#include "libsigrok.h"
#include "libsigrok-internal.h"
-/* Message logging helpers with subsystem-specific prefix string. */
-#define LOG_PREFIX "session: "
-#define sr_log(l, s, args...) sr_log(l, LOG_PREFIX s, ## args)
-#define sr_spew(s, args...) sr_spew(LOG_PREFIX s, ## args)
-#define sr_dbg(s, args...) sr_dbg(LOG_PREFIX s, ## args)
-#define sr_info(s, args...) sr_info(LOG_PREFIX s, ## args)
-#define sr_warn(s, args...) sr_warn(LOG_PREFIX s, ## args)
-#define sr_err(s, args...) sr_err(LOG_PREFIX s, ## args)
+/** @cond PRIVATE */
+#define LOG_PREFIX "session"
+/** @endcond */
/**
* @file
struct source {
int timeout;
- sr_receive_data_callback_t cb;
+ sr_receive_data_callback cb;
void *cb_data;
/* This is used to keep track of the object (fd, pollfd or channel) which is
};
struct datafeed_callback {
- sr_datafeed_callback_t cb;
+ sr_datafeed_callback cb;
void *cb_data;
};
* @todo Should it use the file-global "session" variable or take an argument?
* The same question applies to all the other session functions.
*
- * @return A pointer to the newly allocated session, or NULL upon errors.
+ * @retval NULL Error.
+ * @retval other A pointer to the newly allocated session.
*/
SR_API struct sr_session *sr_session_new(void)
{
}
session->source_timeout = -1;
+ session->running = FALSE;
session->abort_session = FALSE;
g_mutex_init(&session->stop_mutex);
/**
* Destroy the current session.
- *
* This frees up all memory used by the session.
*
- * @return SR_OK upon success, SR_ERR_BUG if no session exists.
+ * @retval SR_OK Success.
+ * @retval SR_ERR_BUG No session exists.
*/
SR_API int sr_session_destroy(void)
{
* The session itself (i.e., the struct sr_session) is not free'd and still
* exists after this function returns.
*
- * @return SR_OK upon success, SR_ERR_BUG if no session exists.
+ * @retval SR_OK Success.
+ * @retval SR_ERR_BUG No session exists.
*/
SR_API int sr_session_dev_remove_all(void)
{
* be NULL. Also, sdi->driver and sdi->driver->dev_open must
* not be NULL.
*
- * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments.
+ * @retval SR_OK Success.
+ * @retval SR_ERR_ARG Invalid argument.
+ * @retval SR_ERR_BUG No session exists.
*/
SR_API int sr_session_dev_add(const struct sr_dev_inst *sdi)
{
+ int ret;
if (!sdi) {
sr_err("%s: sdi was NULL", __func__);
session->devs = g_slist_append(session->devs, (gpointer)sdi);
+ if (session->running) {
+ /* Adding a device to a running session. Commit settings
+ * and start acquisition on that device now. */
+ if ((ret = sr_config_commit(sdi)) != SR_OK) {
+ sr_err("Failed to commit device settings before "
+ "starting acquisition in running session (%s)",
+ sr_strerror(ret));
+ return ret;
+ }
+ if ((ret = sdi->driver->dev_acquisition_start(sdi,
+ (void *)sdi)) != SR_OK) {
+ sr_err("Failed to start acquisition of device in "
+ "running session (%s)", sr_strerror(ret));
+ return ret;
+ }
+ }
+
+ return SR_OK;
+}
+
+/**
+ * List all device instances attached to the current session.
+ *
+ * @param devlist A pointer where the device instance list will be
+ * stored on return. If no devices are in the session,
+ * this will be NULL. Each element in the list points
+ * to a struct sr_dev_inst *.
+ * The list must be freed by the caller, but not the
+ * elements pointed to.
+ *
+ * @retval SR_OK Success.
+ * @retval SR_ERR Invalid argument.
+ */
+SR_API int sr_session_dev_list(GSList **devlist)
+{
+
+ *devlist = NULL;
+
+ if (!session)
+ return SR_ERR;
+
+ *devlist = g_slist_copy(session->devs);
+
return SR_OK;
}
/**
* Remove all datafeed callbacks in the current session.
*
- * @return SR_OK upon success, SR_ERR_BUG if no session exists.
+ * @retval SR_OK Success.
+ * @retval SR_ERR_BUG No session exists.
*/
SR_API int sr_session_datafeed_callback_remove_all(void)
{
* Must not be NULL.
* @param cb_data Opaque pointer passed in by the caller.
*
- * @return SR_OK upon success, SR_ERR_BUG if no session exists.
+ * @retval SR_OK Success.
+ * @retval SR_ERR_BUG No session exists.
*/
-SR_API int sr_session_datafeed_callback_add(sr_datafeed_callback_t cb, void *cb_data)
+SR_API int sr_session_datafeed_callback_add(sr_datafeed_callback cb, void *cb_data)
{
struct datafeed_callback *cb_struct;
* but driven by another scheduler, this can be used to poll the devices
* from within that scheduler.
*
- * @return SR_OK upon success, SR_ERR on errors.
+ * @param block If TRUE, this call will wait for any of the session's
+ * sources to fire an event on the file descriptors, or
+ * any of their timeouts to activate. In other words, this
+ * can be used as a select loop.
+ * If FALSE, all sources have their callback run, regardless
+ * of file descriptor or timeout status.
+ *
+ * @retval SR_OK Success.
+ * @retval SR_ERR Error occured.
*/
-SR_API int sr_session_iteration(gboolean block)
+static int sr_session_iteration(gboolean block)
{
unsigned int i;
int ret;
*
* There can only be one session at a time.
*
- * @return SR_OK upon success, SR_ERR upon errors.
+ * @retval SR_OK Success.
+ * @retval SR_ERR Error occured.
*/
SR_API int sr_session_start(void)
{
ret = SR_OK;
for (l = session->devs; l; l = l->next) {
sdi = l->data;
+ if ((ret = sr_config_commit(sdi)) != SR_OK) {
+ sr_err("Failed to commit device settings before "
+ "starting acquisition (%s)", sr_strerror(ret));
+ break;
+ }
if ((ret = sdi->driver->dev_acquisition_start(sdi, sdi)) != SR_OK) {
sr_err("%s: could not start an acquisition "
- "(%d)", __func__, ret);
+ "(%s)", __func__, sr_strerror(ret));
break;
}
}
/**
* Run the session.
*
- * @return SR_OK upon success, SR_ERR_BUG upon errors.
+ * @retval SR_OK Success.
+ * @retval SR_ERR_BUG Error occured.
*/
SR_API int sr_session_run(void)
{
"cannot be run without devices.", __func__);
return SR_ERR_BUG;
}
+ session->running = TRUE;
sr_info("Running.");
* This must be called from within the session thread, to prevent freeing
* resources that the session thread will try to use.
*
- * @return SR_OK upon success, SR_ERR_BUG if no session exists.
+ * @retval SR_OK Success.
+ * @retval SR_ERR_BUG No session exists.
+ *
+ * @private
*/
SR_PRIV int sr_session_stop_sync(void)
{
sdi->driver->dev_acquisition_stop(sdi, sdi);
}
}
+ session->running = FALSE;
return SR_OK;
}
* to wait for the session thread to return before assuming that the session is
* completely decommissioned.
*
- * @return SR_OK upon success, SR_ERR_BUG if no session exists.
+ * @retval SR_OK Success.
+ * @retval SR_ERR_BUG No session exists.
*/
SR_API int sr_session_stop(void)
{
break;
case SR_DF_LOGIC:
logic = packet->payload;
- sr_dbg("bus: Received SR_DF_LOGIC packet (%" PRIu64 " bytes).",
- logic->length);
+ sr_dbg("bus: Received SR_DF_LOGIC packet (%" PRIu64 " bytes, "
+ "unitsize = %d).", logic->length, logic->unitsize);
break;
case SR_DF_ANALOG:
analog = packet->payload;
* @param sdi TODO.
* @param packet The datafeed packet to send to the session bus.
*
- * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments.
+ * @retval SR_OK Success.
+ * @retval SR_ERR_ARG Invalid argument.
*
* @private
*/
* Add an event source for a file descriptor.
*
* @param pollfd The GPollFD.
- * @param timeout Max time to wait before the callback is called, ignored if 0.
+ * @param[in] timeout Max time to wait before the callback is called,
+ * ignored if 0.
* @param cb Callback function to add. Must not be NULL.
* @param cb_data Data for the callback function. Can be NULL.
* @param poll_object TODO.
*
- * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or
- * SR_ERR_MALLOC upon memory allocation errors.
+ * @retval SR_OK Success.
+ * @retval SR_ERR_ARG Invalid argument.
+ * @retval SR_ERR_MALLOC Memory allocation error.
*/
static int _sr_session_source_add(GPollFD *pollfd, int timeout,
- sr_receive_data_callback_t cb, void *cb_data, gintptr poll_object)
+ sr_receive_data_callback cb, void *cb_data, gintptr poll_object)
{
struct source *new_sources, *s;
GPollFD *new_pollfds;
* @param cb Callback function to add. Must not be NULL.
* @param cb_data Data for the callback function. Can be NULL.
*
- * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or
- * SR_ERR_MALLOC upon memory allocation errors.
+ * @retval SR_OK Success.
+ * @retval SR_ERR_ARG Invalid argument.
+ * @retval SR_ERR_MALLOC Memory allocation error.
*/
SR_API int sr_session_source_add(int fd, int events, int timeout,
- sr_receive_data_callback_t cb, void *cb_data)
+ sr_receive_data_callback cb, void *cb_data)
{
GPollFD p;
* @param cb Callback function to add. Must not be NULL.
* @param cb_data Data for the callback function. Can be NULL.
*
- * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or
- * SR_ERR_MALLOC upon memory allocation errors.
+ * @retval SR_OK Success.
+ * @retval SR_ERR_ARG Invalid argument.
+ * @retval SR_ERR_MALLOC Memory allocation error.
*/
SR_API int sr_session_source_add_pollfd(GPollFD *pollfd, int timeout,
- sr_receive_data_callback_t cb, void *cb_data)
+ sr_receive_data_callback cb, void *cb_data)
{
return _sr_session_source_add(pollfd, timeout, cb,
cb_data, (gintptr)pollfd);
* @param cb Callback function to add. Must not be NULL.
* @param cb_data Data for the callback function. Can be NULL.
*
- * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or
- * SR_ERR_MALLOC upon memory allocation errors.
+ * @retval SR_OK Success.
+ * @retval SR_ERR_ARG Invalid argument.
+ * @retval SR_ERR_MALLOC Memory allocation error.
*/
SR_API int sr_session_source_add_channel(GIOChannel *channel, int events,
- int timeout, sr_receive_data_callback_t cb, void *cb_data)
+ int timeout, sr_receive_data_callback cb, void *cb_data)
{
GPollFD p;
*
* @todo Add more error checks and logging.
*
- * @param channel The channel for which the source should be removed.
+ * @param poll_object The channel for which the source should be removed.
*
- * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or
- * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon
- * internal errors.
+ * @retval SR_OK Success
+ * @retval SR_ERR_ARG Invalid arguments
+ * @retval SR_ERR_MALLOC Memory allocation error
+ * @retval SR_ERR_BUG Internal error
*/
static int _sr_session_source_remove(gintptr poll_object)
{
*
* @param fd The file descriptor for which the source should be removed.
*
- * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or
- * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon
- * internal errors.
+ * @retval SR_OK Success
+ * @retval SR_ERR_ARG Invalid argument
+ * @retval SR_ERR_MALLOC Memory allocation error.
+ * @retval SR_ERR_BUG Internal error.
*/
SR_API int sr_session_source_remove(int fd)
{
*
* @param channel The channel for which the source should be removed.
*
- * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or
- * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon
- * internal errors.
+ * @retval SR_OK Success.
+ * @retval SR_ERR_ARG Invalid argument.
+ * @retval SR_ERR_MALLOC Memory allocation error.
+ * @return SR_ERR_BUG Internal error.
*/
SR_API int sr_session_source_remove_channel(GIOChannel *channel)
{
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