GILManager.cpp

#include "stdafx.h"
#include "GILManager.h"

namespace NppPythonScript
{
   //    GILManager* GILManager::s_gilManagerInstance = NULL;

   GILLock::GILLock()
      : m_hasLock(false == doIHaveTheGIL())
   {
      if (m_hasLock)
      {
         //DEBUG_TRACE(L"Acquiring GIL...\n");
         m_state = PyGILState_Ensure();
         //DEBUG_TRACE(L"GIL Acquired.\n");
      }
   }

   GILLock::~GILLock()
   {
      if (m_hasLock)
      {
         //DEBUG_TRACE(L"Releasing GIL...\n");
         PyGILState_Release(m_state);
         //DEBUG_TRACE(L"GIL Released.\n");
      }
   }


   GILRelease::GILRelease()
      : m_lockReleased(doIHaveTheGIL())
   {
      if (m_lockReleased)
      {
         //DEBUG_TRACE(L"Temp GIL Release requested\n");
         m_threadState = PyEval_SaveThread();
      }
      else
      {
         //DEBUG_TRACE(L"Temp GIL Release ignored- we don't have the GIL\n");
      }

   }

   GILRelease::~GILRelease()
   {
      if (m_lockReleased)
      {
         //DEBUG_TRACE(L"Re-acquiring GIL after temporary release\n");
         PyEval_RestoreThread(m_threadState);
         //DEBUG_TRACE(L"GIL reacquired after temporary release\n");
      }
   }

   void GILRelease::reacquire()
   {
      if (m_lockReleased)
      {
         //DEBUG_TRACE(L"GILRelease::reacquire() - reacquiring GIL\n");
         PyEval_RestoreThread(m_threadState);
         //DEBUG_TRACE(L"GIL Reacquired after temporary release (in reacquire())\n");
         m_lockReleased = false;
      }
   }
}