Panda3D
|
00001 /* Filename: contextSwitch.c 00002 * Created by: drose (21Jun07) 00003 * 00004 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 00005 * 00006 * PANDA 3D SOFTWARE 00007 * Copyright (c) Carnegie Mellon University. All rights reserved. 00008 * 00009 * All use of this software is subject to the terms of the revised BSD 00010 * license. You should have received a copy of this license along 00011 * with this source code in a file named "LICENSE." 00012 * 00013 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ 00014 00015 #include "contextSwitch.h" 00016 00017 #include <stdlib.h> 00018 #include <stdio.h> 00019 00020 #if defined(THREAD_SIMPLE_IMPL) && !defined(CPPPARSER) 00021 00022 /* With OS_SIMPLE_THREADS, we will try to implement context-switching 00023 using OS-provided threading constructs. This is via either Windows 00024 or Posix threads. */ 00025 00026 #if defined(WIN32) && defined(OS_SIMPLE_THREADS) 00027 00028 #include "contextSwitch_windows_src.c" 00029 00030 #elif defined(HAVE_POSIX_THREADS) && defined(OS_SIMPLE_THREADS) 00031 00032 #include "contextSwitch_posix_src.c" 00033 00034 #elif defined(PHAVE_UCONTEXT_H) 00035 00036 /* Without OS_SIMPLE_THREADS, or without Windows or Posix threads 00037 libraries available, we have to implement context-switching 00038 entirely in user space. First choice: the ucontext.h interface. */ 00039 00040 #include "contextSwitch_ucontext_src.c" 00041 00042 #else 00043 00044 /* Second choice: old fashioned setjmp/longjmp, with some a priori 00045 hacks to make it switch stacks. */ 00046 00047 #include "contextSwitch_longjmp_src.c" 00048 00049 #endif /* PHAVE_UCONTEXT_H */ 00050 00051 #endif /* THREAD_SIMPLE_IMPL */