src/hotspot/share/utilities/events.cpp

rev 55013 : [mq]: VM.events

*** 49,78 ****
    _next = Events::_logs;
    Events::_logs = this;
  }
  
  // For each registered event logger, print out the current contents of
! // the buffer.  This is normally called when the JVM is crashing.
! void Events::print_all(outputStream* out) {
    EventLog* log = _logs;
    while (log != NULL) {
!     log->print_log_on(out);
      log = log->next();
    }
  }
  
  void Events::print() {
    print_all(tty);
  }
  
  void Events::init() {
    if (LogEvents) {
!     _messages = new StringEventLog("Events");
!     _exceptions = new ExceptionsEventLog("Internal exceptions");
!     _redefinitions = new StringEventLog("Classes redefined");
!     _class_unloading = new UnloadingEventLog("Classes unloaded");
!     _deopt_messages = new StringEventLog("Deoptimization events");
    }
  }
  
  void eventlog_init() {
    Events::init();
--- 49,103 ----
    _next = Events::_logs;
    Events::_logs = this;
  }
  
  // For each registered event logger, print out the current contents of
! // the buffer.
! void Events::print_all(outputStream* out, int max) {
    EventLog* log = _logs;
    while (log != NULL) {
!     log->print_log_on(out, max);
      log = log->next();
    }
  }
  
+ // Print a single event log specified by name.
+ void Events::print_one(outputStream* out, const char* log_name, int max) {
+   EventLog* log = _logs;
+   int num_printed = 0;
+   while (log != NULL) {
+     if (log->matches_name(log_name)) {
+       log->print_log_on(out, max);
+       num_printed ++;
+     }
+     log = log->next();
+   }
+   // Write a short error note if no name matched.
+   if (num_printed == 0) {
+     out->print_cr("The name \"%s\" did not match any known event log. "
+                   "Valid event log names are:", log_name);
+     EventLog* log = _logs;
+     while (log != NULL) {
+       log->print_names(out);
+       out->cr();
+       log = log->next();
+     }
+   }
+ }
+ 
+ 
  void Events::print() {
    print_all(tty);
  }
  
  void Events::init() {
    if (LogEvents) {
!     _messages = new StringEventLog("Events", "events");
!     _exceptions = new ExceptionsEventLog("Internal exceptions", "exc");
!     _redefinitions = new StringEventLog("Classes redefined", "redef");
!     _class_unloading = new UnloadingEventLog("Classes unloaded", "unload");
!     _deopt_messages = new StringEventLog("Deoptimization events", "deopt");
    }
  }
  
  void eventlog_init() {
    Events::init();