/**
* Loads traces from active result set ( {@link #setActiveResultSet(TracingResultsNode)}). Index
* of last trace which will be loaded is <code>max(number_of_traces, endIndex)</code>.
*
* @param theStartIndex number of first trace
* @param endIndex number of last trace
*/
public void loadDataFromFile(final long theStartIndex, final long endIndex) {
if (!tracing && !loading) {
synchronized (this) {
if (!tracing && !loading) {
try {
loading = true;
loadingFileInfo = false;
startIndex = theStartIndex;
handler = new TraceEventHandler();
getBackend(true);
TraceCollections.getTracesList().clear();
tracerBackend.getEventDaemon().addHandler(handler);
final OtpErlangLong start = new OtpErlangLong(theStartIndex);
final OtpErlangLong stop = new OtpErlangLong(endIndex);
tracerBackend.call(
Constants.ERLANG_HELPER_MODULE,
FUN_LOAD,
"sii",
new OtpErlangString(activeResultSet.getFileName()),
start,
stop);
} catch (final RpcException e) {
ErlLogger.error(e);
errorObject = e;
finishLoading(TracingStatus.EXCEPTION_THROWN);
}
}
}
}
}
/**
* Performs actions after loading file or trace data.
*
* @param status status
*/
private void finishLoading(final TracingStatus status) {
tracerBackend.getEventDaemon().removeHandler(handler);
for (final ITraceNodeObserver listener : listeners) {
try {
if (loadingFileInfo) {
listener.finishLoadingFile(status);
} else {
listener.finishLoadingTraces(status);
}
} catch (final Exception e) {
ErlLogger.error(e);
}
}
loading = false;
tracing = false;
}
public Object[] getElements(final Object parent) {
final IBackend bk = getBackend();
if (bk == null) {
return new OtpErlangObject[] {};
}
bk.getEventDaemon().addHandler(handler);
final OtpErlangList r = ErlideProclist.getProcessList(bk);
if (r.arity() == 0) {
return new OtpErlangObject[] {};
}
final OtpErlangObject[] ss = new OtpErlangObject[r.elements().length];
for (int i = 0; i < r.elements().length; i++) {
final OtpErlangTuple e = (OtpErlangTuple) r.elementAt(i);
ss[i] = e;
}
return ss;
}
/**
* Loads information about given file.
*
* @param path path
*/
public void loadFile(final String path) {
if (!tracing && !loading) {
synchronized (this) {
if (!tracing && !loading) {
try {
loading = true;
loadingFileInfo = true;
handler = new TraceEventHandler();
getBackend(true);
tracerBackend.getEventDaemon().addHandler(handler);
tracerBackend.call(
Constants.ERLANG_HELPER_MODULE, FUN_FILE_INFO, "s", new OtpErlangString(path));
} catch (final RpcException e) {
ErlLogger.error(e);
errorObject = e;
finishLoading(TracingStatus.EXCEPTION_THROWN);
}
}
}
}
}
/**
* Starts tracing given nodes.
*
* @return <code>true</code> if successful, <code>false</code> otherwise
*/
public TracingStatus start() {
TracingStatus status = TracingStatus.OK;
if (!tracing) {
synchronized (this) {
if (!tracing) {
try {
tracing = true;
getBackend(true);
loadingFileInfo = true;
handler = new TraceEventHandler();
tracerBackend.getEventDaemon().addHandler(handler);
// list of nodes being traced
final List<OtpErlangObject> erlangObjects = new ArrayList<OtpErlangObject>();
notActivatedNodes = new HashSet<String>();
for (final TracedNode tracedNode : tracedNodes) {
if (tracedNode.isEnabled()) {
final OtpErlangAtom name = new OtpErlangAtom(tracedNode.getNodeName());
final OtpErlangAtom cookie = new OtpErlangAtom(tracedNode.getCookie());
erlangObjects.add(new OtpErlangTuple(new OtpErlangObject[] {name, cookie}));
notActivatedNodes.add(tracedNode.getNodeName());
}
}
final OtpErlangList nodes =
new OtpErlangList(erlangObjects.toArray(new OtpErlangObject[erlangObjects.size()]));
// net tick time
final int tickTimeValue =
Activator.getDefault().getPreferenceStore().getInt(PreferenceNames.TICK_TIME);
final OtpErlangInt netTickTime = new OtpErlangInt(tickTimeValue);
final OtpErlangObject callResult =
tracerBackend.call(
Constants.ERLANG_HELPER_MODULE,
FUN_START,
"xsi",
nodes,
Constants.OUTPUT_FILE,
netTickTime);
status = processResult(callResult);
if (TracingStatus.OK.equals(status)
|| TracingStatus.NOT_ALL_NODES_ACTIVATED.equals(status)) {
setProcessFlags();
setFunctionTracePatterns();
for (final ITraceNodeObserver listener : listeners) {
try {
listener.startTracing();
} catch (final Exception e) {
ErlLogger.error(e);
}
}
} else {
tracing = false;
}
} catch (final Exception e) {
e.printStackTrace();
ErlLogger.error("Could not start tracing tool: " + e.getMessage());
status = TracingStatus.EXCEPTION_THROWN;
errorObject = e;
tracing = false;
}
}
}
}
return status;
}
public void dispose() {
final IBackend backend = getBackend();
if (backend != null) {
backend.getEventDaemon().removeHandler(handler);
}
}
