lttng: Add list-triggers command

[lttng-tools.git] / include / lttng / trigger / trigger.h

diff --git a/include/lttng/trigger/trigger.h b/include/lttng/trigger/trigger.h
index b8e6080d9519a7edaaab43ca291c7c45f56e685d..2a7d4e36bf1b1c26f94b2666f159259f89b60763 100644 (file)
--- a/include/lttng/trigger/trigger.h
+++ b/include/lttng/trigger/trigger.h
@@ -9,6 +9,7 @@
 #define LTTNG_TRIGGER_H
 
 #include <sys/types.h>
+#include <inttypes.h>
 
 struct lttng_action;
 struct lttng_condition;
@@ -35,6 +36,11 @@ enum lttng_trigger_status {
        LTTNG_TRIGGER_STATUS_PERMISSION_DENIED = -6,
 };
 
+enum lttng_trigger_firing_policy {
+       LTTNG_TRIGGER_FIRING_POLICY_EVERY_N = 0,
+       LTTNG_TRIGGER_FIRING_POLICY_ONCE_AFTER_N = 1,
+};
+
 /*
  * Create a trigger object associating a condition and an action.
  *
@@ -88,6 +94,9 @@ extern enum lttng_trigger_status lttng_trigger_get_owner_uid(
 extern struct lttng_condition *lttng_trigger_get_condition(
                struct lttng_trigger *trigger);
 
+const struct lttng_condition *lttng_trigger_get_const_condition(
+               const struct lttng_trigger *trigger);
+
 /*
  * Get the action of a trigger.
  *
@@ -98,6 +107,8 @@ extern struct lttng_condition *lttng_trigger_get_condition(
 extern struct lttng_action *lttng_trigger_get_action(
                struct lttng_trigger *trigger);
 
+const struct lttng_action *lttng_trigger_get_const_action(
+               const struct lttng_trigger *trigger);
 
 /*
  * Get the name of a trigger.
@@ -127,6 +138,37 @@ extern enum lttng_trigger_status lttng_trigger_get_name(
 extern enum lttng_trigger_status lttng_trigger_set_name(
                struct lttng_trigger *trigger, const char *name);
 
+/*
+ * Set the trigger firing policy.
+ *
+ * This is optional. By default a trigger is set to fire each time the
+ * associated condition occurs.
+ *
+ * Threshold is the number of times the condition must be hit before the policy
+ * is enacted.
+ *
+ * Return LTTNG_TRIGGER_STATUS_OK on success, LTTNG_TRIGGER_STATUS_INVALID
+ * if invalid parameters are passed.
+ */
+extern enum lttng_trigger_status lttng_trigger_set_firing_policy(
+               struct lttng_trigger *trigger,
+               enum lttng_trigger_firing_policy policy_type,
+               uint64_t threshold);
+
+/*
+ * Get the trigger firing policy.
+ *
+ * Threshold is the number of time the condition must be hit before the policy is
+ * enacted.
+ *
+ * Return LTTNG_TRIGGER_STATUS_OK on success, LTTNG_TRIGGER_STATUS_INVALID
+ * if invalid parameters are passed.
+ */
+extern enum lttng_trigger_status lttng_trigger_get_firing_policy(
+               const struct lttng_trigger *trigger,
+               enum lttng_trigger_firing_policy *policy_type,
+               uint64_t *threshold);
+
 /*
  * Destroy (frees) a trigger object.
  */
@@ -150,6 +192,19 @@ extern int lttng_register_trigger(struct lttng_trigger *trigger);
  */
 extern int lttng_unregister_trigger(struct lttng_trigger *trigger);
 
+/*
+ * List triggers for the current user.
+ *
+ * On success, a newly-allocated trigger set is returned.
+ *
+ * The trigger set must be destroyed by the caller (see
+ * lttng_triggers_destroy()).
+ *
+ * Returns LTTNG_OK on success, else a suitable LTTng error code.
+ */
+extern enum lttng_error_code lttng_list_triggers(
+               struct lttng_triggers **triggers);
+
 /*
  * Get a trigger from the set at a given index.
  *