X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Fmi-lttng.h;h=7fbf7b53ee82e0e6a57c08cc7ff11b8f78210e96;hp=deab4e41ca786326f6437cc1761c3d6fbff3b29d;hb=523c4f8cdeb927b789710e3dafcb3f249751ccfd;hpb=4965f956f3ef47388fb4a1b2f8f504abfe31afe7 diff --git a/src/common/mi-lttng.h b/src/common/mi-lttng.h index deab4e41c..7fbf7b53e 100644 --- a/src/common/mi-lttng.h +++ b/src/common/mi-lttng.h @@ -1,19 +1,10 @@ /* - * Copyright (C) 2014 - Jonathan Rajotte - * - Olivier Cotte + * Copyright (C) 2014 Jonathan Rajotte + * Copyright (C) 2014 Olivier Cotte + * Copyright (C) 2016 Jérémie Galarneau * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License, version 2 only, as - * published by the Free Software Foundation. + * SPDX-License-Identifier: GPL-2.0-only * - * This program 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 General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., 51 - * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #ifndef _MI_LTTNG_H @@ -23,7 +14,7 @@ #include #include -#include +#include #include /* Don't want to reference snapshot-internal.h here */ @@ -39,20 +30,38 @@ struct mi_writer { * Version information for the machine interface. */ struct mi_lttng_version { - char version[NAME_MAX]; /* Version number of package */ + char version[LTTNG_NAME_MAX]; /* Version number of package */ uint32_t version_major; /* LTTng-Tools major version number */ uint32_t version_minor; /* LTTng-Tools minor version number */ uint32_t version_patchlevel; /* LTTng-Tools patchlevel version number */ - char version_commit[NAME_MAX]; /* Commit hash of the current version */ - char version_name[NAME_MAX]; - char package_url[NAME_MAX]; /* Define to the home page for this package. */ + char version_commit[LTTNG_NAME_MAX]; /* Commit hash of the current version */ + char version_name[LTTNG_NAME_MAX]; + char package_url[LTTNG_NAME_MAX]; /* Define to the home page for this package. */ +}; + +/* Error query callbacks. */ +typedef enum lttng_error_code (*mi_lttng_error_query_trigger_cb)( + const struct lttng_trigger *trigger, + struct lttng_error_query_results **results); +typedef enum lttng_error_code (*mi_lttng_error_query_condition_cb)( + const struct lttng_trigger *trigger, + struct lttng_error_query_results **results); +typedef enum lttng_error_code (*mi_lttng_error_query_action_cb)( + const struct lttng_trigger *trigger, + const struct lttng_action_path *action_path, + struct lttng_error_query_results **results); + +struct mi_lttng_error_query_callbacks { + mi_lttng_error_query_trigger_cb trigger_cb; + mi_lttng_error_query_condition_cb condition_cb; + mi_lttng_error_query_action_cb action_cb; }; /* Strings related to command */ extern const char * const mi_lttng_element_command; extern const char * const mi_lttng_element_command_action; extern const char * const mi_lttng_element_command_add_context; -extern const char * const mi_lttng_element_command_calibrate; +extern const char *const mi_lttng_element_command_add_trigger; extern const char * const mi_lttng_element_command_create; extern const char * const mi_lttng_element_command_destroy; extern const char * const mi_lttng_element_command_disable_channel; @@ -60,9 +69,15 @@ extern const char * const mi_lttng_element_command_disable_event; extern const char * const mi_lttng_element_command_enable_channels; extern const char * const mi_lttng_element_command_enable_event; extern const char * const mi_lttng_element_command_list; +extern const char *const mi_lttng_element_command_list_trigger; extern const char * const mi_lttng_element_command_load; +extern const char * const mi_lttng_element_command_metadata; +extern const char * const mi_lttng_element_command_metadata_action; +extern const char * const mi_lttng_element_command_regenerate; +extern const char * const mi_lttng_element_command_regenerate_action; extern const char * const mi_lttng_element_command_name; extern const char * const mi_lttng_element_command_output; +extern const char *const mi_lttng_element_command_remove_trigger; extern const char * const mi_lttng_element_command_save; extern const char * const mi_lttng_element_command_set_session; extern const char * const mi_lttng_element_command_snapshot; @@ -76,6 +91,10 @@ extern const char * const mi_lttng_element_command_success; extern const char * const mi_lttng_element_command_track; extern const char * const mi_lttng_element_command_untrack; extern const char * const mi_lttng_element_command_version; +extern const char * const mi_lttng_element_command_rotate; +extern const char * const mi_lttng_element_command_enable_rotation; +extern const char * const mi_lttng_element_command_disable_rotation; +extern const char * const mi_lttng_element_command_clear; /* Strings related to version command */ extern const char * const mi_lttng_element_version; @@ -92,17 +111,10 @@ extern const char * const mi_lttng_element_version_web; extern const char * const mi_lttng_element_event_field; extern const char * const mi_lttng_element_event_fields; -/* String related to lttng_event_context */ -extern const char * const mi_lttng_context_type_perf_counter; -extern const char * const mi_lttng_context_type_perf_cpu_counter; -extern const char * const mi_lttng_context_type_perf_thread_counter; - /* String related to lttng_event_perf_counter_ctx */ extern const char * const mi_lttng_element_perf_counter_context; /* Strings related to pid */ -extern const char * const mi_lttng_element_pids; -extern const char * const mi_lttng_element_pid; extern const char * const mi_lttng_element_pid_id; /* Strings related to save command */ @@ -110,6 +122,8 @@ extern const char * const mi_lttng_element_save; /* Strings related to load command */ extern const char * const mi_lttng_element_load; +LTTNG_HIDDEN extern const char * const mi_lttng_element_load_overrides; +LTTNG_HIDDEN extern const char * const mi_lttng_element_load_override_url; /* General element of mi_lttng */ extern const char * const mi_lttng_element_empty; @@ -175,10 +189,6 @@ extern const char * const mi_lttng_loglevel_type_range; extern const char * const mi_lttng_loglevel_type_single; extern const char * const mi_lttng_loglevel_type_unknown; -/* Sting related to lttng_calibrate */ -extern const char * const mi_lttng_element_calibrate; -extern const char * const mi_lttng_element_calibrate_function; - /* String related to a lttng_snapshot */ extern const char * const mi_lttng_element_snapshot_ctrl_url; extern const char * const mi_lttng_element_snapshot_data_url; @@ -187,13 +197,218 @@ extern const char * const mi_lttng_element_snapshot_n_ptr; extern const char * const mi_lttng_element_snapshot_session_name; extern const char * const mi_lttng_element_snapshots; +/* String related to track/untrack command */ +extern const char * const mi_lttng_element_track_untrack_all_wildcard; + +LTTNG_HIDDEN extern const char * const mi_lttng_element_session_name; + +/* String related to rotate command */ +LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation; +LTTNG_HIDDEN extern const char * const mi_lttng_element_rotate_status; +LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_schedule; +LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_schedules; +LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_schedule_periodic; +LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_schedule_periodic_time_us; +LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_schedule_size_threshold; +LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_schedule_size_threshold_bytes; +LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_schedule_result; +LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_schedule_results; +LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_state; +LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_location; +LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_location_local; +LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_location_local_absolute_path; +LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_location_relay; +LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_location_relay_host; +LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_location_relay_control_port; +LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_location_relay_data_port; +LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_location_relay_protocol; +LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_location_relay_relative_path; + +/* String related to enum lttng_rotation_state */ +LTTNG_HIDDEN extern const char * const mi_lttng_rotation_state_str_ongoing; +LTTNG_HIDDEN extern const char * const mi_lttng_rotation_state_str_completed; +LTTNG_HIDDEN extern const char * const mi_lttng_rotation_state_str_expired; +LTTNG_HIDDEN extern const char * const mi_lttng_rotation_state_str_error; + +/* String related to enum lttng_trace_archive_location_relay_protocol_type */ +LTTNG_HIDDEN extern const char * const mi_lttng_rotation_location_relay_protocol_str_tcp; + +/* String related to rate_policy elements */ +LTTNG_HIDDEN extern const char *const mi_lttng_element_rate_policy; +LTTNG_HIDDEN extern const char *const mi_lttng_element_rate_policy_every_n; +LTTNG_HIDDEN extern const char *const mi_lttng_element_rate_policy_once_after_n; + +LTTNG_HIDDEN extern const char + *const mi_lttng_element_rate_policy_every_n_interval; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_rate_policy_once_after_n_threshold; + +/* String related to action elements */ +LTTNG_HIDDEN extern const char *const mi_lttng_element_action; +LTTNG_HIDDEN extern const char *const mi_lttng_element_action_list; +LTTNG_HIDDEN extern const char *const mi_lttng_element_action_notify; +LTTNG_HIDDEN extern const char *const mi_lttng_element_action_start_session; +LTTNG_HIDDEN extern const char *const mi_lttng_element_action_stop_session; +LTTNG_HIDDEN extern const char *const mi_lttng_element_action_rotate_session; +LTTNG_HIDDEN extern const char *const mi_lttng_element_action_snapshot_session; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_action_snapshot_session_output; + +/* String related to condition */ +LTTNG_HIDDEN extern const char *const mi_lttng_element_condition; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_condition_buffer_usage_high; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_condition_buffer_usage_low; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_condition_event_rule_matches; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_condition_session_consumed_size; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_condition_session_rotation; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_condition_session_rotation_completed; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_condition_session_rotation_ongoing; +LTTNG_HIDDEN extern const char *const mi_lttng_element_condition_channel_name; +LTTNG_HIDDEN extern const char *const mi_lttng_element_condition_threshold_ratio; +LTTNG_HIDDEN extern const char *const mi_lttng_element_condition_threshold_bytes; + +/* String related to capture descriptor */ +LTTNG_HIDDEN extern const char *const mi_lttng_element_capture_descriptor; +LTTNG_HIDDEN extern const char *const mi_lttng_element_capture_descriptors; + +/* String related to event expression */ +LTTNG_HIDDEN extern const char *const mi_lttng_element_event_expr; +LTTNG_HIDDEN extern const char *const mi_lttng_element_event_expr_payload_field; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_event_expr_channel_context_field; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_event_expr_app_specific_context_field; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_event_expr_array_field_element; + +LTTNG_HIDDEN extern const char *const mi_lttng_element_event_expr_provider_name; +LTTNG_HIDDEN extern const char *const mi_lttng_element_event_expr_type_name; +LTTNG_HIDDEN extern const char *const mi_lttng_element_event_expr_index; + +/* String related to event rule */ +LTTNG_HIDDEN extern const char *const mi_lttng_element_event_rule; + +/* String related to lttng_event_rule */ +LTTNG_HIDDEN extern const char *const mi_lttng_element_event_rule_event_name; +LTTNG_HIDDEN extern const char *const mi_lttng_element_event_rule_name_pattern; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_event_rule_filter_expression; +LTTNG_HIDDEN extern const char *const mi_lttng_element_event_rule_jul_logging; +LTTNG_HIDDEN extern const char *const mi_lttng_element_event_rule_kernel_kprobe; +LTTNG_HIDDEN extern const char *const mi_lttng_element_event_rule_kernel_syscall; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_event_rule_kernel_tracepoint; +LTTNG_HIDDEN extern const char *const mi_lttng_element_event_rule_kernel_uprobe; +LTTNG_HIDDEN extern const char *const mi_lttng_element_event_rule_log4j_logging; +LTTNG_HIDDEN extern const char *const mi_lttng_element_event_rule_python_logging; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_event_rule_user_tracepoint; + +/* String related to lttng_event_rule_kernel_syscall. */ +LTTNG_HIDDEN extern const char + *const mi_lttng_element_event_rule_kernel_syscall_emission_site; + +/* String related to enum lttng_event_rule_kernel_syscall_emission_site. */ +LTTNG_HIDDEN extern const char *const + mi_lttng_event_rule_kernel_syscall_emission_site_entry_exit; +LTTNG_HIDDEN extern const char + *const mi_lttng_event_rule_kernel_syscall_emission_site_entry; +LTTNG_HIDDEN extern const char + *const mi_lttng_event_rule_kernel_syscall_emission_site_exit; + +LTTNG_HIDDEN extern const char *const + mi_lttng_element_event_rule_user_tracepoint_name_pattern_exclusions; +LTTNG_HIDDEN extern const char *const + mi_lttng_element_event_rule_user_tracepoint_name_pattern_exclusion; + +/* String related to log level rule. */ +LTTNG_HIDDEN extern const char *const mi_lttng_element_log_level_rule; +LTTNG_HIDDEN extern const char *const mi_lttng_element_log_level_rule_exactly; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_log_level_rule_at_least_as_severe_as; +LTTNG_HIDDEN extern const char *const + mi_lttng_element_log_level_rule_at_least_as_severe_as_thre; +LTTNG_HIDDEN extern const char *const mi_lttng_element_log_level_rule_level; + +/* String related to kernel probe location. */ +LTTNG_HIDDEN extern const char *const mi_lttng_element_kernel_probe_location; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_kernel_probe_location_symbol_offset; +LTTNG_HIDDEN extern const char *const + mi_lttng_element_kernel_probe_location_symbol_offset_name; +LTTNG_HIDDEN extern const char *const + mi_lttng_element_kernel_probe_location_symbol_offset_offset; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_kernel_probe_location_address; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_kernel_probe_location_address_address; + +/* String related to userspace probe location. */ +LTTNG_HIDDEN extern const char *const mi_lttng_element_userspace_probe_location; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_userspace_probe_location_binary_path; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_userspace_probe_location_function; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_userspace_probe_location_function_name; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_userspace_probe_location_lookup_method; +LTTNG_HIDDEN extern const char *const + mi_lttng_element_userspace_probe_location_lookup_method_function_default; +LTTNG_HIDDEN extern const char *const + mi_lttng_element_userspace_probe_location_lookup_method_function_elf; +LTTNG_HIDDEN extern const char *const + mi_lttng_element_userspace_probe_location_lookup_method_tracepoint_sdt; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_userspace_probe_location_tracepoint; +LTTNG_HIDDEN extern const char *const + mi_lttng_element_userspace_probe_location_tracepoint_probe_name; +LTTNG_HIDDEN extern const char *const + mi_lttng_element_userspace_probe_location_tracepoint_provider_name; + +/* String related to enum + * lttng_userspace_probe_location_function_instrumentation_type */ +LTTNG_HIDDEN extern const char *const + mi_lttng_element_userspace_probe_location_function_instrumentation_type; +LTTNG_HIDDEN extern const char *const + mi_lttng_userspace_probe_location_function_instrumentation_type_entry; + +/* String related to trigger */ +LTTNG_HIDDEN extern const char *const mi_lttng_element_triggers; +LTTNG_HIDDEN extern const char *const mi_lttng_element_trigger; +LTTNG_HIDDEN extern const char *const mi_lttng_element_trigger_owner_uid; + +/* String related to error_query. */ +LTTNG_HIDDEN extern const char *const mi_lttng_element_error_query_result; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_error_query_result_counter; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_error_query_result_counter_value; +LTTNG_HIDDEN extern const char + *const mi_lttng_element_error_query_result_description; +LTTNG_HIDDEN extern const char *const mi_lttng_element_error_query_result_name; +LTTNG_HIDDEN extern const char *const mi_lttng_element_error_query_result_type; +LTTNG_HIDDEN extern const char *const mi_lttng_element_error_query_results; + +/* String related to add-context command */ +LTTNG_HIDDEN extern const char * const mi_lttng_element_context_symbol; + /* Utility string function */ const char *mi_lttng_loglevel_string(int value, enum lttng_domain_type domain); const char *mi_lttng_logleveltype_string(enum lttng_loglevel_type value); const char *mi_lttng_eventfieldtype_string(enum lttng_event_field_type value); const char *mi_lttng_domaintype_string(enum lttng_domain_type value); const char *mi_lttng_buffertype_string(enum lttng_buffer_type value); -const char *mi_lttng_calibratetype_string(enum lttng_calibrate_type val); +const char *mi_lttng_rotation_state_string(enum lttng_rotation_state value); +const char *mi_lttng_trace_archive_location_relay_protocol_type_string( + enum lttng_trace_archive_location_relay_protocol_type value); /* * Create an instance of a machine interface writer. @@ -323,6 +538,20 @@ int mi_lttng_writer_write_element_bool(struct mi_writer *writer, int mi_lttng_writer_write_element_string(struct mi_writer *writer, const char *element_name, const char *value); +/* + * Write an element of type double. + * + * writer An instance of a machine interface writer. + * element_name Element name. + * value Double value of the element. + * + * Returns zero if the element's value could be written. + * Negative values indicate an error. + */ +int mi_lttng_writer_write_element_double(struct mi_writer *writer, + const char *element_name, + double value); + /* * Machine interface of struct version. * @@ -555,6 +784,29 @@ int mi_lttng_event_field(struct mi_writer *writer, */ int mi_lttng_event_fields_open(struct mi_writer *writer); +/* + * Machine interface: open a trackers element. + * + * writer An instance of a machine interface writer. + * + * Returns zero if the element's value could be written. + * Negative values indicate an error. + */ +int mi_lttng_trackers_open(struct mi_writer *writer); + +/* + * Machine interface: open a process attribute tracker element. + * + * writer An instance of a machine interface writer. + * + * Returns zero if the element's value could be written. + * Negative values indicate an error. + * + * Note: A targets element is also opened for each tracker definition + */ +int mi_lttng_process_attribute_tracker_open( + struct mi_writer *writer, enum lttng_process_attr process_attr); + /* * Machine interface: open a PIDs element. * @@ -566,7 +818,36 @@ int mi_lttng_event_fields_open(struct mi_writer *writer); int mi_lttng_pids_open(struct mi_writer *writer); /* - * Machine interface of a PID. + * Machine interface: open a processes element. + * + * writer An instance of a machine interface writer. + * + * Returns zero if the element's value could be written. + * Negative values indicate an error. + */ +int mi_lttng_processes_open(struct mi_writer *writer); + +/* + * Machine interface of a Process. + * + * writer An instance of a machine interface writer. + * pid A PID. + * + * is_open Defines whether or not the session element shall be closed. + * This should be used carefully and the client + * must close the pid element. + * Use case: nested addition information on a domain + * ex: channel event. + * + * Returns zero if the element's value could be written. + * Negative values indicate an error. + */ +int mi_lttng_process(struct mi_writer *writer, pid_t pid , const char *name, + int is_open); + +/* + * TODO: move pid of lttng list -u to process semantic on mi api bump + * Machine interface of a Process. * * writer An instance of a machine interface writer. * pid A PID. @@ -580,21 +861,56 @@ int mi_lttng_pids_open(struct mi_writer *writer); * Returns zero if the element's value could be written. * Negative values indicate an error. */ -int mi_lttng_pid(struct mi_writer *writer, pid_t pid , const char *cmdline, +int mi_lttng_pid(struct mi_writer *writer, pid_t pid , const char *name, int is_open); /* - * Machine interface for struct lttng_calibrate. + * Machine interface: open a process attribute values element. + * + * writer An instance of a machine interface writer. + * + * Returns zero if the element's value could be written. + * Negative values indicate an error. + */ +int mi_lttng_process_attr_values_open(struct mi_writer *writer); + +/* + * Machine interface for track/untrack of all process attribute values. * * writer An instance of a machine interface writer. * - * calibrate A lttng_calibrate instance. + * Returns zero if the element's value could be written. + * Negative values indicate an error. + */ +int mi_lttng_all_process_attribute_value(struct mi_writer *writer, + enum lttng_process_attr process_attr, + bool is_open); + +/* + * Machine interface for track/untrack of an integral process attribute value. + * + * writer An instance of a machine interface writer. * * Returns zero if the element's value could be written. * Negative values indicate an error. */ -int mi_lttng_calibrate(struct mi_writer *writer, - struct lttng_calibrate *calibrate); +int mi_lttng_integral_process_attribute_value(struct mi_writer *writer, + enum lttng_process_attr process_attr, + int64_t value, + bool is_open); + +/* + * Machine interface for track/untrack of a string process attribute value. + * + * writer An instance of a machine interface writer. + * + * Returns zero if the element's value could be written. + * Negative values indicate an error. + */ +int mi_lttng_string_process_attribute_value(struct mi_writer *writer, + enum lttng_process_attr process_attr, + const char *value, + bool is_open); /* * Machine interface of a context. @@ -661,7 +977,7 @@ int mi_lttng_snapshot_output_session_name(struct mi_writer *writer, * Negative values indicate an error. */ int mi_lttng_snapshot_list_output(struct mi_writer *writer, - struct lttng_snapshot_output *output); + const struct lttng_snapshot_output *output); /* * Machine interface of the output of the command snapshot del output @@ -738,4 +1054,67 @@ int mi_lttng_snapshot_record(struct mi_writer *writer, const char *current_session_name, const char *url, const char *cmdline_ctrl_url, const char *cmdline_data_url); +/* + * Machine interface representation of a session rotation schedule. + * + * The machine interface serializes the provided schedule as one of the choices + * from 'rotation_schedule_type'. + * + * writer: An instance of a machine interface writer. + * + * schedule: An lttng rotation schedule descriptor object. + * + * Returns zero if the element's value could be written. + * Negative values indicate an error. + */ +int mi_lttng_rotation_schedule(struct mi_writer *writer, + const struct lttng_rotation_schedule *schedule); + +/* + * Machine interface of a session rotation schedule result. + * This is an element that is part of the output of the enable-rotation and + * disable-rotation commands. + * + * The machine interface provides the following information: + * - schedule: the session rotation schedule descriptor. + * - success: whether the sub-command succeeded. + * + * writer: An instance of a machine interface writer. + * + * schedule: An lttng rotation schedule descriptor object. + * + * success: Whether the sub-command suceeded. + * + * Returns zero if the element's value could be written. + * Negative values indicate an error. + */ +int mi_lttng_rotation_schedule_result(struct mi_writer *writer, + const struct lttng_rotation_schedule *schedule, + bool success); + +/* + * Machine interface of a session rotation result. + * This is an element that is part of the output of the rotate command. + * + * The machine interface provides the following information: + * - session_name: the session to be rotated. + * - state: the session rotation state. + * - location: the location of the completed chunk archive. + * + * writer: An instance of a machine interface writer. + * + * session_name: The session to which the rotate command applies. + * + * location: A location descriptor object. + * + * success: Whether the sub-command suceeded. + * + * Returns zero if the element's value could be written. + * Negative values indicate an error. + */ +int mi_lttng_rotate(struct mi_writer *writer, + const char *session_name, + enum lttng_rotation_state rotation_state, + const struct lttng_trace_archive_location *location); + #endif /* _MI_LTTNG_H */