X-Git-Url: https://sigrok.org/gitweb/?p=libsigrokdecode.git;a=blobdiff_plain;f=decoder.c;h=83735a7ec3442ae30a199393b376db0b5a1d6836;hp=f242ffedc770174a2a534576f3fd0436ab8a0d51;hb=fa12a21e3c779df4e33dcfe394e2ded3f96028ce;hpb=2086c68463fef416fd9a48dac5e1aa7fa593308d

diff --git a/decoder.c b/decoder.c
index f242ffe..83735a7 100644
--- a/decoder.c
+++ b/decoder.c
@@ -137,12 +137,12 @@ int srd_load_decoder(const char *name, struct srd_decoder **dec)
 	int alen, ret, i;
 	char **ann;
 
-	srd_dbg("srd: loading module '%s'", name);
+	srd_dbg("Loading module '%s'.", name);
 
 	py_basedec = py_method = py_attr = NULL;
 
 	if (!(d = g_try_malloc0(sizeof(struct srd_decoder)))) {
-		srd_dbg("srd: Failed to malloc struct srd_decoder");
+		srd_dbg("Failed to malloc struct srd_decoder.");
 		ret = SRD_ERR_MALLOC;
 		goto err_out;
 	}
@@ -164,7 +164,7 @@ int srd_load_decoder(const char *name, struct srd_decoder **dec)
 	}
 
 	if (!(py_basedec = PyObject_GetAttrString(mod_sigrokdecode, "Decoder"))) {
-		srd_dbg("srd: sigrokdecode module not loaded");
+		srd_dbg("sigrokdecode module not loaded.");
 		goto err_out;
 	}
 
@@ -173,7 +173,7 @@ int srd_load_decoder(const char *name, struct srd_decoder **dec)
 				"a subclass of sigrokdecode.Decoder.", name);
 		goto err_out;
 	}
-	Py_DecRef(py_basedec);
+	Py_CLEAR(py_basedec);
 
 	/* Check for a proper start() method. */
 	if (!PyObject_HasAttrString(d->py_dec, "start")) {
@@ -187,7 +187,7 @@ int srd_load_decoder(const char *name, struct srd_decoder **dec)
 				"is not a method.", name);
 		goto err_out;
 	}
-	Py_DecRef(py_method);
+	Py_CLEAR(py_method);
 
 	/* Check for a proper decode() method. */
 	if (!PyObject_HasAttrString(d->py_dec, "decode")) {
@@ -201,7 +201,7 @@ int srd_load_decoder(const char *name, struct srd_decoder **dec)
 				"is not a method.", name);
 		goto err_out;
 	}
-	Py_DecRef(py_method);
+	Py_CLEAR(py_method);
 
 	/* If present, options must be a dictionary. */
 	if (PyObject_HasAttrString(d->py_dec, "options")) {
@@ -209,6 +209,7 @@ int srd_load_decoder(const char *name, struct srd_decoder **dec)
 		if (!PyDict_Check(py_attr)) {
 			srd_err("Protocol decoder %s options attribute is not "
 					"a dictionary.", d->name);
+			Py_DecRef(py_attr);
 			goto err_out;
 		}
 		Py_DecRef(py_attr);
@@ -303,16 +304,45 @@ char *srd_decoder_doc(struct srd_decoder *dec)
 }
 
 
+static void free_probes(GSList *probelist)
+{
+	GSList *l;
+	struct srd_probe *p;
+
+	if (probelist == NULL)
+		return;
+
+	for (l = probelist; l; l = l->next) {
+		p = l->data;
+		g_free(p->id);
+		g_free(p->name);
+		g_free(p->desc);
+		g_free(p);
+	}
+	g_slist_free(probelist);
+
+}
+
 /**
  * Unload decoder module.
  *
- * @param dec The decoder struct to be unloaded.
+ * @param dec The struct srd_decoder to be unloaded.
  *
  * @return SRD_OK upon success, a (negative) error code otherwise.
  */
 int srd_unload_decoder(struct srd_decoder *dec)
 {
 
+	srd_dbg("unloading decoder %s", dec->name);
+
+	/* Since any instances of this decoder need to be released as well,
+	 * but they could be anywhere in the stack, just free the entire
+	 * stack. A frontend reloading a decoder thus has to restart all
+	 * instances, and rebuild the stack. */
+	srd_instance_free_all(NULL);
+
+	free_probes(dec->probes);
+	free_probes(dec->extra_probes);
 	g_free(dec->id);
 	g_free(dec->name);
 	g_free(dec->longname);
@@ -325,7 +355,9 @@ int srd_unload_decoder(struct srd_decoder *dec)
 	if (dec->outputformats != NULL)
 		g_slist_free(dec->outputformats);
 
+	/* The module's Decoder class. */
 	Py_XDECREF(dec->py_dec);
+	/* The module itself. */
 	Py_XDECREF(dec->py_mod);
 
 	/* TODO: (g_)free dec itself? */
@@ -350,9 +382,6 @@ int srd_load_all_decoders(void)
 		/* The decoder name is the PD directory name (e.g. "i2c"). */
 		decodername = g_strdup(direntry);
 
-		if (!(dec = g_try_malloc(sizeof(struct srd_decoder))))
-			return SRD_ERR_MALLOC;
-
 		if ((ret = srd_load_decoder(decodername, &dec)) == SRD_OK) {
 			/* Append it to the list of supported/loaded decoders. */
 			pd_list = g_slist_append(pd_list, dec);