X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Fevaluation.cpp;fp=src%2Fcommon%2Fevaluation.cpp;h=6b3e634947253812329f099770d2345f999622b1;hp=0000000000000000000000000000000000000000;hb=a6bc4ca9d659caf016ef932fcd944029737ac57c;hpb=97535efaa975ca52bf02c2d5e76351bfd2e3defa

diff --git a/src/common/evaluation.cpp b/src/common/evaluation.cpp
new file mode 100644
index 000000000..6b3e63494
--- /dev/null
+++ b/src/common/evaluation.cpp
@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
+ */
+
+#include <lttng/condition/condition-internal.h>
+#include <lttng/condition/evaluation-internal.h>
+#include <lttng/condition/buffer-usage-internal.h>
+#include <lttng/condition/session-consumed-size-internal.h>
+#include <lttng/condition/session-rotation-internal.h>
+#include <lttng/condition/event-rule-matches-internal.h>
+#include <common/macros.h>
+#include <common/error.h>
+#include <stdbool.h>
+
+void lttng_evaluation_init(struct lttng_evaluation *evaluation,
+		enum lttng_condition_type type)
+{
+	evaluation->type = type;
+}
+
+int lttng_evaluation_serialize(const struct lttng_evaluation *evaluation,
+		struct lttng_payload *payload)
+{
+	int ret;
+	struct lttng_evaluation_comm evaluation_comm = {
+		.type = (int8_t) evaluation->type
+	};
+
+	ret = lttng_dynamic_buffer_append(&payload->buffer, &evaluation_comm,
+			sizeof(evaluation_comm));
+	if (ret) {
+		goto end;
+	}
+
+	if (evaluation->serialize) {
+		ret = evaluation->serialize(evaluation, payload);
+		if (ret) {
+			goto end;
+		}
+	}
+end:
+	return ret;
+}
+
+ssize_t lttng_evaluation_create_from_payload(
+		const struct lttng_condition *condition,
+		struct lttng_payload_view *src_view,
+		struct lttng_evaluation **evaluation)
+{
+	ssize_t ret, evaluation_size = 0;
+	const struct lttng_evaluation_comm *evaluation_comm;
+	struct lttng_payload_view evaluation_comm_view =
+			lttng_payload_view_from_view(
+					src_view, 0, sizeof(*evaluation_comm));
+	struct lttng_payload_view evaluation_view =
+			lttng_payload_view_from_view(src_view,
+					sizeof(*evaluation_comm), -1);
+
+	if (!src_view || !evaluation) {
+		ret = -1;
+		goto end;
+	}
+
+	if (!lttng_payload_view_is_valid(&evaluation_comm_view)) {
+		ret = -1;
+		goto end;
+	}
+
+	evaluation_comm = (typeof(evaluation_comm)) evaluation_comm_view.buffer.data;
+	evaluation_size += sizeof(*evaluation_comm);
+
+	switch ((enum lttng_condition_type) evaluation_comm->type) {
+	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
+		ret = lttng_evaluation_buffer_usage_low_create_from_payload(
+				&evaluation_view, evaluation);
+		if (ret < 0) {
+			goto end;
+		}
+		evaluation_size += ret;
+		break;
+	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
+		ret = lttng_evaluation_buffer_usage_high_create_from_payload(
+				&evaluation_view, evaluation);
+		if (ret < 0) {
+			goto end;
+		}
+		evaluation_size += ret;
+		break;
+	case LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE:
+		ret = lttng_evaluation_session_consumed_size_create_from_payload(
+				&evaluation_view, evaluation);
+		if (ret < 0) {
+			goto end;
+		}
+		evaluation_size += ret;
+		break;
+	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING:
+		ret = lttng_evaluation_session_rotation_ongoing_create_from_payload(
+				&evaluation_view, evaluation);
+		if (ret < 0) {
+			goto end;
+		}
+		evaluation_size += ret;
+		break;
+	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED:
+		ret = lttng_evaluation_session_rotation_completed_create_from_payload(
+				&evaluation_view, evaluation);
+		if (ret < 0) {
+			goto end;
+		}
+		evaluation_size += ret;
+		break;
+	case LTTNG_CONDITION_TYPE_EVENT_RULE_MATCHES:
+		LTTNG_ASSERT(condition);
+		LTTNG_ASSERT(condition->type ==
+				LTTNG_CONDITION_TYPE_EVENT_RULE_MATCHES);
+		ret = lttng_evaluation_event_rule_matches_create_from_payload(
+				container_of(condition,
+						const struct lttng_condition_event_rule_matches,
+						parent),
+				&evaluation_view, evaluation);
+		if (ret < 0) {
+			goto end;
+		}
+		evaluation_size += ret;
+		break;
+	default:
+		ERR("Attempted to create evaluation of unknown type (%i)",
+				(int) evaluation_comm->type);
+		ret = -1;
+		goto end;
+	}
+
+	ret = evaluation_size;
+end:
+	return ret;
+}
+
+enum lttng_condition_type lttng_evaluation_get_type(
+		const struct lttng_evaluation *evaluation)
+{
+	return evaluation ? evaluation->type : LTTNG_CONDITION_TYPE_UNKNOWN;
+}
+
+void lttng_evaluation_destroy(struct lttng_evaluation *evaluation)
+{
+	if (!evaluation) {
+		return;
+	}
+
+	LTTNG_ASSERT(evaluation->destroy);
+	evaluation->destroy(evaluation);
+}