#include <common/common.h>
#include <common/defaults.h>
+#include "buffer-registry.h"
#include "trace-ust.h"
/*
lus->id = session_id;
lus->start_trace = 0;
- /* Alloc UST domain hash tables */
- lus->domain_pid = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG);
- lus->domain_exec = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG);
+ /*
+ * Default buffer type. This can be changed through an enable channel
+ * requesting a different type. Note that this can only be changed once
+ * during the session lifetime which is at the first enable channel and
+ * only before start. The flag buffer_type_changed indicates the status.
+ */
+ lus->buffer_type = LTTNG_BUFFER_PER_PID;
+ /* Once set to 1, the buffer_type is immutable for the session. */
+ lus->buffer_type_changed = 0;
+ /* Init it in case it get used after allocation. */
+ CDS_INIT_LIST_HEAD(&lus->buffer_reg_uid_list);
/* Alloc UST global domain channels' HT */
lus->domain_global.channels = lttng_ht_new(0, LTTNG_HT_TYPE_STRING);
PERROR("snprintf UST consumer trace path");
goto error_path;
}
-
- /* Set session path */
- ret = snprintf(lus->pathname, PATH_MAX, "%s" DEFAULT_UST_TRACE_DIR,
- path);
- if (ret < 0) {
- PERROR("snprintf kernel traces path");
- goto error_path;
- }
}
DBG2("UST trace session create successful");
consumer_destroy_output(lus->consumer);
error_consumer:
lttng_ht_destroy(lus->domain_global.channels);
- lttng_ht_destroy(lus->domain_exec);
- lttng_ht_destroy(lus->domain_pid);
free(lus);
error:
return NULL;
struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *chan,
char *path)
{
- int ret;
struct ltt_ust_channel *luc;
assert(chan);
luc->events = lttng_ht_new(0, LTTNG_HT_TYPE_STRING);
luc->ctx = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG);
- /* Set trace output path */
- ret = snprintf(luc->pathname, PATH_MAX, "%s", path);
- if (ret < 0) {
- PERROR("asprintf ust create channel");
- goto error_free_channel;
- }
-
DBG2("Trace UST channel %s created", luc->name);
- return luc;
-
-error_free_channel:
- lttng_ht_destroy(luc->ctx);
- lttng_ht_destroy(luc->events);
- free(luc);
error:
- return NULL;
+ return luc;
}
/*
rcu_read_unlock();
}
-/*
- * Cleanup UST pid domain.
- */
-static void destroy_domain_pid(struct lttng_ht *ht)
-{
- int ret;
- struct lttng_ht_iter iter;
- struct ltt_ust_domain_pid *dpid;
-
- assert(ht);
-
- cds_lfht_for_each_entry(ht->ht, &iter.iter, dpid, node.node) {
- ret = lttng_ht_del(ht , &iter);
- assert(!ret);
- destroy_channels(dpid->channels);
- }
-
- lttng_ht_destroy(ht);
-}
-
-/*
- * Cleanup UST exec name domain.
- */
-static void destroy_domain_exec(struct lttng_ht *ht)
-{
- int ret;
- struct lttng_ht_iter iter;
- struct ltt_ust_domain_exec *dexec;
-
- assert(ht);
-
- cds_lfht_for_each_entry(ht->ht, &iter.iter, dexec, node.node) {
- ret = lttng_ht_del(ht , &iter);
- assert(!ret);
- destroy_channels(dexec->channels);
- }
-
- lttng_ht_destroy(ht);
-}
-
/*
* Cleanup UST global domain.
*/
*/
void trace_ust_destroy_session(struct ltt_ust_session *session)
{
+ struct buffer_reg_uid *reg, *sreg;
+
assert(session);
rcu_read_lock();
/* Cleaning up UST domain */
destroy_domain_global(&session->domain_global);
- destroy_domain_pid(session->domain_pid);
- destroy_domain_exec(session->domain_exec);
+
+ /* Cleanup UID buffer registry object(s). */
+ cds_list_for_each_entry_safe(reg, sreg, &session->buffer_reg_uid_list,
+ lnode) {
+ cds_list_del(®->lnode);
+ buffer_reg_uid_remove(reg);
+ buffer_reg_uid_destroy(reg, session->consumer);
+ }
consumer_destroy_output(session->consumer);
consumer_destroy_output(session->tmp_consumer);