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/* perthread.h: Header file for cygwin synchronization primitives.
Copyright 2000 Cygnus Solutions.
Written by Christopher Faylor <cgf@cygnus.com>
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#define PTMAGIC 0x77366377
struct _reent;
extern struct _reent reent_data;
extern DWORD *__stackbase __asm__ ("%fs:4");
extern __inline struct _reent *
get_reent ()
{
DWORD *base = __stackbase - 1;
if (*base != PTMAGIC)
return &reent_data;
return (struct _reent *) base[-1];
}
extern inline void
set_reent (struct _reent *r)
{
DWORD *base = __stackbase - 1;
*base = PTMAGIC;
base[-1] = (DWORD) r;
}
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