import java.util.logging.LogRecord;
import java.util.logging.LogManager;
import java.util.logging.Level;
-import java.util.ArrayList;
+import java.util.logging.Logger;
+import java.util.Collections;
import java.util.HashMap;
+import java.util.Map;
import org.lttng.ust.jul.LTTngUst;
-/* Note: This is taken from the LTTng tools ABI. */
-class LTTngLogLevelABI {
- /* Loglevel type. */
- public static final int LOGLEVEL_TYPE_ALL = 0;
- public static final int LOGLEVEL_TYPE_RANGE = 1;
- public static final int LOGLEVEL_TYPE_SINGLE = 2;
-}
-
-public class LTTngLogHandler extends Handler {
+class LTTngLogger {
/*
- * Indicate if the enable all event has been seen and if yes logger that we
- * enabled should use the loglevel/type below.
+ * The log handler is attached to the logger when the reference count is
+ * nonzero. Each event referring to a logger holds a reference to that
+ * logger. If down to 0, this object is removed from the handler.
*/
- public int logLevelUseAll = 0;
- public ArrayList<LTTngLogLevel> logLevelsAll =
- new ArrayList<LTTngLogLevel>();
+ public int refcount;
+ public String name;
+ Logger logger;
+
+ public LTTngLogger(String name, Logger logger) {
+ this.name = name;
+ this.refcount = 0;
+ this.logger = logger;
+ }
+ public void attach(LTTngLogHandler handler) {
+ this.logger.addHandler(handler);
+ }
+
+ public void detach(LTTngLogHandler handler) {
+ this.logger.removeHandler(handler);
+ }
+}
+
+public class LTTngLogHandler extends Handler {
/* Am I a root Log Handler. */
public int is_root = 0;
public LogManager logManager;
- /* Indexed by name and corresponding LTTngEvent. */
- private HashMap<String, LTTngEvent> eventMap =
- new HashMap<String, LTTngEvent>();
+ /* Logger object attached to this handler that can trigger a tracepoint. */
+ private Map<String, LTTngLogger> loggerMap =
+ Collections.synchronizedMap(new HashMap<String, LTTngLogger>());
+ /* Constructor */
public LTTngLogHandler(LogManager logManager) {
super();
LTTngUst.init();
}
- /**
- * Add event to handler hash map if new.
- *
- * @return 0 if it did not exist else 1.
+ /*
+ * Return true if the logger is enabled and attached. Else, if not found,
+ * return false.
+ */
+ public boolean exists(String name) {
+ if (loggerMap.get(name) != null) {
+ return true;
+ } else {
+ return false;
+ }
+ }
+
+ /*
+ * Attach an event to this handler. If no logger object exists, one is
+ * created else the refcount is incremented.
*/
- public int setEvent(LTTngEvent new_event) {
- LTTngEvent event;
-
- event = eventMap.get(new_event.name);
- if (event == null) {
- eventMap.put(new_event.name, new_event);
- /* Did not exists. */
- return 0;
+ public void attachEvent(LTTngEvent event) {
+ Logger logger;
+ LTTngLogger lttngLogger;
+
+ /* Does the logger actually exist. */
+ logger = this.logManager.getLogger(event.name);
+ if (logger == null) {
+ /* Stop attach right now. */
+ return;
+ }
+
+ lttngLogger = loggerMap.get(event.name);
+ if (lttngLogger == null) {
+ lttngLogger = new LTTngLogger(event.name, logger);
+
+ /* Attach the handler to the logger and add is to the map. */
+ lttngLogger.attach(this);
+ lttngLogger.refcount = 1;
+ loggerMap.put(lttngLogger.name, lttngLogger);
} else {
- /* Add new event loglevel to existing event. */
- event.logLevels.addAll(new_event.logLevels);
- /* Already exists. */
- return 1;
+ lttngLogger.refcount += 1;
+ }
+ }
+
+ /*
+ * Dettach an event from this handler. If the refcount goes down to 0, the
+ * logger object is removed thus not attached anymore.
+ */
+ public void detachEvent(LTTngEvent event) {
+ LTTngLogger logger;
+
+ logger = loggerMap.get(event.name);
+ if (logger != null) {
+ logger.refcount -= 1;
+ if (logger.refcount == 0) {
+ /* Dettach from handler since no more event is associated. */
+ logger.detach(this);
+ loggerMap.remove(logger);
+ }
}
}
* Cleanup this handler state meaning put it back to a vanilla state.
*/
public void clear() {
- this.eventMap.clear();
- this.logLevelsAll.clear();
+ this.loggerMap.clear();
}
@Override
@Override
public void publish(LogRecord record) {
- int fire_tp = 0, rec_log_level, ev_type, ev_log_level;
- LTTngEvent event;
- LTTngLogLevel lttngLogLevel;
- String logger_name = record.getLoggerName();
-
- /* Get back the event if any and check for loglevel. */
- event = eventMap.get(logger_name);
- if (event != null) {
- for (LTTngLogLevel ev_log : event.logLevels) {
- /* Get record and event log level. */
- rec_log_level = record.getLevel().intValue();
- ev_log_level = ev_log.level;
-
- switch (ev_log.type) {
- case LTTngLogLevelABI.LOGLEVEL_TYPE_RANGE:
- if (ev_log_level <= rec_log_level) {
- fire_tp = 1;
- }
- break;
- case LTTngLogLevelABI.LOGLEVEL_TYPE_SINGLE:
- if (ev_log_level == rec_log_level) {
- fire_tp = 1;
- }
- break;
- case LTTngLogLevelABI.LOGLEVEL_TYPE_ALL:
- fire_tp = 1;
- break;
- }
-
- /*
- * If we match, stop right now else continue to the next
- * loglevel contained in the event.
- */
- if (fire_tp == 1) {
- break;
- }
- }
- } else {
- /* No loglevel attached thus fire tracepoint. */
- fire_tp = 1;
- }
+ LTTngLogger logger;
- if (fire_tp == 0) {
+ logger = loggerMap.get(record.getLoggerName());
+ if (logger == null) {
+ /* Ignore and don't fire TP. */
return;
}
projects / lttng-ust.git / blobdiff