#include <lttng/session-internal.h>
#include <lttng/session-descriptor-internal.h>
#include <lttng/destruction-handle.h>
+#include <lttng/tracker-internal.h>
#include "filter/filter-ast.h"
#include "filter/filter-parser.h"
return lttng_ctl_ask_sessiond(&lsm, NULL);
}
-/*
- * Add PID to session tracker.
- * Return 0 on success else a negative LTTng error code.
- */
-int lttng_track_pid(struct lttng_handle *handle, int pid)
-{
- struct lttcomm_session_msg lsm;
-
- /* NULL arguments are forbidden. No default values. */
- if (handle == NULL) {
- return -LTTNG_ERR_INVALID;
- }
-
- memset(&lsm, 0, sizeof(lsm));
-
- lsm.cmd_type = LTTNG_TRACK_PID;
- lsm.u.pid_tracker.pid = pid;
-
- COPY_DOMAIN_PACKED(lsm.domain, handle->domain);
-
- lttng_ctl_copy_string(lsm.session.name, handle->session_name,
- sizeof(lsm.session.name));
-
- return lttng_ctl_ask_sessiond(&lsm, NULL);
-}
-
-/*
- * Remove PID from session tracker.
- * Return 0 on success else a negative LTTng error code.
- */
-int lttng_untrack_pid(struct lttng_handle *handle, int pid)
-{
- struct lttcomm_session_msg lsm;
-
- /* NULL arguments are forbidden. No default values. */
- if (handle == NULL) {
- return -LTTNG_ERR_INVALID;
- }
-
- memset(&lsm, 0, sizeof(lsm));
-
- lsm.cmd_type = LTTNG_UNTRACK_PID;
- lsm.u.pid_tracker.pid = pid;
-
- COPY_DOMAIN_PACKED(lsm.domain, handle->domain);
-
- lttng_ctl_copy_string(lsm.session.name, handle->session_name,
- sizeof(lsm.session.name));
-
- return lttng_ctl_ask_sessiond(&lsm, NULL);
-}
-
/*
* Lists all available tracepoints of domain.
* Sets the contents of the events array.
/* Set number of events and free command header */
nb_events = cmd_header->nb_events;
if (nb_events > INT_MAX) {
- ret = -EOVERFLOW;
+ ret = -LTTNG_ERR_OVERFLOW;
goto end;
}
free(cmd_header);
/*
* [OBSOLETE]
*/
+int lttng_enable_consumer(struct lttng_handle *handle);
int lttng_enable_consumer(struct lttng_handle *handle)
{
return -ENOSYS;
/*
* [OBSOLETE]
*/
+int lttng_disable_consumer(struct lttng_handle *handle);
int lttng_disable_consumer(struct lttng_handle *handle)
{
return -ENOSYS;
/*
* [OBSOLETE]
*/
+int _lttng_create_session_ext(const char *name, const char *url,
+ const char *datetime);
int _lttng_create_session_ext(const char *name, const char *url,
const char *datetime)
{
}
/*
- * List PIDs in the tracker.
+ * List IDs in the tracker.
*
- * enabled is set to whether the PID tracker is enabled.
- * pids is set to an allocated array of PIDs currently tracked. On
- * success, pids must be freed by the caller.
- * nr_pids is set to the number of entries contained by the pids array.
+ * tracker_type is the type of tracker.
+ * ids is set to an allocated array of IDs currently tracked. On
+ * success, ids and contained ids must be freed/destroy by the caller.
+ * nr_ids is set to the number of entries contained by the ids array.
*
* Returns 0 on success, else a negative LTTng error code.
*/
-int lttng_list_tracker_pids(struct lttng_handle *handle,
- int *_enabled, int32_t **_pids, size_t *_nr_pids)
+int lttng_list_tracker_ids(struct lttng_handle *handle,
+ enum lttng_tracker_type tracker_type,
+ struct lttng_tracker_ids **_ids)
{
- int ret;
- int enabled = 1;
+ int ret, i;
struct lttcomm_session_msg lsm;
- size_t nr_pids;
- int32_t *pids = NULL;
+ struct lttcomm_tracker_command_header *cmd_header = NULL;
+ char *cmd_payload = NULL, *p;
+ size_t cmd_header_len;
+ size_t nr_ids = 0;
+ struct lttng_tracker_ids *ids = NULL;
if (handle == NULL) {
return -LTTNG_ERR_INVALID;
}
memset(&lsm, 0, sizeof(lsm));
- lsm.cmd_type = LTTNG_LIST_TRACKER_PIDS;
+ lsm.cmd_type = LTTNG_LIST_TRACKER_IDS;
+ lsm.u.id_tracker_list.tracker_type = tracker_type;
lttng_ctl_copy_string(lsm.session.name, handle->session_name,
sizeof(lsm.session.name));
COPY_DOMAIN_PACKED(lsm.domain, handle->domain);
- ret = lttng_ctl_ask_sessiond(&lsm, (void **) &pids);
+ ret = lttng_ctl_ask_sessiond_fds_varlen(&lsm, NULL, 0, NULL, 0,
+ (void **) &cmd_payload, (void **) &cmd_header,
+ &cmd_header_len);
+ if (ret < 0) {
+ goto error;
+ }
+
+ /* Set number of tracker_id and free command header */
+ nr_ids = cmd_header->nb_tracker_id;
+ if (nr_ids > INT_MAX) {
+ ret = -LTTNG_ERR_OVERFLOW;
+ goto error;
+ }
+ free(cmd_header);
+ cmd_header = NULL;
+
+ ids = lttng_tracker_ids_create(nr_ids);
+ if (!ids) {
+ ret = -LTTNG_ERR_NOMEM;
+ goto error;
+ }
+
+ p = cmd_payload;
+ for (i = 0; i < nr_ids; i++) {
+ struct lttcomm_tracker_id_header *tracker_id;
+ struct lttng_tracker_id *id;
+ enum lttng_tracker_id_status status;
+
+ tracker_id = (struct lttcomm_tracker_id_header *) p;
+ p += sizeof(struct lttcomm_tracker_id_header);
+ id = lttng_tracker_ids_get_pointer_of_index(ids, i);
+ if (!id) {
+ ret = -LTTNG_ERR_INVALID;
+ goto error;
+ }
+
+ switch (tracker_id->type) {
+ case LTTNG_ID_ALL:
+ status = lttng_tracker_id_set_all(id);
+ break;
+ case LTTNG_ID_VALUE:
+ id->value = tracker_id->u.value;
+ status = lttng_tracker_id_set_value(
+ id, tracker_id->u.value);
+ break;
+ case LTTNG_ID_STRING:
+ status = lttng_tracker_id_set_string(id, p);
+ p += tracker_id->u.var_data_len;
+ break;
+ default:
+ goto error;
+ }
+
+ if (status != LTTNG_TRACKER_ID_STATUS_OK) {
+ ret = -LTTNG_ERR_INVALID;
+ goto error;
+ }
+ }
+ free(cmd_payload);
+ *_ids = ids;
+ return 0;
+
+error:
+ lttng_tracker_ids_destroy(ids);
+ free(cmd_payload);
+ free(cmd_header);
+ return ret;
+}
+
+/*
+ * List PIDs in the tracker.
+ *
+ * enabled is set to whether the PID tracker is enabled.
+ * pids is set to an allocated array of PIDs currently tracked. On
+ * success, pids must be freed by the caller.
+ * nr_pids is set to the number of entries contained by the pids array.
+ *
+ * Returns 0 on success, else a negative LTTng error code.
+ */
+int lttng_list_tracker_pids(struct lttng_handle *handle,
+ int *_enabled, int32_t **_pids, size_t *_nr_pids)
+{
+ struct lttng_tracker_ids *ids = NULL;
+ unsigned int nr_ids = 0;
+ int *pids = NULL;
+ int ret = 0, i;
+ enum lttng_tracker_id_status status;
+ const struct lttng_tracker_id *id;
+
+ ret = lttng_list_tracker_ids(handle, LTTNG_TRACKER_PID, &ids);
if (ret < 0) {
return ret;
}
- nr_pids = ret / sizeof(int32_t);
- if (nr_pids > 0 && !pids) {
- return -LTTNG_ERR_UNK;
+
+ status = lttng_tracker_ids_get_count(ids, &nr_ids);
+ if (status != LTTNG_TRACKER_ID_STATUS_OK) {
+ ret = -LTTNG_ERR_INVALID;
+ goto end;
}
- if (nr_pids == 1 && pids[0] == -1) {
- free(pids);
- pids = NULL;
- enabled = 0;
- nr_pids = 0;
+
+ if (nr_ids == 1) {
+ id = lttng_tracker_ids_get_at_index(ids, 0);
+ if (id && lttng_tracker_id_get_type(id) == LTTNG_ID_ALL) {
+ *_enabled = 0;
+ goto end;
+ }
+ }
+
+ *_enabled = 1;
+
+ pids = zmalloc(nr_ids * sizeof(*pids));
+ if (!pids) {
+ ret = -LTTNG_ERR_NOMEM;
+ goto end;
+ }
+ for (i = 0; i < nr_ids; i++) {
+ id = lttng_tracker_ids_get_at_index(ids, i);
+ status = lttng_tracker_id_get_value(id, &pids[i]);
+ if (status != LTTNG_TRACKER_ID_STATUS_OK) {
+ ret = -LTTNG_ERR_UNK;
+ goto end;
+ }
}
- *_enabled = enabled;
*_pids = pids;
- *_nr_pids = nr_pids;
- return 0;
+ *_nr_pids = nr_ids;
+end:
+ lttng_tracker_ids_destroy(ids);
+ if (ret < 0) {
+ free(pids);
+ }
+ return ret;
}
/*
return ret;
}
+static int lttng_track_untrack_id(struct lttng_handle *handle,
+ enum lttng_tracker_type tracker_type,
+ const struct lttng_tracker_id *id,
+ enum lttcomm_sessiond_command cmd)
+{
+ int ret;
+ struct lttcomm_session_msg lsm;
+ const char *var_data = NULL;
+ size_t var_data_len = 0;
+ int value;
+ enum lttng_tracker_id_status status;
+
+ /* NULL arguments are forbidden. No default values. */
+ if (handle == NULL) {
+ goto error;
+ }
+
+ memset(&lsm, 0, sizeof(lsm));
+
+ lsm.cmd_type = cmd;
+ lsm.u.id_tracker.tracker_type = tracker_type;
+ lsm.u.id_tracker.id_type = lttng_tracker_id_get_type(id);
+ switch (lsm.u.id_tracker.id_type) {
+ case LTTNG_ID_ALL:
+ break;
+ case LTTNG_ID_VALUE:
+ status = lttng_tracker_id_get_value(id, &value);
+ if (status != LTTNG_TRACKER_ID_STATUS_OK) {
+ goto error;
+ }
+ lsm.u.id_tracker.u.value = value;
+ break;
+ case LTTNG_ID_STRING:
+ status = lttng_tracker_id_get_string(id, &var_data);
+ if (status != LTTNG_TRACKER_ID_STATUS_OK) {
+ goto error;
+ }
+ var_data_len = strlen(var_data) + 1; /* Includes \0. */
+ lsm.u.id_tracker.u.var_len = var_data_len;
+ break;
+ default:
+ goto error;
+ }
+
+ COPY_DOMAIN_PACKED(lsm.domain, handle->domain);
+
+ lttng_ctl_copy_string(lsm.session.name, handle->session_name,
+ sizeof(lsm.session.name));
+
+ ret = lttng_ctl_ask_sessiond_varlen_no_cmd_header(
+ &lsm, (char *) var_data, var_data_len, NULL);
+ return ret;
+error:
+ return -LTTNG_ERR_INVALID;
+}
+
+/*
+ * Add ID to session tracker.
+ * Return 0 on success else a negative LTTng error code.
+ */
+int lttng_track_id(struct lttng_handle *handle,
+ enum lttng_tracker_type tracker_type,
+ const struct lttng_tracker_id *id)
+{
+ return lttng_track_untrack_id(handle, tracker_type, id, LTTNG_TRACK_ID);
+}
+
+/*
+ * Remove ID from session tracker.
+ * Return 0 on success else a negative LTTng error code.
+ */
+int lttng_untrack_id(struct lttng_handle *handle,
+ enum lttng_tracker_type tracker_type,
+ const struct lttng_tracker_id *id)
+{
+ return lttng_track_untrack_id(
+ handle, tracker_type, id, LTTNG_UNTRACK_ID);
+}
+
+/*
+ * Add PID to session tracker.
+ * Return 0 on success else a negative LTTng error code.
+ */
+int lttng_track_pid(struct lttng_handle *handle, int pid)
+{
+ int ret;
+ struct lttng_tracker_id *id = NULL;
+ enum lttng_tracker_id_status status;
+
+ id = lttng_tracker_id_create();
+ status = lttng_tracker_id_set_value(id, pid);
+ if (status == LTTNG_TRACKER_ID_STATUS_INVALID) {
+ ret = -LTTNG_ERR_INVALID;
+ goto error;
+ }
+
+ ret = lttng_track_id(handle, LTTNG_TRACKER_PID, id);
+error:
+ lttng_tracker_id_destroy(id);
+ return ret;
+}
+
+/*
+ * Remove PID from session tracker.
+ * Return 0 on success else a negative LTTng error code.
+ */
+int lttng_untrack_pid(struct lttng_handle *handle, int pid)
+{
+ int ret;
+ struct lttng_tracker_id *id = NULL;
+ enum lttng_tracker_id_status status;
+
+ id = lttng_tracker_id_create();
+ status = lttng_tracker_id_set_value(id, pid);
+ if (status == LTTNG_TRACKER_ID_STATUS_INVALID) {
+ ret = -LTTNG_ERR_INVALID;
+ goto error;
+ }
+
+ ret = lttng_untrack_id(handle, LTTNG_TRACKER_PID, id);
+error:
+ lttng_tracker_id_destroy(id);
+ return ret;
+}
+
/*
* lib constructor.
*/
projects / lttng-tools.git / blobdiff