1 #ifndef _LTTNG_TRACER_CORE_H
2 #define _LTTNG_TRACER_CORE_H
5 * Copyright (C) 2005-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
7 * This contains the core definitions for the Linux Trace Toolkit.
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; version 2.1 of
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 #include <urcu/arch.h>
26 #include <urcu/list.h>
27 #include <lttng/ust-tracer.h>
28 #include <lttng/bug.h>
29 #include <lttng/ringbuffer-config.h>
30 #include <usterr-signal-safe.h>
34 * The longuest possible namespace proc path is with the cgroup ns
35 * and the maximum theoretical linux pid of 536870912 :
37 * /proc/self/task/536870912/ns/cgroup
39 #define LTTNG_PROC_NS_PATH_MAX 40
44 struct lttng_ctx_field
;
45 struct lttng_ust_lib_ring_buffer_ctx
;
46 struct lttng_ctx_value
;
47 struct lttng_event_notifier
;
49 int ust_lock(void) __attribute__ ((warn_unused_result
));
50 void ust_lock_nocheck(void);
51 void ust_unlock(void);
53 void lttng_fixup_event_tls(void);
54 void lttng_fixup_vtid_tls(void);
55 void lttng_fixup_procname_tls(void);
56 void lttng_fixup_cgroup_ns_tls(void);
57 void lttng_fixup_ipc_ns_tls(void);
58 void lttng_fixup_net_ns_tls(void);
59 void lttng_fixup_time_ns_tls(void);
60 void lttng_fixup_uts_ns_tls(void);
62 const char *lttng_ust_obj_get_name(int id
);
64 int lttng_get_notify_socket(void *owner
);
67 char* lttng_ust_sockinfo_get_procname(void *owner
);
69 void lttng_ust_sockinfo_session_enabled(void *owner
);
71 void lttng_ust_malloc_wrapper_init(void);
73 ssize_t
lttng_ust_read(int fd
, void *buf
, size_t len
);
75 size_t lttng_ust_dummy_get_size(struct lttng_ctx_field
*field
, size_t offset
);
76 void lttng_ust_dummy_record(struct lttng_ctx_field
*field
,
77 struct lttng_ust_lib_ring_buffer_ctx
*ctx
,
78 struct lttng_channel
*chan
);
79 void lttng_ust_dummy_get_value(struct lttng_ctx_field
*field
,
80 struct lttng_ctx_value
*value
);
81 int lttng_context_is_app(const char *name
);
82 void lttng_ust_fixup_tls(void);
84 extern void (*lttng_ust_liburcu_bp_before_fork
)(void);
85 extern void (*lttng_ust_liburcu_bp_after_fork_parent
)(void);
86 extern void (*lttng_ust_liburcu_bp_after_fork_child
)(void);
89 void lttng_event_notifier_notification_send(
90 struct lttng_event_notifier
*event_notifier
,
91 const char *stack_data
);
93 #ifdef LTTNG_UST_HAVE_PERF_EVENT
94 void lttng_ust_fixup_perf_counter_tls(void);
95 void lttng_perf_lock(void);
96 void lttng_perf_unlock(void);
97 #else /* #ifdef LTTNG_UST_HAVE_PERF_EVENT */
99 void lttng_ust_fixup_perf_counter_tls(void)
103 void lttng_perf_lock(void)
107 void lttng_perf_unlock(void)
110 #endif /* #else #ifdef LTTNG_UST_HAVE_PERF_EVENT */
112 #endif /* _LTTNG_TRACER_CORE_H */