X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;ds=sidebyside;f=README;h=52aebd8940c7cf01770f949beb944f2e63b54a1a;hb=66bdd22a001a064327026551f8c1ba76a812421b;hp=ad9acd77b5664753b5947d5fe9c4c2a3ffa1f73c;hpb=b834deadbfa8a78ae1d00440fd91c41dfd351eba;p=lttng-ust.git diff --git a/README b/README index ad9acd77..52aebd89 100644 --- a/README +++ b/README @@ -67,7 +67,7 @@ USAGE: "TRACEPOINT_DEFINE" and include the tracepoint provider. - Use "-I." for the compilation unit containing the tracepoint provider include (e.g. tp.c). - - Link application with "-ldl". + - Link application with "-ldl" on Linux, with "-lc" on BSD. - If building the provider directly into the application, link the application with "-llttng-ust". - If building a static library for the provider, link the static @@ -75,7 +75,7 @@ USAGE: - Include the tracepoint provider header into all C files using the provider. - Example: - tests/hello/ hello.c tp.c ust_tests_hello.h Makefile.example + tests/hello/ hello.c tp.c ust_tests_hello.h Makefile.example.* 2) Compile the Tracepoint Provider separately from the application, using dynamic linking: @@ -87,7 +87,7 @@ USAGE: files that use the provider. - Compile the tracepoint provider with "-I.". - Link the tracepoint provider with "-llttng-ust". - - Link application with "-ldl". + - Link application with "-ldl" on Linux, "-lc" on BSD. - Set a LD_PRELOAD environment to preload the tracepoint provider shared object before starting the application when tracing is needed. Another way is to dlopen the tracepoint probe when needed @@ -113,6 +113,10 @@ ENVIRONMENT VARIABLES: recommended for applications with time constraints on the process startup time. + - The compilation flag "-DLTTNG_UST_DEBUG_VALGRIND" should be enabled + at build time to allow liblttng-ust to be used with valgrind + (side-effect: disables per-cpu buffering). + TRACE VIEWER: