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      1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /*
      3  * The contents of this file are subject to the Mozilla Public
      4  * License Version 1.1 (the "License"); you may not use this file
      5  * except in compliance with the License. You may obtain a copy of
      6  * the License at http://www.mozilla.org/MPL/
      7  *
      8  * Software distributed under the License is distributed on an "AS
      9  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
     10  * implied. See the License for the specific language governing
     11  * rights and limitations under the License.
     12  *
     13  * The Original Code is the Netscape Portable Runtime (NSPR).
     14  *
     15  * The Initial Developer of the Original Code is Netscape
     16  * Communications Corporation.  Portions created by Netscape are
     17  * Copyright (C) 1998-2000 Netscape Communications Corporation.  All
     18  * Rights Reserved.
     19  *
     20  * Contributor(s):
     21  *
     22  * Alternatively, the contents of this file may be used under the
     23  * terms of the GNU General Public License Version 2 or later (the
     24  * "GPL"), in which case the provisions of the GPL are applicable
     25  * instead of those above.  If you wish to allow use of your
     26  * version of this file only under the terms of the GPL and not to
     27  * allow others to use your version of this file under the MPL,
     28  * indicate your decision by deleting the provisions above and
     29  * replace them with the notice and other provisions required by
     30  * the GPL.  If you do not delete the provisions above, a recipient
     31  * may use your version of this file under either the MPL or the
     32  * GPL.
     33  */
     34 
     35 #ifndef nspr_win32_defs_h___
     36 #define nspr_win32_defs_h___
     37 
     38 /* Need to force service-pack 3 extensions to be defined by
     39 ** setting _WIN32_WINNT to NT 4.0 for winsock.h, winbase.h, winnt.h.
     40 */
     41 #ifndef  _WIN32_WINNT
     42     #define _WIN32_WINNT 0x0400
     43 #elif   (_WIN32_WINNT < 0x0400)
     44     #undef  _WIN32_WINNT
     45     #define _WIN32_WINNT 0x0400
     46 #endif /* _WIN32_WINNT */
     47 
     48 #include <windows.h>
     49 #include <winsock.h>
     50 #ifdef __MINGW32__
     51 #include <mswsock.h>
     52 #endif
     53 #include <errno.h>
     54 
     55 #include "prio.h"
     56 #include "prclist.h"
     57 
     58 /*
     59  * Internal configuration macros
     60  */
     61 
     62 #define PR_LINKER_ARCH      "win32"
     63 #define _PR_SI_SYSNAME        "WINNT"
     64 #define _PR_SI_ARCHITECTURE   "x86"    /* XXXMB hardcode for now */
     65 
     66 #define HAVE_DLL
     67 #define HAVE_CUSTOM_USER_THREADS
     68 #define HAVE_THREAD_AFFINITY
     69 #define _PR_HAVE_GETADDRINFO
     70 #define _PR_INET6_PROBE
     71 #ifndef _PR_INET6
     72 #define AF_INET6 23
     73 /* newer ws2tcpip.h provides these */
     74 #ifndef AI_CANONNAME
     75 #define AI_CANONNAME 0x2
     76 struct addrinfo {
     77     int ai_flags;
     78     int ai_family;
     79     int ai_socktype;
     80     int ai_protocol;
     81     size_t ai_addrlen;
     82     char *ai_canonname;
     83     struct sockaddr *ai_addr;
     84     struct addrinfo *ai_next;
     85 };
     86 #endif
     87 #endif
     88 #define _PR_HAVE_THREADSAFE_GETHOST
     89 #define _PR_HAVE_ATOMIC_OPS
     90 #define _PR_HAVE_ATOMIC_CAS
     91 #define PR_HAVE_WIN32_NAMED_SHARED_MEMORY
     92 #define _PR_HAVE_PEEK_BUFFER
     93 #define _PR_PEEK_BUFFER_MAX (32 * 1024)
     94 #define _PR_FD_NEED_EMULATE_MSG_PEEK(fd) \
     95     (!(fd)->secret->nonblocking && (fd)->secret->inheritable != _PR_TRI_TRUE)
     96 
     97 /* --- Common User-Thread/Native-Thread Definitions --------------------- */
     98 
     99 /* --- Globals --- */
    100 extern struct PRLock                      *_pr_schedLock;
    101 
    102 /* --- Typedefs --- */
    103 typedef void (*FiberFunc)(void *);
    104 
    105 #define PR_NUM_GCREGS           8
    106 typedef PRInt32	                PR_CONTEXT_TYPE[PR_NUM_GCREGS];
    107 #define GC_VMBASE               0x40000000
    108 #define GC_VMLIMIT              0x00FFFFFF
    109 
    110 #define _MD_MAGIC_THREAD	0x22222222
    111 #define _MD_MAGIC_THREADSTACK	0x33333333
    112 #define _MD_MAGIC_SEGMENT	0x44444444
    113 #define _MD_MAGIC_DIR		0x55555555
    114 
    115 struct _MDCPU {
    116     int              unused;
    117 };
    118 
    119 enum _MDIOModel {
    120     _MD_BlockingIO = 0x38,
    121     _MD_MultiWaitIO = 0x49
    122 };
    123 
    124 typedef struct _MDOverlapped {
    125     OVERLAPPED overlapped;              /* Used for async I/O */
    126 
    127     enum _MDIOModel ioModel;            /* The I/O model to implement
    128                                          * using overlapped I/O.
    129                                          */
    130     union {
    131         struct _MDThread *mdThread;     /* For blocking I/O, this structure
    132                                          * is embedded in the _MDThread
    133                                          * structure.
    134                                          */
    135         struct {
    136             PRCList links;              /* for group->io_ready list */
    137             struct PRRecvWait *desc;    /* For multiwait I/O, this structure
    138                                          * is associated with a PRRecvWait
    139                                          * structure.
    140                                          */
    141             struct PRWaitGroup *group;
    142             struct TimerEvent *timer;
    143             DWORD error;
    144         } mw;
    145     } data;
    146 } _MDOverlapped;
    147 
    148 struct _MDThread {
    149         /* The overlapped structure must be first! */
    150     struct _MDOverlapped overlapped;    /* Used for async IO for this thread */
    151     void            *acceptex_buf;      /* Used for AcceptEx() */
    152     TRANSMIT_FILE_BUFFERS *xmit_bufs;   /* Used for TransmitFile() */
    153     HANDLE           blocked_sema;      /* Threads block on this when waiting
    154                                          * for IO or CondVar.
    155                                          */
    156     PRInt32          blocked_io_status; /* Status of the completed IO */
    157     PRInt32          blocked_io_bytes;  /* Bytes transferred for completed IO */
    158     PRInt32          blocked_io_error;  /* Save error if status is FALSE */
    159     HANDLE           handle;
    160     PRUint32         id;
    161     void            *sp;                /* only valid when suspended */
    162     PRUint32         magic;             /* for debugging */
    163     PR_CONTEXT_TYPE  gcContext;         /* Thread context for GC */
    164 	struct _PRCPU    *thr_bound_cpu;		/* thread bound to cpu */
    165 	PRBool   		 interrupt_disabled;/* thread cannot be interrupted */
    166 	HANDLE 			 thr_event;			/* For native-threads-only support,
    167 											thread blocks on this event		*/
    168 
    169     /* The following are used only if this is a fiber */
    170     void            *fiber_id;          /* flag whether or not this is a fiber*/
    171     FiberFunc        fiber_fn;          /* main fiber routine */
    172     void            *fiber_arg;         /* arg to main fiber routine */
    173     PRUint32         fiber_stacksize;   /* stacksize for fiber */
    174     PRInt32          fiber_last_error;  /* last error for the fiber */
    175     void (*start)(void *);              /* used by _PR_MD_CREATE_THREAD to
    176                                          * pass its 'start' argument to
    177                                          * pr_root. */
    178 };
    179 
    180 struct _MDThreadStack {
    181     PRUint32           magic;          /* for debugging */
    182 };
    183 
    184 struct _MDSegment {
    185     PRUint32           magic;          /* for debugging */
    186 };
    187 
    188 #undef PROFILE_LOCKS
    189 
    190 struct _MDLock {
    191     CRITICAL_SECTION mutex;          /* this is recursive on NT */
    192 #ifdef PROFILE_LOCKS
    193     PRInt32 hitcount;
    194     PRInt32 misscount;
    195 #endif
    196 };
    197 
    198 struct _MDDir {
    199     HANDLE           d_hdl;
    200     WIN32_FIND_DATA  d_entry;
    201     PRBool           firstEntry;     /* Is this the entry returned
    202                                       * by FindFirstFile()? */
    203     PRUint32         magic;          /* for debugging */
    204 };
    205 
    206 struct _MDCVar {
    207     PRUint32         unused;
    208 };
    209 
    210 struct _MDSemaphore {
    211     HANDLE           sem;
    212 };
    213 
    214 struct _MDFileDesc {
    215     PRInt32 osfd;    /* The osfd can come from one of three spaces:
    216                       * - For stdin, stdout, and stderr, we are using
    217                       *   the libc file handle (0, 1, 2), which is an int.
    218                       * - For files and pipes, we are using Win32 HANDLE,
    219                       *   which is a void*.
    220                       * - For sockets, we are using Winsock SOCKET, which
    221                       *   is a u_int.
    222                       */
    223     PRBool io_model_committed;  /* The io model (blocking or nonblocking)
    224                                  * for this osfd has been committed and
    225                                  * cannot be changed.  The osfd has been
    226                                  * either associated with the io
    227                                  * completion port or made nonblocking. */
    228     PRBool sync_file_io;        /* Use synchronous file I/O on the osfd
    229                                  * (a file handle) */
    230     PRBool accepted_socket;     /* Is this an accepted socket (on the
    231                                  * server side)? */
    232     PRNetAddr peer_addr;        /* If this is an accepted socket, cache
    233                                  * the peer's address returned by
    234                                  * AcceptEx().  This is to work around
    235                                  * the bug that getpeername() on an
    236                                  * socket accepted by AcceptEx() returns
    237                                  * an all-zero net address. */
    238 };
    239 
    240 struct _MDProcess {
    241     HANDLE handle;
    242     DWORD id;
    243 };
    244 
    245 
    246 /* --- Misc stuff --- */
    247 #define _MD_GET_SP(thread)            (thread)->md.gcContext[6]
    248 
    249 /* --- NT security stuff --- */
    250 
    251 extern void _PR_NT_InitSids(void);
    252 extern void _PR_NT_FreeSids(void);
    253 extern PRStatus _PR_NT_MakeSecurityDescriptorACL(
    254     PRIntn mode,
    255     DWORD accessTable[],
    256     PSECURITY_DESCRIPTOR *resultSD,
    257     PACL *resultACL
    258 );
    259 extern void _PR_NT_FreeSecurityDescriptorACL(
    260     PSECURITY_DESCRIPTOR pSD, PACL pACL);
    261 
    262 /* --- IO stuff --- */
    263 
    264 extern PRInt32 _md_Associate(HANDLE);
    265 extern PRInt32 _PR_MD_CLOSE(PRInt32 osfd, PRBool socket);
    266 
    267 #define _MD_OPEN                      _PR_MD_OPEN
    268 #define _MD_OPEN_FILE                 _PR_MD_OPEN_FILE
    269 #define _MD_READ                      _PR_MD_READ
    270 #define _MD_WRITE                     _PR_MD_WRITE
    271 #define _MD_WRITEV                    _PR_MD_WRITEV
    272 #define _MD_LSEEK                     _PR_MD_LSEEK
    273 #define _MD_LSEEK64                   _PR_MD_LSEEK64
    274 #define _MD_CLOSE_FILE(f)             _PR_MD_CLOSE(f, PR_FALSE)
    275 #define _MD_GETFILEINFO               _PR_MD_GETFILEINFO
    276 #define _MD_GETFILEINFO64             _PR_MD_GETFILEINFO64
    277 #define _MD_GETOPENFILEINFO           _PR_MD_GETOPENFILEINFO
    278 #define _MD_GETOPENFILEINFO64         _PR_MD_GETOPENFILEINFO64
    279 #define _MD_STAT                      _PR_MD_STAT
    280 #define _MD_RENAME                    _PR_MD_RENAME
    281 #define _MD_ACCESS                    _PR_MD_ACCESS
    282 #define _MD_DELETE                    _PR_MD_DELETE
    283 #define _MD_MKDIR                     _PR_MD_MKDIR
    284 #define _MD_MAKE_DIR                  _PR_MD_MAKE_DIR
    285 #define _MD_RMDIR                     _PR_MD_RMDIR
    286 #define _MD_LOCKFILE                  _PR_MD_LOCKFILE
    287 #define _MD_TLOCKFILE                 _PR_MD_TLOCKFILE
    288 #define _MD_UNLOCKFILE                _PR_MD_UNLOCKFILE
    289 
    290 /* --- Socket IO stuff --- */
    291 #define _MD_GET_SOCKET_ERROR()    WSAGetLastError()
    292 #define _MD_SET_SOCKET_ERROR(_err) WSASetLastError(_err)
    293 
    294 #define _MD_INIT_FILEDESC(fd)
    295 #define _MD_MAKE_NONBLOCK             _PR_MD_MAKE_NONBLOCK
    296 #define _MD_INIT_FD_INHERITABLE       _PR_MD_INIT_FD_INHERITABLE
    297 #define _MD_QUERY_FD_INHERITABLE      _PR_MD_QUERY_FD_INHERITABLE
    298 #define _MD_SHUTDOWN                  _PR_MD_SHUTDOWN
    299 #define _MD_LISTEN                    _PR_MD_LISTEN
    300 #define _MD_CLOSE_SOCKET(s)           _PR_MD_CLOSE(s, PR_TRUE)
    301 #define _MD_SENDTO                    _PR_MD_SENDTO
    302 #define _MD_RECVFROM                  _PR_MD_RECVFROM
    303 #define _MD_SOCKETPAIR(s, type, proto, sv) -1
    304 #define _MD_GETSOCKNAME               _PR_MD_GETSOCKNAME
    305 #define _MD_GETPEERNAME               _PR_MD_GETPEERNAME
    306 #define _MD_GETSOCKOPT                _PR_MD_GETSOCKOPT
    307 #define _MD_SETSOCKOPT                _PR_MD_SETSOCKOPT
    308 #define _MD_SELECT                    select
    309 extern int _PR_NTFiberSafeSelect(int, fd_set *, fd_set *, fd_set *,
    310     const struct timeval *);
    311 #define _MD_FSYNC                     _PR_MD_FSYNC
    312 #define _MD_SOCKETAVAILABLE           _PR_MD_SOCKETAVAILABLE
    313 #define _MD_PIPEAVAILABLE             _PR_MD_PIPEAVAILABLE
    314 #define _MD_SET_FD_INHERITABLE        _PR_MD_SET_FD_INHERITABLE
    315 
    316 #define _MD_INIT_ATOMIC()
    317 #if defined(_M_IX86) || defined(_X86_)
    318 #define _MD_ATOMIC_INCREMENT          _PR_MD_ATOMIC_INCREMENT
    319 #define _MD_ATOMIC_ADD          	  _PR_MD_ATOMIC_ADD
    320 #define _MD_ATOMIC_DECREMENT          _PR_MD_ATOMIC_DECREMENT
    321 #else /* non-x86 processors */
    322 #define _MD_ATOMIC_INCREMENT(x)       InterlockedIncrement((PLONG)x)
    323 #define _MD_ATOMIC_ADD(ptr,val)    (InterlockedExchangeAdd((PLONG)ptr, (LONG)val) + val)
    324 #define _MD_ATOMIC_DECREMENT(x)       InterlockedDecrement((PLONG)x)
    325 #endif /* x86 */
    326 #define _MD_ATOMIC_SET(x,y)           InterlockedExchange((PLONG)x, (LONG)y)
    327 
    328 #define _MD_INIT_IO                   _PR_MD_INIT_IO
    329 #define _MD_SOCKET                    _PR_MD_SOCKET
    330 #define _MD_CONNECT                   _PR_MD_CONNECT
    331 
    332 #define _MD_ACCEPT(s, a, l, to)       \
    333         _MD_FAST_ACCEPT(s, a, l, to, PR_FALSE, NULL, NULL)
    334 #define _MD_FAST_ACCEPT(s, a, l, to, fast, cb, cba) \
    335         _PR_MD_FAST_ACCEPT(s, a, l, to, fast, cb, cba)
    336 #define _MD_ACCEPT_READ(s, ns, ra, buf, l, t) \
    337         _MD_FAST_ACCEPT_READ(s, ns, ra, buf, l, t, PR_FALSE, NULL, NULL)
    338 #define _MD_FAST_ACCEPT_READ(s, ns, ra, buf, l, t, fast, cb, cba) \
    339         _PR_MD_FAST_ACCEPT_READ(s, ns, ra, buf, l, t, fast, cb, cba)
    340 #define _MD_UPDATE_ACCEPT_CONTEXT     _PR_MD_UPDATE_ACCEPT_CONTEXT
    341 
    342 #define _MD_BIND                      _PR_MD_BIND
    343 #define _MD_RECV                      _PR_MD_RECV
    344 #define _MD_SEND                      _PR_MD_SEND
    345 #define _MD_SENDFILE              	  _PR_MD_SENDFILE
    346 #define _MD_PR_POLL                   _PR_MD_PR_POLL
    347 
    348 /* --- Scheduler stuff --- */
    349 #define _MD_PAUSE_CPU                   _PR_MD_PAUSE_CPU
    350 
    351 /* --- DIR stuff --- */
    352 #define PR_DIRECTORY_SEPARATOR        '\\'
    353 #define PR_DIRECTORY_SEPARATOR_STR    "\\"
    354 #define PR_PATH_SEPARATOR		';'
    355 #define PR_PATH_SEPARATOR_STR		";"
    356 #define _MD_ERRNO()                   GetLastError()
    357 #define _MD_OPEN_DIR                  _PR_MD_OPEN_DIR
    358 #define _MD_CLOSE_DIR                 _PR_MD_CLOSE_DIR
    359 #define _MD_READ_DIR                  _PR_MD_READ_DIR
    360 
    361 /* --- Segment stuff --- */
    362 #define _MD_INIT_SEGS()
    363 #define _MD_ALLOC_SEGMENT(seg, size, vaddr)   0
    364 #define _MD_FREE_SEGMENT(seg)
    365 
    366 /* --- Environment Stuff --- */
    367 #define _MD_GET_ENV                 _PR_MD_GET_ENV
    368 #define _MD_PUT_ENV                 _PR_MD_PUT_ENV
    369 
    370 /* --- Threading Stuff --- */
    371 #define _MD_DEFAULT_STACK_SIZE            0
    372 #define _MD_INIT_THREAD             _PR_MD_INIT_THREAD
    373 #define _MD_INIT_ATTACHED_THREAD    _PR_MD_INIT_THREAD
    374 #define _MD_CREATE_THREAD           _PR_MD_CREATE_THREAD
    375 #define _MD_JOIN_THREAD             _PR_MD_JOIN_THREAD
    376 #define _MD_END_THREAD              _PR_MD_END_THREAD
    377 #define _MD_YIELD                   _PR_MD_YIELD
    378 #define _MD_SET_PRIORITY            _PR_MD_SET_PRIORITY
    379 #define _MD_CLEAN_THREAD            _PR_MD_CLEAN_THREAD
    380 #define _MD_SETTHREADAFFINITYMASK   _PR_MD_SETTHREADAFFINITYMASK
    381 #define _MD_GETTHREADAFFINITYMASK   _PR_MD_GETTHREADAFFINITYMASK
    382 #define _MD_EXIT_THREAD             _PR_MD_EXIT_THREAD
    383 #define _MD_SUSPEND_THREAD          _PR_MD_SUSPEND_THREAD
    384 #define _MD_RESUME_THREAD           _PR_MD_RESUME_THREAD
    385 #define _MD_SUSPEND_CPU             _PR_MD_SUSPEND_CPU
    386 #define _MD_RESUME_CPU              _PR_MD_RESUME_CPU
    387 #define _MD_BEGIN_SUSPEND_ALL()
    388 #define _MD_BEGIN_RESUME_ALL()
    389 #define _MD_END_SUSPEND_ALL()
    390 #define _MD_END_RESUME_ALL()
    391 
    392 extern void _PR_Unblock_IO_Wait(PRThread *thr);
    393 
    394 /* --- Lock stuff --- */
    395 #define _MD_NEW_LOCK(lock)            (InitializeCriticalSection(&((lock)->mutex)),PR_SUCCESS)
    396 #define _MD_FREE_LOCK(lock)           DeleteCriticalSection(&((lock)->mutex))
    397 #ifndef PROFILE_LOCKS
    398 #define _MD_LOCK(lock)                EnterCriticalSection(&((lock)->mutex))
    399 #define _MD_TEST_AND_LOCK(lock)       (TryEnterCriticalSection(&((lock)->mutex))== FALSE)
    400 #define _MD_UNLOCK(lock)              LeaveCriticalSection(&((lock)->mutex))
    401 #else
    402 #define _MD_LOCK(lock)                 \
    403     PR_BEGIN_MACRO \
    404     BOOL rv = TryEnterCriticalSection(&((lock)->mutex)); \
    405     if (rv == TRUE) { \
    406         InterlockedIncrement(&((lock)->hitcount)); \
    407     } else { \
    408         InterlockedIncrement(&((lock)->misscount)); \
    409         EnterCriticalSection(&((lock)->mutex)); \
    410     } \
    411     PR_END_MACRO
    412 #define _MD_TEST_AND_LOCK(lock)       0  /* XXXMB */
    413 #define _MD_UNLOCK(lock)              LeaveCriticalSection(&((lock)->mutex))
    414 #endif
    415 #define _PR_LOCK                      _MD_LOCK
    416 #define _PR_UNLOCK					  _MD_UNLOCK
    417 
    418 /* --- lock and cv waiting --- */
    419 #define _MD_WAIT                      _PR_MD_WAIT
    420 #define _MD_WAKEUP_WAITER             _PR_MD_WAKEUP_WAITER
    421 
    422    /* XXXMB- the IOQ stuff is certainly not working correctly yet. */
    423 extern  struct _MDLock              _pr_ioq_lock;
    424 #define _MD_IOQ_LOCK()                _MD_LOCK(&_pr_ioq_lock)
    425 #define _MD_IOQ_UNLOCK()              _MD_UNLOCK(&_pr_ioq_lock)
    426 
    427 
    428 /* --- Initialization stuff --- */
    429 #define _MD_START_INTERRUPTS()
    430 #define _MD_STOP_INTERRUPTS()
    431 #define _MD_DISABLE_CLOCK_INTERRUPTS()
    432 #define _MD_ENABLE_CLOCK_INTERRUPTS()
    433 #define _MD_BLOCK_CLOCK_INTERRUPTS()
    434 #define _MD_UNBLOCK_CLOCK_INTERRUPTS()
    435 #define _MD_EARLY_INIT                _PR_MD_EARLY_INIT
    436 #define _MD_FINAL_INIT()
    437 #define _MD_INIT_CPUS()
    438 #define _MD_INIT_RUNNING_CPU(cpu)
    439 
    440 struct PRProcess;
    441 struct PRProcessAttr;
    442 
    443 /* --- Create a new process --- */
    444 #define _MD_CREATE_PROCESS _PR_CreateWindowsProcess
    445 extern struct PRProcess * _PR_CreateWindowsProcess(
    446     const char *path,
    447     char *const *argv,
    448     char *const *envp,
    449     const struct PRProcessAttr *attr
    450 );
    451 
    452 #define _MD_DETACH_PROCESS _PR_DetachWindowsProcess
    453 extern PRStatus _PR_DetachWindowsProcess(struct PRProcess *process);
    454 
    455 /* --- Wait for a child process to terminate --- */
    456 #define _MD_WAIT_PROCESS _PR_WaitWindowsProcess
    457 extern PRStatus _PR_WaitWindowsProcess(struct PRProcess *process,
    458     PRInt32 *exitCode);
    459 
    460 #define _MD_KILL_PROCESS _PR_KillWindowsProcess
    461 extern PRStatus _PR_KillWindowsProcess(struct PRProcess *process);
    462 
    463 /* --- User Threading stuff --- */
    464 #define HAVE_FIBERS
    465 #define _MD_CREATE_USER_THREAD            _PR_MD_CREATE_USER_THREAD
    466 #define _MD_CREATE_PRIMORDIAL_USER_THREAD _PR_MD_CREATE_PRIMORDIAL_USER_THREAD
    467 #define _MD_CLEANUP_BEFORE_EXIT           _PR_MD_CLEANUP_BEFORE_EXIT
    468 #define _MD_EXIT                          _PR_MD_EXIT
    469 #define _MD_INIT_CONTEXT                  _PR_MD_INIT_CONTEXT
    470 #define _MD_SWITCH_CONTEXT                _PR_MD_SWITCH_CONTEXT
    471 #define _MD_RESTORE_CONTEXT               _PR_MD_RESTORE_CONTEXT
    472 
    473 /* --- Intervals --- */
    474 #define _MD_INTERVAL_INIT                 _PR_MD_INTERVAL_INIT
    475 #define _MD_GET_INTERVAL                  _PR_MD_GET_INTERVAL
    476 #define _MD_INTERVAL_PER_SEC              _PR_MD_INTERVAL_PER_SEC
    477 #define _MD_INTERVAL_PER_MILLISEC()       (_PR_MD_INTERVAL_PER_SEC() / 1000)
    478 #define _MD_INTERVAL_PER_MICROSEC()       (_PR_MD_INTERVAL_PER_SEC() / 1000000)
    479 
    480 /* --- Time --- */
    481 extern void _PR_FileTimeToPRTime(const FILETIME *filetime, PRTime *prtm);
    482 
    483 /* --- Native-Thread Specific Definitions ------------------------------- */
    484 
    485 extern BOOL _pr_use_static_tls;
    486 
    487 extern __declspec(thread) struct PRThread *_pr_current_fiber;
    488 extern DWORD _pr_currentFiberIndex;
    489 
    490 #define _MD_GET_ATTACHED_THREAD() \
    491     (_pr_use_static_tls ? _pr_current_fiber \
    492     : (PRThread *) TlsGetValue(_pr_currentFiberIndex))
    493 
    494 extern struct PRThread * _MD_CURRENT_THREAD(void);
    495 
    496 #define _MD_SET_CURRENT_THREAD(_thread) \
    497     PR_BEGIN_MACRO \
    498         if (_pr_use_static_tls) { \
    499             _pr_current_fiber = (_thread); \
    500         } else { \
    501             TlsSetValue(_pr_currentFiberIndex, (_thread)); \
    502         } \
    503     PR_END_MACRO
    504 
    505 extern __declspec(thread) struct PRThread *_pr_fiber_last_run;
    506 extern DWORD _pr_lastFiberIndex;
    507 
    508 #define _MD_LAST_THREAD() \
    509     (_pr_use_static_tls ? _pr_fiber_last_run \
    510     : (PRThread *) TlsGetValue(_pr_lastFiberIndex))
    511 
    512 #define _MD_SET_LAST_THREAD(_thread) \
    513     PR_BEGIN_MACRO \
    514         if (_pr_use_static_tls) { \
    515             _pr_fiber_last_run = (_thread); \
    516         } else { \
    517             TlsSetValue(_pr_lastFiberIndex, (_thread)); \
    518         } \
    519     PR_END_MACRO
    520 
    521 extern __declspec(thread) struct _PRCPU *_pr_current_cpu;
    522 extern DWORD _pr_currentCPUIndex;
    523 
    524 #define _MD_CURRENT_CPU() \
    525     (_pr_use_static_tls ? _pr_current_cpu \
    526     : (struct _PRCPU *) TlsGetValue(_pr_currentCPUIndex))
    527 
    528 #define _MD_SET_CURRENT_CPU(_cpu) \
    529     PR_BEGIN_MACRO \
    530         if (_pr_use_static_tls) { \
    531             _pr_current_cpu = (_cpu); \
    532         } else { \
    533             TlsSetValue(_pr_currentCPUIndex, (_cpu)); \
    534         } \
    535     PR_END_MACRO
    536 
    537 extern __declspec(thread) PRUintn _pr_ints_off;
    538 extern DWORD _pr_intsOffIndex;
    539 
    540 #define _MD_GET_INTSOFF() \
    541     (_pr_use_static_tls ? _pr_ints_off \
    542     : (PRUintn) TlsGetValue(_pr_intsOffIndex))
    543 
    544 #define _MD_SET_INTSOFF(_val) \
    545     PR_BEGIN_MACRO \
    546         if (_pr_use_static_tls) { \
    547             _pr_ints_off = (_val); \
    548         } else { \
    549             TlsSetValue(_pr_intsOffIndex, (LPVOID) (_val)); \
    550         } \
    551     PR_END_MACRO
    552 
    553 /* --- Initialization stuff --- */
    554 #define _MD_INIT_LOCKS()
    555 
    556 /* --- Stack stuff --- */
    557 #define _MD_INIT_STACK(stack, redzone)
    558 #define _MD_CLEAR_STACK(stack)
    559 
    560 /* --- Memory-mapped files stuff --- */
    561 
    562 struct _MDFileMap {
    563     HANDLE hFileMap;
    564     DWORD dwAccess;
    565 };
    566 
    567 extern PRStatus _MD_CreateFileMap(struct PRFileMap *fmap, PRInt64 size);
    568 #define _MD_CREATE_FILE_MAP _MD_CreateFileMap
    569 
    570 extern PRInt32 _MD_GetMemMapAlignment(void);
    571 #define _MD_GET_MEM_MAP_ALIGNMENT _MD_GetMemMapAlignment
    572 
    573 extern void * _MD_MemMap(struct PRFileMap *fmap, PRInt64 offset,
    574         PRUint32 len);
    575 #define _MD_MEM_MAP _MD_MemMap
    576 
    577 extern PRStatus _MD_MemUnmap(void *addr, PRUint32 size);
    578 #define _MD_MEM_UNMAP _MD_MemUnmap
    579 
    580 extern PRStatus _MD_CloseFileMap(struct PRFileMap *fmap);
    581 #define _MD_CLOSE_FILE_MAP _MD_CloseFileMap
    582 
    583 /* --- Named semaphores stuff --- */
    584 #define _PR_HAVE_NAMED_SEMAPHORES
    585 #define _MD_OPEN_SEMAPHORE            _PR_MD_OPEN_SEMAPHORE
    586 #define _MD_WAIT_SEMAPHORE            _PR_MD_WAIT_SEMAPHORE
    587 #define _MD_POST_SEMAPHORE            _PR_MD_POST_SEMAPHORE
    588 #define _MD_CLOSE_SEMAPHORE           _PR_MD_CLOSE_SEMAPHORE
    589 #define _MD_DELETE_SEMAPHORE(name)    PR_SUCCESS  /* no op */
    590 
    591 #endif /* nspr_win32_defs_h___ */
    592