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
;
35 __attribute__((visibility("hidden")))
36 int ust_lock(void) __attribute__ ((warn_unused_result
));
38 __attribute__((visibility("hidden")))
39 void ust_lock_nocheck(void);
41 __attribute__((visibility("hidden")))
42 void ust_unlock(void);
44 __attribute__((visibility("hidden")))
45 void lttng_ust_fixup_tls(void);
47 __attribute__((visibility("hidden")))
48 void lttng_fixup_event_tls(void);
50 __attribute__((visibility("hidden")))
51 void lttng_fixup_vtid_tls(void);
53 __attribute__((visibility("hidden")))
54 void lttng_fixup_procname_tls(void);
56 __attribute__((visibility("hidden")))
57 void lttng_fixup_cgroup_ns_tls(void);
59 __attribute__((visibility("hidden")))
60 void lttng_fixup_ipc_ns_tls(void);
62 __attribute__((visibility("hidden")))
63 void lttng_fixup_net_ns_tls(void);
65 __attribute__((visibility("hidden")))
66 void lttng_fixup_time_ns_tls(void);
68 __attribute__((visibility("hidden")))
69 void lttng_fixup_uts_ns_tls(void);
71 __attribute__((visibility("hidden")))
72 void lttng_ust_fixup_fd_tracker_tls(void);
74 __attribute__((visibility("hidden")))
75 const char *lttng_ust_obj_get_name(int id
);
77 __attribute__((visibility("hidden")))
78 int lttng_get_notify_socket(void *owner
);
80 __attribute__((visibility("hidden")))
81 char* lttng_ust_sockinfo_get_procname(void *owner
);
83 __attribute__((visibility("hidden")))
84 void lttng_ust_sockinfo_session_enabled(void *owner
);
86 __attribute__((visibility("hidden")))
87 ssize_t
lttng_ust_read(int fd
, void *buf
, size_t len
);
89 __attribute__((visibility("hidden")))
90 size_t lttng_ust_dummy_get_size(struct lttng_ust_ctx_field
*field
, size_t offset
);
92 __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")))
97 void lttng_ust_dummy_get_value(struct lttng_ust_ctx_field
*field
,
98 struct lttng_ust_ctx_value
*value
);
100 __attribute__((visibility("hidden")))
101 void lttng_event_notifier_notification_send(
102 struct lttng_ust_event_notifier
*event_notifier
,
103 const char *stack_data
);
105 __attribute__((visibility("hidden")))
106 struct lttng_counter_transport
*lttng_counter_transport_find(const char *name
);
108 __attribute__((visibility("hidden")))
109 void lttng_counter_transport_register(struct lttng_counter_transport
*transport
);
111 __attribute__((visibility("hidden")))
112 void lttng_counter_transport_unregister(struct lttng_counter_transport
*transport
);
114 #ifdef HAVE_PERF_EVENT
115 __attribute__((visibility("hidden")))
116 void lttng_ust_fixup_perf_counter_tls(void);
118 __attribute__((visibility("hidden")))
119 void lttng_perf_lock(void);
121 __attribute__((visibility("hidden")))
122 void lttng_perf_unlock(void);
123 #else /* #ifdef HAVE_PERF_EVENT */
125 void lttng_ust_fixup_perf_counter_tls(void)
129 void lttng_perf_lock(void)
133 void lttng_perf_unlock(void)
136 #endif /* #else #ifdef HAVE_PERF_EVENT */
138 #endif /* _LTTNG_TRACER_CORE_H */