GlenTiki

vagrant@vagrant-ubuntu-trusty-64:~$ lttng create sessionA
Session sessionA created.
Traces will be written in /home/vagrant/lttng-traces/sessionA-20150428-145141
vagrant@vagrant-ubuntu-trusty-64:~$ lttng list
Available tracing sessions:
  1) sessionA (/home/vagrant/lttng-traces/sessionA-20150428-145141) [inactive]
    Trace path: /home/vagrant/lttng-traces/sessionA-20150428-145141
    Live timer interval (usec): 0

GlenTiki

var obj = new ObjectThatDoesAsyncStuff(); //create object


// create some `when` checks - when these conditions are met the code in them should run
// (right after the variable has been changed, this async `if` should be run on it)
when(obj.someNumber > 10 && obj.someNumber < 20) {
	console.log('its in range! Fire the lazer!!');
}

when(obj.commandReady) {

GlenTiki

Making all in lttng-sessiond
make[3]: Entering directory `/home/vagrant/lttng-tools/src/bin/lttng-sessiond'
  CC       save.o
save.c: In function ‘get_ust_context_type_string’:
save.c:263:7: error: ‘LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER’ undeclared (first use in this function)
  case LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER:
       ^
save.c:263:7: note: each undeclared identifier is reported only once for each function it appears in
save.c: In function ‘save_ust_context’:
save.c:860:23: error: ‘LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER’ undeclared (first use in this function)

GlenTiki

What we have: a bunch of global trace events.

Globals:
 LTTNG_NET_SERVER_CONNECTION
 ...
 &&
 DTRACE_NET_SERVER_CONNECTION
 ...

GlenTiki

#define SLURP_STRING(obj, member, valp) \
  if (!(obj)->IsObject()) { \
    return env->ThrowError( \
        "expected object for " #obj " to contain string member " #member); \
  } \
  node::Utf8Value _##member(env->isolate(), \
      obj->Get(OneByteString(env->isolate(), #member))); \
  if ((*(const char **)valp = *_##member) == nullptr) \
    *(const char **)valp = "<unknown>";

GlenTiki

libust[2727/2727]: Warning: HOME environment variable not set. 
Disabling LTTng-UST per-user tracing. (in setup_local_apps() at lttng-ust-comm.c:305)

GlenTiki

libust[2727/2727]: Warning: HOME environment variable not set. Disabling LTTng-UST per-user tracing. (in setup_local_apps() at lttng-ust-comm.c:305)