/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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*
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* The Original Code is the Netscape Portable Runtime (NSPR).
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* Portions created by the Initial Developer are Copyright (C) 1998-2000
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/*
* 5/18/96 Taken from nec.h -- chrisk@netscape.com
* 3/14/97 Modified for nspr20 -- chrisk@netscape.com
*/
#ifndef nspr_reliantunix_defs_h___
#define nspr_reliantunix_defs_h___
/*
* Internal configuration macros
*/
#define HAVE_DLL
#define USE_DLFCN
#define NEED_STRFTIME_LOCK
#define NEED_TIME_R
#define HAVE_NETCONFIG
#define HAVE_WEAK_IO_SYMBOLS
#define HAVE_WEAK_MALLOC_SYMBOLS
#define _PR_POLL_AVAILABLE
#define _PR_USE_POLL
#define _PR_STAT_HAS_ST_ATIM
#define _PR_NO_LARGE_FILES
/*
* Mike Patnode indicated that it is possibly safe now to use context-switching
* calls that do not change the signal mask, like setjmp vs. sigsetjmp.
* So we'll use our homegrown, getcontext/setcontext-compatible stuff which
* will save us the getcontext/setcontext system calls at each context switch.
* It already works in FastTrack 2.01, so it should do it here :-)
* - chrisk 040497
*/
#include <ucontext.h>
#ifdef USE_SETCXT
/* use non-syscall machine language replacement */
/* defined in os_ReliantUNIX.s */
extern int getcxt(ucontext_t *);
extern int setcxt(ucontext_t *);
#else
#endif
#define _PR_IS_NATIVE_THREAD_SUPPORTED() 0
/*
** Machine-dependent (MD) data structures.
*/
struct _MDThread {
int id;
int errcode;
};
struct _MDThreadStack {
};
struct _MDLock {
};
struct _MDSemaphore {
};
struct _MDCVar {
};
struct _MDSegment {
};
/*
* md-specific cpu structure field
*/
struct _MDCPU_Unix {
#ifndef _PR_USE_POLL
#else
int ioq_pollfds_size;
#endif /* _PR_USE_POLL */
};
struct _MDCPU {
};
#define _MD_INIT_LOCKS()
#define _MD_INIT_IO()
#define _MD_IOQ_LOCK()
#define _MD_IOQ_UNLOCK()
/*
** Initialize the thread context preparing it to execute "_main()"
** - get a nice, fresh context
** - set its SP to the stack we allcoated for it
** - set it to start things at "e"
*/
/* this is supposed to point to the stack BASE, not to SP */ \
/*
** Save current context as it is scheduled away
*/
_PR_Schedule(); \
} \
/*
** Restore a thread context, saved by _MD_SWITCH_CONTEXT or set up
** by _MD_INIT_CONTEXT
** CXT_V0 is the register that holds the return value.
** We must set it to 1 so that we can see if the return from
** getcontext() is the result of calling getcontext() or
** setcontext()...
** setting a context got with getcontext() appears to
** return from getcontext(), too!
** CXT_A3 is the register that holds status when returning
** from a syscall. It is set to 0 to indicate success,
** because we want getcontext() on the other side of the magic
** door to be ok.
*/
_SETCONTEXT(uc); \
#endif
#endif
#endif /* nspr_reliantunix_defs_h___ */