static void srd_inst_join_decode_thread(struct srd_decoder_inst *di);
static void srd_inst_reset_state(struct srd_decoder_inst *di);
+SRD_PRIV void oldpins_array_seed(struct srd_decoder_inst *di);
SRD_PRIV void oldpins_array_free(struct srd_decoder_inst *di);
/** @endcond */
gint64 val_int;
int ret;
const char *val_str;
+ PyGILState_STATE gstate;
if (!di) {
srd_err("Invalid decoder instance.");
return SRD_ERR_ARG;
}
+ gstate = PyGILState_Ensure();
+
if (!PyObject_HasAttrString(di->decoder->py_dec, "options")) {
/* Decoder has no options. */
+ PyGILState_Release(gstate);
if (g_hash_table_size(options) == 0) {
/* No options provided. */
return SRD_OK;
srd_exception_catch("Stray exception in srd_inst_option_set()");
ret = SRD_ERR_PYTHON;
}
+ PyGILState_Release(gstate);
return ret;
}
}
pdch = sl->data;
new_channelmap[pdch->order] = new_channelnum;
- srd_dbg("Setting channel mapping: %s (index %d) = channel %d.",
+ srd_dbg("Setting channel mapping: %s (PD ch idx %d) = input data ch idx %d.",
pdch->id, pdch->order, new_channelnum);
}
srd_dbg("Final channel map:");
num_required_channels = g_slist_length(di->decoder->channels);
for (i = 0; i < di->dec_num_channels; i++) {
- srd_dbg(" - index %d = channel %d (%s)", i, new_channelmap[i],
+ GSList *l = g_slist_nth(di->decoder->channels, i);
+ if (!l)
+ l = g_slist_nth(di->decoder->opt_channels,
+ i - num_required_channels);
+ pdch = l->data;
+ srd_dbg(" - PD ch idx %d (%s) = input data ch idx %d (%s)", i,
+ pdch->id, new_channelmap[i],
(i < num_required_channels) ? "required" : "optional");
}
struct srd_decoder *dec;
struct srd_decoder_inst *di;
char *inst_id;
+ PyGILState_STATE gstate;
i = 1;
srd_dbg("Creating new %s instance.", decoder_id);
}
/* Default to the initial pins being the same as in sample 0. */
- di->old_pins_array = g_array_sized_new(FALSE, TRUE, sizeof(uint8_t),
- di->dec_num_channels);
- g_array_set_size(di->old_pins_array, di->dec_num_channels);
- memset(di->old_pins_array->data, SRD_INITIAL_PIN_SAME_AS_SAMPLE0,
- di->dec_num_channels);
+ oldpins_array_seed(di);
+
+ gstate = PyGILState_Ensure();
/* Create a new instance of this decoder class. */
if (!(di->py_inst = PyObject_CallObject(dec->py_dec, NULL))) {
if (PyErr_Occurred())
srd_exception_catch("Failed to create %s instance",
decoder_id);
+ PyGILState_Release(gstate);
g_free(di->dec_channelmap);
g_free(di);
return NULL;
}
+ PyGILState_Release(gstate);
+
if (options && srd_inst_option_set(di, options) != SRD_OK) {
g_free(di->dec_channelmap);
g_free(di);
struct srd_decoder_inst *di_bottom,
struct srd_decoder_inst *di_top)
{
-
if (session_is_valid(sess) != SRD_OK) {
srd_err("Invalid session.");
return SRD_ERR_ARG;
}
s = g_string_sized_new(100);
+ oldpins_array_seed(di);
for (i = 0; i < di->dec_num_channels; i++) {
di->old_pins_array->data[i] = initial_pins->data[i];
g_string_append_printf(s, "%d, ", di->old_pins_array->data[i]);
return SRD_OK;
}
+/** @private */
+SRD_PRIV void oldpins_array_seed(struct srd_decoder_inst *di)
+{
+ size_t count;
+ GArray *arr;
+
+ if (!di)
+ return;
+ if (di->old_pins_array)
+ return;
+
+ srd_dbg("%s: Seeding old pins, %s().", di->inst_id, __func__);
+ count = di->dec_num_channels;
+ arr = g_array_sized_new(FALSE, TRUE, sizeof(uint8_t), count);
+ g_array_set_size(arr, count);
+ memset(arr->data, SRD_INITIAL_PIN_SAME_AS_SAMPLE0, count);
+ di->old_pins_array = arr;
+}
+
/** @private */
SRD_PRIV void oldpins_array_free(struct srd_decoder_inst *di)
{
GSList *l;
struct srd_decoder_inst *next_di;
int ret;
+ PyGILState_STATE gstate;
srd_dbg("Calling start() method on protocol decoder instance %s.",
di->inst_id);
+ gstate = PyGILState_Ensure();
+
/* Run self.start(). */
if (!(py_res = PyObject_CallMethod(di->py_inst, "start", NULL))) {
srd_exception_catch("Protocol decoder instance %s",
di->inst_id);
+ PyGILState_Release(gstate);
return SRD_ERR_PYTHON;
}
Py_DecRef(py_res);
/* Set self.matched to None. */
PyObject_SetAttrString(di->py_inst, "matched", Py_None);
+ PyGILState_Release(gstate);
+
/* Start all the PDs stacked on top of this one. */
for (l = di->next_di; l; l = l->next) {
next_di = l->data;
if (!di || !di->dec_channelmap || !sample_pos)
return;
+ oldpins_array_seed(di);
for (i = 0; i < di->dec_num_channels; i++) {
byte_offset = di->dec_channelmap[i] / 8;
bit_offset = di->dec_channelmap[i] % 8;
sample_pos = di->inbuf + ((di->abs_cur_samplenum - di->abs_start_samplenum) * di->data_unitsize);
+ oldpins_array_seed(di);
for (i = 0; i < di->dec_num_channels; i++) {
if (di->old_pins_array->data[i] != SRD_INITIAL_PIN_SAME_AS_SAMPLE0)
continue;
static gboolean find_match(struct srd_decoder_inst *di)
{
- static uint64_t s = 0;
uint64_t i, j, num_samples_to_process;
GSList *l, *cond;
const uint8_t *sample_pos;
if (di->abs_cur_samplenum == 0)
update_old_pins_array_initial_pins(di);
- for (i = 0, s = 0; i < num_samples_to_process; i++, s++, (di->abs_cur_samplenum)++) {
+ for (i = 0; i < num_samples_to_process; i++, (di->abs_cur_samplenum)++) {
sample_pos = di->inbuf + ((di->abs_cur_samplenum - di->abs_start_samplenum) * di->data_unitsize);
PyObject *py_res;
struct srd_decoder_inst *di;
int wanted_term;
+ PyGILState_STATE gstate;
if (!data)
return NULL;
srd_dbg("%s: Starting thread routine for decoder.", di->inst_id);
+ gstate = PyGILState_Ensure();
+
/*
* Call self.decode(). Only returns if the PD throws an exception.
* "Regular" termination of the decode() method is not expected.
*/
srd_dbg("%s: Thread done (!res, want_term).", di->inst_id);
PyErr_Clear();
+ PyGILState_Release(gstate);
return NULL;
}
if (!py_res) {
srd_dbg("%s: decode() terminated unrequested.", di->inst_id);
srd_exception_catch("Protocol decoder instance %s: ", di->inst_id);
srd_dbg("%s: Thread done (!res, !want_term).", di->inst_id);
+ PyGILState_Release(gstate);
return NULL;
}
Py_DecRef(py_res);
PyErr_Clear();
+ PyGILState_Release(gstate);
+
srd_dbg("%s: Thread done (with res).", di->inst_id);
return NULL;
di->inbuflen = inbuflen;
di->got_new_samples = TRUE;
di->handled_all_samples = FALSE;
- di->want_wait_terminate = FALSE;
/* Signal the thread that we have new data. */
g_cond_signal(&di->got_new_samples_cond);
g_cond_wait(&di->handled_all_samples_cond, &di->data_mutex);
g_mutex_unlock(&di->data_mutex);
+ if (di->want_wait_terminate)
+ return SRD_ERR_TERM_REQ;
+ return SRD_OK;
+}
+
+/**
+ * Terminate current decoder work, prepare for re-use on new input data.
+ *
+ * Terminates all decoder operations in the specified decoder instance
+ * and the instances stacked on top of it. Resets internal state such
+ * that the previously constructed stack can process new input data that
+ * is not related to previously processed input data. This avoids the
+ * expensive and complex re-construction of decoder stacks.
+ *
+ * Callers are expected to follow up with start, metadata, and decode
+ * calls like they would for newly constructed decoder stacks.
+ *
+ * @param di The decoder instance to call. Must not be NULL.
+ * @return SRD_OK upon success, a (negative) error code otherwise.
+ * @private
+ */
+SRD_PRIV int srd_inst_terminate_reset(struct srd_decoder_inst *di)
+{
+ PyGILState_STATE gstate;
+ PyObject *py_ret;
+ GSList *l;
+ int ret;
+
+ if (!di)
+ return SRD_ERR_ARG;
+
+ /*
+ * Request termination and wait for previously initiated
+ * background operation to finish. Reset internal state, but
+ * do not start releasing resources yet. This shall result in
+ * decoders' state just like after creation. This block handles
+ * the C language library side.
+ */
+ srd_dbg("Terminating instance %s", di->inst_id);
+ srd_inst_join_decode_thread(di);
+ srd_inst_reset_state(di);
+
+ /*
+ * Have the Python side's .reset() method executed (if the PD
+ * implements it). It's assumed that .reset() assigns variables
+ * very much like __init__() used to do in the past. Thus memory
+ * that was allocated in previous calls gets released by Python
+ * as it's not referenced any longer.
+ */
+ gstate = PyGILState_Ensure();
+ if (PyObject_HasAttrString(di->py_inst, "reset")) {
+ srd_dbg("Calling .reset() of instance %s", di->inst_id);
+ py_ret = PyObject_CallMethod(di->py_inst, "reset", NULL);
+ Py_XDECREF(py_ret);
+ }
+ PyGILState_Release(gstate);
+
+ /*
+ * Pass the "restart" request to all stacked decoders.
+ */
+ for (l = di->next_di; l; l = l->next) {
+ ret = srd_inst_terminate_reset(l->data);
+ if (ret != SRD_OK)
+ return ret;
+ }
+
return SRD_OK;
}
{
GSList *l;
struct srd_pd_output *pdo;
+ PyGILState_STATE gstate;
srd_dbg("Freeing instance %s", di->inst_id);
srd_inst_join_decode_thread(di);
+
srd_inst_reset_state(di);
+ gstate = PyGILState_Ensure();
Py_DecRef(di->py_inst);
+ PyGILState_Release(gstate);
+
g_free(di->inst_id);
g_free(di->dec_channelmap);
g_free(di->channel_samples);
projects / libsigrokdecode.git / blobdiff