* Place - Suite 330, Boston, MA 02111-1307, USA.
*/
+#include <string.h>
#include <unistd.h>
#include <lttng/lttng.h>
#include "channel.h"
#include "kernel-ctl.h"
+#include "ust-ctl.h"
#include "utils.h"
/*
* Return allocated channel attributes.
*/
-static struct lttng_channel *init_default_attr(int dom, char *name)
+static struct lttng_channel *init_default_attr(int dom)
{
struct lttng_channel *chan;
goto error_alloc;
}
- if (snprintf(chan->name, sizeof(chan->name), "%s", name) < 0) {
- perror("snprintf channel name");
+ if (snprintf(chan->name, sizeof(chan->name), "%s",
+ DEFAULT_CHANNEL_NAME) < 0) {
+ perror("snprintf default channel name");
goto error;
}
chan->attr.num_subbuf = DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM;
chan->attr.output = DEFAULT_KERNEL_CHANNEL_OUTPUT;
break;
- /* TODO: add UST */
+ case LTTNG_DOMAIN_UST_PID:
+ chan->attr.subbuf_size = DEFAULT_UST_CHANNEL_SUBBUF_SIZE;
+ chan->attr.num_subbuf = DEFAULT_UST_CHANNEL_SUBBUF_NUM;
+ chan->attr.output = DEFAULT_UST_CHANNEL_OUTPUT;
+ break;
default:
goto error; /* Not implemented */
}
return NULL;
}
+/*
+ * Copy two ltt ust channel. Dst and src must be already allocated.
+ */
+int channel_ust_copy(struct ltt_ust_channel *dst,
+ struct ltt_ust_channel *src)
+{
+ struct ltt_ust_event *uevent, *new_uevent;
+
+ memcpy(dst, src, sizeof(struct ltt_ust_channel));
+ CDS_INIT_LIST_HEAD(&dst->events.head);
+
+ cds_list_for_each_entry(uevent, &src->events.head, list) {
+ new_uevent = malloc(sizeof(struct ltt_ust_event));
+ if (new_uevent == NULL) {
+ perror("malloc ltt_ust_event");
+ goto error;
+ }
+
+ memcpy(new_uevent, uevent, sizeof(struct ltt_ust_event));
+ cds_list_add(&new_uevent->list, &dst->events.head);
+ dst->events.count++;
+ }
+
+ return 0;
+
+error:
+ return -1;
+}
+
/*
* Disable kernel channel of the kernel session.
*/
* Create kernel channel of the kernel session and notify kernel thread.
*/
int channel_kernel_create(struct ltt_kernel_session *ksession,
- char *channel_name, struct lttng_channel *chan, int kernel_pipe)
+ struct lttng_channel *chan, int kernel_pipe)
{
int ret;
struct lttng_channel *attr = chan;
/* Creating channel attributes if needed */
if (attr == NULL) {
- attr = init_default_attr(LTTNG_DOMAIN_KERNEL, channel_name);
+ attr = init_default_attr(LTTNG_DOMAIN_KERNEL);
if (attr == NULL) {
ret = LTTCOMM_FATAL;
goto error;
error:
return ret;
}
+
+/*
+ * Create UST channel and enable it on the tracer.
+ */
+int channel_ust_create(struct ltt_ust_session *usession,
+ struct lttng_channel *chan, int sock)
+{
+ int ret;
+ struct lttng_channel *attr = chan;
+
+ /* Creating channel attributes if needed */
+ if (attr == NULL) {
+ attr = init_default_attr(LTTNG_DOMAIN_UST_PID);
+ if (attr == NULL) {
+ ret = LTTCOMM_FATAL;
+ goto error;
+ }
+ }
+
+ ret = ustctl_create_channel(sock, usession, attr);
+ if (ret < 0) {
+ ret = LTTCOMM_UST_CHAN_FAIL;
+ goto error;
+ }
+
+ DBG2("Channel %s UST create successfully for sock:%d", attr->name, sock);
+
+ ret = LTTCOMM_OK;
+
+error:
+ return ret;
+}
+
+/*
+ * Enable UST channel on the tracer.
+ */
+int channel_ust_enable(struct ltt_ust_session *usession,
+ struct ltt_ust_channel *uchan, int sock)
+{
+ int ret;
+ ret = LTTCOMM_OK;
+
+ ret = ustctl_enable_channel(sock, usession, uchan);
+ if (ret < 0) {
+ ret = LTTCOMM_UST_CHAN_FAIL;
+ goto error;
+ }
+
+ ret = LTTCOMM_OK;
+
+error:
+ return ret;
+}
+
+/*
+ * Disable UST channel on the tracer.
+ */
+int channel_ust_disable(struct ltt_ust_session *usession,
+ struct ltt_ust_channel *uchan, int sock)
+{
+ int ret;
+ ret = LTTCOMM_OK;
+
+ ret = ustctl_disable_channel(sock, usession, uchan);
+ if (ret < 0) {
+ ret = LTTCOMM_UST_CHAN_FAIL;
+ goto error;
+ }
+
+ ret = LTTCOMM_OK;
+
+error:
+ return ret;
+}