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This commit is contained in:
Christian Grothoff 2015-07-01 14:31:48 +02:00
parent c448e48b53
commit 1e3a45e0cd
1 changed files with 61 additions and 49 deletions
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94
src/mintdb/perf_taler_mintdb_interpreter.c
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@ -132,10 +132,10 @@ data_copy (const struct PERF_TALER_MINTDB_Data *data, struct PERF_TALER_MINTDB_D
* Finds the first command in cmd with the name search * Finds the first command in cmd with the name search
* *
* @return the index of the first command with name search * @return the index of the first command with name search
* GNUNET_SYSERR if none found * #GNUNET_SYSERR if none found
*/ */
static int static int
cmd_find (const struct PERF_TALER_MINTDB_Cmd *cmd, const char *search) cmd_find (const struct PERF_TALER_MINTDB_Cmd *cmd, const char *search)
{ {
unsigned int i; unsigned int i;
@ -152,7 +152,7 @@ cmd_find (const struct PERF_TALER_MINTDB_Cmd *cmd, const char *search)
static int static int
cmd_init (struct PERF_TALER_MINTDB_Cmd cmd[]) cmd_init (struct PERF_TALER_MINTDB_Cmd cmd[])
{ {
unsigned int i = 0; unsigned int i;
for (i=0; PERF_TALER_MINTDB_CMD_END != cmd[i].command; i++) for (i=0; PERF_TALER_MINTDB_CMD_END != cmd[i].command; i++)
{ {
@ -165,18 +165,17 @@ cmd_init (struct PERF_TALER_MINTDB_Cmd cmd[])
GNUNET_assert (GNUNET_SYSERR != GNUNET_assert (GNUNET_SYSERR !=
(save_label = cmd_find (cmd, (save_label = cmd_find (cmd,
cmd[i].details.save_array.label_save))); cmd[i].details.save_array.label_save)));
/* Allocation of memory for saving data */ /* Allocation of memory for saving data */
cmd[i].details.save_array.data_saved = cmd[i].details.save_array.data_saved =
GNUNET_new_array (cmd[i].details.save_array.nb_saved, GNUNET_new_array (cmd[i].details.save_array.nb_saved,
struct PERF_TALER_MINTDB_Data); struct PERF_TALER_MINTDB_Data);
} }
break; break;
case PERF_TALER_MINTDB_CMD_LOAD_ARRAY: case PERF_TALER_MINTDB_CMD_LOAD_ARRAY:
/* Creating the permutation array to randomize the data order */ /* Creating the permutation array to randomize the data order */
{ {
int save_index ; int save_index;
GNUNET_assert (GNUNET_SYSERR != GNUNET_assert (GNUNET_SYSERR !=
(save_index = cmd_find ( (save_index = cmd_find (
@ -204,15 +203,16 @@ cmd_init (struct PERF_TALER_MINTDB_Cmd cmd[])
static int static int
cmd_clean (struct PERF_TALER_MINTDB_Cmd cmd[]) cmd_clean (struct PERF_TALER_MINTDB_Cmd cmd[])
{ {
unsigned int i = 0; unsigned int i;
for (i = 0; PERF_TALER_MINTDB_CMD_END != cmd[i].command; i++) for (i=0; PERF_TALER_MINTDB_CMD_END != cmd[i].command; i++)
{ {
switch (cmd[i].command) switch (cmd[i].command)
{ {
case PERF_TALER_MINTDB_CMD_SAVE_ARRAY: case PERF_TALER_MINTDB_CMD_SAVE_ARRAY:
{ {
unsigned int j; unsigned int j;
for (j = 0; j < cmd[i].details.save_array.nb_saved; j++) for (j = 0; j < cmd[i].details.save_array.nb_saved; j++)
{ {
data_free (&cmd[i].details.save_array.data_saved[j]); data_free (&cmd[i].details.save_array.data_saved[j]);
@ -234,7 +234,7 @@ cmd_clean (struct PERF_TALER_MINTDB_Cmd cmd[])
} }
} }
return GNUNET_OK; return GNUNET_OK;
}; }
/** /**
@ -245,10 +245,11 @@ interpret_end_loop (struct PERF_TALER_MINTDB_interpreter_state *state)
{ {
unsigned int i; unsigned int i;
int jump; int jump;
GNUNET_assert (GNUNET_SYSERR !=
(jump = cmd_find (state->cmd, GNUNET_assert (GNUNET_SYSERR !=
state->cmd[state->i] (jump = cmd_find (state->cmd,
.details.end_loop.label_loop))); state->cmd[state->i]
.details.end_loop.label_loop)));
// Cleaning up the memory in the loop // Cleaning up the memory in the loop
for (i = jump; i < state->i; i++) for (i = jump; i < state->i; i++)
{ {
@ -262,7 +263,9 @@ interpret_end_loop (struct PERF_TALER_MINTDB_interpreter_state *state)
{ {
/* jump back to the start */ /* jump back to the start */
state->i = jump; state->i = jump;
}else{ }
else
{
/* Reset the loop counter and continue running */ /* Reset the loop counter and continue running */
state->cmd[jump].details.loop.curr_iteration = 0; state->cmd[jump].details.loop.curr_iteration = 0;
} }
@ -276,26 +279,30 @@ interpret_end_loop (struct PERF_TALER_MINTDB_interpreter_state *state)
static void static void
interpret_save_array (struct PERF_TALER_MINTDB_interpreter_state *state) interpret_save_array (struct PERF_TALER_MINTDB_interpreter_state *state)
{ {
int loop_index, save_index; struct PERF_TALER_MINTDB_Cmd *cmd = &state->cmd[state->i];
struct PERF_TALER_MINTDB_Cmd *save_ref;
struct PERF_TALER_MINTDB_Cmd *loop_ref;
int loop_index;
int save_index;
unsigned int selection_chance; unsigned int selection_chance;
GNUNET_assert (GNUNET_SYSERR != GNUNET_assert (GNUNET_SYSERR !=
(loop_index = cmd_find (state->cmd, (loop_index = cmd_find (state->cmd,
state->cmd[state->i] cmd->details.save_array.label_loop)));
.details.save_array.label_loop))); loop_ref = &state->cmd[save_index];
GNUNET_assert (GNUNET_SYSERR != GNUNET_assert (GNUNET_SYSERR !=
(save_index = cmd_find (state->cmd, (save_index = cmd_find (state->cmd,
state->cmd[state->i] cmd->details.save_array.label_save)));
.details.save_array.label_save))); save_ref = &state->cmd[save_index];
/* Array initialization on first loop iteration /* Array initialization on first loop iteration
Alows for nested loops */ Alows for nested loops */
if (0 == state->cmd[loop_index].details.loop.curr_iteration) if (0 == cmd->details.loop.curr_iteration)
{ {
state->cmd[state->i].details.save_array.index = 0; cmd->details.save_array.index = 0;
} }
/* The probobility distribution of the saved items will be a little biased /* The probobility distribution of the saved items will be a little biased
against the few last items but it should not be a big problem. */ against the few last items but it should not be a big problem. */
selection_chance = state->cmd[loop_index].details.loop.max_iterations / selection_chance = loop_ref->details.loop.max_iterations /
state->cmd[state->i].details.save_array.nb_saved; state->cmd[state->i].details.save_array.nb_saved;
/* /*
* If the remaining space is equal to the remaining number of * If the remaining space is equal to the remaining number of
@ -303,14 +310,14 @@ interpret_save_array (struct PERF_TALER_MINTDB_interpreter_state *state)
* *
* Else it is saved only if the random numbre generated is 0 * Else it is saved only if the random numbre generated is 0
*/ */
if ((0 < (state->cmd[state->i].details.save_array.nb_saved - if ( (0 < (state->cmd[state->i].details.save_array.nb_saved -
state->cmd[state->i].details.save_array.index)) && state->cmd[state->i].details.save_array.index) ) &&
(((state->cmd[loop_index].details.loop.max_iterations - ( ((state->cmd[loop_index].details.loop.max_iterations -
state->cmd[loop_index].details.loop.curr_iteration) == state->cmd[loop_index].details.loop.curr_iteration) ==
(state->cmd[state->i].details.save_array.nb_saved - (state->cmd[state->i].details.save_array.nb_saved -
state->cmd[state->i].details.save_array.index)) state->cmd[state->i].details.save_array.index)) ||
|| (0 == GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, (0 == GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
selection_chance)))) selection_chance)) ) )
{ {
struct PERF_TALER_MINTDB_Data *save_location; struct PERF_TALER_MINTDB_Data *save_location;
struct PERF_TALER_MINTDB_Data *item_saved; struct PERF_TALER_MINTDB_Data *item_saved;
@ -332,7 +339,8 @@ static void
interpret_load_array (struct PERF_TALER_MINTDB_interpreter_state *state) interpret_load_array (struct PERF_TALER_MINTDB_interpreter_state *state)
{ {
unsigned int loop_iter; unsigned int loop_iter;
int loop_index, save_index; int loop_index;
int save_index;
struct PERF_TALER_MINTDB_Data *loaded_data; struct PERF_TALER_MINTDB_Data *loaded_data;
GNUNET_assert (GNUNET_SYSERR != GNUNET_assert (GNUNET_SYSERR !=
@ -361,6 +369,7 @@ interpret_load_array (struct PERF_TALER_MINTDB_interpreter_state *state)
data_copy (loaded_data, &state->cmd[state->i].exposed); data_copy (loaded_data, &state->cmd[state->i].exposed);
} }
/** /**
* Main interpreter loop. * Main interpreter loop.
* *
@ -377,7 +386,9 @@ interpret (struct PERF_TALER_MINTDB_interpreter_state *state)
return GNUNET_YES; return GNUNET_YES;
case PERF_TALER_MINTDB_CMD_DEBUG: case PERF_TALER_MINTDB_CMD_DEBUG:
GNUNET_log (GNUNET_ERROR_TYPE_INFO, "%s\n", state->cmd[state->i].label); GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"%s\n",
state->cmd[state->i].label);
break; break;
case PERF_TALER_MINTDB_CMD_LOOP: case PERF_TALER_MINTDB_CMD_LOOP:
@ -430,7 +441,8 @@ interpret (struct PERF_TALER_MINTDB_interpreter_state *state)
break; break;
case PERF_TALER_MINTDB_CMD_ABORT_TRANSACTION: case PERF_TALER_MINTDB_CMD_ABORT_TRANSACTION:
state->plugin->rollback (state->plugin->cls, state->session); state->plugin->rollback (state->plugin->cls,
state->session);
case PERF_TALER_MINTDB_CMD_SAVE_ARRAY: case PERF_TALER_MINTDB_CMD_SAVE_ARRAY:
interpret_save_array (state); interpret_save_array (state);
@ -444,13 +456,12 @@ interpret (struct PERF_TALER_MINTDB_interpreter_state *state)
{ {
int dki_index; int dki_index;
struct TALER_MINTDB_Deposit *deposit; struct TALER_MINTDB_Deposit *deposit;
GNUNET_assert (GNUNET_SYSERR != GNUNET_assert (GNUNET_SYSERR !=
(dki_index = cmd_find(state->cmd, (dki_index = cmd_find(state->cmd,
state->cmd[state->i] state->cmd[state->i].details.insert_deposit.label_dki)));
.details.insert_deposit.label_dki)));
GNUNET_assert (NULL != GNUNET_assert (NULL !=
(deposit = PERF_TALER_MINTDB_deposit_init ( (deposit = PERF_TALER_MINTDB_deposit_init (state->cmd[dki_index].exposed.data.dki)));
state->cmd[dki_index].exposed.data.dki)));
GNUNET_assert ( GNUNET_assert (
state->plugin->insert_deposit (state->plugin->cls, state->plugin->insert_deposit (state->plugin->cls,
@ -616,7 +627,8 @@ PERF_TALER_MINTDB_interpret (struct TALER_MINTDB_Plugin *db_plugin,
cmd_init (state.cmd); cmd_init (state.cmd);
// Running the interpreter // Running the interpreter
GNUNET_assert (NULL != GNUNET_assert (NULL !=
(state.session = db_plugin->get_session (db_plugin->cls, GNUNET_YES))); (state.session = db_plugin->get_session (db_plugin->cls,
GNUNET_YES)));
interpret (&state); interpret (&state);
// Cleaning the memory // Cleaning the memory
cmd_clean (cmd); cmd_clean (cmd);