X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Ftrigger.c;h=ad0d5df1ba9c26644f8ee08bb61245c0d244392b;hp=132fda138912ef8ac264f6452f274614c1b19eca;hb=b7fc068d873bcfc93761f418bfefe8c928c33a59;hpb=91c96f622ad9eadbf44a63b55289f673be9cf90e

diff --git a/src/common/trigger.c b/src/common/trigger.c
index 132fda138..ad0d5df1b 100644
--- a/src/common/trigger.c
+++ b/src/common/trigger.c
@@ -7,9 +7,12 @@
 
 #include <lttng/trigger/trigger-internal.h>
 #include <lttng/condition/condition-internal.h>
-#include <lttng/condition/event-rule.h>
+#include <lttng/condition/on-event-internal.h>
+#include <lttng/condition/on-event.h>
+#include <lttng/condition/on-event-internal.h>
 #include <lttng/condition/buffer-usage.h>
 #include <lttng/event-rule/event-rule-internal.h>
+#include <lttng/event-expr-internal.h>
 #include <lttng/action/action-internal.h>
 #include <common/credentials.h>
 #include <common/payload.h>
@@ -22,7 +25,7 @@
 #include <inttypes.h>
 
 LTTNG_HIDDEN
-bool lttng_trigger_validate(struct lttng_trigger *trigger)
+bool lttng_trigger_validate(const struct lttng_trigger *trigger)
 {
 	bool valid;
 
@@ -83,14 +86,12 @@ struct lttng_condition *lttng_trigger_get_condition(
 	return trigger ? trigger->condition : NULL;
 }
 
-LTTNG_HIDDEN
 const struct lttng_condition *lttng_trigger_get_const_condition(
 		const struct lttng_trigger *trigger)
 {
-	return trigger->condition;
+	return trigger ? trigger->condition : NULL;
 }
 
-
 /*
  * Note: the lack of reference counting 'get' on the action object is normal.
  * This API was exposed as such in 2.11. The client is not expected to call
@@ -102,11 +103,10 @@ struct lttng_action *lttng_trigger_get_action(
 	return trigger ? trigger->action : NULL;
 }
 
-LTTNG_HIDDEN
 const struct lttng_action *lttng_trigger_get_const_action(
 		const struct lttng_trigger *trigger)
 {
-	return trigger->action;
+	return trigger ? trigger->action : NULL;
 }
 
 static void trigger_destroy_ref(struct urcu_ref *ref)
@@ -908,9 +908,9 @@ enum lttng_domain_type lttng_trigger_get_underlying_domain_type_restriction(
 		/* Apply to any domain. */
 		type = LTTNG_DOMAIN_NONE;
 		break;
-	case LTTNG_CONDITION_TYPE_EVENT_RULE_HIT:
+	case LTTNG_CONDITION_TYPE_ON_EVENT:
 		/* Return the domain of the event rule. */
-		c_status = lttng_condition_event_rule_get_rule(
+		c_status = lttng_condition_on_event_get_rule(
 				trigger->condition, &event_rule);
 		assert(c_status == LTTNG_CONDITION_STATUS_OK);
 		type = lttng_event_rule_get_domain_type(event_rule);
@@ -928,3 +928,112 @@ enum lttng_domain_type lttng_trigger_get_underlying_domain_type_restriction(
 
 	return type;
 }
+
+/*
+ * Generate 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)
+{
+	enum lttng_error_code ret;
+	struct lttng_condition *condition = NULL;
+
+	condition = lttng_trigger_get_condition(trigger);
+	if (!condition) {
+		ret = LTTNG_ERR_INVALID_TRIGGER;
+		goto end;
+	}
+
+	switch (lttng_condition_get_type(condition)) {
+	case LTTNG_CONDITION_TYPE_ON_EVENT:
+	{
+		struct lttng_event_rule *event_rule;
+		const enum lttng_condition_status condition_status =
+				lttng_condition_on_event_borrow_rule_mutable(
+					condition, &event_rule);
+
+		assert(condition_status == LTTNG_CONDITION_STATUS_OK);
+
+		/* Generate the filter bytecode. */
+		ret = lttng_event_rule_generate_filter_bytecode(
+				event_rule, creds);
+		if (ret != LTTNG_OK) {
+			goto end;
+		}
+
+		/* Generate the capture bytecode. */
+		ret = lttng_condition_on_event_generate_capture_descriptor_bytecode(
+				condition);
+		if (ret != LTTNG_OK) {
+			goto end;
+		}
+
+		ret = LTTNG_OK;
+		break;
+	}
+	default:
+		ret = LTTNG_OK;
+		break;
+	}
+end:
+	return ret;
+}
+
+LTTNG_HIDDEN
+struct lttng_trigger *lttng_trigger_copy(const struct lttng_trigger *trigger)
+{
+	int ret;
+	struct lttng_payload copy_buffer;
+	struct lttng_trigger *copy = NULL;
+
+	lttng_payload_init(&copy_buffer);
+
+	ret = lttng_trigger_serialize(trigger, &copy_buffer);
+	if (ret < 0) {
+		goto end;
+	}
+
+	{
+		struct lttng_payload_view view =
+				lttng_payload_view_from_payload(
+						&copy_buffer, 0, -1);
+		ret = lttng_trigger_create_from_payload(
+				&view, &copy);
+		if (ret < 0) {
+			copy = NULL;
+			goto end;
+		}
+	}
+
+end:
+	lttng_payload_reset(&copy_buffer);
+	return copy;
+}
+
+LTTNG_HIDDEN
+bool lttng_trigger_needs_tracer_notifier(const struct lttng_trigger *trigger)
+{
+	bool needs_tracer_notifier = false;
+	const struct lttng_condition *condition =
+			lttng_trigger_get_const_condition(trigger);
+
+	switch (lttng_condition_get_type(condition)) {
+	case LTTNG_CONDITION_TYPE_ON_EVENT:
+		needs_tracer_notifier = true;
+		goto end;
+	case LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE:
+	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
+	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
+	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING:
+	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED:
+		goto end;
+	case LTTNG_CONDITION_TYPE_UNKNOWN:
+	default:
+		abort();
+	}
+end:
+	return needs_tracer_notifier;
+}