Enforce PEP 11 - remove support for legacy systems

Python/thread.c

 
 /* Thread package.
    This is intended to be usable independently from Python.
    The implementation for system foobar is in a file thread_foobar.h
    which is included by this file dependent on config settings.
    Stuff shared by all thread_*.h files is collected here. */
 
 #include "Python.h"
 
 
 #ifndef _POSIX_THREADS
 /* This means pthreads are not implemented in libc headers, hence the macro
    not present in unistd.h. But they still can be implemented as an external
    library (e.g. gnu pth in pthread emulation) */
 # ifdef HAVE_PTHREAD_H
 #  include <pthread.h> /* _POSIX_THREADS */
 # endif
 #endif
 
 #ifndef DONT_HAVE_STDIO_H
 #include <stdio.h>
 #endif
 
 #include <stdlib.h>
 
 #include "pythread.h"
 
 #ifndef _POSIX_THREADS
-
-#ifdef __sgi
-#define SGI_THREADS
-#endif
-
-#ifdef HAVE_THREAD_H
-#define SOLARIS_THREADS
-#endif
-
-#if defined(sun) && !defined(SOLARIS_THREADS)
-#define SUN_LWP
-#endif
 
 /* Check if we're running on HP-UX and _SC_THREADS is defined. If so, then
    enough of the Posix threads package is implemented to support python
    threads.
 
    This is valid for HP-UX 11.23 running on an ia64 system. If needed, add
    a check of __ia64 to verify that we're running on a ia64 system instead
    of a pa-risc system.
 */
 #ifdef __hpux
@@ skipping 35 matching lines @@
         return;
     initialized = 1;
     dprintf(("PyThread_init_thread called\n"));
     PyThread__init_thread();
 }
 
 /* Support for runtime thread stack size tuning.
    A value of 0 means using the platform's default stack size
    or the size specified by the THREAD_STACK_SIZE macro. */
 static size_t _pythread_stacksize = 0;
-
-#ifdef SGI_THREADS
-#error SGI Irix threads are now unsupported, and code will be removed in 3.3.
-#include "thread_sgi.h"
-#endif
-
-#ifdef SOLARIS_THREADS
-#include "thread_solaris.h"
-#endif
-
-#ifdef SUN_LWP
-#error SunOS lightweight processes are now unsupported, and code will be removed in 3.3.
-#include "thread_lwp.h"
-#endif
-
-#ifdef HAVE_PTH
-#error GNU pth threads are now unsupported, and code will be removed in 3.3.
-#include "thread_pth.h"
-#undef _POSIX_THREADS
-#endif
 
 #ifdef _POSIX_THREADS
 #include "thread_pthread.h"
 #endif
 
-#ifdef C_THREADS
-#error Mach C Threads are now unsupported, and code will be removed in 3.3.
-#include "thread_cthread.h"
-#endif
-
 #ifdef NT_THREADS
 #include "thread_nt.h"
 #endif
 
 #ifdef OS2_THREADS
 #include "thread_os2.h"
-#endif
-
-#ifdef PLAN9_THREADS
-#include "thread_plan9.h"
 #endif
 
 /*
 #ifdef FOOBAR_THREADS
 #include "thread_foobar.h"
 #endif
 */
 
 /* return the current thread stack size */
 size_t
@@ skipping 256 matching lines @@
             *q = p->next;
             free((void *)p);
             /* NB This does *not* free p->value! */
         }
         else
             q = &p->next;
     }
 }
 
 #endif /* Py_HAVE_NATIVE_TLS */