X-Git-Url: https://sigrok.org/gitweb/?p=libsigrokdecode.git;a=blobdiff_plain;f=type_decoder.c;h=880dbade0a7697d054308001b1e3a66b988d829c;hp=08580980070fe0ee10c654d7cafde315d7c9a3f8;hb=3f3c4614b551855d7cf56e83ec7fb883592050ab;hpb=4564e8e53af85e696a58e43677bae87470c52771 diff --git a/type_decoder.c b/type_decoder.c index 0858098..880dbad 100644 --- a/type_decoder.c +++ b/type_decoder.c @@ -48,12 +48,15 @@ static int convert_annotation(struct srd_decoder_inst *di, PyObject *obj, struct srd_proto_data_annotation *pda; int ann_class; char **ann_text; + PyGILState_STATE gstate; + + gstate = PyGILState_Ensure(); /* Should be a list of [annotation class, [string, ...]]. */ if (!PyList_Check(obj)) { srd_err("Protocol decoder %s submitted an annotation that" " is not a list", di->decoder->name); - return SRD_ERR_PYTHON; + goto err; } /* Should have 2 elements. */ @@ -61,7 +64,7 @@ static int convert_annotation(struct srd_decoder_inst *di, PyObject *obj, srd_err("Protocol decoder %s submitted annotation list with " "%zd elements instead of 2", di->decoder->name, PyList_Size(obj)); - return SRD_ERR_PYTHON; + goto err; } /* @@ -72,13 +75,13 @@ static int convert_annotation(struct srd_decoder_inst *di, PyObject *obj, if (!PyLong_Check(py_tmp)) { srd_err("Protocol decoder %s submitted annotation list, but " "first element was not an integer.", di->decoder->name); - return SRD_ERR_PYTHON; + goto err; } ann_class = PyLong_AsLong(py_tmp); if (!(pdo = g_slist_nth_data(di->decoder->annotations, ann_class))) { srd_err("Protocol decoder %s submitted data to unregistered " "annotation class %d.", di->decoder->name, ann_class); - return SRD_ERR_PYTHON; + goto err; } /* Second element must be a list. */ @@ -86,12 +89,12 @@ static int convert_annotation(struct srd_decoder_inst *di, PyObject *obj, if (!PyList_Check(py_tmp)) { srd_err("Protocol decoder %s submitted annotation list, but " "second element was not a list.", di->decoder->name); - return SRD_ERR_PYTHON; + goto err; } if (py_strseq_to_char(py_tmp, &ann_text) != SRD_OK) { srd_err("Protocol decoder %s submitted annotation list, but " "second element was malformed.", di->decoder->name); - return SRD_ERR_PYTHON; + goto err; } pda = g_malloc(sizeof(struct srd_proto_data_annotation)); @@ -99,7 +102,14 @@ static int convert_annotation(struct srd_decoder_inst *di, PyObject *obj, pda->ann_text = ann_text; pdata->data = pda; + PyGILState_Release(gstate); + return SRD_OK; + +err: + PyGILState_Release(gstate); + + return SRD_ERR_PYTHON; } static int convert_binary(struct srd_decoder_inst *di, PyObject *obj, @@ -110,12 +120,15 @@ static int convert_binary(struct srd_decoder_inst *di, PyObject *obj, Py_ssize_t size; int bin_class; char *class_name, *buf; + PyGILState_STATE gstate; + + gstate = PyGILState_Ensure(); /* Should be a list of [binary class, bytes]. */ if (!PyList_Check(obj)) { srd_err("Protocol decoder %s submitted non-list for SRD_OUTPUT_BINARY.", di->decoder->name); - return SRD_ERR_PYTHON; + goto err; } /* Should have 2 elements. */ @@ -123,7 +136,7 @@ static int convert_binary(struct srd_decoder_inst *di, PyObject *obj, srd_err("Protocol decoder %s submitted SRD_OUTPUT_BINARY list " "with %zd elements instead of 2", di->decoder->name, PyList_Size(obj)); - return SRD_ERR_PYTHON; + goto err; } /* The first element should be an integer. */ @@ -131,13 +144,13 @@ static int convert_binary(struct srd_decoder_inst *di, PyObject *obj, if (!PyLong_Check(py_tmp)) { srd_err("Protocol decoder %s submitted SRD_OUTPUT_BINARY list, " "but first element was not an integer.", di->decoder->name); - return SRD_ERR_PYTHON; + goto err; } bin_class = PyLong_AsLong(py_tmp); if (!(class_name = g_slist_nth_data(di->decoder->binary, bin_class))) { srd_err("Protocol decoder %s submitted SRD_OUTPUT_BINARY with " "unregistered binary class %d.", di->decoder->name, bin_class); - return SRD_ERR_PYTHON; + goto err; } /* Second element should be bytes. */ @@ -145,19 +158,22 @@ static int convert_binary(struct srd_decoder_inst *di, PyObject *obj, if (!PyBytes_Check(py_tmp)) { srd_err("Protocol decoder %s submitted SRD_OUTPUT_BINARY list, " "but second element was not bytes.", di->decoder->name); - return SRD_ERR_PYTHON; + goto err; } /* Consider an empty set of bytes a bug. */ if (PyBytes_Size(py_tmp) == 0) { srd_err("Protocol decoder %s submitted SRD_OUTPUT_BINARY " "with empty data set.", di->decoder->name); - return SRD_ERR_PYTHON; + goto err; } pdb = g_malloc(sizeof(struct srd_proto_data_binary)); if (PyBytes_AsStringAndSize(py_tmp, &buf, &size) == -1) - return SRD_ERR_PYTHON; + goto err; + + PyGILState_Release(gstate); + pdb->bin_class = bin_class; pdb->size = size; if (!(pdb->data = g_try_malloc(pdb->size))) @@ -166,36 +182,51 @@ static int convert_binary(struct srd_decoder_inst *di, PyObject *obj, pdata->data = pdb; return SRD_OK; + +err: + PyGILState_Release(gstate); + + return SRD_ERR_PYTHON; } static int convert_meta(struct srd_proto_data *pdata, PyObject *obj) { long long intvalue; double dvalue; + PyGILState_STATE gstate; + + gstate = PyGILState_Ensure(); if (pdata->pdo->meta_type == G_VARIANT_TYPE_INT64) { if (!PyLong_Check(obj)) { PyErr_Format(PyExc_TypeError, "This output was registered " "as 'int', but something else was passed."); - return SRD_ERR_PYTHON; + goto err; } intvalue = PyLong_AsLongLong(obj); if (PyErr_Occurred()) - return SRD_ERR_PYTHON; + goto err; pdata->data = g_variant_new_int64(intvalue); } else if (pdata->pdo->meta_type == G_VARIANT_TYPE_DOUBLE) { if (!PyFloat_Check(obj)) { PyErr_Format(PyExc_TypeError, "This output was registered " "as 'float', but something else was passed."); - return SRD_ERR_PYTHON; + goto err; } dvalue = PyFloat_AsDouble(obj); if (PyErr_Occurred()) - return SRD_ERR_PYTHON; + goto err; pdata->data = g_variant_new_double(dvalue); } + PyGILState_Release(gstate); + return SRD_OK; + +err: + PyGILState_Release(gstate); + + return SRD_ERR_PYTHON; } static PyObject *Decoder_put(PyObject *self, PyObject *args) @@ -204,15 +235,18 @@ static PyObject *Decoder_put(PyObject *self, PyObject *args) PyObject *py_data, *py_res; struct srd_decoder_inst *di, *next_di; struct srd_pd_output *pdo; - struct srd_proto_data *pdata; + struct srd_proto_data pdata; uint64_t start_sample, end_sample; int output_id; struct srd_pd_callback *cb; + PyGILState_STATE gstate; + + gstate = PyGILState_Ensure(); if (!(di = srd_inst_find_by_obj(NULL, self))) { /* Shouldn't happen. */ srd_dbg("put(): self instance not found."); - return NULL; + goto err; } if (!PyArg_ParseTuple(args, "KKiO", &start_sample, &end_sample, @@ -222,13 +256,13 @@ static PyObject *Decoder_put(PyObject *self, PyObject *args) * Python raise it. This results in a much better trace in * controller.c on the decode() method call. */ - return NULL; + goto err; } if (!(l = g_slist_nth(di->pd_output, output_id))) { srd_err("Protocol decoder %s submitted invalid output ID %d.", di->decoder->name, output_id); - return NULL; + goto err; } pdo = l->data; @@ -236,21 +270,23 @@ static PyObject *Decoder_put(PyObject *self, PyObject *args) di->inst_id, start_sample, end_sample, output_type_name(pdo->output_type), output_id); - pdata = g_malloc0(sizeof(struct srd_proto_data)); - pdata->start_sample = start_sample; - pdata->end_sample = end_sample; - pdata->pdo = pdo; + pdata.start_sample = start_sample; + pdata.end_sample = end_sample; + pdata.pdo = pdo; + pdata.data = NULL; switch (pdo->output_type) { case SRD_OUTPUT_ANN: /* Annotations are only fed to callbacks. */ if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) { /* Convert from PyDict to srd_proto_data_annotation. */ - if (convert_annotation(di, py_data, pdata) != SRD_OK) { + if (convert_annotation(di, py_data, &pdata) != SRD_OK) { /* An error was already logged. */ break; } - cb->cb(pdata, cb->cb_data); + Py_BEGIN_ALLOW_THREADS + cb->cb(&pdata, cb->cb_data); + Py_END_ALLOW_THREADS } break; case SRD_OUTPUT_PYTHON: @@ -269,28 +305,32 @@ static PyObject *Decoder_put(PyObject *self, PyObject *args) if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) { /* Frontends aren't really supposed to get Python * callbacks, but it's useful for testing. */ - pdata->data = py_data; - cb->cb(pdata, cb->cb_data); + pdata.data = py_data; + cb->cb(&pdata, cb->cb_data); } break; case SRD_OUTPUT_BINARY: if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) { /* Convert from PyDict to srd_proto_data_binary. */ - if (convert_binary(di, py_data, pdata) != SRD_OK) { + if (convert_binary(di, py_data, &pdata) != SRD_OK) { /* An error was already logged. */ break; } - cb->cb(pdata, cb->cb_data); + Py_BEGIN_ALLOW_THREADS + cb->cb(&pdata, cb->cb_data); + Py_END_ALLOW_THREADS } break; case SRD_OUTPUT_META: if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) { /* Annotations need converting from PyObject. */ - if (convert_meta(pdata, py_data) != SRD_OK) { + if (convert_meta(&pdata, py_data) != SRD_OK) { /* An exception was already set up. */ break; } - cb->cb(pdata, cb->cb_data); + Py_BEGIN_ALLOW_THREADS + cb->cb(&pdata, cb->cb_data); + Py_END_ALLOW_THREADS } break; default: @@ -299,9 +339,14 @@ static PyObject *Decoder_put(PyObject *self, PyObject *args) break; } - g_free(pdata); + PyGILState_Release(gstate); Py_RETURN_NONE; + +err: + PyGILState_Release(gstate); + + return NULL; } static PyObject *Decoder_register(PyObject *self, PyObject *args, @@ -315,6 +360,12 @@ static PyObject *Decoder_register(PyObject *self, PyObject *args, int output_type; char *proto_id, *meta_name, *meta_descr; char *keywords[] = {"output_type", "proto_id", "meta", NULL}; + PyGILState_STATE gstate; + gboolean is_meta; + GSList *l; + struct srd_pd_output *cmp; + + gstate = PyGILState_Ensure(); meta_type_py = NULL; meta_type_gv = NULL; @@ -322,7 +373,7 @@ static PyObject *Decoder_register(PyObject *self, PyObject *args, if (!(di = srd_inst_find_by_obj(NULL, self))) { PyErr_SetString(PyExc_Exception, "decoder instance not found"); - return NULL; + goto err; } /* Default to instance id, which defaults to class id. */ @@ -331,21 +382,44 @@ static PyObject *Decoder_register(PyObject *self, PyObject *args, &output_type, &proto_id, &meta_type_py, &meta_name, &meta_descr)) { /* Let Python raise this exception. */ - return NULL; + goto err; } /* Check if the meta value's type is supported. */ - if (output_type == SRD_OUTPUT_META) { + is_meta = output_type == SRD_OUTPUT_META; + if (is_meta) { if (meta_type_py == &PyLong_Type) meta_type_gv = G_VARIANT_TYPE_INT64; else if (meta_type_py == &PyFloat_Type) meta_type_gv = G_VARIANT_TYPE_DOUBLE; else { PyErr_Format(PyExc_TypeError, "Unsupported type."); - return NULL; + goto err; } } + pdo = NULL; + for (l = di->pd_output; l; l = l->next) { + cmp = l->data; + if (cmp->output_type != output_type) + continue; + if (strcmp(cmp->proto_id, proto_id) != 0) + continue; + if (is_meta && cmp->meta_type != meta_type_gv) + continue; + if (is_meta && strcmp(cmp->meta_name, meta_name) != 0) + continue; + if (is_meta && strcmp(cmp->meta_descr, meta_descr) != 0) + continue; + pdo = cmp; + break; + } + if (pdo) { + py_new_output_id = Py_BuildValue("i", pdo->pdo_id); + PyGILState_Release(gstate); + return py_new_output_id; + } + srd_dbg("Instance %s creating new output type %d for %s.", di->inst_id, output_type, proto_id); @@ -366,7 +440,14 @@ static PyObject *Decoder_register(PyObject *self, PyObject *args, di->pd_output = g_slist_append(di->pd_output, pdo); py_new_output_id = Py_BuildValue("i", pdo->pdo_id); + PyGILState_Release(gstate); + return py_new_output_id; + +err: + PyGILState_Release(gstate); + + return NULL; } static int get_term_type(const char *v) @@ -405,9 +486,13 @@ static PyObject *get_current_pinvalues(const struct srd_decoder_inst *di) const uint8_t *sample_pos; int byte_offset, bit_offset; PyObject *py_pinvalues; + PyGILState_STATE gstate; + + gstate = PyGILState_Ensure(); if (!di) { srd_err("Invalid decoder instance."); + PyGILState_Release(gstate); return NULL; } @@ -427,7 +512,7 @@ static PyObject *get_current_pinvalues(const struct srd_decoder_inst *di) } } - Py_IncRef(py_pinvalues); + PyGILState_Release(gstate); return py_pinvalues; } @@ -450,6 +535,7 @@ static int create_term_list(PyObject *py_dict, GSList **term_list) struct srd_term *term; uint64_t num_samples_to_skip; char *term_str; + PyGILState_STATE gstate; if (!py_dict || !term_list) return SRD_ERR_ARG; @@ -457,6 +543,8 @@ static int create_term_list(PyObject *py_dict, GSList **term_list) /* "Create" an empty GSList of terms. */ *term_list = NULL; + gstate = PyGILState_Ensure(); + /* Iterate over all items in the current dict. */ while (PyDict_Next(py_dict, &pos, &py_key, &py_value)) { /* Check whether the current key is a string or a number. */ @@ -466,7 +554,7 @@ static int create_term_list(PyObject *py_dict, GSList **term_list) /* Get the value string. */ if ((py_pydictitem_as_str(py_dict, py_key, &term_str)) != SRD_OK) { srd_err("Failed to get the value."); - return SRD_ERR; + goto err; } term = g_malloc0(sizeof(struct srd_term)); term->type = get_term_type(term_str); @@ -477,7 +565,7 @@ static int create_term_list(PyObject *py_dict, GSList **term_list) /* TODO: Check if it's "skip". */ if ((py_pydictitem_as_long(py_dict, py_key, &num_samples_to_skip)) != SRD_OK) { srd_err("Failed to get number of samples to skip."); - return SRD_ERR; + goto err; } term = g_malloc0(sizeof(struct srd_term)); term->type = SRD_TERM_SKIP; @@ -485,14 +573,21 @@ static int create_term_list(PyObject *py_dict, GSList **term_list) term->num_samples_already_skipped = 0; } else { srd_err("Term key is neither a string nor a number."); - return SRD_ERR; + goto err; } /* Add the term to the list of terms. */ *term_list = g_slist_append(*term_list, term); } + PyGILState_Release(gstate); + return SRD_OK; + +err: + PyGILState_Release(gstate); + + return SRD_ERR; } /** @@ -512,40 +607,62 @@ static int set_new_condition_list(PyObject *self, PyObject *args) GSList *term_list; PyObject *py_conditionlist, *py_conds, *py_dict; int i, num_conditions, ret; + PyGILState_STATE gstate; if (!self || !args) return SRD_ERR_ARG; + gstate = PyGILState_Ensure(); + /* Get the decoder instance. */ if (!(di = srd_inst_find_by_obj(NULL, self))) { PyErr_SetString(PyExc_Exception, "decoder instance not found"); - return SRD_ERR; + goto err; } - /* Parse the argument of self.wait() into 'py_conds'. */ - if (!PyArg_ParseTuple(args, "O", &py_conds)) { - /* Let Python raise this exception. */ - return SRD_ERR; + /* + * Return an error condition from .wait() when termination is + * requested, such that decode() will terminate. + */ + if (di->want_wait_terminate) { + srd_dbg("%s: %s: Skip (want_term).", di->inst_id, __func__); + goto err; } - /* Check whether 'py_conds' is a dict or a list. */ - if (PyList_Check(py_conds)) { + /* + * Parse the argument of self.wait() into 'py_conds', and check + * the data type. The argument is optional, None is assumed in + * its absence. None or an empty dict or an empty list mean that + * there is no condition, and the next available sample shall + * get returned to the caller. + */ + py_conds = Py_None; + if (!PyArg_ParseTuple(args, "|O", &py_conds)) { + /* Let Python raise this exception. */ + goto err; + } + if (py_conds == Py_None) { + /* 'py_conds' is None. */ + goto ret_9999; + } else if (PyList_Check(py_conds)) { /* 'py_conds' is a list. */ py_conditionlist = py_conds; num_conditions = PyList_Size(py_conditionlist); if (num_conditions == 0) - return 9999; /* The PD invoked self.wait([]). */ + goto ret_9999; /* The PD invoked self.wait([]). */ + Py_IncRef(py_conditionlist); } else if (PyDict_Check(py_conds)) { /* 'py_conds' is a dict. */ if (PyDict_Size(py_conds) == 0) - return 9999; /* The PD invoked self.wait({}). */ + goto ret_9999; /* The PD invoked self.wait({}). */ /* Make a list and put the dict in there for convenience. */ py_conditionlist = PyList_New(1); + Py_IncRef(py_conds); PyList_SetItem(py_conditionlist, 0, py_conds); num_conditions = 1; } else { srd_err("Condition list is neither a list nor a dict."); - return SRD_ERR; + goto err; } /* Free the old condition list. */ @@ -573,43 +690,125 @@ static int set_new_condition_list(PyObject *self, PyObject *args) Py_DecRef(py_conditionlist); + PyGILState_Release(gstate); + return ret; + +err: + PyGILState_Release(gstate); + + return SRD_ERR; + +ret_9999: + PyGILState_Release(gstate); + + return 9999; +} + +/** + * Create a SKIP condition list for condition-less .wait() calls. + * + * @param di Decoder instance. + * @param count Number of samples to skip. + * + * @retval SRD_OK The new condition list was set successfully. + * @retval SRD_ERR There was an error setting the new condition list. + * The contents of di->condition_list are undefined. + * + * This routine is a reduced and specialized version of the @ref + * set_new_condition_list() and @ref create_term_list() routines which + * gets invoked when .wait() was called without specifications for + * conditions. This minor duplication of the SKIP term list creation + * simplifies the logic and avoids the creation of expensive Python + * objects with "constant" values which the caller did not pass in the + * first place. It results in maximum sharing of match handling code + * paths. + */ +static int set_skip_condition(struct srd_decoder_inst *di, uint64_t count) +{ + struct srd_term *term; + GSList *term_list; + + condition_list_free(di); + term = g_malloc0(sizeof(*term)); + term->type = SRD_TERM_SKIP; + term->num_samples_to_skip = count; + term->num_samples_already_skipped = 0; + term_list = g_slist_append(NULL, term); + di->condition_list = g_slist_append(di->condition_list, term_list); + + return SRD_OK; } static PyObject *Decoder_wait(PyObject *self, PyObject *args) { int ret; + uint64_t skip_count; unsigned int i; gboolean found_match; struct srd_decoder_inst *di; PyObject *py_pinvalues, *py_matched; + PyGILState_STATE gstate; if (!self || !args) return NULL; + gstate = PyGILState_Ensure(); + if (!(di = srd_inst_find_by_obj(NULL, self))) { PyErr_SetString(PyExc_Exception, "decoder instance not found"); + PyGILState_Release(gstate); Py_RETURN_NONE; } ret = set_new_condition_list(self, args); - + if (ret < 0) { + srd_dbg("%s: %s: Aborting wait().", di->inst_id, __func__); + goto err; + } if (ret == 9999) { - /* Empty condition list, automatic match. */ - PyObject_SetAttrString(di->py_inst, "matched", Py_None); - /* Leave self.samplenum unchanged (== di->abs_cur_samplenum). */ - return get_current_pinvalues(di); + /* + * Empty condition list, automatic match. Arrange for the + * execution of regular match handling code paths such that + * the next available sample is returned to the caller. + * Make sure to skip one sample when "anywhere within the + * stream", yet make sure to not skip sample number 0. + */ + if (di->abs_cur_samplenum) + skip_count = 1; + else if (!di->condition_list) + skip_count = 0; + else + skip_count = 1; + ret = set_skip_condition(di, skip_count); + if (ret < 0) { + srd_dbg("%s: %s: Cannot setup condition-less wait().", + di->inst_id, __func__); + goto err; + } } while (1) { - /* Wait for new samples to process. */ + + Py_BEGIN_ALLOW_THREADS + + /* Wait for new samples to process, or termination request. */ g_mutex_lock(&di->data_mutex); - while (!di->got_new_samples) + while (!di->got_new_samples && !di->want_wait_terminate) g_cond_wait(&di->got_new_samples_cond, &di->data_mutex); - /* Check whether any of the current condition(s) match. */ + /* + * Check whether any of the current condition(s) match. + * Arrange for termination requests to take a code path which + * won't find new samples to process, pretends to have processed + * previously stored samples, and returns to the main thread, + * while the termination request still gets signalled. + */ + found_match = FALSE; ret = process_samples_until_condition_match(di, &found_match); + Py_END_ALLOW_THREADS + /* If there's a match, set self.samplenum etc. and return. */ if (found_match) { /* Set self.samplenum to the (absolute) sample number that matched. */ @@ -625,11 +824,13 @@ static PyObject *Decoder_wait(PyObject *self, PyObject *args) } else { PyObject_SetAttrString(di->py_inst, "matched", Py_None); } - + py_pinvalues = get_current_pinvalues(di); g_mutex_unlock(&di->data_mutex); + PyGILState_Release(gstate); + return py_pinvalues; } @@ -644,10 +845,28 @@ static PyObject *Decoder_wait(PyObject *self, PyObject *args) /* Signal the main thread that we handled all samples. */ g_cond_signal(&di->handled_all_samples_cond); + /* + * When termination of wait() and decode() was requested, + * then exit the loop after releasing the mutex. + */ + if (di->want_wait_terminate) { + srd_dbg("%s: %s: Will return from wait().", + di->inst_id, __func__); + g_mutex_unlock(&di->data_mutex); + goto err; + } + g_mutex_unlock(&di->data_mutex); } + PyGILState_Release(gstate); + Py_RETURN_NONE; + +err: + PyGILState_Release(gstate); + + return NULL; } /** @@ -662,40 +881,45 @@ static PyObject *Decoder_wait(PyObject *self, PyObject *args) */ static PyObject *Decoder_has_channel(PyObject *self, PyObject *args) { - int idx, max_idx; + int idx, count; struct srd_decoder_inst *di; - PyObject *py_channel; + PyGILState_STATE gstate; if (!self || !args) return NULL; + gstate = PyGILState_Ensure(); + if (!(di = srd_inst_find_by_obj(NULL, self))) { PyErr_SetString(PyExc_Exception, "decoder instance not found"); - return NULL; + goto err; } - /* Parse the argument of self.has_channel() into 'py_channel'. */ - if (!PyArg_ParseTuple(args, "O", &py_channel)) { + /* + * Get the integer argument of self.has_channel(). Check for + * the range of supported PD input channel numbers. + */ + if (!PyArg_ParseTuple(args, "i", &idx)) { /* Let Python raise this exception. */ - return NULL; + goto err; } - if (!PyLong_Check(py_channel)) { - PyErr_SetString(PyExc_Exception, "channel index not a number"); - return NULL; + count = g_slist_length(di->decoder->channels) + + g_slist_length(di->decoder->opt_channels); + if (idx < 0 || idx >= count) { + srd_err("Invalid index %d, PD channel count %d.", idx, count); + PyErr_SetString(PyExc_IndexError, "invalid channel index"); + goto err; } - idx = PyLong_AsLong(py_channel); - max_idx = g_slist_length(di->decoder->channels) - + g_slist_length(di->decoder->opt_channels) - 1; - - if (idx < 0 || idx > max_idx) { - srd_err("Invalid channel index %d/%d.", idx, max_idx); - PyErr_SetString(PyExc_Exception, "invalid channel"); - return NULL; - } + PyGILState_Release(gstate); return (di->dec_channelmap[idx] == -1) ? Py_False : Py_True; + +err: + PyGILState_Release(gstate); + + return NULL; } static PyMethodDef Decoder_methods[] = { @@ -726,11 +950,20 @@ SRD_PRIV PyObject *srd_Decoder_type_new(void) { Py_tp_new, (void *)&PyType_GenericNew }, { 0, NULL } }; + PyObject *py_obj; + PyGILState_STATE gstate; + + gstate = PyGILState_Ensure(); + spec.name = "sigrokdecode.Decoder"; spec.basicsize = sizeof(srd_Decoder); spec.itemsize = 0; spec.flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE; spec.slots = slots; - return PyType_FromSpec(&spec); + py_obj = PyType_FromSpec(&spec); + + PyGILState_Release(gstate); + + return py_obj; }