conds_test.cpp

来自「一个开源的网络开发库ACE」· C++ 代码 · 共 74 行

// conds_test.cpp,v 1.2 1998/10/15 04:50:37 nanbor Exp

#define  ACE_BUILD_SVC_DLL
#include "ace/Synch.h"
#include "Performance_Test_Options.h"
#include "Benchmark_Performance.h"

ACE_RCSID(Synch_Benchmarks, conds_test, "conds_test.cpp,v 1.2 1998/10/15 04:50:37 nanbor Exp")

#if defined (ACE_HAS_THREADS)

class ACE_Svc_Export Cond_Signal_Test : public Benchmark_Performance
{
public:
  virtual int svc (void);

private:
  static ACE_Thread_Mutex mutex;
  static int resources;

  static ACE_Condition_Thread_Mutex notfull;
  static ACE_Condition_Thread_Mutex notempty;
};

ACE_Thread_Mutex Cond_Signal_Test::mutex;
int Cond_Signal_Test::resources;
ACE_Condition_Thread_Mutex Cond_Signal_Test::notfull (Cond_Signal_Test::mutex);
ACE_Condition_Thread_Mutex Cond_Signal_Test::notempty (Cond_Signal_Test::mutex);

int
Cond_Signal_Test::svc (void)
{
  int ni = this->thr_id ();
  synch_count = 2;

  // This is a horrible hack and only works for Solaris threads.  This
  // clearly needs to change...
  if (ni == 4)
    while (!this->done ())
      {
	mutex.acquire ();

	while (resources > 0)
	  notfull.wait ();

	performance_test_options.thr_work_count[ni]++;
	resources = performance_test_options.thr_count () - 1;
	buffer++;
	notempty.signal ();
	mutex.release ();
      }
  else
    while (!this->done ())
      {
	mutex.acquire ();
	while (resources == 0)
	  notempty.wait ();
	performance_test_options.thr_work_count[ni]++;
	buffer++;
	if (--resources == 0)
	  notfull.signal ();
	mutex.release ();
      }

  /* NOTREACHED */
  return 0;
}

ACE_SVC_FACTORY_DECLARE (Cond_Signal_Test)
ACE_SVC_FACTORY_DEFINE  (Cond_Signal_Test)

// ACE_Service_Object_Type cst (&cond_signal_test, "Condition_Signal_Test");
#endif /* ACE_HAS_THREADS */