X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=README;h=71d7188460a5ab159f65e6a5b4f50ec5c55135d0;hb=1622ba2253fbbfff8cd0845fd7b543a8cd2ec9bd;hp=0b0d4bd3915a22b3ff624feb667ec67086ff41e1;hpb=efac0f0fe7c961fadf067115c7e6279cf6ff2bac;p=lttng-ust.git

diff --git a/README b/README
index 0b0d4bd3..71d71884 100644
--- a/README
+++ b/README
@@ -47,7 +47,6 @@ INSTALLATION INSTRUCTIONS:
   - Run make.
   - Run make install.
   - Run ldconfig.
-  - See the manual for usage instructions.
 
   If compiling from the git repository, run ./bootstrap before running
   the configure script, to generate it.
@@ -56,9 +55,25 @@ INSTALLATION INSTRUCTIONS:
 USAGE:
 
   - Create an instrumentation header following the tracepoint examples.
-    (see tracepoint.h and tests/hello/tp.h).
-  - Link application with -lust.
-  - (TODO: start tracing with the "lttng" command from lttng-tools)
+    See lttng/tracepoint.h, and examples.
+  - Either compile the Tracepoint probes with the application:
+    - Use "-I." for the compilation unit containing the tracepoint
+      provider include (e.g. tp.c).
+    - Link application with "-ldl -llttng-ust".
+    - Example:
+        tests/hello/  hello.c tp.c ust_tests_hello.h Makefile.example
+  - Or compile the Tracepoint probes separately from the application,
+    using dynamic linking:
+    - Compile the tracepoint provider with "-I.".
+    - Link the tracepoint provider with "-llttng-ust".
+    - Link application with "-ldl".
+    - Set a LD_PRELOAD environment to preload the tracepoint provider
+      shared object before starting the application when tracing is
+      needed.
+    - Example:
+      - tests/demo/   demo.c  tp*.c ust_tests_demo*.h demo-trace
+  - Enable instrumentation and control tracing with the "lttng" command
+    from lttng-tools. See lttng-tools doc/quickstart.txt.
 
 ENVIRONMENT VARIABLES:
 
@@ -71,7 +86,9 @@ ENVIRONMENT VARIABLES:
     "registration done" command before proceeding to execute the main
     program. The default is 3000ms (3 seconds). The timeout value is
     specified in milliseconds. The value 0 means "don't wait". The value
-    -1 means "wait forever".
+    -1 means "wait forever". Setting this environment variable to 0 is
+    recommended for applications with time constraints on the process
+    startup time.
 
 
 TRACE VIEWER:
@@ -97,15 +114,13 @@ PACKAGE CONTENTS:
   - include
     The public header files that will be installed on the system.
 
-  - doc
-    The documentation.
-
   - tests
     Various test programs
 
-  - liblttng-ust-malloc
-    An example library that can be LD_PRELOAD'ed to instrument calls to malloc()
-    in any program without need to recompile it.
+  - liblttng-ust-libc
+    An example library that can be LD_PRELOAD'ed to instrument some
+    calls to libc (currently malloc() and free()) in any program without
+    need to recompile it.
 
   - liblttng-ust-fork
     A library that is LD_PRELOAD'ed, and that hijacks calls to several system
@@ -119,9 +134,12 @@ PACKAGE CONTENTS:
     A static library shared between libust and lttng-tools, that
     provides functions that allow these components to communicate together.
 
+  - libringbuffer
+    The ring buffer implementation used within LTTng-UST.
+
   - snprintf
     An asynchronous signal-safe version of snprintf.
 
-  - java
+  - liblttng-ust-java
     A simple library that uses JNI to allow tracing in java programs.
-    See java/README for build instructions.
+    See liblttng-ust-java/README for build instructions.