README

   1 LTTNG USERSPACE TRACER (UST)
   2 ----------------------------
   3
   4 UST web site and manual: http://lttng.org/ust
   5
   6 Updated versions of this package may be found at:
   7
   8   * Website:  http://lttng.org/ust
   9   * Releases: http://lttng.org/files/ust/releases
  10   * GitWeb:   http://git.dorsal.polymtl.ca (project: ust)
  11   * Git:      git://git.dorsal.polymtl.ca/git/ust.git
  12
  13
  14 PREREQUISITES:
  15
  16   - liburcu
  17     Userspace RCU library, by Mathieu Desnoyers and Paul E. McKenney
  18
  19     -> This release was tested with liburcu v0.4.6
  20
  21       * Debian/Ubuntu package: liburcu-dev
  22       * Website:  http://lttng.org/urcu
  23       * Releases: http://lttng.org/files/urcu
  24       * GitWeb:   http://lttng.org/cgi-bin/gitweb.cgi?p=userspace-rcu.git;a=summary
  25       * Git:      git://lttng.org/userspace-rcu.git
  26
  27
  28 INSTALLATION INSTRUCTIONS:
  29
  30   - Download, compile and install liburcu.
  31   - In this package's tree, run ./configure.
  32   - Run make.
  33   - Run make install.
  34   - Run ldconfig.
  35   - See the manual for usage instructions.
  36
  37   If compiling from the git repository, run ./bootstrap before running
  38   the configure script, to generate it.
  39
  40
  41 TRACE VIEWER:
  42
  43   LTTV is used for viewing UST traces. LTTV may be obtained at
  44   http://lttng.org in the Downloads section.
  45
  46   This release has been tested with LTTV 0.12.32.
  47
  48
  49 PACKAGE CONTENTS:
  50
  51   This package contains the following elements.
  52
  53   - libust
  54     The actual userspace tracing library that must be linked to the
  55     instrumented programs.
  56
  57   - ustctl
  58     A program to control the tracing of userspace applications. It can list
  59     markers, start the tracing, stop the tracing, enable/disable markers, etc.
  60
  61   - include
  62     The public header files that will be installed on the system.
  63
  64   - ust-consumerd
  65     The daemon that collects trace data and writes it to the disk.
  66
  67   - doc
  68     The documentation.
  69
  70   - tests
  71     Various test programs
  72
  73   - libustinstr-malloc
  74     An example library that can be LD_PRELOAD'ed to instrument calls to malloc()
  75     in any program without need to recompile it.
  76
  77   - libustfork
  78     A library that is LD_PRELOAD'ed, and that hijacks calls to several system
  79     calls in order to trace across these calls. It _has_ to be LD_PRELOAD'ed
  80     in order to hijack calls. In contrast, libust may be linked at build time.
  81
  82   - libustctl
  83     A library to control tracing in other processes. Used by ustctl.
  84
  85   - libustcomm
  86     A static library shared between libust, ust-consumerd and libustctl, that
  87     provides functions that allow these components to communicate together.
  88
  89   - libustconsumer
  90     A library to create ust consumers by registering callbacks, used by
  91     ust-consumerd.
  92
  93   - snprintf
  94     An asynchronous signal-safe version of snprintf.
  95
  96   - java
  97     A simple library that uses JNI to allow tracing in java programs.