Socket.cpp

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* Copyright (C) 2005, Vintela, Inc. All rights reserved.
* Copyright (C) 2006, Novell, Inc. All rights reserved.
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#include "blocxx/BLOCXX_config.h"
#include "blocxx/Socket.hpp"
#include "blocxx/UnnamedPipe.hpp"
#include "blocxx/Assertion.hpp"
#include "blocxx/MutexLock.hpp"
#include "blocxx/Exception.hpp"
#include "blocxx/IOException.hpp"
#include "blocxx/ExceptionIds.hpp"
#include "blocxx/SocketImpl.hpp"
#include "blocxx/GlobalMutex.hpp"


namespace BLOCXX_NAMESPACE
{

BLOCXX_DEFINE_EXCEPTION_WITH_ID(Socket);
BLOCXX_DEFINE_EXCEPTION_WITH_ID(SocketTimeout);

LazyGlobal<Socket::ShutDownMechanism_t, int, Socket::ShutDownMechanismFactory> Socket::s_shutDownMechanism = BLOCXX_LAZY_GLOBAL_INIT(0);

Socket::Socket()
   : m_impl(new SocketImpl)
{
}

static bool b_gotShutDown = false;
static GlobalMutex shutdownMutex = BLOCXX_GLOBAL_MUTEX_INIT();

// STATIC
void
Socket::shutdownAllSockets()
{
   MutexLock mlock(shutdownMutex);

   BLOCXX_ASSERT(s_shutDownMechanism.get() != 0);
   if (!s_shutDownMechanism.get())
   {
      return;
   }

   b_gotShutDown = true;
#if defined(BLOCXX_WIN32)
   ::SetEvent(s_shutDownMechanism);
#else
   if ((s_shutDownMechanism.get())->writeString("die!") == -1)
   {
      BLOCXX_THROW_ERRNO_MSG(IOException, "Failed writing to socket shutdown pipe");
   }
#endif
}

// STATIC
void
Socket::createShutDownMechanism()
{
   MutexLock mlock(shutdownMutex);
   if (!s_shutDownMechanism.get())
   {
#if defined(BLOCXX_WIN32)
      s_shutDownMechanism = ::CreateEvent(0, TRUE, FALSE, 0);
      BLOCXX_ASSERT(s_shutDownMechanism.get() != 0);
#else
      s_shutDownMechanism = UnnamedPipe::createUnnamedPipe();
      (s_shutDownMechanism.get())->setBlocking(UnnamedPipe::E_NONBLOCKING);
#endif
      b_gotShutDown = false;
   }
}
// STATIC
void
Socket::deleteShutDownMechanism()
{
   MutexLock mlock(shutdownMutex);
   if (s_shutDownMechanism.get())
   {
#if defined(BLOCXX_WIN32)
      ::CloseHandle(s_shutDownMechanism);
#endif
      s_shutDownMechanism = static_cast<Socket::ShutDownMechanism_t>(0);
   }
}
// STATIC
bool
Socket::gotShutDown()
{
   MutexLock mlock(shutdownMutex);
   return b_gotShutDown;
}

} // end namespace BLOCXX_NAMESPACE