Split thread.c into a number of system-specific files.
Added Tim Peters' pthread version.
diff --git a/Python/thread_cthread.h b/Python/thread_cthread.h
new file mode 100644
index 0000000..7710bdf
--- /dev/null
+++ b/Python/thread_cthread.h
@@ -0,0 +1,158 @@
+/***********************************************************
+Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum,
+Amsterdam, The Netherlands.
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the names of Stichting Mathematisch
+Centrum or CWI not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior permission.
+
+STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
+THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
+FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+******************************************************************/
+
+#include <cthreads.h>
+
+
+/*
+ * Initialization.
+ */
+static void _init_thread _P0()
+{
+ cthread_init();
+}
+
+/*
+ * Thread support.
+ */
+int start_new_thread _P2(func, void (*func) _P((void *)), arg, void *arg)
+{
+#if defined(SGI_THREADS) && defined(USE_DL)
+ long addr, size;
+ static int local_initialized = 0;
+#endif /* SGI_THREADS and USE_DL */
+ int success = 0; /* init not needed when SOLARIS_THREADS and */
+ /* C_THREADS implemented properly */
+
+ dprintf(("start_new_thread called\n"));
+ if (!initialized)
+ init_thread();
+ (void) cthread_fork(func, arg);
+ return success < 0 ? 0 : 1;
+}
+
+static void do_exit_thread _P1(no_cleanup, int no_cleanup)
+{
+ dprintf(("exit_thread called\n"));
+ if (!initialized)
+ if (no_cleanup)
+ _exit(0);
+ else
+ exit(0);
+ cthread_exit(0);
+}
+
+void exit_thread _P0()
+{
+ do_exit_thread(0);
+}
+
+void _exit_thread _P0()
+{
+ do_exit_thread(1);
+}
+
+#ifndef NO_EXIT_PROG
+static void do_exit_prog _P2(status, int status, no_cleanup, int no_cleanup)
+{
+ dprintf(("exit_prog(%d) called\n", status));
+ if (!initialized)
+ if (no_cleanup)
+ _exit(status);
+ else
+ exit(status);
+}
+
+void exit_prog _P1(status, int status)
+{
+ do_exit_prog(status, 0);
+}
+
+void _exit_prog _P1(status, int status)
+{
+ do_exit_prog(status, 1);
+}
+#endif /* NO_EXIT_PROG */
+
+/*
+ * Lock support.
+ */
+type_lock allocate_lock _P0()
+{
+
+ dprintf(("allocate_lock called\n"));
+ if (!initialized)
+ init_thread();
+
+ dprintf(("allocate_lock() -> %lx\n", (long)lock));
+ return (type_lock) lock;
+}
+
+void free_lock _P1(lock, type_lock lock)
+{
+ dprintf(("free_lock(%lx) called\n", (long)lock));
+}
+
+int acquire_lock _P2(lock, type_lock lock, waitflag, int waitflag)
+{
+ int success;
+
+ dprintf(("acquire_lock(%lx, %d) called\n", (long)lock, waitflag));
+ dprintf(("acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success));
+ return success;
+}
+
+void release_lock _P1(lock, type_lock lock)
+{
+ dprintf(("release_lock(%lx) called\n", (long)lock));
+}
+
+/*
+ * Semaphore support.
+ */
+type_sema allocate_sema _P1(value, int value)
+{
+ dprintf(("allocate_sema called\n"));
+ if (!initialized)
+ init_thread();
+
+ dprintf(("allocate_sema() -> %lx\n", (long) sema));
+ return (type_sema) sema;
+}
+
+void free_sema _P1(sema, type_sema sema)
+{
+ dprintf(("free_sema(%lx) called\n", (long) sema));
+}
+
+void down_sema _P1(sema, type_sema sema)
+{
+ dprintf(("down_sema(%lx) called\n", (long) sema));
+ dprintf(("down_sema(%lx) return\n", (long) sema));
+}
+
+void up_sema _P1(sema, type_sema sema)
+{
+ dprintf(("up_sema(%lx)\n", (long) sema));
+}