115 
 116  public:
 117   AbstractWorkGang(const char* name, uint workers, bool are_GC_task_threads, bool are_ConcurrentGC_threads) :
 118       _name(name),
 119       _total_workers(workers),
 120       _active_workers(UseDynamicNumberOfGCThreads ? 1U : workers),
 121       _are_GC_task_threads(are_GC_task_threads),
 122       _are_ConcurrentGC_threads(are_ConcurrentGC_threads)
 123   { }
 124 
 125   // Initialize workers in the gang.  Return true if initialization succeeded.
 126   bool initialize_workers();
 127 
 128   bool are_GC_task_threads()      const { return _are_GC_task_threads; }
 129   bool are_ConcurrentGC_threads() const { return _are_ConcurrentGC_threads; }
 130 
 131   uint total_workers() const { return _total_workers; }
 132 
 133   virtual uint active_workers() const {
 134     assert(_active_workers <= _total_workers,
 135            err_msg("_active_workers: %u > _total_workers: %u", _active_workers, _total_workers));
 136     assert(UseDynamicNumberOfGCThreads || _active_workers == _total_workers,
 137            "Unless dynamic should use total workers");
 138     return _active_workers;
 139   }
 140   void set_active_workers(uint v) {
 141     assert(v <= _total_workers,
 142            "Trying to set more workers active than there are");
 143     _active_workers = MIN2(v, _total_workers);
 144     assert(v != 0, "Trying to set active workers to 0");
 145     _active_workers = MAX2(1U, _active_workers);
 146     assert(UseDynamicNumberOfGCThreads || _active_workers == _total_workers,
 147            "Unless dynamic should use total workers");
 148   }
 149 
 150   // Return the Ith worker.
 151   AbstractGangWorker* worker(uint i) const;
 152 
 153   void threads_do(ThreadClosure* tc) const;
 154 
 155   // Debugging.

 115 
 116  public:
 117   AbstractWorkGang(const char* name, uint workers, bool are_GC_task_threads, bool are_ConcurrentGC_threads) :
 118       _name(name),
 119       _total_workers(workers),
 120       _active_workers(UseDynamicNumberOfGCThreads ? 1U : workers),
 121       _are_GC_task_threads(are_GC_task_threads),
 122       _are_ConcurrentGC_threads(are_ConcurrentGC_threads)
 123   { }
 124 
 125   // Initialize workers in the gang.  Return true if initialization succeeded.
 126   bool initialize_workers();
 127 
 128   bool are_GC_task_threads()      const { return _are_GC_task_threads; }
 129   bool are_ConcurrentGC_threads() const { return _are_ConcurrentGC_threads; }
 130 
 131   uint total_workers() const { return _total_workers; }
 132 
 133   virtual uint active_workers() const {
 134     assert(_active_workers <= _total_workers,
 135            "_active_workers: %u > _total_workers: %u", _active_workers, _total_workers);
 136     assert(UseDynamicNumberOfGCThreads || _active_workers == _total_workers,
 137            "Unless dynamic should use total workers");
 138     return _active_workers;
 139   }
 140   void set_active_workers(uint v) {
 141     assert(v <= _total_workers,
 142            "Trying to set more workers active than there are");
 143     _active_workers = MIN2(v, _total_workers);
 144     assert(v != 0, "Trying to set active workers to 0");
 145     _active_workers = MAX2(1U, _active_workers);
 146     assert(UseDynamicNumberOfGCThreads || _active_workers == _total_workers,
 147            "Unless dynamic should use total workers");
 148   }
 149 
 150   // Return the Ith worker.
 151   AbstractGangWorker* worker(uint i) const;
 152 
 153   void threads_do(ThreadClosure* tc) const;
 154 
 155   // Debugging.