nspr-4.8.6/mozilla/nsprpub/pr/include/md/_darwin.h - nest-learning-thermostat/5.1.7/nspr - Git at Google

 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* ***** BEGIN LICENSE BLOCK *****
  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
  *
  * The contents of this file are subject to the Mozilla Public License Version
  * 1.1 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
  * http://www.mozilla.org/MPL/
  *
  * Software distributed under the License is distributed on an "AS IS" basis,
  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  * for the specific language governing rights and limitations under the
  * License.
  *
  * The Original Code is the Netscape Portable Runtime (NSPR).
  *
  * The Initial Developer of the Original Code is
  * Netscape Communications Corporation.
  * Portions created by the Initial Developer are Copyright (C) 1998-2000
  * the Initial Developer. All Rights Reserved.
  *
  * Contributor(s):
  *
  * Alternatively, the contents of this file may be used under the terms of
  * either the GNU General Public License Version 2 or later (the "GPL"), or
  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  * in which case the provisions of the GPL or the LGPL are applicable instead
  * of those above. If you wish to allow use of your version of this file only
  * under the terms of either the GPL or the LGPL, and not to allow others to
  * use your version of this file under the terms of the MPL, indicate your
  * decision by deleting the provisions above and replace them with the notice
  * and other provisions required by the GPL or the LGPL. If you do not delete
  * the provisions above, a recipient may use your version of this file under
  * the terms of any one of the MPL, the GPL or the LGPL.
  *
  * ***** END LICENSE BLOCK ***** */

 #ifndef nspr_darwin_defs_h___
 #define nspr_darwin_defs_h___

 #include "prthread.h"

 #include <sys/syscall.h>

 #ifdef XP_MACOSX
 #include <AvailabilityMacros.h>
 #endif

 #define PR_LINKER_ARCH	"darwin"
 #define _PR_SI_SYSNAME  "DARWIN"
 #ifdef __i386__
 #define _PR_SI_ARCHITECTURE "x86"
 #elif defined(__x86_64__)
 #define _PR_SI_ARCHITECTURE "x86-64"
 #elif defined(__ppc__)
 #define _PR_SI_ARCHITECTURE "ppc"
 #endif
 #define PR_DLL_SUFFIX		".dylib"

 #define _PR_VMBASE              0x30000000
 #define _PR_STACK_VMBASE	0x50000000
 #define _MD_DEFAULT_STACK_SIZE	65536L
 #define _MD_MMAP_FLAGS          MAP_PRIVATE

 #undef  HAVE_STACK_GROWING_UP
 #define HAVE_DLL
 #ifdef __x86_64__
 #define USE_DLFCN
 #else
 #define USE_MACH_DYLD
 #endif
 #define _PR_HAVE_SOCKADDR_LEN
 #define _PR_STAT_HAS_ST_ATIMESPEC
 #define _PR_HAVE_LARGE_OFF_T
 #define _PR_HAVE_SYSV_SEMAPHORES
 #define PR_HAVE_SYSV_NAMED_SHARED_MEMORY

 #define _PR_INET6
 /*
  * I'd prefer to use getipnodebyname and getipnodebyaddr but the
  * getipnodebyname(3) man page on Mac OS X 10.2 says they are not
  * thread-safe.  AI_V4MAPPED|AI_ADDRCONFIG doesn't work either.
  */
 #define _PR_HAVE_GETHOSTBYNAME2
 #define _PR_HAVE_GETADDRINFO
 /*
  * On Mac OS X 10.2, gethostbyaddr fails with h_errno=NO_RECOVERY
  * if you pass an IPv4-mapped IPv6 address to it.
  */
 #define _PR_GHBA_DISALLOW_V4MAPPED
 #ifdef XP_MACOSX
 #if !defined(MAC_OS_X_VERSION_10_3) || \
     MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_3
 /*
  * socket(AF_INET6) fails with EPROTONOSUPPORT on Mac OS X 10.1.
  * IPv6 under OS X 10.2 and below is not complete (see bug 222031).
  */
 #define _PR_INET6_PROBE
 #endif /* DT < 10.3 */
 #if defined(MAC_OS_X_VERSION_10_2) && \
     MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_2
 /* Mac OS X 10.2 has inet_ntop and inet_pton. */
 #define _PR_HAVE_INET_NTOP
 #endif /* DT >= 10.2 */
 #endif /* XP_MACOSX */
 #define _PR_IPV6_V6ONLY_PROBE
 /* The IPV6_V6ONLY socket option is not defined on Mac OS X 10.1. */
 #ifndef IPV6_V6ONLY
 #define IPV6_V6ONLY 27
 #endif

 #ifdef __ppc__
 #define _PR_HAVE_ATOMIC_OPS
 #define _MD_INIT_ATOMIC()
 extern PRInt32 _PR_DarwinPPC_AtomicIncrement(PRInt32 *val);
 #define _MD_ATOMIC_INCREMENT(val)   _PR_DarwinPPC_AtomicIncrement(val)
 extern PRInt32 _PR_DarwinPPC_AtomicDecrement(PRInt32 *val);
 #define _MD_ATOMIC_DECREMENT(val)   _PR_DarwinPPC_AtomicDecrement(val)
 extern PRInt32 _PR_DarwinPPC_AtomicSet(PRInt32 *val, PRInt32 newval);
 #define _MD_ATOMIC_SET(val, newval) _PR_DarwinPPC_AtomicSet(val, newval)
 extern PRInt32 _PR_DarwinPPC_AtomicAdd(PRInt32 *ptr, PRInt32 val);
 #define _MD_ATOMIC_ADD(ptr, val)    _PR_DarwinPPC_AtomicAdd(ptr, val)
 #endif /* __ppc__ */

 #ifdef __i386__
 #define _PR_HAVE_ATOMIC_OPS
 #define _MD_INIT_ATOMIC()
 extern PRInt32 _PR_Darwin_x86_AtomicIncrement(PRInt32 *val);
 #define _MD_ATOMIC_INCREMENT(val)   _PR_Darwin_x86_AtomicIncrement(val)
 extern PRInt32 _PR_Darwin_x86_AtomicDecrement(PRInt32 *val);
 #define _MD_ATOMIC_DECREMENT(val)   _PR_Darwin_x86_AtomicDecrement(val)
 extern PRInt32 _PR_Darwin_x86_AtomicSet(PRInt32 *val, PRInt32 newval);
 #define _MD_ATOMIC_SET(val, newval) _PR_Darwin_x86_AtomicSet(val, newval)
 extern PRInt32 _PR_Darwin_x86_AtomicAdd(PRInt32 *ptr, PRInt32 val);
 #define _MD_ATOMIC_ADD(ptr, val)    _PR_Darwin_x86_AtomicAdd(ptr, val)
 #endif /* __i386__ */

 #ifdef __x86_64__
 #define _PR_HAVE_ATOMIC_OPS
 #define _MD_INIT_ATOMIC()
 extern PRInt32 _PR_Darwin_x86_64_AtomicIncrement(PRInt32 *val);
 #define _MD_ATOMIC_INCREMENT(val)   _PR_Darwin_x86_64_AtomicIncrement(val)
 extern PRInt32 _PR_Darwin_x86_64_AtomicDecrement(PRInt32 *val);
 #define _MD_ATOMIC_DECREMENT(val)   _PR_Darwin_x86_64_AtomicDecrement(val)
 extern PRInt32 _PR_Darwin_x86_64_AtomicSet(PRInt32 *val, PRInt32 newval);
 #define _MD_ATOMIC_SET(val, newval) _PR_Darwin_x86_64_AtomicSet(val, newval)
 extern PRInt32 _PR_Darwin_x86_64_AtomicAdd(PRInt32 *ptr, PRInt32 val);
 #define _MD_ATOMIC_ADD(ptr, val)    _PR_Darwin_x86_64_AtomicAdd(ptr, val)
 #endif /* __x86_64__ */

 #define USE_SETJMP

 #if !defined(_PR_PTHREADS)

 #include <setjmp.h>

 #define PR_CONTEXT_TYPE	jmp_buf

 #define CONTEXT(_th)       ((_th)->md.context)
 #define _MD_GET_SP(_th)    (((struct sigcontext *) (_th)->md.context)->sc_onstack)
 #define PR_NUM_GCREGS	    _JBLEN

 /*
 ** Initialize a thread context to run "_main()" when started
 */
 #define _MD_INIT_CONTEXT(_thread, _sp, _main, status)  \
 {  \
     *status = PR_TRUE;  \
     if (setjmp(CONTEXT(_thread))) {  \
         _main();  \
     }  \
     _MD_GET_SP(_thread) = (unsigned char*) ((_sp) - 64); \
 }

 #define _MD_SWITCH_CONTEXT(_thread)  \
     if (!setjmp(CONTEXT(_thread))) {  \
 	(_thread)->md.errcode = errno;  \
 	_PR_Schedule();  \
     }

 /*
 ** Restore a thread context, saved by _MD_SWITCH_CONTEXT
 */
 #define _MD_RESTORE_CONTEXT(_thread) \
 {   \
     errno = (_thread)->md.errcode;  \
     _MD_SET_CURRENT_THREAD(_thread);  \
     longjmp(CONTEXT(_thread), 1);  \
 }

 /* Machine-dependent (MD) data structures */

 struct _MDThread {
     PR_CONTEXT_TYPE context;
     int id;
     int errcode;
 };

 struct _MDThreadStack {
     PRInt8 notused;
 };

 struct _MDLock {
     PRInt8 notused;
 };

 struct _MDSemaphore {
     PRInt8 notused;
 };

 struct _MDCVar {
     PRInt8 notused;
 };

 struct _MDSegment {
     PRInt8 notused;
 };

 /*
  * md-specific cpu structure field
  */
 #define _PR_MD_MAX_OSFD FD_SETSIZE

 struct _MDCPU_Unix {
     PRCList ioQ;
     PRUint32 ioq_timeout;
     PRInt32 ioq_max_osfd;
     PRInt32 ioq_osfd_cnt;
 #ifndef _PR_USE_POLL
     fd_set fd_read_set, fd_write_set, fd_exception_set;
     PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
 				fd_exception_cnt[_PR_MD_MAX_OSFD];
 #else
 	struct pollfd *ioq_pollfds;
 	int ioq_pollfds_size;
 #endif	/* _PR_USE_POLL */
 };

 #define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
 #define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
 #define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
 #define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
 #define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
 #define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
 #define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
 #define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
 #define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
 #define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
 #define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
 #define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
 #define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)

 #define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32

 struct _MDCPU {
 	struct _MDCPU_Unix md_unix;
 };

 #define _MD_INIT_LOCKS()
 #define _MD_NEW_LOCK(lock) PR_SUCCESS
 #define _MD_FREE_LOCK(lock)
 #define _MD_LOCK(lock)
 #define _MD_UNLOCK(lock)
 #define _MD_INIT_IO()
 #define _MD_IOQ_LOCK()
 #define _MD_IOQ_UNLOCK()

 extern PRStatus _MD_InitializeThread(PRThread *thread);

 #define _MD_INIT_RUNNING_CPU(cpu)       _MD_unix_init_running_cpu(cpu)
 #define _MD_INIT_THREAD                 _MD_InitializeThread
 #define _MD_EXIT_THREAD(thread)
 #define _MD_SUSPEND_THREAD(thread)      _MD_suspend_thread
 #define _MD_RESUME_THREAD(thread)       _MD_resume_thread
 #define _MD_CLEAN_THREAD(_thread)

 extern PRStatus _MD_CREATE_THREAD(
     PRThread *thread,
     void (*start) (void *),
     PRThreadPriority priority,
     PRThreadScope scope,
     PRThreadState state,
     PRUint32 stackSize);
 extern void _MD_SET_PRIORITY(struct _MDThread *thread, PRUintn newPri);
 extern PRStatus _MD_WAIT(PRThread *, PRIntervalTime timeout);
 extern PRStatus _MD_WAKEUP_WAITER(PRThread *);
 extern void _MD_YIELD(void);

 #endif /* ! _PR_PTHREADS */

 #define _MD_EARLY_INIT          _MD_EarlyInit
 #define _MD_FINAL_INIT			_PR_UnixInit
 #define _MD_GET_INTERVAL        _PR_UNIX_GetInterval
 #define _MD_INTERVAL_PER_SEC    _PR_UNIX_TicksPerSecond

 extern void             _MD_EarlyInit(void);
 extern PRIntervalTime   _PR_UNIX_GetInterval(void);
 extern PRIntervalTime   _PR_UNIX_TicksPerSecond(void);

 /*
  * We wrapped the select() call.  _MD_SELECT refers to the built-in,
  * unwrapped version.
  */
 #define _MD_SELECT(nfds,r,w,e,tv) syscall(SYS_select,nfds,r,w,e,tv)

 /* For writev() */
 #include <sys/uio.h>

 #endif /* nspr_darwin_defs_h___ */
	/* -- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -- */
	/* *** BEGIN LICENSE BLOCK ***
	* Version: MPL 1.1/GPL 2.0/LGPL 2.1
	*
	* The contents of this file are subject to the Mozilla Public License Version
	* 1.1 (the "License"); you may not use this file except in compliance with
	* the License. You may obtain a copy of the License at
	* http://www.mozilla.org/MPL/
	*
	* Software distributed under the License is distributed on an "AS IS" basis,
	* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
	* for the specific language governing rights and limitations under the
	* License.
	*
	* The Original Code is the Netscape Portable Runtime (NSPR).
	*
	* The Initial Developer of the Original Code is
	* Netscape Communications Corporation.
	* Portions created by the Initial Developer are Copyright (C) 1998-2000
	* the Initial Developer. All Rights Reserved.
	*
	* Contributor(s):
	*
	* Alternatively, the contents of this file may be used under the terms of
	* either the GNU General Public License Version 2 or later (the "GPL"), or
	* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
	* in which case the provisions of the GPL or the LGPL are applicable instead
	* of those above. If you wish to allow use of your version of this file only
	* under the terms of either the GPL or the LGPL, and not to allow others to
	* use your version of this file under the terms of the MPL, indicate your
	* decision by deleting the provisions above and replace them with the notice
	* and other provisions required by the GPL or the LGPL. If you do not delete
	* the provisions above, a recipient may use your version of this file under
	* the terms of any one of the MPL, the GPL or the LGPL.
	*
	* *** END LICENSE BLOCK *** */

	#ifndef nspr_darwin_defs_h___
	#define nspr_darwin_defs_h___

	#include "prthread.h"

	#include <sys/syscall.h>

	#ifdef XP_MACOSX
	#include <AvailabilityMacros.h>
	#endif

	#define PR_LINKER_ARCH "darwin"
	#define _PR_SI_SYSNAME "DARWIN"
	#ifdef __i386__
	#define _PR_SI_ARCHITECTURE "x86"
	#elif defined(__x86_64__)
	#define _PR_SI_ARCHITECTURE "x86-64"
	#elif defined(__ppc__)
	#define _PR_SI_ARCHITECTURE "ppc"
	#endif
	#define PR_DLL_SUFFIX ".dylib"

	#define _PR_VMBASE 0x30000000
	#define _PR_STACK_VMBASE 0x50000000
	#define _MD_DEFAULT_STACK_SIZE 65536L
	#define _MD_MMAP_FLAGS MAP_PRIVATE

	#undef HAVE_STACK_GROWING_UP
	#define HAVE_DLL
	#ifdef __x86_64__
	#define USE_DLFCN
	#else
	#define USE_MACH_DYLD
	#endif
	#define _PR_HAVE_SOCKADDR_LEN
	#define _PR_STAT_HAS_ST_ATIMESPEC
	#define _PR_HAVE_LARGE_OFF_T
	#define _PR_HAVE_SYSV_SEMAPHORES
	#define PR_HAVE_SYSV_NAMED_SHARED_MEMORY

	#define _PR_INET6
	/*
	* I'd prefer to use getipnodebyname and getipnodebyaddr but the
	* getipnodebyname(3) man page on Mac OS X 10.2 says they are not
	* thread-safe. AI_V4MAPPED\|AI_ADDRCONFIG doesn't work either.
	*/
	#define _PR_HAVE_GETHOSTBYNAME2
	#define _PR_HAVE_GETADDRINFO
	/*
	* On Mac OS X 10.2, gethostbyaddr fails with h_errno=NO_RECOVERY
	* if you pass an IPv4-mapped IPv6 address to it.
	*/
	#define _PR_GHBA_DISALLOW_V4MAPPED
	#ifdef XP_MACOSX
	#if !defined(MAC_OS_X_VERSION_10_3) \|\| \
	MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_3
	/*
	* socket(AF_INET6) fails with EPROTONOSUPPORT on Mac OS X 10.1.
	* IPv6 under OS X 10.2 and below is not complete (see bug 222031).
	*/
	#define _PR_INET6_PROBE
	#endif /* DT < 10.3 */
	#if defined(MAC_OS_X_VERSION_10_2) && \
	MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_2
	/* Mac OS X 10.2 has inet_ntop and inet_pton. */
	#define _PR_HAVE_INET_NTOP
	#endif /* DT >= 10.2 */
	#endif /* XP_MACOSX */
	#define _PR_IPV6_V6ONLY_PROBE
	/* The IPV6_V6ONLY socket option is not defined on Mac OS X 10.1. */
	#ifndef IPV6_V6ONLY
	#define IPV6_V6ONLY 27
	#endif

	#ifdef __ppc__
	#define _PR_HAVE_ATOMIC_OPS
	#define _MD_INIT_ATOMIC()
	extern PRInt32 _PR_DarwinPPC_AtomicIncrement(PRInt32 *val);
	#define _MD_ATOMIC_INCREMENT(val) _PR_DarwinPPC_AtomicIncrement(val)
	extern PRInt32 _PR_DarwinPPC_AtomicDecrement(PRInt32 *val);
	#define _MD_ATOMIC_DECREMENT(val) _PR_DarwinPPC_AtomicDecrement(val)
	extern PRInt32 _PR_DarwinPPC_AtomicSet(PRInt32 *val, PRInt32 newval);
	#define _MD_ATOMIC_SET(val, newval) _PR_DarwinPPC_AtomicSet(val, newval)
	extern PRInt32 _PR_DarwinPPC_AtomicAdd(PRInt32 *ptr, PRInt32 val);
	#define _MD_ATOMIC_ADD(ptr, val) _PR_DarwinPPC_AtomicAdd(ptr, val)
	#endif /* __ppc__ */

	#ifdef __i386__
	#define _PR_HAVE_ATOMIC_OPS
	#define _MD_INIT_ATOMIC()
	extern PRInt32 _PR_Darwin_x86_AtomicIncrement(PRInt32 *val);
	#define _MD_ATOMIC_INCREMENT(val) _PR_Darwin_x86_AtomicIncrement(val)
	extern PRInt32 _PR_Darwin_x86_AtomicDecrement(PRInt32 *val);
	#define _MD_ATOMIC_DECREMENT(val) _PR_Darwin_x86_AtomicDecrement(val)
	extern PRInt32 _PR_Darwin_x86_AtomicSet(PRInt32 *val, PRInt32 newval);
	#define _MD_ATOMIC_SET(val, newval) _PR_Darwin_x86_AtomicSet(val, newval)
	extern PRInt32 _PR_Darwin_x86_AtomicAdd(PRInt32 *ptr, PRInt32 val);
	#define _MD_ATOMIC_ADD(ptr, val) _PR_Darwin_x86_AtomicAdd(ptr, val)
	#endif /* __i386__ */

	#ifdef __x86_64__
	#define _PR_HAVE_ATOMIC_OPS
	#define _MD_INIT_ATOMIC()
	extern PRInt32 _PR_Darwin_x86_64_AtomicIncrement(PRInt32 *val);
	#define _MD_ATOMIC_INCREMENT(val) _PR_Darwin_x86_64_AtomicIncrement(val)
	extern PRInt32 _PR_Darwin_x86_64_AtomicDecrement(PRInt32 *val);
	#define _MD_ATOMIC_DECREMENT(val) _PR_Darwin_x86_64_AtomicDecrement(val)
	extern PRInt32 _PR_Darwin_x86_64_AtomicSet(PRInt32 *val, PRInt32 newval);
	#define _MD_ATOMIC_SET(val, newval) _PR_Darwin_x86_64_AtomicSet(val, newval)
	extern PRInt32 _PR_Darwin_x86_64_AtomicAdd(PRInt32 *ptr, PRInt32 val);
	#define _MD_ATOMIC_ADD(ptr, val) _PR_Darwin_x86_64_AtomicAdd(ptr, val)
	#endif /* __x86_64__ */

	#define USE_SETJMP

	#if !defined(_PR_PTHREADS)

	#include <setjmp.h>

	#define PR_CONTEXT_TYPE jmp_buf

	#define CONTEXT(_th) ((_th)->md.context)
	#define _MD_GET_SP(_th) (((struct sigcontext *) (_th)->md.context)->sc_onstack)
	#define PR_NUM_GCREGS _JBLEN

	/*
	** Initialize a thread context to run "_main()" when started
	*/
	#define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \
	{ \
	*status = PR_TRUE; \
	if (setjmp(CONTEXT(_thread))) { \
	_main(); \
	} \
	_MD_GET_SP(_thread) = (unsigned char*) ((_sp) - 64); \
	}

	#define _MD_SWITCH_CONTEXT(_thread) \
	if (!setjmp(CONTEXT(_thread))) { \
	(_thread)->md.errcode = errno; \
	_PR_Schedule(); \
	}

	/*
	** Restore a thread context, saved by _MD_SWITCH_CONTEXT
	*/
	#define _MD_RESTORE_CONTEXT(_thread) \
	{ \
	errno = (_thread)->md.errcode; \
	_MD_SET_CURRENT_THREAD(_thread); \
	longjmp(CONTEXT(_thread), 1); \
	}

	/* Machine-dependent (MD) data structures */

	struct _MDThread {
	PR_CONTEXT_TYPE context;
	int id;
	int errcode;
	};

	struct _MDThreadStack {
	PRInt8 notused;
	};

	struct _MDLock {
	PRInt8 notused;
	};

	struct _MDSemaphore {
	PRInt8 notused;
	};

	struct _MDCVar {
	PRInt8 notused;
	};

	struct _MDSegment {
	PRInt8 notused;
	};

	/*
	* md-specific cpu structure field
	*/
	#define _PR_MD_MAX_OSFD FD_SETSIZE

	struct _MDCPU_Unix {
	PRCList ioQ;
	PRUint32 ioq_timeout;
	PRInt32 ioq_max_osfd;
	PRInt32 ioq_osfd_cnt;
	#ifndef _PR_USE_POLL
	fd_set fd_read_set, fd_write_set, fd_exception_set;
	PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
	fd_exception_cnt[_PR_MD_MAX_OSFD];
	#else
	struct pollfd *ioq_pollfds;
	int ioq_pollfds_size;
	#endif /* _PR_USE_POLL */
	};

	#define _PR_IOQ(_cpu) ((_cpu)->md.md_unix.ioQ)
	#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
	#define _PR_FD_READ_SET(_cpu) ((_cpu)->md.md_unix.fd_read_set)
	#define _PR_FD_READ_CNT(_cpu) ((_cpu)->md.md_unix.fd_read_cnt)
	#define _PR_FD_WRITE_SET(_cpu) ((_cpu)->md.md_unix.fd_write_set)
	#define _PR_FD_WRITE_CNT(_cpu) ((_cpu)->md.md_unix.fd_write_cnt)
	#define _PR_FD_EXCEPTION_SET(_cpu) ((_cpu)->md.md_unix.fd_exception_set)
	#define _PR_FD_EXCEPTION_CNT(_cpu) ((_cpu)->md.md_unix.fd_exception_cnt)
	#define _PR_IOQ_TIMEOUT(_cpu) ((_cpu)->md.md_unix.ioq_timeout)
	#define _PR_IOQ_MAX_OSFD(_cpu) ((_cpu)->md.md_unix.ioq_max_osfd)
	#define _PR_IOQ_OSFD_CNT(_cpu) ((_cpu)->md.md_unix.ioq_osfd_cnt)
	#define _PR_IOQ_POLLFDS(_cpu) ((_cpu)->md.md_unix.ioq_pollfds)
	#define _PR_IOQ_POLLFDS_SIZE(_cpu) ((_cpu)->md.md_unix.ioq_pollfds_size)

	#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu) 32

	struct _MDCPU {
	struct _MDCPU_Unix md_unix;
	};

	#define _MD_INIT_LOCKS()
	#define _MD_NEW_LOCK(lock) PR_SUCCESS
	#define _MD_FREE_LOCK(lock)
	#define _MD_LOCK(lock)
	#define _MD_UNLOCK(lock)
	#define _MD_INIT_IO()
	#define _MD_IOQ_LOCK()
	#define _MD_IOQ_UNLOCK()

	extern PRStatus _MD_InitializeThread(PRThread *thread);

	#define _MD_INIT_RUNNING_CPU(cpu) _MD_unix_init_running_cpu(cpu)
	#define _MD_INIT_THREAD _MD_InitializeThread
	#define _MD_EXIT_THREAD(thread)
	#define _MD_SUSPEND_THREAD(thread) _MD_suspend_thread
	#define _MD_RESUME_THREAD(thread) _MD_resume_thread
	#define _MD_CLEAN_THREAD(_thread)

	extern PRStatus _MD_CREATE_THREAD(
	PRThread *thread,
	void (start) (void ),
	PRThreadPriority priority,
	PRThreadScope scope,
	PRThreadState state,
	PRUint32 stackSize);
	extern void _MD_SET_PRIORITY(struct _MDThread *thread, PRUintn newPri);
	extern PRStatus _MD_WAIT(PRThread *, PRIntervalTime timeout);
	extern PRStatus _MD_WAKEUP_WAITER(PRThread *);
	extern void _MD_YIELD(void);

	#endif /* ! _PR_PTHREADS */

	#define _MD_EARLY_INIT _MD_EarlyInit
	#define _MD_FINAL_INIT _PR_UnixInit
	#define _MD_GET_INTERVAL _PR_UNIX_GetInterval
	#define _MD_INTERVAL_PER_SEC _PR_UNIX_TicksPerSecond

	extern void _MD_EarlyInit(void);
	extern PRIntervalTime _PR_UNIX_GetInterval(void);
	extern PRIntervalTime _PR_UNIX_TicksPerSecond(void);

	/*
	* We wrapped the select() call. _MD_SELECT refers to the built-in,
	* unwrapped version.
	*/
	#define _MD_SELECT(nfds,r,w,e,tv) syscall(SYS_select,nfds,r,w,e,tv)

	/* For writev() */
	#include <sys/uio.h>

	#endif /* nspr_darwin_defs_h___ */