fprofiler.hpp

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/* Copyright 1994, 1995 LongView Technologies L.L.C. $Revision: 1.6 $ */
/* Copyright (c) 2006, Sun Microsystems, Inc.
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// a simple flat profiler for Delta

class pnode;
class FlatProfilerTask;

enum TickPosition {
  in_code,
  in_primitive,
  in_compiler,
  in_pic,
  other
};

class FlatProfiler: AllStatic {
 private:
  static pnode**  table;
  static int table_size;

  static DeltaProcess*     proc;
  static FlatProfilerTask* task;
  static timer             time;

  static int          gc_ticks;         // total ticks in GC/scavenge
  static int   semaphore_ticks;
  static int        stub_ticks;
  static int    compiler_ticks;         // total ticks in compilation
  static int     unknown_ticks;

  static int total_ticks() {
    return gc_ticks
         + semaphore_ticks
         + stub_ticks
         + unknown_ticks;
  }

  friend class FlatProfilerTask;

  static void interpreted_update(methodOop method, klassOop klass, TickPosition where);
  static void compiled_update(nmethod* nm, TickPosition where);
  static int entry(int value);

  static void record_tick_for_running_frame(frame fr);
  static void record_tick_for_calling_frame(frame fr);

 public:
  static void allocate_table();

  static void reset();
  static void engage(DeltaProcess* p);
  static DeltaProcess* disengage();
  static bool is_active();
  static void print(int cutoff);
  static void record_tick();

  static DeltaProcess* process() { return proc; }
};

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