doc/man: lttng-ust(3): add tracing control to example

[lttng-ust.git] / doc / man / lttng-ust.3.txt

diff --git a/doc/man/lttng-ust.3.txt b/doc/man/lttng-ust.3.txt
index cbf28bb4c8a17790e5a51667823c2e9e5e949483..1f4d7e481e95fb1f0957a8dc86fa5a4817654b66 100644 (file)
--- a/doc/man/lttng-ust.3.txt
+++ b/doc/man/lttng-ust.3.txt
@@ -833,7 +833,53 @@ This example shows all the features documented in the previous
 sections. The <<build-static,static linking>> method is chosen here
 to link the application with the tracepoint provider.
 
-Let's start with the tracepoint provider header file (`tp.h`):
+You can compile the source files and link them together statically
+like this:
+
+[role="term"]
+-------------------------------------
+cc -c -I. tp.c
+cc -c app.c
+cc -o app tp.o app.o -llttng-ust -ldl
+-------------------------------------
+
+Using the man:lttng(1) tool, create an LTTng tracing session, enable
+all the events of this tracepoint provider, and start tracing:
+
+[role="term"]
+----------------------------------------------
+lttng create my-session
+lttng enable-event --userspace 'my_provider:*'
+lttng start
+----------------------------------------------
+
+You may also enable specific events:
+
+[role="term"]
+----------------------------------------------------------
+lttng enable-event --userspace my_provider:big_event
+lttng enable-event --userspace my_provider:event_instance2
+----------------------------------------------------------
+
+Run the application:
+
+[role="term"]
+--------------------
+./app some arguments
+--------------------
+
+Stop the current tracing session and inspect the recorded events:
+
+[role="term"]
+----------
+lttng stop
+lttng view
+----------
+
+
+Tracepoint provider header file
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+`tp.h`:
 
 ------------------------------------------------------------------------
 #undef TRACEPOINT_PROVIDER
@@ -954,7 +1000,10 @@ TRACEPOINT_EVENT_INSTANCE(
 #include <lttng/tracepoint-event.h>
 ------------------------------------------------------------------------
 
-The tracepoint provider source file looks like this (`tp.c`):
+
+Tracepoint provider source file
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+`tp.c`:
 
 ------------------------------------------------------------------------
 #define TRACEPOINT_CREATE_PROBES
@@ -963,7 +1012,10 @@ The tracepoint provider source file looks like this (`tp.c`):
 #include "tp.h"
 ------------------------------------------------------------------------
 
-The included `app.h`, where the application structure resides, is:
+
+Application header file
+~~~~~~~~~~~~~~~~~~~~~~~
+`app.h`:
 
 ------------------------------------------------------------------------
 #ifndef _APP_H
@@ -978,7 +1030,10 @@ struct app_struct {
 #endif /* _APP_H */
 ------------------------------------------------------------------------
 
-Finally, the application itself, `app.c`, using the defined tracepoints:
+
+Application source file
+~~~~~~~~~~~~~~~~~~~~~~~
+`app.c`:
 
 ------------------------------------------------------------------------
 #include <stdlib.h>
@@ -1028,16 +1083,6 @@ int main(int argc, char* argv[])
 }
 ------------------------------------------------------------------------
 
-Here are the steps to compile the source files and link them together
-statically:
-
-[role="term"]
--------------------------------------
-cc -c -I. tp.c
-cc -c app.c
-cc -o app tp.o app.o -llttng-ust -ldl
--------------------------------------
-
 
 ENVIRONMENT VARIABLES
 ---------------------