shmem.cpp

这是广泛使用的通信开源项目,对于大容量,高并发的通讯要求完全能够胜任,他广泛可用于网络游戏医学图像网关的高qos要求.更详细的内容可阅读相应的材料

// shmem.cpp,v 1.5 2003/11/09 20:44:19 dhinton Exp

#include "shmem.h"

#include "ace/Log_Msg.h"
#include "ace/OS_NS_stdio.h"
#include "ace/OS_NS_unistd.h"

#if ! defined (ACE_LACKS_SYSV_SHMEM)

/*
  Set the available_ flag to zero & optionally initialize the buf_
  area.
*/

SharedData::SharedData (int initialize)
  : available_ (0)
{
  if (initialize)
    ACE_OS::sprintf (buf_, "UNSET\n");
}

/*
  Write the process ID into the buffer.  This will prove to us that
  the data really is shared between the client and server.
*/
void SharedData::set (void)
{
  ACE_OS::sprintf (buf_,
                   "My PID is (%d)\n",
                   ACE_OS::getpid ());
}

/*
  Display the buffer to the user
*/
void SharedData::show(void)
{
  ACE_DEBUG ((LM_INFO,
              "(%P|%t) Shared Data text is (%s)\n",
              buf_));
}

// Show flag
int SharedData::available(void)
{
  return available_;
}

// Set flag
void SharedData::available(int a)
{
  available_ = a;
}

#endif /* ACE_LACKS_SYSV_SHMEM */