X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Flttng-sessiond.h;fp=src%2Fbin%2Flttng-sessiond%2Flttng-sessiond.h;h=0000000000000000000000000000000000000000;hp=5dad32fc944ef3273664a42be895d907447a24d3;hb=c9e313bc594f40a86eed237dce222c0fc99c957f;hpb=4878de5c7deb512bbdac4fdfc498907efa06fb7c diff --git a/src/bin/lttng-sessiond/lttng-sessiond.h b/src/bin/lttng-sessiond/lttng-sessiond.h deleted file mode 100644 index 5dad32fc9..000000000 --- a/src/bin/lttng-sessiond/lttng-sessiond.h +++ /dev/null @@ -1,157 +0,0 @@ -/* - * Copyright (C) 2011 EfficiOS Inc. - * Copyright (C) 2013 Raphaël Beamonte - * - * SPDX-License-Identifier: GPL-2.0-only - * - */ - -#ifndef _LTT_SESSIOND_H -#define _LTT_SESSIOND_H - -#include -#include - -#include -#include -#include -#include -#include - -#include "session.h" -#include "ust-app.h" -#include "notification-thread.h" -#include "sessiond-config.h" - -/* - * Consumer daemon state which is changed when spawning it, killing it or in - * case of a fatal error. - */ -enum consumerd_state { - CONSUMER_STARTED = 1, - CONSUMER_STOPPED = 2, - CONSUMER_ERROR = 3, -}; - -/* Unique identifier of a session daemon instance. */ -extern lttng_uuid the_sessiond_uuid; - -/* - * This consumer daemon state is used to validate if a client command will be - * able to reach the consumer. If not, the client is informed. For instance, - * doing a "lttng start" when the consumer state is set to ERROR will return an - * error to the client. - * - * The following example shows a possible race condition of this scheme: - * - * consumer thread error happens - * client cmd arrives - * client cmd checks state -> still OK - * consumer thread exit, sets error - * client cmd try to talk to consumer - * ... - * - * However, since the consumer is a different daemon, we have no way of making - * sure the command will reach it safely even with this state flag. This is why - * we consider that up to the state validation during command processing, the - * command is safe. After that, we can not guarantee the correctness of the - * client request vis-a-vis the consumer. - */ -extern enum consumerd_state the_ust_consumerd_state; -extern enum consumerd_state the_kernel_consumerd_state; - -/* Set in main.c at boot time of the daemon */ -extern struct lttng_kernel_abi_tracer_version the_kernel_tracer_version; -extern struct lttng_kernel_abi_tracer_abi_version the_kernel_tracer_abi_version; - -/* Notification thread handle. */ -extern struct notification_thread_handle *the_notification_thread_handle; - -/* - * This contains extra data needed for processing a command received by the - * session daemon from the lttng client. - */ -struct command_ctx { - unsigned int lttng_msg_size; - struct ltt_session *session; - /* Input message */ - struct lttcomm_session_msg lsm; - /* Reply content, starts with an lttcomm_lttng_msg header. */ - struct lttng_payload reply_payload; - lttng_sock_cred creds; -}; - -struct ust_command { - int sock; - struct ust_register_msg reg_msg; - struct cds_wfcq_node node; -}; - -/* - * Queue used to enqueue UST registration request (ust_command) and synchronized - * by a futex with a scheme N wakers / 1 waiters. See futex.c/.h - */ -struct ust_cmd_queue { - int32_t futex; - struct cds_wfcq_head head; - struct cds_wfcq_tail tail; -}; - -/* - * This is the wait queue containing wait nodes during the application - * registration process. - */ -struct ust_reg_wait_queue { - unsigned long count; - struct cds_list_head head; -}; - -/* - * Use by the dispatch registration to queue UST command socket to wait for the - * notify socket. - */ -struct ust_reg_wait_node { - struct ust_app *app; - struct cds_list_head head; -}; - -extern int the_kernel_poll_pipe[2]; - -/* - * Populated when the daemon starts with the current page size of the system. - * Set in main() with the current page size. - */ -extern long the_page_size; - -/* Application health monitoring */ -extern struct health_app *the_health_sessiond; - -extern struct sessiond_config the_config; - -extern int the_ust_consumerd64_fd, the_ust_consumerd32_fd; - -/* Parent PID for --sig-parent option */ -extern pid_t the_ppid; -/* Internal parent PID use with daemonize. */ -extern pid_t the_child_ppid; - -/* Consumer daemon specific control data. */ -extern struct consumer_data the_ustconsumer32_data; -extern struct consumer_data the_ustconsumer64_data; -extern struct consumer_data the_kconsumer_data; - -int sessiond_init_thread_quit_pipe(void); -int sessiond_check_thread_quit_pipe(int fd, uint32_t events); -int sessiond_wait_for_quit_pipe(int timeout_ms); -int sessiond_notify_quit_pipe(void); -void sessiond_close_quit_pipe(void); - -int sessiond_set_thread_pollset(struct lttng_poll_event *events, size_t size); -void sessiond_signal_parents(void); - -void sessiond_set_client_thread_state(bool running); -void sessiond_wait_client_thread_stopped(void); - -void *thread_manage_consumer(void *data); - -#endif /* _LTT_SESSIOND_H */