_job_count;
UNLOCK(tpool);
}

2
c_src/bdberl_tpool.h
View file

@ -65,5 +65,7 @@ void bdberl_tpool_run(TPool* tpool, TPoolJobFunc main_fn, void* arg, TPoolJobFun
void bdberl_tpool_cancel(TPool* tpool, TPoolJob* job);
void bdberl_tpool_job_count(TPool* tpool, unsigned int *pending_count_ptr,
unsigned int *active_count_ptr);
#endif

1
include/bdberl.hrl
View file

@ -38,6 +38,7 @@
-define(CMD_TXN_STAT_PRINT, 30).
-define(CMD_DATA_DIRS_INFO, 31).
-define(CMD_LOG_DIR_INFO, 32).
-define(CMD_DRIVER_INFO, 33).
-define(DB_TYPE_BTREE, 1).
-define(DB_TYPE_HASH, 2).

32
src/bdberl.erl
View file

@ -40,6 +40,7 @@
truncate/0, truncate/1,
delete_database/1,
cursor_open/1, cursor_next/0, cursor_prev/0, cursor_current/0, cursor_close/0,
driver_info/0,
register_logger/0,
stop/0]).
@ -2059,6 +2060,22 @@ env_stat_print(Opts) ->
env_stat_print() ->
env_stat_print([]).
%%--------------------------------------------------------------------
%% @doc
%% Retrieve driver info
%%
%% @spec driver_info() -> {ok, [{atom(), number()}]} | {error, Error}
%%
%% @end
%%--------------------------------------------------------------------
-spec driver_info() ->
{ok, [{atom(), number()}]} | db_error().
driver_info() ->
<<Rc:32/signed-native>> = erlang:port_control(get_port(), ?CMD_DRIVER_INFO, <<>>),
recv_val(Rc).
%%--------------------------------------------------------------------
%% @doc
%% Registers the port owner pid to receive any BDB err/msg events. Note
@ -2318,3 +2335,18 @@ recv_dirs_info(DirInfos) ->
{ok, DirInfos}
end.
%%
%% Receive an {ok, Val} pair or an {error, Reason} pair if Rc is ok
%%
recv_val(Rc) ->
case decode_rc(Rc) of
ok ->
receive
{ok, Val} ->
{ok, Val};
{error, Reason} ->
{error, Reason}
end;
Error ->
{error, Error}
end.