/*
- * Copyright (C) 2019 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ * Copyright (C) 2019 Jérémie Galarneau <jeremie.galarneau@efficios.com>
*
- * This library is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License, version 2.1 only,
- * as published by the Free Software Foundation.
+ * SPDX-License-Identifier: LGPL-2.1-only
*
- * This library is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
- * for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this library; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef LTTNG_DESTRUCTION_HANDLE_H
extern "C" {
#endif
+/*
+ * Handle used to represent a specific instance of session destruction
+ * operation.
+ *
+ * See lttng_destroy_session_ext() in lttng/session.h.
+ */
struct lttng_destruction_handle;
+/*
+ * Negative values indicate errors. Values >= 0 indicate success.
+ */
enum lttng_destruction_handle_status {
+ /* Generic error. */
LTTNG_DESTRUCTION_HANDLE_STATUS_ERROR = -2,
+ /* Invalid parameters provided */
LTTNG_DESTRUCTION_HANDLE_STATUS_INVALID = -1,
+ /* Success. */
LTTNG_DESTRUCTION_HANDLE_STATUS_OK = 0,
+ /* Destruction operation completed successfully. */
LTTNG_DESTRUCTION_HANDLE_STATUS_COMPLETED = 1,
+ /* Operation timed out. */
LTTNG_DESTRUCTION_HANDLE_STATUS_TIMEOUT = 2,
};
+/*
+ * Destroy an lttng_destruction_session handle.
+ * The handle should be discarded after this call.
+ */
extern void lttng_destruction_handle_destroy(
struct lttng_destruction_handle *handle);
+/*
+ * Wait for the destruction of a session to complete.
+ *
+ * A negative timeout_ms value can be used to wait indefinitely.
+ *
+ * Returns LTTNG_DESTRUCTION_HANDLE_STATUS_COMPLETED if the session destruction
+ * operation was completed. LTTNG_DESTRUCTION_HANDLE_STATUS_TIMEOUT is returned
+ * to indicate that the wait timed out.
+ * On error, one of the negative lttng_destruction_handle_status is returned.
+ *
+ * Note: This function returning a success status does not mean that
+ * the destruction operation itself succeeded; it indicates that the _wait_
+ * operation completed successfully.
+ */
extern enum lttng_destruction_handle_status
lttng_destruction_handle_wait_for_completion(
struct lttng_destruction_handle *handle, int timeout_ms);
+/*
+ * Get the result of a session destruction operation.
+ *
+ * This function must be used on a session destruction handle which was
+ * successfully waited on.
+ *
+ * Returns LTTNG_DESTRUCTION_HANDLE_STATUS_OK if the result of the session
+ * destruction operation could be obtained. Check the value of 'result' to
+ * determine if the destruction of the session completed successfully or not.
+ *
+ * On error, one of the negative lttng_destruction_handle_status is returned.
+ * Returns LTTNG_DESTRUCTION_HANDLE_STATUS_INVALID if the session destruction
+ * was not waited-on using the handle or if the arguments of the function are
+ * invalid (e.g. NULL).
+ */
extern enum lttng_destruction_handle_status
lttng_destruction_handle_get_result(
const struct lttng_destruction_handle *handle,
enum lttng_error_code *result);
+/*
+ * Get the status of the session rotation performed as part of the session's
+ * destruction.
+ *
+ * A session will perform a final rotation if it was ever rotated over its
+ * lifetime. If this happens, this function returns the state of the rotation
+ * that was performed.
+ *
+ * This function must be used on a session destruction handle which was
+ * successfully waited on.
+ *
+ * Returns LTTNG_DESTRUCTION_HANDLE_STATUS_OK if the state of the session
+ * rotation could be obtained. Check the value of 'rotation_state' to
+ * determine if the rotation of the session completed successfully or not.
+ *
+ * On error, one of the negative lttng_destruction_handle_status is returned.
+ * Returns LTTNG_DESTRUCTION_HANDLE_STATUS_INVALID if the session destruction
+ * was not waited-on using the handle or if the arguments of the function are
+ * invalid (e.g. NULL).
+ *
+ * Note that if no rotation was performed, rotation_state will be set to
+ * LTTNG_ROTATION_STATE_NO_ROTATION.
+ */
extern enum lttng_destruction_handle_status
lttng_destruction_handle_get_rotation_state(
const struct lttng_destruction_handle *handle,
enum lttng_rotation_state *rotation_state);
+/*
+ * Get the location of the archive resulting from the rotation performed during
+ * the session's destruction.
+ *
+ * This function must be used on a session destruction handle which was
+ * successfully waited on and a session rotation must have been be completed
+ * successfully in order for this call to succeed.
+ *
+ * The location returned remains owned by the session destruction handle.
+ *
+ * Returns LTTNG_DESTRUCTION_HANDLE_STATUS_OK if the location of the archive
+ * resulting from the session rotation could be obtained.
+ *
+ * On error, one of the negative lttng_destruction_handle_status is returned.
+ * Returns LTTNG_DESTRUCTION_HANDLE_STATUS_INVALID if the session destruction
+ * was not waited-on using the handle, if no session rotation occurred as part
+ * of the session's destruction, or if the arguments of the function are
+ * invalid (e.g. NULL).
+ */
extern enum lttng_destruction_handle_status
lttng_destruction_handle_get_archive_location(
const struct lttng_destruction_handle *handle,
projects / lttng-tools.git / blobdiff