move mutexImpl etc. from pandaexpress

dtool/src/interrogatedb/Sources.pp

@@ -15,8 +15,14 @@
      interrogateManifest.h interrogateType.I interrogateType.h  \
      interrogate_datafile.I interrogate_datafile.h  \
      interrogate_interface.h interrogate_request.h \
+     mutexImpl.h \
+     mutexDummyImpl.h mutexDummyImpl.I \
+     mutexNsprImpl.h mutexNsprImpl.I \
+     mutexPosixImpl.h mutexPosixImpl.I \
+     mutexWin32Impl.h mutexWin32Impl.I \
      py_panda.h \
      register_type.I register_type.h \
+     selectThreadImpl.h \
      typedObject.I typedObject.h \
      typeHandle.I typeHandle.h \
      typeRegistry.I typeRegistry.h \
@@ -32,6 +38,10 @@
      interrogateFunctionWrapper.cxx interrogateManifest.cxx  \
      interrogateType.cxx interrogate_datafile.cxx  \
      interrogate_interface.cxx interrogate_request.cxx  \
+     mutexDummyImpl.cxx \
+     mutexNsprImpl.cxx \
+     mutexPosixImpl.cxx \
+     mutexWin32Impl.cxx \
      py_panda.cxx \
      register_type.cxx \
      typedObject.cxx \
@@ -41,8 +51,15 @@
 
   #define INSTALL_HEADERS \
     interrogate_interface.h interrogate_request.h vector_int.h \
-    config_interrogatedb.h py_panda.h \
+    config_interrogatedb.h \
+    mutexImpl.h \
+    mutexDummyImpl.h mutexDummyImpl.I \
+    mutexNsprImpl.h mutexNsprImpl.I \
+    mutexPosixImpl.h mutexPosixImpl.I \
+    mutexWin32Impl.h mutexWin32Impl.I \
+    py_panda.h \
     register_type.I register_type.h \
+    selectThreadImpl.h \
     typedObject.I typedObject.h \
     typeHandle.I typeHandle.h \
     typeRegistry.I typeRegistry.h \

dtool/src/interrogatedb/interrogatedb_composite1.cxx

@@ -1,4 +1,3 @@
-
 #include "vector_int.cxx"
 #include "dtool_super_base.cxx"
 #include "config_interrogatedb.cxx"
@@ -9,5 +8,7 @@
 #include "interrogateFunctionWrapper.cxx"
 #include "interrogate_datafile.cxx"
 #include "interrogate_interface.cxx"
+#include "interrogateDatabase.cxx"
+#include "interrogateManifest.cxx"
 
 

dtool/src/interrogatedb/interrogatedb_composite2.cxx

@@ -1,8 +1,9 @@
-
-#include "interrogateDatabase.cxx"
-#include "interrogateManifest.cxx"
 #include "interrogateType.cxx"
 #include "interrogate_request.cxx"
+#include "mutexDummyImpl.cxx"
+#include "mutexNsprImpl.cxx"
+#include "mutexPosixImpl.cxx"
+#include "mutexWin32Impl.cxx"
 #include "py_panda.cxx"
 #include "register_type.cxx"
 #include "typedObject.cxx"

dtool/src/interrogatedb/mutexDummyImpl.I

@@ -0,0 +1,54 @@
+// Filename: mutexDummyImpl.I
+// Created by:  drose (08Aug02)
+//
+////////////////////////////////////////////////////////////////////
+//
+// PANDA 3D SOFTWARE
+// Copyright (c) 2001 - 2004, Disney Enterprises, Inc.  All rights reserved
+//
+// All use of this software is subject to the terms of the Panda 3d
+// Software license.  You should have received a copy of this license
+// along with this source code; you will also find a current copy of
+// the license at http://etc.cmu.edu/panda3d/docs/license/ .
+//
+// To contact the maintainers of this program write to
+// panda3d-general@lists.sourceforge.net .
+//
+////////////////////////////////////////////////////////////////////
+
+
+////////////////////////////////////////////////////////////////////
+//     Function: MutexDummyImpl::Constructor
+//       Access: Public
+//  Description:
+////////////////////////////////////////////////////////////////////
+INLINE MutexDummyImpl::
+MutexDummyImpl() {
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: MutexDummyImpl::Destructor
+//       Access: Public
+//  Description:
+////////////////////////////////////////////////////////////////////
+INLINE MutexDummyImpl::
+~MutexDummyImpl() {
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: MutexDummyImpl::lock
+//       Access: Public
+//  Description: 
+////////////////////////////////////////////////////////////////////
+INLINE void MutexDummyImpl::
+lock() {
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: MutexDummyImpl::release
+//       Access: Public
+//  Description: 
+////////////////////////////////////////////////////////////////////
+INLINE void MutexDummyImpl::
+release() {
+}

dtool/src/interrogatedb/mutexDummyImpl.cxx

@@ -0,0 +1,25 @@
+// Filename: mutexDummyImpl.cxx
+// Created by:  drose (08Aug02)
+//
+////////////////////////////////////////////////////////////////////
+//
+// PANDA 3D SOFTWARE
+// Copyright (c) 2001 - 2004, Disney Enterprises, Inc.  All rights reserved
+//
+// All use of this software is subject to the terms of the Panda 3d
+// Software license.  You should have received a copy of this license
+// along with this source code; you will also find a current copy of
+// the license at http://etc.cmu.edu/panda3d/docs/license/ .
+//
+// To contact the maintainers of this program write to
+// panda3d-general@lists.sourceforge.net .
+//
+////////////////////////////////////////////////////////////////////
+
+#include "selectThreadImpl.h"
+
+#ifdef THREAD_DUMMY_IMPL
+
+#include "mutexDummyImpl.h"
+
+#endif  // THREAD_DUMMY_IMPL

dtool/src/interrogatedb/mutexDummyImpl.h

@@ -0,0 +1,48 @@
+// Filename: mutexDummyImpl.h
+// Created by:  drose (08Aug02)
+//
+////////////////////////////////////////////////////////////////////
+//
+// PANDA 3D SOFTWARE
+// Copyright (c) 2001 - 2004, Disney Enterprises, Inc.  All rights reserved
+//
+// All use of this software is subject to the terms of the Panda 3d
+// Software license.  You should have received a copy of this license
+// along with this source code; you will also find a current copy of
+// the license at http://etc.cmu.edu/panda3d/docs/license/ .
+//
+// To contact the maintainers of this program write to
+// panda3d-general@lists.sourceforge.net .
+//
+////////////////////////////////////////////////////////////////////
+
+#ifndef MUTEXDUMMYIMPL_H
+#define MUTEXDUMMYIMPL_H
+
+#include "dtoolbase.h"
+#include "selectThreadImpl.h"
+
+#ifdef THREAD_DUMMY_IMPL
+
+#include "notify.h"
+
+////////////////////////////////////////////////////////////////////
+//       Class : MutexDummyImpl
+// Description : A fake mutex implementation for single-threaded
+//               applications that don't need any synchronization
+//               control.  This does nothing at all.
+////////////////////////////////////////////////////////////////////
+class EXPCL_DTOOLCONFIG MutexDummyImpl {
+public:
+  INLINE MutexDummyImpl();
+  INLINE ~MutexDummyImpl();
+
+  INLINE void lock();
+  INLINE void release();
+};
+
+#include "mutexDummyImpl.I"
+
+#endif  // THREAD_DUMMY_IMPL
+
+#endif

dtool/src/interrogatedb/mutexImpl.h

@@ -0,0 +1,57 @@
+// Filename: mutexImpl.h
+// Created by:  drose (08Aug02)
+//
+////////////////////////////////////////////////////////////////////
+//
+// PANDA 3D SOFTWARE
+// Copyright (c) 2001 - 2004, Disney Enterprises, Inc.  All rights reserved
+//
+// All use of this software is subject to the terms of the Panda 3d
+// Software license.  You should have received a copy of this license
+// along with this source code; you will also find a current copy of
+// the license at http://etc.cmu.edu/panda3d/docs/license/ .
+//
+// To contact the maintainers of this program write to
+// panda3d-general@lists.sourceforge.net .
+//
+////////////////////////////////////////////////////////////////////
+
+#ifndef MUTEXIMPL_H
+#define MUTEXIMPL_H
+
+#include "dtoolbase.h"
+#include "selectThreadImpl.h"
+
+#if defined(THREAD_DUMMY_IMPL)
+
+#include "mutexDummyImpl.h"
+typedef MutexDummyImpl MutexImpl;
+typedef MutexDummyImpl ReMutexImpl;
+#define HAVE_REMUTEXIMPL 1
+
+#elif defined(THREAD_WIN32_IMPL)
+
+#include "mutexWin32Impl.h"
+typedef MutexWin32Impl MutexImpl;
+typedef MutexWin32Impl ReMutexImpl;  // Win32 Mutexes are always reentrant.
+#define HAVE_REMUTEXIMPL 1
+
+#elif defined(THREAD_POSIX_IMPL)
+
+#include "mutexPosixImpl.h"
+typedef MutexPosixImpl MutexImpl;
+typedef ReMutexPosixImpl ReMutexImpl;
+#define HAVE_REMUTEXIMPL 1
+
+#elif defined(THREAD_NSPR_IMPL)
+
+#include "mutexNsprImpl.h"
+typedef MutexNsprImpl MutexImpl;
+#undef HAVE_REMUTEXIMPL  // NSPR doesn't provide a reentrant mutex.
+
+#endif
+
+#endif
+
+
+

dtool/src/interrogatedb/mutexNsprImpl.I

@@ -0,0 +1,72 @@
+// Filename: mutexNsprImpl.I
+// Created by:  drose (08Aug02)
+//
+////////////////////////////////////////////////////////////////////
+//
+// PANDA 3D SOFTWARE
+// Copyright (c) 2001 - 2004, Disney Enterprises, Inc.  All rights reserved
+//
+// All use of this software is subject to the terms of the Panda 3d
+// Software license.  You should have received a copy of this license
+// along with this source code; you will also find a current copy of
+// the license at http://etc.cmu.edu/panda3d/docs/license/ .
+//
+// To contact the maintainers of this program write to
+// panda3d-general@lists.sourceforge.net .
+//
+////////////////////////////////////////////////////////////////////
+
+
+////////////////////////////////////////////////////////////////////
+//     Function: MutexNsprImpl::Constructor
+//       Access: Public
+//  Description:
+////////////////////////////////////////////////////////////////////
+INLINE MutexNsprImpl::
+MutexNsprImpl() {
+  _lock = PR_NewLock();
+  nassertv(_lock != (PRLock *)NULL);
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: MutexNsprImpl::Destructor
+//       Access: Public
+//  Description:
+////////////////////////////////////////////////////////////////////
+INLINE MutexNsprImpl::
+~MutexNsprImpl() {
+  PR_DestroyLock(_lock);
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: MutexNsprImpl::lock
+//       Access: Public
+//  Description: 
+////////////////////////////////////////////////////////////////////
+INLINE void MutexNsprImpl::
+lock() {
+  PR_Lock(_lock);
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: MutexNsprImpl::try_lock
+//       Access: Public
+//  Description: 
+////////////////////////////////////////////////////////////////////
+INLINE bool MutexNsprImpl::
+try_lock() {
+  // NSPR doesn't define a try_lock function.  Too bad.  We just
+  // report that it would always block (since we don't know).
+  return false;
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: MutexNsprImpl::release
+//       Access: Public
+//  Description: 
+////////////////////////////////////////////////////////////////////
+INLINE void MutexNsprImpl::
+release() {
+  int status = PR_Unlock(_lock);
+  nassertv(status == PR_SUCCESS);
+}

dtool/src/interrogatedb/mutexNsprImpl.cxx

@@ -0,0 +1,25 @@
+// Filename: mutexNsprImpl.cxx
+// Created by:  drose (09Aug02)
+//
+////////////////////////////////////////////////////////////////////
+//
+// PANDA 3D SOFTWARE
+// Copyright (c) 2001 - 2004, Disney Enterprises, Inc.  All rights reserved
+//
+// All use of this software is subject to the terms of the Panda 3d
+// Software license.  You should have received a copy of this license
+// along with this source code; you will also find a current copy of
+// the license at http://etc.cmu.edu/panda3d/docs/license/ .
+//
+// To contact the maintainers of this program write to
+// panda3d-general@lists.sourceforge.net .
+//
+////////////////////////////////////////////////////////////////////
+
+#include "selectThreadImpl.h"
+
+#ifdef THREAD_NSPR_IMPL
+
+#include "mutexNsprImpl.h"
+
+#endif  // THREAD_NSPR_IMPL

dtool/src/interrogatedb/mutexNsprImpl.h

@@ -0,0 +1,55 @@
+// Filename: mutexNsprImpl.h
+// Created by:  drose (08Aug02)
+//
+////////////////////////////////////////////////////////////////////
+//
+// PANDA 3D SOFTWARE
+// Copyright (c) 2001 - 2004, Disney Enterprises, Inc.  All rights reserved
+//
+// All use of this software is subject to the terms of the Panda 3d
+// Software license.  You should have received a copy of this license
+// along with this source code; you will also find a current copy of
+// the license at http://etc.cmu.edu/panda3d/docs/license/ .
+//
+// To contact the maintainers of this program write to
+// panda3d-general@lists.sourceforge.net .
+//
+////////////////////////////////////////////////////////////////////
+
+#ifndef MUTEXNSPRIMPL_H
+#define MUTEXNSPRIMPL_H
+
+#include "dtoolbase.h"
+#include "selectThreadImpl.h"
+
+#ifdef THREAD_NSPR_IMPL
+
+#include "notify.h"
+
+#include <prlock.h>
+
+#undef MUTEX_DEFINES_TRYLOCK
+
+////////////////////////////////////////////////////////////////////
+//       Class : MutexNsprImpl
+// Description : Uses NSPR to implement a mutex.
+////////////////////////////////////////////////////////////////////
+class EXPCL_DTOOLCONFIG MutexNsprImpl {
+public:
+  INLINE MutexNsprImpl();
+  INLINE ~MutexNsprImpl();
+
+  INLINE void lock();
+  INLINE bool try_lock();
+  INLINE void release();
+
+private:
+  PRLock *_lock;
+  friend class ConditionVarNsprImpl;
+};
+
+#include "mutexNsprImpl.I"
+
+#endif  // THREAD_NSPR_IMPL
+
+#endif

dtool/src/interrogatedb/mutexPosixImpl.I

@@ -0,0 +1,138 @@
+// Filename: mutexPosixImpl.I
+// Created by:  drose (10Feb06)
+//
+////////////////////////////////////////////////////////////////////
+//
+// PANDA 3D SOFTWARE
+// Copyright (c) 2001 - 2004, Disney Enterprises, Inc.  All rights reserved
+//
+// All use of this software is subject to the terms of the Panda 3d
+// Software license.  You should have received a copy of this license
+// along with this source code; you will also find a current copy of
+// the license at http://etc.cmu.edu/panda3d/docs/license/ .
+//
+// To contact the maintainers of this program write to
+// panda3d-general@lists.sourceforge.net .
+//
+////////////////////////////////////////////////////////////////////
+
+
+////////////////////////////////////////////////////////////////////
+//     Function: MutexPosixImpl::Constructor
+//       Access: Public
+//  Description:
+////////////////////////////////////////////////////////////////////
+INLINE MutexPosixImpl::
+MutexPosixImpl() {
+  pthread_mutexattr_t attr;
+  pthread_mutexattr_init(&attr);
+  pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_NORMAL);
+  int result = pthread_mutex_init(&_lock, &attr);
+  pthread_mutexattr_destroy(&attr);
+  nassertv(result == 0);
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: MutexPosixImpl::Destructor
+//       Access: Public
+//  Description:
+////////////////////////////////////////////////////////////////////
+INLINE MutexPosixImpl::
+~MutexPosixImpl() {
+  int result = pthread_mutex_destroy(&_lock);
+  nassertv(result == 0);
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: MutexPosixImpl::lock
+//       Access: Public
+//  Description: 
+////////////////////////////////////////////////////////////////////
+INLINE void MutexPosixImpl::
+lock() {
+  int result = pthread_mutex_lock(&_lock);
+  nassertv(result == 0);
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: MutexPosixImpl::try_lock
+//       Access: Public
+//  Description: 
+////////////////////////////////////////////////////////////////////
+INLINE bool MutexPosixImpl::
+try_lock() {
+  int result = pthread_mutex_trylock(&_lock);
+  nassertr(result == 0 || result == EBUSY, false);
+  return (result == 0);
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: MutexPosixImpl::release
+//       Access: Public
+//  Description: 
+////////////////////////////////////////////////////////////////////
+INLINE void MutexPosixImpl::
+release() {
+  int result = pthread_mutex_unlock(&_lock);
+  nassertv(result == 0);
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: ReMutexPosixImpl::Constructor
+//       Access: Public
+//  Description:
+////////////////////////////////////////////////////////////////////
+INLINE ReMutexPosixImpl::
+ReMutexPosixImpl() {
+  pthread_mutexattr_t attr;
+  pthread_mutexattr_init(&attr);
+  pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
+  int result = pthread_mutex_init(&_lock, &attr);
+  pthread_mutexattr_destroy(&attr);
+  nassertv(result == 0);
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: ReMutexPosixImpl::Destructor
+//       Access: Public
+//  Description:
+////////////////////////////////////////////////////////////////////
+INLINE ReMutexPosixImpl::
+~ReMutexPosixImpl() {
+  int result = pthread_mutex_destroy(&_lock);
+  nassertv(result == 0);
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: ReMutexPosixImpl::lock
+//       Access: Public
+//  Description: 
+////////////////////////////////////////////////////////////////////
+INLINE void ReMutexPosixImpl::
+lock() {
+  int result = pthread_mutex_lock(&_lock);
+  nassertv(result == 0);
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: ReMutexPosixImpl::try_lock
+//       Access: Public
+//  Description: 
+////////////////////////////////////////////////////////////////////
+INLINE bool ReMutexPosixImpl::
+try_lock() {
+  int result = pthread_mutex_trylock(&_lock);
+  nassertr(result == 0 || result == EBUSY, false);
+  return (result == 0);
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: ReMutexPosixImpl::release
+//       Access: Public
+//  Description: 
+////////////////////////////////////////////////////////////////////
+INLINE void ReMutexPosixImpl::
+release() {
+  int result = pthread_mutex_unlock(&_lock);
+  nassertv(result == 0);
+}

dtool/src/interrogatedb/mutexPosixImpl.cxx

@@ -0,0 +1,25 @@
+// Filename: mutexPosixImpl.cxx
+// Created by:  drose (10Feb06)
+//
+////////////////////////////////////////////////////////////////////
+//
+// PANDA 3D SOFTWARE
+// Copyright (c) 2001 - 2004, Disney Enterprises, Inc.  All rights reserved
+//
+// All use of this software is subject to the terms of the Panda 3d
+// Software license.  You should have received a copy of this license
+// along with this source code; you will also find a current copy of
+// the license at http://etc.cmu.edu/panda3d/docs/license/ .
+//
+// To contact the maintainers of this program write to
+// panda3d-general@lists.sourceforge.net .
+//
+////////////////////////////////////////////////////////////////////
+
+#include "selectThreadImpl.h"
+
+#ifdef THREAD_POSIX_IMPL
+
+#include "mutexPosixImpl.h"
+
+#endif  // THREAD_POSIX_IMPL

dtool/src/interrogatedb/mutexPosixImpl.h

@@ -0,0 +1,73 @@
+// Filename: mutexPosixImpl.h
+// Created by:  drose (10Feb06)
+//
+////////////////////////////////////////////////////////////////////
+//
+// PANDA 3D SOFTWARE
+// Copyright (c) 2001 - 2004, Disney Enterprises, Inc.  All rights reserved
+//
+// All use of this software is subject to the terms of the Panda 3d
+// Software license.  You should have received a copy of this license
+// along with this source code; you will also find a current copy of
+// the license at http://etc.cmu.edu/panda3d/docs/license/ .
+//
+// To contact the maintainers of this program write to
+// panda3d-general@lists.sourceforge.net .
+//
+////////////////////////////////////////////////////////////////////
+
+#ifndef MUTEXPOSIXIMPL_H
+#define MUTEXPOSIXIMPL_H
+
+#include "dtoolbase.h"
+#include "selectThreadImpl.h"
+
+#ifdef THREAD_POSIX_IMPL
+
+#include "notify.h"
+
+#include <pthread.h>
+#include <errno.h>
+
+#define MUTEX_DEFINES_TRYLOCK 1
+
+////////////////////////////////////////////////////////////////////
+//       Class : MutexPosixImpl
+// Description : Uses Posix threads to implement a mutex.
+////////////////////////////////////////////////////////////////////
+class EXPCL_DTOOLCONFIG MutexPosixImpl {
+public:
+  INLINE MutexPosixImpl();
+  INLINE ~MutexPosixImpl();
+
+  INLINE void lock();
+  INLINE bool try_lock();
+  INLINE void release();
+
+private:
+  pthread_mutex_t _lock;
+  friend class ConditionVarPosixImpl;
+};
+
+////////////////////////////////////////////////////////////////////
+//       Class : ReMutexPosixImpl
+// Description : Uses Posix threads to implement a reentrant mutex.
+////////////////////////////////////////////////////////////////////
+class EXPCL_DTOOLCONFIG ReMutexPosixImpl {
+public:
+  INLINE ReMutexPosixImpl();
+  INLINE ~ReMutexPosixImpl();
+
+  INLINE void lock();
+  INLINE bool try_lock();
+  INLINE void release();
+
+private:
+  pthread_mutex_t _lock;
+};
+
+#include "mutexPosixImpl.I"
+
+#endif  // THREAD_POSIX_IMPL
+
+#endif

dtool/src/interrogatedb/mutexWin32Impl.I

@@ -0,0 +1,68 @@
+// Filename: mutexWin32Impl.I
+// Created by:  drose (07Feb06)
+//
+////////////////////////////////////////////////////////////////////
+//
+// PANDA 3D SOFTWARE
+// Copyright (c) 2001 - 2004, Disney Enterprises, Inc.  All rights reserved
+//
+// All use of this software is subject to the terms of the Panda 3d
+// Software license.  You should have received a copy of this license
+// along with this source code; you will also find a current copy of
+// the license at http://etc.cmu.edu/panda3d/docs/license/ .
+//
+// To contact the maintainers of this program write to
+// panda3d-general@lists.sourceforge.net .
+//
+////////////////////////////////////////////////////////////////////
+
+
+////////////////////////////////////////////////////////////////////
+//     Function: MutexWin32Impl::Constructor
+//       Access: Public
+//  Description:
+////////////////////////////////////////////////////////////////////
+INLINE MutexWin32Impl::
+MutexWin32Impl() {
+  InitializeCriticalSection(&_lock);
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: MutexWin32Impl::Destructor
+//       Access: Public
+//  Description:
+////////////////////////////////////////////////////////////////////
+INLINE MutexWin32Impl::
+~MutexWin32Impl() {
+  DeleteCriticalSection(&_lock);
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: MutexWin32Impl::lock
+//       Access: Public
+//  Description: 
+////////////////////////////////////////////////////////////////////
+INLINE void MutexWin32Impl::
+lock() {
+  EnterCriticalSection(&_lock);
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: MutexWin32Impl::try_lock
+//       Access: Public
+//  Description: 
+////////////////////////////////////////////////////////////////////
+INLINE bool MutexWin32Impl::
+try_lock() {
+  return (TryEnterCriticalSection(&_lock) != 0);
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: MutexWin32Impl::release
+//       Access: Public
+//  Description: 
+////////////////////////////////////////////////////////////////////
+INLINE void MutexWin32Impl::
+release() {
+  LeaveCriticalSection(&_lock);
+}

dtool/src/interrogatedb/mutexWin32Impl.cxx

@@ -0,0 +1,25 @@
+// Filename: mutexWin32Impl.cxx
+// Created by:  drose (07Feb06)
+//
+////////////////////////////////////////////////////////////////////
+//
+// PANDA 3D SOFTWARE
+// Copyright (c) 2001 - 2004, Disney Enterprises, Inc.  All rights reserved
+//
+// All use of this software is subject to the terms of the Panda 3d
+// Software license.  You should have received a copy of this license
+// along with this source code; you will also find a current copy of
+// the license at http://etc.cmu.edu/panda3d/docs/license/ .
+//
+// To contact the maintainers of this program write to
+// panda3d-general@lists.sourceforge.net .
+//
+////////////////////////////////////////////////////////////////////
+
+#include "selectThreadImpl.h"
+
+#ifdef THREAD_WIN32_IMPL
+
+#include "mutexWin32Impl.h"
+
+#endif  // THREAD_WIN32_IMPL

dtool/src/interrogatedb/mutexWin32Impl.h

@@ -0,0 +1,55 @@
+// Filename: mutexWin32Impl.h
+// Created by:  drose (07Feb06)
+//
+////////////////////////////////////////////////////////////////////
+//
+// PANDA 3D SOFTWARE
+// Copyright (c) 2001 - 2004, Disney Enterprises, Inc.  All rights reserved
+//
+// All use of this software is subject to the terms of the Panda 3d
+// Software license.  You should have received a copy of this license
+// along with this source code; you will also find a current copy of
+// the license at http://etc.cmu.edu/panda3d/docs/license/ .
+//
+// To contact the maintainers of this program write to
+// panda3d-general@lists.sourceforge.net .
+//
+////////////////////////////////////////////////////////////////////
+
+#ifndef MUTEXWIN32IMPL_H
+#define MUTEXWIN32IMPL_H
+
+#include "dtoolbase.h"
+#include "selectThreadImpl.h"
+
+#ifdef THREAD_WIN32_IMPL
+
+#include "notify.h"
+
+#include <windows.h>
+
+#define MUTEX_DEFINES_TRYLOCK 1
+
+////////////////////////////////////////////////////////////////////
+//       Class : MutexWin32Impl
+// Description : Uses Windows native calls to implement a mutex.
+////////////////////////////////////////////////////////////////////
+class EXPCL_DTOOLCONFIG MutexWin32Impl {
+public:
+  INLINE MutexWin32Impl();
+  INLINE ~MutexWin32Impl();
+
+  INLINE void lock();
+  INLINE bool try_lock();
+  INLINE void release();
+
+private:
+  CRITICAL_SECTION _lock;
+  friend class ConditionVarWin32Impl;
+};
+
+#include "mutexWin32Impl.I"
+
+#endif  // THREAD_WIN32_IMPL
+
+#endif

dtool/src/interrogatedb/py_panda.cxx

@@ -17,6 +17,7 @@
 ////////////////////////////////////////////////////////////////////
 
 #include "py_panda.h"
+#include "config_interrogatedb.h"
 
 #ifdef HAVE_PYTHON
 

dtool/src/interrogatedb/selectThreadImpl.h

@@ -0,0 +1,71 @@
+// Filename: selectThreadImpl.h
+// Created by:  drose (09Aug02)
+//
+////////////////////////////////////////////////////////////////////
+//
+// PANDA 3D SOFTWARE
+// Copyright (c) 2001 - 2004, Disney Enterprises, Inc.  All rights reserved
+//
+// All use of this software is subject to the terms of the Panda 3d
+// Software license.  You should have received a copy of this license
+// along with this source code; you will also find a current copy of
+// the license at http://etc.cmu.edu/panda3d/docs/license/ .
+//
+// To contact the maintainers of this program write to
+// panda3d-general@lists.sourceforge.net .
+//
+////////////////////////////////////////////////////////////////////
+
+#ifndef SELECTTHREADIMPL_H
+#define SELECTTHREADIMPL_H
+
+#include "dtoolbase.h"
+
+////////////////////////////////////////////////////////////////////
+// This file decides which of the core implementations of the various
+// threading and locking implementations we should use, based on
+// platform and/or available libraries.
+//
+// This file, along with mutexImpl.h and the various Mutex
+// implementation classes, are defined in dtool so that some form of
+// critical-section protection will be available to view low-level
+// classes like TypeRegistry.  Most of the rest of the threading and
+// synchronization classes are defined in panda/src/express.
+////////////////////////////////////////////////////////////////////
+
+#if !defined(HAVE_THREADS)
+
+// With threading disabled, use the do-nothing implementation.
+#define THREAD_DUMMY_IMPL 1
+
+#elif defined(WIN32_VC)
+
+// In Windows, use the native threading library.
+#define THREAD_WIN32_IMPL 1
+
+#elif defined(HAVE_POSIX_THREADS)
+
+// Posix threads are nice.
+#define THREAD_POSIX_IMPL 1
+
+#elif defined(HAVE_NSPR)
+
+// If NSPR is available, use that.
+#define THREAD_NSPR_IMPL 1
+
+#else
+
+// This is a configuration error.  For some reason, HAVE_THREADS is
+// defined but we don't have any way to implement it.
+#error No thread implementation defined for platform.
+
+#endif
+
+// Let's also factor out some of the other configuration variables.
+#if defined(DO_PIPELINING) && defined(HAVE_THREADS)
+#define THREADED_PIPELINE 1
+#else
+#undef THREADED_PIPELINE
+#endif
+
+#endif

dtool/src/interrogatedb/typeRegistry.cxx

@@ -31,6 +31,7 @@
 // static init time, and we must use the arrow syntax to force
 // initialization of the interrogatedb_cat category.
 
+MutexImpl TypeRegistry::_lock;
 TypeRegistry *TypeRegistry::_global_pointer = NULL;
 
 
@@ -47,12 +48,15 @@ TypeRegistry *TypeRegistry::_global_pointer = NULL;
 ////////////////////////////////////////////////////////////////////
 bool TypeRegistry::
 register_type(TypeHandle &type_handle, const string &name) {
+  _lock.lock();
+
   if (type_handle != TypeHandle::none()) {
     // Here's a type that was already registered.  Just make sure
     // everything's still kosher.
     TypeRegistryNode *rnode = look_up(type_handle, NULL);
     if (&type_handle == &rnode->_ref) {
       // No problem.
+      _lock.release();
       nassertr(rnode->_name == name, false);
       return false;
     }
@@ -82,6 +86,7 @@ register_type(TypeHandle &type_handle, const string &name) {
     _derivations_fresh = false;
 
     type_handle = new_handle;
+    _lock.release();
     return true;
   }
   TypeRegistryNode *rnode = (*ri).second;
@@ -97,6 +102,7 @@ register_type(TypeHandle &type_handle, const string &name) {
 
     if (type_handle == rnode->_handle) {
       // No problem.
+      _lock.release();
       return false;
     }
     // But wait--the type_handle has changed!  We kept a reference to
@@ -107,6 +113,7 @@ register_type(TypeHandle &type_handle, const string &name) {
     interrogatedb_cat->error()
       << "Reregistering " << name << "\n";
     type_handle == rnode->_handle;
+    _lock.release();
     return false;
   }
 
@@ -122,6 +129,7 @@ register_type(TypeHandle &type_handle, const string &name) {
 
     type_handle = rnode->_handle;
   }
+  _lock.release();
   return false;
 }
 
@@ -136,6 +144,8 @@ register_type(TypeHandle &type_handle, const string &name) {
 ////////////////////////////////////////////////////////////////////
 TypeHandle TypeRegistry::
 register_dynamic_type(const string &name) {
+  _lock.lock();
+
   NameRegistry::iterator ri;
   ri = _name_registry.find(name);
 
@@ -162,12 +172,15 @@ register_dynamic_type(const string &name) {
     _name_registry[name] = rnode;
     _derivations_fresh = false;
 
+    _lock.release();
     return *new_handle;
   }
 
   // Return the TypeHandle previously obtained.
   TypeRegistryNode *rnode = (*ri).second;
-  return rnode->_handle;
+  TypeHandle handle = rnode->_handle;
+  _lock.release();
+  return handle;
 }
 
 ////////////////////////////////////////////////////////////////////
@@ -180,6 +193,8 @@ register_dynamic_type(const string &name) {
 ////////////////////////////////////////////////////////////////////
 void TypeRegistry::
 record_derivation(TypeHandle child, TypeHandle parent) {
+  _lock.lock();
+
   TypeRegistryNode *cnode = look_up(child, NULL);
   nassertv(cnode != (TypeRegistryNode *)NULL);
   TypeRegistryNode *pnode = look_up(parent, NULL);
@@ -196,6 +211,8 @@ record_derivation(TypeHandle child, TypeHandle parent) {
     pnode->_child_classes.push_back(cnode);
     _derivations_fresh = false;
   }
+
+  _lock.release();
 }
 
 ////////////////////////////////////////////////////////////////////
@@ -209,6 +226,8 @@ record_derivation(TypeHandle child, TypeHandle parent) {
 ////////////////////////////////////////////////////////////////////
 void TypeRegistry::
 record_alternate_name(TypeHandle type, const string &name) {
+  _lock.lock();
+
   TypeRegistryNode *rnode = look_up(type, (TypedObject *)NULL);
   if (rnode != (TypeRegistryNode *)NULL) {
     NameRegistry::iterator ri =
@@ -219,6 +238,8 @@ record_alternate_name(TypeHandle type, const string &name) {
         << rnode->_name << "; cannot reassign to " << type << "\n";
     }
   }
+
+  _lock.release();
 }
 
 ////////////////////////////////////////////////////////////////////
@@ -230,13 +251,17 @@ record_alternate_name(TypeHandle type, const string &name) {
 ////////////////////////////////////////////////////////////////////
 TypeHandle TypeRegistry::
 find_type(const string &name) const {
+  _lock.lock();
+
+  TypeHandle handle;
   NameRegistry::const_iterator ri;
   ri = _name_registry.find(name);
-  if (ri == _name_registry.end()) {
+  if (ri != _name_registry.end()) {
-    return TypeHandle::none();
+    handle = (*ri).second->_handle;
-  } else {
-    return (*ri).second->_handle;
   }
+  _lock.release();
+
+  return handle;
 }
 
 
@@ -252,9 +277,13 @@ find_type(const string &name) const {
 ////////////////////////////////////////////////////////////////////
 string TypeRegistry::
 get_name(TypeHandle type, TypedObject *object) const {
+  _lock.lock();
   TypeRegistryNode *rnode = look_up(type, object);
   nassertr(rnode != (TypeRegistryNode *)NULL, "");
-  return rnode->_name;
+  string name = rnode->_name;
+  _lock.release();
+
+  return name;
 }
 
 ////////////////////////////////////////////////////////////////////
@@ -278,12 +307,17 @@ get_name(TypeHandle type, TypedObject *object) const {
 bool TypeRegistry::
 is_derived_from(TypeHandle child, TypeHandle base,
                 TypedObject *child_object) {
+  _lock.lock();
+
   const TypeRegistryNode *child_node = look_up(child, child_object);
   const TypeRegistryNode *base_node = look_up(base, (TypedObject *)NULL);
   nassertr(child_node != (TypeRegistryNode *)NULL &&
            base_node != (TypeRegistryNode *)NULL, false);
   freshen_derivations();
-  return TypeRegistryNode::is_derived_from(child_node, base_node);
+
+  bool result = TypeRegistryNode::is_derived_from(child_node, base_node);
+  _lock.release();
+  return result;
 }
 
 ////////////////////////////////////////////////////////////////////
@@ -295,8 +329,11 @@ is_derived_from(TypeHandle child, TypeHandle base,
 ////////////////////////////////////////////////////////////////////
 int TypeRegistry::
 get_num_root_classes() {
+  _lock.lock();
   freshen_derivations();
-  return _root_classes.size();
+  int num_roots = _root_classes.size();
+  _lock.release();
+  return num_roots;
 }
 
 ////////////////////////////////////////////////////////////////////
@@ -307,9 +344,15 @@ get_num_root_classes() {
 ////////////////////////////////////////////////////////////////////
 TypeHandle TypeRegistry::
 get_root_class(int n) {
+  _lock.lock();
   freshen_derivations();
-  nassertr(n >= 0 && n < get_num_root_classes(), TypeHandle::none());
+  TypeHandle handle;
-  return _root_classes[n]->_handle;
+  if (n >= 0 && n < get_num_root_classes()) {
+    handle = _root_classes[n]->_handle;
+  }
+  _lock.release();
+
+  return handle;
 }
 
 ////////////////////////////////////////////////////////////////////
@@ -330,9 +373,12 @@ get_root_class(int n) {
 ////////////////////////////////////////////////////////////////////
 int TypeRegistry::
 get_num_parent_classes(TypeHandle child, TypedObject *child_object) const {
+  _lock.lock();
   TypeRegistryNode *rnode = look_up(child, child_object);
   nassertr(rnode != (TypeRegistryNode *)NULL, 0);
-  return rnode->_parent_classes.size();
+  int num_parents = rnode->_parent_classes.size();
+  _lock.release();
+  return num_parents;
 }
 
 ////////////////////////////////////////////////////////////////////
@@ -344,11 +390,15 @@ get_num_parent_classes(TypeHandle child, TypedObject *child_object) const {
 ////////////////////////////////////////////////////////////////////
 TypeHandle TypeRegistry::
 get_parent_class(TypeHandle child, int index) const {
+  _lock.lock();
+  TypeHandle handle;
   TypeRegistryNode *rnode = look_up(child, (TypedObject *)NULL);
   nassertr(rnode != (TypeRegistryNode *)NULL, TypeHandle::none());
-  nassertr(index >= 0 && index < (int)rnode->_parent_classes.size(),
+  if (index >= 0 && index < (int)rnode->_parent_classes.size()) {
-           TypeHandle::none());
+    handle = rnode->_parent_classes[index]->_handle;
-  return rnode->_parent_classes[index]->_handle;
+  }
+  _lock.release();
+  return handle;
 }
 
 ////////////////////////////////////////////////////////////////////
@@ -365,9 +415,12 @@ get_parent_class(TypeHandle child, int index) const {
 ////////////////////////////////////////////////////////////////////
 int TypeRegistry::
 get_num_child_classes(TypeHandle child, TypedObject *child_object) const {
+  _lock.lock();
   TypeRegistryNode *rnode = look_up(child, child_object);
   nassertr(rnode != (TypeRegistryNode *)NULL, 0);
-  return rnode->_child_classes.size();
+  int num_children = rnode->_child_classes.size();
+  _lock.release();
+  return num_children;
 }
 
 ////////////////////////////////////////////////////////////////////
@@ -379,11 +432,15 @@ get_num_child_classes(TypeHandle child, TypedObject *child_object) const {
 ////////////////////////////////////////////////////////////////////
 TypeHandle TypeRegistry::
 get_child_class(TypeHandle child, int index) const {
+  _lock.lock();
+  TypeHandle handle;
   TypeRegistryNode *rnode = look_up(child, (TypedObject *)NULL);
   nassertr(rnode != (TypeRegistryNode *)NULL, TypeHandle::none());
-  nassertr(index >= 0 && index < (int)rnode->_child_classes.size(),
+  if (index >= 0 && index < (int)rnode->_child_classes.size()) {
-           TypeHandle::none());
+    handle = rnode->_child_classes[index]->_handle;
-  return rnode->_child_classes[index]->_handle;
+  }
+  _lock.release();
+  return handle;
 }
 
 ////////////////////////////////////////////////////////////////////
@@ -403,12 +460,16 @@ get_child_class(TypeHandle child, int index) const {
 TypeHandle TypeRegistry::
 get_parent_towards(TypeHandle child, TypeHandle base,
                    TypedObject *child_object) {
+  _lock.lock();
+  TypeHandle handle;
   const TypeRegistryNode *child_node = look_up(child, child_object);
   const TypeRegistryNode *base_node = look_up(base, NULL);
   nassertr(child_node != (TypeRegistryNode *)NULL && 
            base_node != (TypeRegistryNode *)NULL, TypeHandle::none());
   freshen_derivations();
-  return TypeRegistryNode::get_parent_towards(child_node, base_node);
+  handle = TypeRegistryNode::get_parent_towards(child_node, base_node);
+  _lock.release();
+  return handle;
 }
 
 
@@ -425,6 +486,7 @@ get_parent_towards(TypeHandle child, TypeHandle base,
 ////////////////////////////////////////////////////////////////////
 void TypeRegistry::
 reregister_types() {
+  _lock.lock();
   HandleRegistry::iterator ri;
   TypeRegistry *reg = ptr();
   for (ri = reg->_handle_registry.begin();
@@ -436,6 +498,7 @@ reregister_types() {
         << "Reregistering " << rnode->_name << "\n";
     }
   }
+  _lock.release();
 }
 
 
@@ -448,6 +511,7 @@ reregister_types() {
 ////////////////////////////////////////////////////////////////////
 void TypeRegistry::
 write(ostream &out) const {
+  _lock.lock();
   // Recursively write out the tree, starting from each node that has
   // no parent.
   HandleRegistry::const_iterator hi;
@@ -459,6 +523,7 @@ write(ostream &out) const {
       write_node(out, 2, root);
     }
   }
+  _lock.release();
 }
 
 ////////////////////////////////////////////////////////////////////
@@ -469,6 +534,7 @@ write(ostream &out) const {
 ////////////////////////////////////////////////////////////////////
 TypeRegistry *TypeRegistry::
 ptr() {
+  _lock.lock();
   if (_global_pointer == NULL) {
 #ifdef NOTIFY_DEBUG
     if (interrogatedb_cat->is_spam()) {
@@ -478,6 +544,7 @@ ptr() {
 #endif
     init_global_pointer();
   }
+  _lock.release();
   return _global_pointer;
 }
 
@@ -500,9 +567,7 @@ TypeRegistry() {
 //     Function: TypeRegistry::init_global_pointer
 //       Access: Private, Static
 //  Description: Constructs the TypeRegistry object for the first
-//               time.  It is initially created on the local heap,
+//               time.
-//               then as soon as shared memory becomes available, it
-//               should be moved into shared memory.
 ////////////////////////////////////////////////////////////////////
 void TypeRegistry::
 init_global_pointer() {

dtool/src/interrogatedb/typeRegistry.h

@@ -20,7 +20,7 @@
 #define TYPEREGISTRY_H
 
 #include "dtoolbase.h"
-
+#include "mutexImpl.h"
 #include "notify.h"
 #include "pvector.h"
 #include "pmap.h"
@@ -106,6 +106,7 @@ private:
 
   bool _derivations_fresh;
 
+  static MutexImpl _lock;
   static TypeRegistry *_global_pointer;
 };