/**
 * PANDA 3D SOFTWARE
 * Copyright (c) Carnegie Mellon University.  All rights reserved.
 *
 * All use of this software is subject to the terms of the revised BSD
 * license.  You should have received a copy of this license along
 * with this source code in a file named "LICENSE."
 *
 * @file dtoolbase.cxx
 * @author drose
 * @date 2000-09-12
 */

#include "dtoolbase.h"
#include "memoryHook.h"

#if !defined(CPPPARSER) && !defined(LINK_ALL_STATIC) && !defined(BUILDING_DTOOL_DTOOLBASE)
  #error Buildsystem error: BUILDING_DTOOL_DTOOLBASE not defined
#endif

#if defined(USE_TAU) && defined(WIN32)
// Hack around tau's lack of DLL export declarations for Profiler class.
bool __tau_shutdown = false;
#endif

MemoryHook *memory_hook;

/**
 * Any code that might need to use PANDA_MALLOC or PANDA_FREE, or any methods
 * of the global memory_hook object, at static init time, should ensure that
 * it calls init_memory_hook() first to ensure that the pointer has been
 * properly initialized.  There is no harm in calling this function more than
 * once.
 *
 * There is no need to call this function other than at static init time.
 */
void
init_memory_hook() {
  if (memory_hook == nullptr) {
    memory_hook = new MemoryHook;
  }
}

// Here's a quick way to ensure the above function is called at least once at
// static init time.
class InitMemoryHook {
public:
  InitMemoryHook() {
    init_memory_hook();
  }
};
static InitMemoryHook _imh_object;

#if defined(HAVE_THREADS) && defined(SIMPLE_THREADS)

static void
default_thread_yield() {
}
static void
default_thread_consider_yield() {
}
void (*global_thread_yield)() = default_thread_yield;
void (*global_thread_consider_yield)() = default_thread_consider_yield;

#ifdef HAVE_PYTHON
static PyThreadState *
default_thread_state_swap(PyThreadState *state) {
  return nullptr;
}
PyThreadState *(*global_thread_state_swap)(PyThreadState *tstate) = default_thread_state_swap;
#endif  // HAVE_PYTHON

#endif  // HAVE_THREADS && SIMPLE_THREADS