2 * SPDX-License-Identifier: LGPL-2.1-only
4 * Copyright (C) 2005-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
6 * This contains the core definitions for the Linux Trace Toolkit.
9 #ifndef _LTTNG_TRACER_CORE_H
10 #define _LTTNG_TRACER_CORE_H
13 #include <urcu/arch.h>
14 #include <urcu/list.h>
15 #include <lttng/ust-tracer.h>
16 #include <lttng/ringbuffer-context.h>
17 #include <usterr-signal-safe.h>
20 * The longuest possible namespace proc path is with the cgroup ns
21 * and the maximum theoretical linux pid of 536870912 :
23 * /proc/self/task/536870912/ns/cgroup
25 #define LTTNG_PROC_NS_PATH_MAX 40
27 struct lttng_ust_session
;
28 struct lttng_ust_channel_buffer
;
29 struct lttng_ust_ctx_field
;
30 struct lttng_ust_lib_ring_buffer_ctx
;
31 struct lttng_ust_ctx_value
;
32 struct lttng_ust_event_recorder
;
33 struct lttng_ust_event_notifier
;
34 struct lttng_ust_notification_ctx
;
36 int ust_lock(void) __attribute__ ((warn_unused_result
))
37 __attribute__((visibility("hidden")));
39 void ust_lock_nocheck(void)
40 __attribute__((visibility("hidden")));
43 __attribute__((visibility("hidden")));
45 void lttng_ust_fixup_tls(void)
46 __attribute__((visibility("hidden")));
48 void lttng_fixup_event_tls(void)
49 __attribute__((visibility("hidden")));
51 void lttng_fixup_vtid_tls(void)
52 __attribute__((visibility("hidden")));
54 void lttng_fixup_procname_tls(void)
55 __attribute__((visibility("hidden")));
57 void lttng_fixup_cgroup_ns_tls(void)
58 __attribute__((visibility("hidden")));
60 void lttng_fixup_ipc_ns_tls(void)
61 __attribute__((visibility("hidden")));
63 void lttng_fixup_net_ns_tls(void)
64 __attribute__((visibility("hidden")));
66 void lttng_fixup_time_ns_tls(void)
67 __attribute__((visibility("hidden")));
69 void lttng_fixup_uts_ns_tls(void)
70 __attribute__((visibility("hidden")));
72 void lttng_ust_fixup_fd_tracker_tls(void)
73 __attribute__((visibility("hidden")));
75 const char *lttng_ust_obj_get_name(int id
)
76 __attribute__((visibility("hidden")));
78 int lttng_get_notify_socket(void *owner
)
79 __attribute__((visibility("hidden")));
81 char* lttng_ust_sockinfo_get_procname(void *owner
)
82 __attribute__((visibility("hidden")));
84 void lttng_ust_sockinfo_session_enabled(void *owner
)
85 __attribute__((visibility("hidden")));
87 ssize_t
lttng_ust_read(int fd
, void *buf
, size_t len
)
88 __attribute__((visibility("hidden")));
90 size_t lttng_ust_dummy_get_size(struct lttng_ust_ctx_field
*field
, size_t offset
)
91 __attribute__((visibility("hidden")));
93 void lttng_ust_dummy_record(struct lttng_ust_ctx_field
*field
,
94 struct lttng_ust_lib_ring_buffer_ctx
*ctx
,
95 struct lttng_ust_channel_buffer
*chan
)
96 __attribute__((visibility("hidden")));
98 void lttng_ust_dummy_get_value(struct lttng_ust_ctx_field
*field
,
99 struct lttng_ust_ctx_value
*value
)
100 __attribute__((visibility("hidden")));
102 void lttng_event_notifier_notification_send(
103 struct lttng_ust_event_notifier
*event_notifier
,
104 const char *stack_data
,
105 struct lttng_ust_notification_ctx
*notif_ctx
)
106 __attribute__((visibility("hidden")));
108 struct lttng_counter_transport
*lttng_counter_transport_find(const char *name
)
109 __attribute__((visibility("hidden")));
111 void lttng_counter_transport_register(struct lttng_counter_transport
*transport
)
112 __attribute__((visibility("hidden")));
114 void lttng_counter_transport_unregister(struct lttng_counter_transport
*transport
)
115 __attribute__((visibility("hidden")));
117 #ifdef HAVE_LINUX_PERF_EVENT_H
118 void lttng_ust_fixup_perf_counter_tls(void)
119 __attribute__((visibility("hidden")));
121 void lttng_perf_lock(void)
122 __attribute__((visibility("hidden")));
124 void lttng_perf_unlock(void)
125 __attribute__((visibility("hidden")));
126 #else /* #ifdef HAVE_LINUX_PERF_EVENT_H */
128 void lttng_ust_fixup_perf_counter_tls(void)
132 void lttng_perf_lock(void)
136 void lttng_perf_unlock(void)
139 #endif /* #else #ifdef HAVE_LINUX_PERF_EVENT_H */
141 #endif /* _LTTNG_TRACER_CORE_H */