src/thrd/pool.h


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#include "../incl.h"

#ifndef POOL_H
#define POOL_H

using namespace std;

class pool
{
private:
  static int i_thrd_used;

  typedef struct tpool_work
  {
    void (*routine)(void*); ///
    void *p_void;
    struct tpool_work *next;
  }
  tpool_work_t;

  typedef struct tpool
  {
    // pool characteristics:
    int num_threads;
    int max_queue_size;

    // pool state
    pthread_t *threads;
    int cur_queue_size;

    tpool_work_t *queue_head;
    tpool_work_t *queue_tail;

    pthread_mutex_t queue_lock;
    pthread_cond_t  queue_not_empty;
    pthread_cond_t  queue_not_full;
    pthread_cond_t  queue_empty;
  }
  *tpool_t;

  int i_thrd_pool_size;
  int i_thrd_pool_queue;

  tpool_t thread_pool;

  void tpool_init( tpool_t *tpoolp, int num_worker_threads, int max_queue_size);
  int tpool_add_work( tpool_t tpool, void(*routine)(void*), void* p_void );
  static void* tpool_thread( void *p_void);
  static void run_func( void *p_void );

public:
  pool();

  // inline (speed)!
  void run( void *p_void )
  {
    tpool_add_work( thread_pool, run_func, p_void );
  }

#ifdef NCURSES
  void print_pool_size();
  static void print_threads(int i_thrd_used);
#endif

};

#endif