Fix: check ht_del ret value of ust app session
[lttng-tools.git] / README
1 LTTng Trace Control
2 ----------------
3
4 Please visit http://lttng.org for more information.
5
6 Latest development can be found at:
7
8 * Gitweb : http://git.lttng.org/lttng-tools.git/
9 * Git : git://git.lttng.org/lttng-tools.git
10
11 REQUIREMENTS:
12
13 - Linux kernel >= 2.6.27
14 pipe2(), epoll_create1() and SOCK_CLOEXEC are needed to run the session
15 daemon. There were introduce in the Linux 2.6.27
16
17 - liburcu
18 Userspace RCU library, by Mathieu Desnoyers and Paul E. McKenney
19
20 -> Tested with liburcu >= v0.7.2
21
22 * Debian/Ubuntu package: liburcu-dev
23 * Git : git://git.lttng.org/userspace-rcu.git
24 * Website: http://lttng.org/urcu
25
26 - libpopt >= 1.13
27 Library for parsing command line parameters
28
29 * Debian/Ubuntu package: libpopt-dev
30
31 - SWIG >= 2.0 (optional)
32 Needed for Python bindings (--enable-python-bindings).
33
34 * Debian/Ubuntu package: swig2.0
35
36 - python-dev (optional)
37 Python headers
38
39 * Debian/Ubuntu package: python-dev
40
41 - For kernel tracing: modprobe
42
43 - bash
44 Needed for running "make check".
45
46 For developers using the git tree:
47
48 This source tree is based on the autotools suite from GNU to simplify
49 portability. Here are some things you should have on your system in order to
50 compile the git repository tree :
51
52 - GNU autotools (automake >=1.10, autoconf >=2.50, autoheader >=2.50)
53 (make sure your system wide "automake" points to a recent version!)
54 - GNU Libtool >=2.2
55 (for more information, go to http://www.gnu.org/software/autoconf/)
56 - GNU Gold >= 2.22
57 (Before this version we hit a known bug documented at:
58 http://sourceware.org/bugzilla/show_bug.cgi?id=11317)
59 - flex >= 2.5.35
60 - bison >= 2.4
61
62 If you get the tree from the repository, you will need to use the "bootstrap"
63 script in the root of the tree. It calls all the GNU tools needed to prepare the
64 tree configuration.
65
66 INSTALLATION INSTRUCTIONS:
67
68 - Download, compile and install the prerequisites.
69 Then:
70 $ ./configure
71 $ make
72 $ sudo make install
73 $ sudo ldconfig
74
75 If compiling from the git repository, run ./bootstrap before running
76 the configure script, to generate it.
77
78 If you want Python bindings, run ./configure --enable-python-bindings.
79
80 USAGE:
81
82 Please see doc/quickstart.txt to help you start tracing. You can also use the
83 -h/--help command on 'lttng' and all other commands offered in this tool (Ex:
84 lttng enable-event -h).
85
86 A network streaming HOWTO can be found in doc/streaming-howto.txt which quickly
87 helps you understand how to stream a LTTng 2.0 trace.
88
89 A Python HOWTO can be found in doc/python-howto.txt which quickly
90 helps you understand how to use the Python module to control the LTTng API.
91
92 PACKAGE CONTENTS:
93
94 This package contains the following elements:
95
96 - liblttng-ctl
97 The LTTng tracing control library.
98
99 - libsessiond-comm (internal)
100 The lttng-sessiond communication library. In order to talk with
101 lttng-sessiond, this library must be used.
102
103 - libkernel-ctl (internal)
104 Kernel tracer control and ioctl definitions.
105
106 - libconsumer (internal)
107 Library for Kernel and (optionally) UST trace consumer.
108
109 - libkernel-consumer (internal)
110 Library for Kernel consumer control
111
112 - libust-consumer (internal)
113 Library for UST consumer control
114
115 - libhashtable (internal)
116 Library wrapper over URCU hashtables.
117
118 - libcommon (internal)
119 Contains multiple useful function call used by the whole tree.
120
121 - libcompat (internal)
122 Compatibility library mostly for FreeBSD and Linux.
123
124 - librelayd (internal)
125 Library for all relayd interactions over the network.
126
127 - lttng-relayd
128 The relay daemon used for network streaming
129
130 - lttng-consumerd
131 The consumer daemon which uses libconsumer.
132
133 - lttng-sessiond
134 The LTTng session daemon binary.
135
136 - lttng
137 The LTTng tracer command line control tool.
138
139 - include (lttng.h --> installed in $(includedir)/lttng/lttng.h)
140 The liblttngctl API header file.
141
142 - tests
143 Various test programs.
144
145 - doc
146 Various documentations and quickstart guide.
147
148 - extras
149 Contains extra data such as bash completion file.
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