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_winnt.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_win32_defs_h___
#define nspr_win32_defs_h___

/* Need to force service-pack 3 extensions to be defined by
** setting _WIN32_WINNT to NT 4.0 for winsock.h, winbase.h, winnt.h.
*/ 
#ifndef  _WIN32_WINNT
    #define _WIN32_WINNT 0x0400
#elif   (_WIN32_WINNT < 0x0400)
    #undef  _WIN32_WINNT
    #define _WIN32_WINNT 0x0400
#endif /* _WIN32_WINNT */

#include <windows.h>
#include <winsock.h>
#ifdef __MINGW32__
#include <mswsock.h>
#endif
#include <errno.h>

#include "prio.h"
#include "prclist.h"

/*
 * Internal configuration macros
 */

#define PR_LINKER_ARCH      "win32"
#define _PR_SI_SYSNAME        "WINNT"
#define _PR_SI_ARCHITECTURE   "x86"    /* XXXMB hardcode for now */

#define HAVE_DLL
#define HAVE_CUSTOM_USER_THREADS
#define HAVE_THREAD_AFFINITY
#define _PR_HAVE_GETADDRINFO
#define _PR_INET6_PROBE
#ifndef _PR_INET6
#define AF_INET6 23
/* newer ws2tcpip.h provides these */
#ifndef AI_CANONNAME
#define AI_CANONNAME 0x2
struct addrinfo {
    int ai_flags;
    int ai_family;
    int ai_socktype;
    int ai_protocol;
    size_t ai_addrlen;
    char *ai_canonname;
    struct sockaddr *ai_addr;
    struct addrinfo *ai_next;
};
#endif
#endif
#define _PR_HAVE_THREADSAFE_GETHOST
#define _PR_HAVE_ATOMIC_OPS
#define _PR_HAVE_ATOMIC_CAS
#define PR_HAVE_WIN32_NAMED_SHARED_MEMORY
#define _PR_HAVE_PEEK_BUFFER
#define _PR_PEEK_BUFFER_MAX (32 * 1024)
#define _PR_FD_NEED_EMULATE_MSG_PEEK(fd) \
    (!(fd)->secret->nonblocking && (fd)->secret->inheritable != _PR_TRI_TRUE)

/* --- Common User-Thread/Native-Thread Definitions --------------------- */

/* --- Globals --- */
extern struct PRLock                      *_pr_schedLock;

/* --- Typedefs --- */
typedef void (*FiberFunc)(void *);

#define PR_NUM_GCREGS           8
typedef PRInt32                   PR_CONTEXT_TYPE[PR_NUM_GCREGS];
#define GC_VMBASE               0x40000000
#define GC_VMLIMIT              0x00FFFFFF

#define _MD_MAGIC_THREAD      0x22222222
#define _MD_MAGIC_THREADSTACK 0x33333333
#define _MD_MAGIC_SEGMENT     0x44444444
#define _MD_MAGIC_DIR         0x55555555

struct _MDCPU {
    int              unused;
};

enum _MDIOModel {
    _MD_BlockingIO = 0x38,
    _MD_MultiWaitIO = 0x49
};

typedef struct _MDOverlapped {
    OVERLAPPED overlapped;              /* Used for async I/O */

    enum _MDIOModel ioModel;            /* The I/O model to implement
                                         * using overlapped I/O.
                                         */
    union {
        struct _MDThread *mdThread;     /* For blocking I/O, this structure
                                         * is embedded in the _MDThread
                                         * structure.
                                         */
        struct {
            PRCList links;              /* for group->io_ready list */
            struct PRRecvWait *desc;    /* For multiwait I/O, this structure
                                         * is associated with a PRRecvWait
                                         * structure.
                                         */
            struct PRWaitGroup *group;
            struct TimerEvent *timer;
            DWORD error;
        } mw;
    } data;
} _MDOverlapped;

struct _MDThread {
        /* The overlapped structure must be first! */
    struct _MDOverlapped overlapped;    /* Used for async IO for this thread */
    void            *acceptex_buf;      /* Used for AcceptEx() */
    TRANSMIT_FILE_BUFFERS *xmit_bufs;   /* Used for TransmitFile() */
    HANDLE           blocked_sema;      /* Threads block on this when waiting
                                         * for IO or CondVar.
                                         */
    PRInt32          blocked_io_status; /* Status of the completed IO */
    PRInt32          blocked_io_bytes;  /* Bytes transferred for completed IO */
    PRInt32          blocked_io_error;  /* Save error if status is FALSE */
    HANDLE           handle;
    PRUint32         id;
    void            *sp;                /* only valid when suspended */
    PRUint32         magic;             /* for debugging */
    PR_CONTEXT_TYPE  gcContext;         /* Thread context for GC */
      struct _PRCPU    *thr_bound_cpu;          /* thread bound to cpu */
      PRBool             interrupt_disabled;/* thread cannot be interrupted */
      HANDLE                   thr_event;             /* For native-threads-only support,
                                                                  thread blocks on this event         */

    /* The following are used only if this is a fiber */
    void            *fiber_id;          /* flag whether or not this is a fiber*/
    FiberFunc        fiber_fn;          /* main fiber routine */
    void            *fiber_arg;         /* arg to main fiber routine */
    PRUint32         fiber_stacksize;   /* stacksize for fiber */
    PRInt32          fiber_last_error;  /* last error for the fiber */
    void (*start)(void *);              /* used by _PR_MD_CREATE_THREAD to
                                         * pass its 'start' argument to
                                         * pr_root. */
};

struct _MDThreadStack {
    PRUint32           magic;          /* for debugging */
};

struct _MDSegment {
    PRUint32           magic;          /* for debugging */
};

#undef PROFILE_LOCKS

struct _MDLock {
    CRITICAL_SECTION mutex;          /* this is recursive on NT */
#ifdef PROFILE_LOCKS
    PRInt32 hitcount;
    PRInt32 misscount;
#endif
};

struct _MDDir {
    HANDLE           d_hdl;
    WIN32_FIND_DATA  d_entry;
    PRBool           firstEntry;     /* Is this the entry returned
                                      * by FindFirstFile()? */
    PRUint32         magic;          /* for debugging */
};

struct _MDCVar {
    PRUint32         unused;
};

struct _MDSemaphore {
    HANDLE           sem;
};

struct _MDFileDesc {
    PRInt32 osfd;    /* The osfd can come from one of three spaces:
                      * - For stdin, stdout, and stderr, we are using
                      *   the libc file handle (0, 1, 2), which is an int.
                      * - For files and pipes, we are using Win32 HANDLE,
                      *   which is a void*.
                      * - For sockets, we are using Winsock SOCKET, which
                      *   is a u_int.
                      */
    PRBool io_model_committed;  /* The io model (blocking or nonblocking)
                                 * for this osfd has been committed and
                                 * cannot be changed.  The osfd has been
                                 * either associated with the io
                                 * completion port or made nonblocking. */
    PRBool sync_file_io;        /* Use synchronous file I/O on the osfd
                                 * (a file handle) */
    PRBool accepted_socket;     /* Is this an accepted socket (on the
                                 * server side)? */
    PRNetAddr peer_addr;        /* If this is an accepted socket, cache
                                 * the peer's address returned by
                                 * AcceptEx().  This is to work around
                                 * the bug that getpeername() on an
                                 * socket accepted by AcceptEx() returns
                                 * an all-zero net address. */
};

struct _MDProcess {
    HANDLE handle;
    DWORD id;
};


/* --- Misc stuff --- */
#define _MD_GET_SP(thread)            (thread)->md.gcContext[6]

/* --- NT security stuff --- */

extern void _PR_NT_InitSids(void);
extern void _PR_NT_FreeSids(void);
extern PRStatus _PR_NT_MakeSecurityDescriptorACL(
    PRIntn mode,
    DWORD accessTable[],
    PSECURITY_DESCRIPTOR *resultSD,
    PACL *resultACL
);
extern void _PR_NT_FreeSecurityDescriptorACL(
    PSECURITY_DESCRIPTOR pSD, PACL pACL);

/* --- IO stuff --- */

extern PRInt32 _md_Associate(HANDLE);
extern PRInt32 _PR_MD_CLOSE(PRInt32 osfd, PRBool socket);

#define _MD_OPEN                      _PR_MD_OPEN
#define _MD_OPEN_FILE                 _PR_MD_OPEN_FILE
#define _MD_READ                      _PR_MD_READ
#define _MD_WRITE                     _PR_MD_WRITE
#define _MD_WRITEV                    _PR_MD_WRITEV
#define _MD_LSEEK                     _PR_MD_LSEEK
#define _MD_LSEEK64                   _PR_MD_LSEEK64
#define _MD_CLOSE_FILE(f)             _PR_MD_CLOSE(f, PR_FALSE)
#define _MD_GETFILEINFO               _PR_MD_GETFILEINFO
#define _MD_GETFILEINFO64             _PR_MD_GETFILEINFO64
#define _MD_GETOPENFILEINFO           _PR_MD_GETOPENFILEINFO
#define _MD_GETOPENFILEINFO64         _PR_MD_GETOPENFILEINFO64
#define _MD_STAT                      _PR_MD_STAT
#define _MD_RENAME                    _PR_MD_RENAME     
#define _MD_ACCESS                    _PR_MD_ACCESS     
#define _MD_DELETE                    _PR_MD_DELETE     
#define _MD_MKDIR                     _PR_MD_MKDIR      
#define _MD_MAKE_DIR                  _PR_MD_MAKE_DIR
#define _MD_RMDIR                     _PR_MD_RMDIR      
#define _MD_LOCKFILE                  _PR_MD_LOCKFILE
#define _MD_TLOCKFILE                 _PR_MD_TLOCKFILE
#define _MD_UNLOCKFILE                _PR_MD_UNLOCKFILE

/* --- Socket IO stuff --- */
#define _MD_GET_SOCKET_ERROR()    WSAGetLastError()
#define _MD_SET_SOCKET_ERROR(_err) WSASetLastError(_err)

#define _MD_INIT_FILEDESC(fd)
#define _MD_MAKE_NONBLOCK             _PR_MD_MAKE_NONBLOCK
#define _MD_INIT_FD_INHERITABLE       _PR_MD_INIT_FD_INHERITABLE
#define _MD_QUERY_FD_INHERITABLE      _PR_MD_QUERY_FD_INHERITABLE
#define _MD_SHUTDOWN                  _PR_MD_SHUTDOWN
#define _MD_LISTEN                    _PR_MD_LISTEN
#define _MD_CLOSE_SOCKET(s)           _PR_MD_CLOSE(s, PR_TRUE)
#define _MD_SENDTO                    _PR_MD_SENDTO
#define _MD_RECVFROM                  _PR_MD_RECVFROM
#define _MD_SOCKETPAIR(s, type, proto, sv) -1
#define _MD_GETSOCKNAME               _PR_MD_GETSOCKNAME
#define _MD_GETPEERNAME               _PR_MD_GETPEERNAME
#define _MD_GETSOCKOPT                _PR_MD_GETSOCKOPT
#define _MD_SETSOCKOPT                _PR_MD_SETSOCKOPT
#define _MD_SELECT                    select
extern int _PR_NTFiberSafeSelect(int, fd_set *, fd_set *, fd_set *,
    const struct timeval *);
#define _MD_FSYNC                     _PR_MD_FSYNC
#define _MD_SOCKETAVAILABLE           _PR_MD_SOCKETAVAILABLE
#define _MD_PIPEAVAILABLE             _PR_MD_PIPEAVAILABLE
#define _MD_SET_FD_INHERITABLE        _PR_MD_SET_FD_INHERITABLE

#define _MD_INIT_ATOMIC()
#if defined(_M_IX86) || defined(_X86_)
#define _MD_ATOMIC_INCREMENT          _PR_MD_ATOMIC_INCREMENT
#define _MD_ATOMIC_ADD                _PR_MD_ATOMIC_ADD
#define _MD_ATOMIC_DECREMENT          _PR_MD_ATOMIC_DECREMENT
#else /* non-x86 processors */
#define _MD_ATOMIC_INCREMENT(x)       InterlockedIncrement((PLONG)x)
#define _MD_ATOMIC_ADD(ptr,val)    (InterlockedExchangeAdd((PLONG)ptr, (LONG)val) + val)
#define _MD_ATOMIC_DECREMENT(x)       InterlockedDecrement((PLONG)x)
#endif /* x86 */
#define _MD_ATOMIC_SET(x,y)           InterlockedExchange((PLONG)x, (LONG)y)

#define _MD_INIT_IO                   _PR_MD_INIT_IO
#define _MD_SOCKET                    _PR_MD_SOCKET
#define _MD_CONNECT                   _PR_MD_CONNECT

#define _MD_ACCEPT(s, a, l, to)       \
        _MD_FAST_ACCEPT(s, a, l, to, PR_FALSE, NULL, NULL)
#define _MD_FAST_ACCEPT(s, a, l, to, fast, cb, cba) \
        _PR_MD_FAST_ACCEPT(s, a, l, to, fast, cb, cba)
#define _MD_ACCEPT_READ(s, ns, ra, buf, l, t) \
        _MD_FAST_ACCEPT_READ(s, ns, ra, buf, l, t, PR_FALSE, NULL, NULL)
#define _MD_FAST_ACCEPT_READ(s, ns, ra, buf, l, t, fast, cb, cba) \
        _PR_MD_FAST_ACCEPT_READ(s, ns, ra, buf, l, t, fast, cb, cba)
#define _MD_UPDATE_ACCEPT_CONTEXT     _PR_MD_UPDATE_ACCEPT_CONTEXT

#define _MD_BIND                      _PR_MD_BIND
#define _MD_RECV                      _PR_MD_RECV
#define _MD_SEND                      _PR_MD_SEND
#define _MD_SENDFILE                  _PR_MD_SENDFILE
#define _MD_PR_POLL                   _PR_MD_PR_POLL

/* --- Scheduler stuff --- */
#define _MD_PAUSE_CPU                   _PR_MD_PAUSE_CPU

/* --- DIR stuff --- */
#define PR_DIRECTORY_SEPARATOR        '\\'
#define PR_DIRECTORY_SEPARATOR_STR    "\\"
#define PR_PATH_SEPARATOR           ';'
#define PR_PATH_SEPARATOR_STR       ";"
#define _MD_ERRNO()                   GetLastError()
#define _MD_OPEN_DIR                  _PR_MD_OPEN_DIR
#define _MD_CLOSE_DIR                 _PR_MD_CLOSE_DIR
#define _MD_READ_DIR                  _PR_MD_READ_DIR

/* --- Segment stuff --- */
#define _MD_INIT_SEGS()
#define _MD_ALLOC_SEGMENT(seg, size, vaddr)   0
#define _MD_FREE_SEGMENT(seg)

/* --- Environment Stuff --- */
#define _MD_GET_ENV                 _PR_MD_GET_ENV
#define _MD_PUT_ENV                 _PR_MD_PUT_ENV

/* --- Threading Stuff --- */
#define _MD_DEFAULT_STACK_SIZE            0
#define _MD_INIT_THREAD             _PR_MD_INIT_THREAD
#define _MD_INIT_ATTACHED_THREAD    _PR_MD_INIT_THREAD
#define _MD_CREATE_THREAD           _PR_MD_CREATE_THREAD
#define _MD_JOIN_THREAD             _PR_MD_JOIN_THREAD
#define _MD_END_THREAD              _PR_MD_END_THREAD
#define _MD_YIELD                   _PR_MD_YIELD
#define _MD_SET_PRIORITY            _PR_MD_SET_PRIORITY
#define _MD_CLEAN_THREAD            _PR_MD_CLEAN_THREAD
#define _MD_SETTHREADAFFINITYMASK   _PR_MD_SETTHREADAFFINITYMASK
#define _MD_GETTHREADAFFINITYMASK   _PR_MD_GETTHREADAFFINITYMASK
#define _MD_EXIT_THREAD             _PR_MD_EXIT_THREAD
#define _MD_SUSPEND_THREAD          _PR_MD_SUSPEND_THREAD
#define _MD_RESUME_THREAD           _PR_MD_RESUME_THREAD
#define _MD_SUSPEND_CPU             _PR_MD_SUSPEND_CPU
#define _MD_RESUME_CPU              _PR_MD_RESUME_CPU
#define _MD_BEGIN_SUSPEND_ALL()
#define _MD_BEGIN_RESUME_ALL()
#define _MD_END_SUSPEND_ALL()
#define _MD_END_RESUME_ALL()

extern void _PR_Unblock_IO_Wait(PRThread *thr);

/* --- Lock stuff --- */
#define _MD_NEW_LOCK(lock)            (InitializeCriticalSection(&((lock)->mutex)),PR_SUCCESS)
#define _MD_FREE_LOCK(lock)           DeleteCriticalSection(&((lock)->mutex))
#ifndef PROFILE_LOCKS
#define _MD_LOCK(lock)                EnterCriticalSection(&((lock)->mutex))
#define _MD_TEST_AND_LOCK(lock)       (TryEnterCriticalSection(&((lock)->mutex))== FALSE)
#define _MD_UNLOCK(lock)              LeaveCriticalSection(&((lock)->mutex))
#else
#define _MD_LOCK(lock)                 \
    PR_BEGIN_MACRO \
    BOOL rv = TryEnterCriticalSection(&((lock)->mutex)); \
    if (rv == TRUE) { \
        InterlockedIncrement(&((lock)->hitcount)); \
    } else { \
        InterlockedIncrement(&((lock)->misscount)); \
        EnterCriticalSection(&((lock)->mutex)); \
    } \
    PR_END_MACRO
#define _MD_TEST_AND_LOCK(lock)       0  /* XXXMB */
#define _MD_UNLOCK(lock)              LeaveCriticalSection(&((lock)->mutex))
#endif
#define _PR_LOCK                      _MD_LOCK
#define _PR_UNLOCK                                _MD_UNLOCK

/* --- lock and cv waiting --- */
#define _MD_WAIT                      _PR_MD_WAIT
#define _MD_WAKEUP_WAITER             _PR_MD_WAKEUP_WAITER

   /* XXXMB- the IOQ stuff is certainly not working correctly yet. */
extern  struct _MDLock              _pr_ioq_lock;
#define _MD_IOQ_LOCK()                _MD_LOCK(&_pr_ioq_lock)
#define _MD_IOQ_UNLOCK()              _MD_UNLOCK(&_pr_ioq_lock)


/* --- Initialization stuff --- */
#define _MD_START_INTERRUPTS()
#define _MD_STOP_INTERRUPTS()
#define _MD_DISABLE_CLOCK_INTERRUPTS()
#define _MD_ENABLE_CLOCK_INTERRUPTS()
#define _MD_BLOCK_CLOCK_INTERRUPTS()
#define _MD_UNBLOCK_CLOCK_INTERRUPTS()
#define _MD_EARLY_INIT                _PR_MD_EARLY_INIT
#define _MD_FINAL_INIT()
#define _MD_INIT_CPUS()
#define _MD_INIT_RUNNING_CPU(cpu)

struct PRProcess;
struct PRProcessAttr;

/* --- Create a new process --- */
#define _MD_CREATE_PROCESS _PR_CreateWindowsProcess
extern struct PRProcess * _PR_CreateWindowsProcess(
    const char *path,
    char *const *argv,
    char *const *envp,
    const struct PRProcessAttr *attr
);

#define _MD_DETACH_PROCESS _PR_DetachWindowsProcess
extern PRStatus _PR_DetachWindowsProcess(struct PRProcess *process);

/* --- Wait for a child process to terminate --- */
#define _MD_WAIT_PROCESS _PR_WaitWindowsProcess
extern PRStatus _PR_WaitWindowsProcess(struct PRProcess *process, 
    PRInt32 *exitCode);

#define _MD_KILL_PROCESS _PR_KillWindowsProcess
extern PRStatus _PR_KillWindowsProcess(struct PRProcess *process);

/* --- User Threading stuff --- */
#define HAVE_FIBERS
#define _MD_CREATE_USER_THREAD            _PR_MD_CREATE_USER_THREAD
#define _MD_CREATE_PRIMORDIAL_USER_THREAD _PR_MD_CREATE_PRIMORDIAL_USER_THREAD
#define _MD_CLEANUP_BEFORE_EXIT           _PR_MD_CLEANUP_BEFORE_EXIT
#define _MD_EXIT                          _PR_MD_EXIT
#define _MD_INIT_CONTEXT                  _PR_MD_INIT_CONTEXT
#define _MD_SWITCH_CONTEXT                _PR_MD_SWITCH_CONTEXT
#define _MD_RESTORE_CONTEXT               _PR_MD_RESTORE_CONTEXT

/* --- Intervals --- */
#define _MD_INTERVAL_INIT                 _PR_MD_INTERVAL_INIT
#define _MD_GET_INTERVAL                  _PR_MD_GET_INTERVAL
#define _MD_INTERVAL_PER_SEC              _PR_MD_INTERVAL_PER_SEC
#define _MD_INTERVAL_PER_MILLISEC()       (_PR_MD_INTERVAL_PER_SEC() / 1000)
#define _MD_INTERVAL_PER_MICROSEC()       (_PR_MD_INTERVAL_PER_SEC() / 1000000)

/* --- Time --- */
extern void _PR_FileTimeToPRTime(const FILETIME *filetime, PRTime *prtm);

/* --- Native-Thread Specific Definitions ------------------------------- */

extern BOOL _pr_use_static_tls;

extern __declspec(thread) struct PRThread *_pr_current_fiber;
extern DWORD _pr_currentFiberIndex;

#define _MD_GET_ATTACHED_THREAD() \
    (_pr_use_static_tls ? _pr_current_fiber \
    : (PRThread *) TlsGetValue(_pr_currentFiberIndex))

extern struct PRThread * _MD_CURRENT_THREAD(void);

#define _MD_SET_CURRENT_THREAD(_thread) \
    PR_BEGIN_MACRO \
        if (_pr_use_static_tls) { \
            _pr_current_fiber = (_thread); \
        } else { \
            TlsSetValue(_pr_currentFiberIndex, (_thread)); \
        } \
    PR_END_MACRO

extern __declspec(thread) struct PRThread *_pr_fiber_last_run;
extern DWORD _pr_lastFiberIndex;

#define _MD_LAST_THREAD() \
    (_pr_use_static_tls ? _pr_fiber_last_run \
    : (PRThread *) TlsGetValue(_pr_lastFiberIndex))

#define _MD_SET_LAST_THREAD(_thread) \
    PR_BEGIN_MACRO \
        if (_pr_use_static_tls) { \
            _pr_fiber_last_run = (_thread); \
        } else { \
            TlsSetValue(_pr_lastFiberIndex, (_thread)); \
        } \
    PR_END_MACRO

extern __declspec(thread) struct _PRCPU *_pr_current_cpu;
extern DWORD _pr_currentCPUIndex;

#define _MD_CURRENT_CPU() \
    (_pr_use_static_tls ? _pr_current_cpu \
    : (struct _PRCPU *) TlsGetValue(_pr_currentCPUIndex))

#define _MD_SET_CURRENT_CPU(_cpu) \
    PR_BEGIN_MACRO \
        if (_pr_use_static_tls) { \
            _pr_current_cpu = (_cpu); \
        } else { \
            TlsSetValue(_pr_currentCPUIndex, (_cpu)); \
        } \
    PR_END_MACRO

extern __declspec(thread) PRUintn _pr_ints_off;
extern DWORD _pr_intsOffIndex;

#define _MD_GET_INTSOFF() \
    (_pr_use_static_tls ? _pr_ints_off \
    : (PRUintn) TlsGetValue(_pr_intsOffIndex))

#define _MD_SET_INTSOFF(_val) \
    PR_BEGIN_MACRO \
        if (_pr_use_static_tls) { \
            _pr_ints_off = (_val); \
        } else { \
            TlsSetValue(_pr_intsOffIndex, (LPVOID) (_val)); \
        } \
    PR_END_MACRO

/* --- Initialization stuff --- */
#define _MD_INIT_LOCKS()

/* --- Stack stuff --- */
#define _MD_INIT_STACK(stack, redzone)
#define _MD_CLEAR_STACK(stack)

/* --- Memory-mapped files stuff --- */

struct _MDFileMap {
    HANDLE hFileMap;
    DWORD dwAccess;
};

extern PRStatus _MD_CreateFileMap(struct PRFileMap *fmap, PRInt64 size);
#define _MD_CREATE_FILE_MAP _MD_CreateFileMap

extern PRInt32 _MD_GetMemMapAlignment(void);
#define _MD_GET_MEM_MAP_ALIGNMENT _MD_GetMemMapAlignment

extern void * _MD_MemMap(struct PRFileMap *fmap, PRInt64 offset,
        PRUint32 len);
#define _MD_MEM_MAP _MD_MemMap

extern PRStatus _MD_MemUnmap(void *addr, PRUint32 size);
#define _MD_MEM_UNMAP _MD_MemUnmap

extern PRStatus _MD_CloseFileMap(struct PRFileMap *fmap);
#define _MD_CLOSE_FILE_MAP _MD_CloseFileMap

/* --- Named semaphores stuff --- */
#define _PR_HAVE_NAMED_SEMAPHORES
#define _MD_OPEN_SEMAPHORE            _PR_MD_OPEN_SEMAPHORE
#define _MD_WAIT_SEMAPHORE            _PR_MD_WAIT_SEMAPHORE
#define _MD_POST_SEMAPHORE            _PR_MD_POST_SEMAPHORE
#define _MD_CLOSE_SEMAPHORE           _PR_MD_CLOSE_SEMAPHORE
#define _MD_DELETE_SEMAPHORE(name)    PR_SUCCESS  /* no op */

#endif /* nspr_win32_defs_h___ */

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