/*
* Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
+ * Copyright (C) 2013 - Raphaƫl Beamonte <raphael.beamonte@gmail.com>
*
* 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,
#ifndef _LTT_SESSIOND_H
#define _LTT_SESSIOND_H
-#define _LGPL_SOURCE
#include <urcu.h>
-#include <urcu/wfqueue.h>
+#include <urcu/wfcqueue.h>
#include <common/sessiond-comm/sessiond-comm.h>
#include <common/compat/poll.h>
#include "session.h"
#include "ust-app.h"
+#include "notification-thread.h"
+#include "sessiond-config.h"
extern const char default_home_dir[],
default_tracing_group[],
/* Set in main.c at boot time of the daemon */
extern int kernel_tracer_fd;
+/* Notification thread handle. */
+extern struct notification_thread_handle *notification_thread_handle;
+
/*
* This contains extra data needed for processing a command received by the
* session daemon from the lttng client.
struct ust_command {
int sock;
struct ust_register_msg reg_msg;
- struct cds_wfq_node node;
+ struct cds_wfcq_node node;
};
/*
- * Queue used to enqueue UST registration request (ust_commant) and protected
+ * 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_wfq_queue queue;
+ 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 apps_cmd_notify_pipe[2];
-int sessiond_set_thread_pollset(struct lttng_poll_event *events, size_t size);
+/*
+ * Used to notify that a hash table needs to be destroyed by dedicated
+ * thread. Required by design because we don't want to move destroy
+ * paths outside of large RCU read-side lock paths, and destroy cannot
+ * be called by call_rcu thread, because it may hang (waiting for
+ * call_rcu completion).
+ */
+extern int ht_cleanup_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 page_size;
+
+/* Application health monitoring */
+extern struct health_app *health_sessiond;
+
+extern struct sessiond_config config;
+
+extern int lttng_sessiond_ready;
+
+extern int ust_consumerd64_fd, ust_consumerd32_fd;
+
+/* Parent PID for --sig-parent option */
+extern pid_t ppid;
+/* Internal parent PID use with daemonize. */
+extern pid_t child_ppid;
+
+int sessiond_init_thread_quit_pipe(void);
int sessiond_check_thread_quit_pipe(int fd, uint32_t events);
+int sessiond_wait_for_quit_pipe(unsigned int timeout_us);
+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_notify_ready(void);
+void sessiond_signal_parents(void);
#endif /* _LTT_SESSIOND_H */