+++ /dev/null
-/*
- * Copyright (C) 2017 Julien Desfossez <jdesfossez@efficios.com>
- * Copyright (C) 2018 Jérémie Galarneau <jeremie.galarneau@efficios.com>
- *
- * SPDX-License-Identifier: GPL-2.0-only
- *
- */
-
-#define _LGPL_SOURCE
-#include "cmd.hpp"
-#include "health-sessiond.hpp"
-#include "lttng-sessiond.hpp"
-#include "notification-thread-commands.hpp"
-#include "rotate.hpp"
-#include "rotation-thread.hpp"
-#include "session.hpp"
-#include "utils.hpp"
-
-#include <common/align.hpp>
-#include <common/config/session-config.hpp>
-#include <common/credentials.hpp>
-#include <common/defaults.hpp>
-#include <common/error.hpp>
-#include <common/futex.hpp>
-#include <common/hashtable/utils.hpp>
-#include <common/kernel-ctl/kernel-ctl.hpp>
-#include <common/time.hpp>
-#include <common/utils.hpp>
-
-#include <lttng/action/action-internal.hpp>
-#include <lttng/condition/condition-internal.hpp>
-#include <lttng/notification/channel-internal.hpp>
-#include <lttng/rotate-internal.hpp>
-#include <lttng/trigger/trigger.h>
-
-#include <inttypes.h>
-#include <signal.h>
-#include <sys/stat.h>
-#include <time.h>
-#include <urcu.h>
-#include <urcu/list.h>
-#include <urcu/rculfhash.h>
-
-int subscribe_session_consumed_size_rotation(
- struct ltt_session *session,
- uint64_t size,
- struct notification_thread_handle *notification_thread_handle)
-{
- int ret;
- enum lttng_condition_status condition_status;
- enum lttng_notification_channel_status nc_status;
- const uint64_t eventfd_increment_value = 1;
- struct lttng_condition *rotate_condition = nullptr;
- struct lttng_action *notify_action = nullptr;
- const struct lttng_credentials session_creds = {
- .uid = LTTNG_OPTIONAL_INIT_VALUE(session->uid),
- .gid = LTTNG_OPTIONAL_INIT_VALUE(session->gid),
- };
-
- rotate_condition = lttng_condition_session_consumed_size_create();
- if (!rotate_condition) {
- ERR("Failed to create session consumed size condition object");
- ret = -1;
- goto end;
- }
-
- condition_status =
- lttng_condition_session_consumed_size_set_threshold(rotate_condition, size);
- if (condition_status != LTTNG_CONDITION_STATUS_OK) {
- ERR("Could not set session consumed size condition threshold (size = %" PRIu64 ")",
- size);
- ret = -1;
- goto end;
- }
-
- condition_status = lttng_condition_session_consumed_size_set_session_name(rotate_condition,
- session->name);
- if (condition_status != LTTNG_CONDITION_STATUS_OK) {
- ERR("Could not set session consumed size condition session name (name = %s)",
- session->name);
- ret = -1;
- goto end;
- }
-
- notify_action = lttng_action_notify_create();
- if (!notify_action) {
- ERR("Could not create notify action");
- ret = -1;
- goto end;
- }
-
- LTTNG_ASSERT(!session->rotate_trigger);
- session->rotate_trigger = lttng_trigger_create(rotate_condition, notify_action);
- if (!session->rotate_trigger) {
- ERR("Could not create size-based rotation trigger");
- ret = -1;
- goto end;
- }
-
- /* Ensure this trigger is not visible to external users. */
- lttng_trigger_set_hidden(session->rotate_trigger);
- lttng_trigger_set_credentials(session->rotate_trigger, &session_creds);
-
- nc_status =
- lttng_notification_channel_subscribe(rotate_notification_channel, rotate_condition);
- if (nc_status != LTTNG_NOTIFICATION_CHANNEL_STATUS_OK) {
- ERR("Could not subscribe to session consumed size notification");
- ret = -1;
- goto end;
- }
-
- ret = lttng_write(rotate_notification_channel_subscription_change_eventfd,
- &eventfd_increment_value,
- sizeof(eventfd_increment_value));
- if (ret != sizeof(eventfd_increment_value)) {
- PERROR("Failed to wake up rotation thread as writing to the rotation thread notification channel subscription change eventfd failed");
- ret = -1;
- goto end;
- }
-
- ret = notification_thread_command_register_trigger(
- notification_thread_handle, session->rotate_trigger, true);
- if (ret < 0 && ret != -LTTNG_ERR_TRIGGER_EXISTS) {
- ERR("Register trigger, %s", lttng_strerror(ret));
- ret = -1;
- goto end;
- }
-
- ret = 0;
-
-end:
- lttng_condition_put(rotate_condition);
- lttng_action_put(notify_action);
- if (ret) {
- lttng_trigger_put(session->rotate_trigger);
- }
- return ret;
-}
-
-int unsubscribe_session_consumed_size_rotation(
- struct ltt_session *session, struct notification_thread_handle *notification_thread_handle)
-{
- int ret = 0;
- enum lttng_notification_channel_status status;
- const uint64_t eventfd_increment_value = 1;
-
- LTTNG_ASSERT(session->rotate_trigger);
- status = lttng_notification_channel_unsubscribe(
- rotate_notification_channel,
- lttng_trigger_get_const_condition(session->rotate_trigger));
- if (status != LTTNG_NOTIFICATION_CHANNEL_STATUS_OK) {
- ERR("Session unsubscribe error: %d", (int) status);
- ret = -1;
- goto end;
- }
-
- ret = lttng_write(rotate_notification_channel_subscription_change_eventfd,
- &eventfd_increment_value,
- sizeof(eventfd_increment_value));
- if (ret != sizeof(eventfd_increment_value)) {
- PERROR("Failed to wake up rotation thread as writing to the rotation thread notification channel subscription change eventfd failed");
- ret = -1;
- goto end;
- }
-
- ret = notification_thread_command_unregister_trigger(notification_thread_handle,
- session->rotate_trigger);
- if (ret != LTTNG_OK) {
- ERR("Session unregister trigger error: %d", ret);
- goto end;
- }
-
- lttng_trigger_put(session->rotate_trigger);
- session->rotate_trigger = nullptr;
-
- ret = 0;
-end:
- return ret;
-}
projects / lttng-tools.git / blobdiff