52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
/* Filename: contextSwitch.c
|
|
* Created by: drose (21Jun07)
|
|
*
|
|
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
|
|
*
|
|
* 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."
|
|
*
|
|
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
|
|
|
|
#include "contextSwitch.h"
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
|
|
#if defined(THREAD_SIMPLE_IMPL) && !defined(CPPPARSER)
|
|
|
|
/* With OS_SIMPLE_THREADS, we will try to implement context-switching
|
|
using OS-provided threading constructs. This is via either Windows
|
|
or Posix threads. */
|
|
|
|
#if defined(_WIN32) && defined(OS_SIMPLE_THREADS)
|
|
|
|
#include "contextSwitch_windows_src.c"
|
|
|
|
#elif defined(HAVE_POSIX_THREADS) && defined(OS_SIMPLE_THREADS)
|
|
|
|
#include "contextSwitch_posix_src.c"
|
|
|
|
#elif defined(PHAVE_UCONTEXT_H)
|
|
|
|
/* Without OS_SIMPLE_THREADS, or without Windows or Posix threads
|
|
libraries available, we have to implement context-switching
|
|
entirely in user space. First choice: the ucontext.h interface. */
|
|
|
|
#include "contextSwitch_ucontext_src.c"
|
|
|
|
#else
|
|
|
|
/* Second choice: old fashioned setjmp/longjmp, with some a priori
|
|
hacks to make it switch stacks. */
|
|
|
|
#include "contextSwitch_longjmp_src.c"
|
|
|
|
#endif /* PHAVE_UCONTEXT_H */
|
|
|
|
#endif /* THREAD_SIMPLE_IMPL */
|