#include <lttng/trigger/trigger.h>
#include <common/credentials.h>
+#include <common/dynamic-array.h>
#include <common/macros.h>
#include <common/optional.h>
#include <stdint.h>
char *name;
/* For now only the uid portion of the credentials is used. */
struct lttng_credentials creds;
+ struct {
+ enum lttng_trigger_firing_policy type;
+ uint64_t threshold;
+ uint64_t current_count;
+ } firing_policy;
/*
* Internal use only.
* The unique token passed to the tracer to identify an event-rule
LTTNG_OPTIONAL(uint64_t) tracer_token;
};
+struct lttng_triggers {
+ struct lttng_dynamic_pointer_array array;
+};
+
struct lttng_trigger_comm {
/*
* Credentials, only the uid portion is used for now.
uint32_t length;
/* Includes '\0' terminator. */
uint32_t name_length;
+ /* Firing policy. */
+ /* Maps to enum lttng_trigger_firing_policy. */
+ uint8_t firing_policy_type;
+ uint64_t firing_policy_threshold;
/* A null-terminated name, a condition, and an action follow. */
char payload[];
} LTTNG_PACKED;
+struct lttng_triggers_comm {
+ uint32_t count;
+ uint32_t length;
+ /* Count * lttng_trigger_comm structure */
+ char payload[];
+};
+
LTTNG_HIDDEN
ssize_t lttng_trigger_create_from_payload(struct lttng_payload_view *view,
struct lttng_trigger **trigger);
LTTNG_HIDDEN
-int lttng_trigger_serialize(struct lttng_trigger *trigger,
+int lttng_trigger_serialize(const struct lttng_trigger *trigger,
struct lttng_payload *payload);
LTTNG_HIDDEN
-const struct lttng_condition *lttng_trigger_get_const_condition(
- const struct lttng_trigger *trigger);
-
-LTTNG_HIDDEN
-const struct lttng_action *lttng_trigger_get_const_action(
- const struct lttng_trigger *trigger);
-
-LTTNG_HIDDEN
-bool lttng_trigger_validate(struct lttng_trigger *trigger);
+bool lttng_trigger_validate(const struct lttng_trigger *trigger);
LTTNG_HIDDEN
int lttng_trigger_assign_name(
LTTNG_HIDDEN
void lttng_trigger_put(struct lttng_trigger *trigger);
+/*
+ * Allocate a new set of triggers.
+ * The returned object must be freed via lttng_triggers_destroy.
+ */
+LTTNG_HIDDEN
+struct lttng_triggers *lttng_triggers_create(void);
+
+/*
+ * Return the a pointer to a mutable element at index "index" of an
+ * lttng_triggers set.
+ *
+ * This differs from the public `lttng_triggers_get_at_index` in that
+ * the returned pointer to a mutable trigger.
+ *
+ * The ownership of the trigger set element is NOT transfered.
+ * The returned object can NOT be freed via lttng_trigger_destroy.
+ */
+LTTNG_HIDDEN
+struct lttng_trigger *lttng_triggers_borrow_mutable_at_index(
+ const struct lttng_triggers *triggers, unsigned int index);
+
+/*
+ * Add a trigger to the triggers set.
+ *
+ * A reference to the added trigger is acquired on behalf of the trigger set
+ * on success.
+ */
+LTTNG_HIDDEN
+int lttng_triggers_add(
+ struct lttng_triggers *triggers, struct lttng_trigger *trigger);
+
+/*
+ * Serialize a trigger set to an lttng_payload object.
+ * Return LTTNG_OK on success, negative lttng error code on error.
+ */
+LTTNG_HIDDEN
+int lttng_triggers_serialize(const struct lttng_triggers *triggers,
+ struct lttng_payload *payload);
+
+LTTNG_HIDDEN
+ssize_t lttng_triggers_create_from_payload(struct lttng_payload_view *view,
+ struct lttng_triggers **triggers);
+
LTTNG_HIDDEN
const struct lttng_credentials *lttng_trigger_get_credentials(
const struct lttng_trigger *trigger);
void lttng_trigger_set_credentials(struct lttng_trigger *trigger,
const struct lttng_credentials *creds);
+
+/*
+ * Fire the trigger.
+ * Increments the occurrence count.
+ */
+LTTNG_HIDDEN
+void lttng_trigger_fire(struct lttng_trigger *trigger);
+
+/*
+ * Check if the trigger would fire.
+ */
+LTTNG_HIDDEN
+bool lttng_trigger_should_fire(const struct lttng_trigger *trigger);
+
+/*
+ * Return the type of any underlying domain restriction. If no particular
+ * requirement is present, returns LTTNG_DOMAIN_NONE.
+ */
+LTTNG_HIDDEN
+enum lttng_domain_type lttng_trigger_get_underlying_domain_type_restriction(
+ const struct lttng_trigger *trigger);
+
+/*
+ * Generate any bytecode related to the trigger.
+ * On success LTTNG_OK. On error, returns lttng_error code.
+ */
+LTTNG_HIDDEN
+enum lttng_error_code lttng_trigger_generate_bytecode(
+ struct lttng_trigger *trigger,
+ const struct lttng_credentials *creds);
+
+LTTNG_HIDDEN
+struct lttng_trigger *lttng_trigger_copy(const struct lttng_trigger *trigger);
+
+/*
+ * A given trigger needs a tracer notifier if
+ * it has an event-rule condition,
+ * AND
+ * it has one or more sessiond-execution action.
+ */
+LTTNG_HIDDEN
+bool lttng_trigger_needs_tracer_notifier(const struct lttng_trigger *trigger);
+
#endif /* LTTNG_TRIGGER_INTERNAL_H */