1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* This Source Code Form is subject to the terms of the Mozilla Public
3  * License, v. 2.0. If a copy of the MPL was not distributed with this
4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
5 
6 #ifndef nspr_win32_defs_h___
7 #define nspr_win32_defs_h___
8 
9 /* Need to force service-pack 3 extensions to be defined by
10 ** setting _WIN32_WINNT to NT 4.0 for winsock.h, winbase.h, winnt.h.
11 */
12 #ifndef  _WIN32_WINNT
13     #define _WIN32_WINNT 0x0400
14 #elif   (_WIN32_WINNT < 0x0400)
15     #undef  _WIN32_WINNT
16     #define _WIN32_WINNT 0x0400
17 #endif /* _WIN32_WINNT */
18 
19 #include <windows.h>
20 #include <winsock.h>
21 #ifdef __MINGW32__
22 #include <mswsock.h>
23 #endif
24 #include <errno.h>
25 
26 #include "prio.h"
27 #include "prclist.h"
28 
29 /*
30  * Internal configuration macros
31  */
32 
33 #define PR_LINKER_ARCH      "win32"
34 #define _PR_SI_SYSNAME        "WINNT"
35 #if defined(_M_IX86) || defined(_X86_)
36 #define _PR_SI_ARCHITECTURE   "x86"
37 #elif defined(_M_X64) || defined(_M_AMD64) || defined(_AMD64_)
38 #define _PR_SI_ARCHITECTURE   "x86-64"
39 #elif defined(_M_IA64) || defined(_IA64_)
40 #define _PR_SI_ARCHITECTURE   "ia64"
41 #else
42 #error unknown processor architecture
43 #endif
44 
45 #define HAVE_DLL
46 #define HAVE_CUSTOM_USER_THREADS
47 #define HAVE_THREAD_AFFINITY
48 #define _PR_HAVE_GETADDRINFO
49 #define _PR_INET6_PROBE
50 #ifndef _PR_INET6
51 #define AF_INET6 23
52 /* newer ws2tcpip.h provides these */
53 #ifndef AI_CANONNAME
54 #define AI_CANONNAME 0x2
55 #define AI_NUMERICHOST 0x4
56 #define NI_NUMERICHOST 0x02
57 struct addrinfo {
58     int ai_flags;
59     int ai_family;
60     int ai_socktype;
61     int ai_protocol;
62     size_t ai_addrlen;
63     char *ai_canonname;
64     struct sockaddr *ai_addr;
65     struct addrinfo *ai_next;
66 };
67 #endif
68 #define _PR_HAVE_MD_SOCKADDR_IN6
69 /* isomorphic to struct in6_addr on Windows */
70 struct _md_in6_addr {
71     union {
72         PRUint8  _S6_u8[16];
73         PRUint16 _S6_u16[8];
74     } _S6_un;
75 };
76 /* isomorphic to struct sockaddr_in6 on Windows */
77 struct _md_sockaddr_in6 {
78     PRInt16 sin6_family;
79     PRUint16 sin6_port;
80     PRUint32 sin6_flowinfo;
81     struct _md_in6_addr sin6_addr;
82     PRUint32 sin6_scope_id;
83 };
84 #endif
85 #define _PR_HAVE_THREADSAFE_GETHOST
86 #define _PR_HAVE_ATOMIC_OPS
87 #if defined(_M_IX86) || defined(_X86_)
88 #define _PR_HAVE_ATOMIC_CAS
89 #endif
90 #define PR_HAVE_WIN32_NAMED_SHARED_MEMORY
91 #define _PR_HAVE_PEEK_BUFFER
92 #define _PR_PEEK_BUFFER_MAX (32 * 1024)
93 #define _PR_FD_NEED_EMULATE_MSG_PEEK(fd) \
94     (!(fd)->secret->nonblocking && (fd)->secret->inheritable != _PR_TRI_TRUE)
95 #define _PR_NEED_SECRET_AF
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     PROsfd 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(PROsfd 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_SET_CURRENT_THREAD_NAME _PR_MD_SET_CURRENT_THREAD_NAME
380 #define _MD_CLEAN_THREAD            _PR_MD_CLEAN_THREAD
381 #define _MD_SETTHREADAFFINITYMASK   _PR_MD_SETTHREADAFFINITYMASK
382 #define _MD_GETTHREADAFFINITYMASK   _PR_MD_GETTHREADAFFINITYMASK
383 #define _MD_EXIT_THREAD             _PR_MD_EXIT_THREAD
384 #define _MD_SUSPEND_THREAD          _PR_MD_SUSPEND_THREAD
385 #define _MD_RESUME_THREAD           _PR_MD_RESUME_THREAD
386 #define _MD_SUSPEND_CPU             _PR_MD_SUSPEND_CPU
387 #define _MD_RESUME_CPU              _PR_MD_RESUME_CPU
388 #define _MD_BEGIN_SUSPEND_ALL()
389 #define _MD_BEGIN_RESUME_ALL()
390 #define _MD_END_SUSPEND_ALL()
391 #define _MD_END_RESUME_ALL()
392 
393 extern void _PR_Unblock_IO_Wait(PRThread *thr);
394 
395 /* --- Lock stuff --- */
396 #define _MD_NEW_LOCK(lock)            (InitializeCriticalSection(&((lock)->mutex)),PR_SUCCESS)
397 #define _MD_FREE_LOCK(lock)           DeleteCriticalSection(&((lock)->mutex))
398 #ifndef PROFILE_LOCKS
399 #define _MD_LOCK(lock)                EnterCriticalSection(&((lock)->mutex))
400 #define _MD_TEST_AND_LOCK(lock)       (TryEnterCriticalSection(&((lock)->mutex))== FALSE)
401 #define _MD_UNLOCK(lock)              LeaveCriticalSection(&((lock)->mutex))
402 #else
403 #define _MD_LOCK(lock)                 \
404     PR_BEGIN_MACRO \
405     BOOL rv = TryEnterCriticalSection(&((lock)->mutex)); \
406     if (rv == TRUE) { \
407         InterlockedIncrement(&((lock)->hitcount)); \
408     } else { \
409         InterlockedIncrement(&((lock)->misscount)); \
410         EnterCriticalSection(&((lock)->mutex)); \
411     } \
412     PR_END_MACRO
413 #define _MD_TEST_AND_LOCK(lock)       0  /* XXXMB */
414 #define _MD_UNLOCK(lock)              LeaveCriticalSection(&((lock)->mutex))
415 #endif
416 #define _PR_LOCK                      _MD_LOCK
417 #define _PR_UNLOCK					  _MD_UNLOCK
418 
419 /* --- lock and cv waiting --- */
420 #define _MD_WAIT                      _PR_MD_WAIT
421 #define _MD_WAKEUP_WAITER             _PR_MD_WAKEUP_WAITER
422 
423    /* XXXMB- the IOQ stuff is certainly not working correctly yet. */
424 extern  struct _MDLock              _pr_ioq_lock;
425 #define _MD_IOQ_LOCK()                _MD_LOCK(&_pr_ioq_lock)
426 #define _MD_IOQ_UNLOCK()              _MD_UNLOCK(&_pr_ioq_lock)
427 
428 
429 /* --- Initialization stuff --- */
430 #define _MD_START_INTERRUPTS()
431 #define _MD_STOP_INTERRUPTS()
432 #define _MD_DISABLE_CLOCK_INTERRUPTS()
433 #define _MD_ENABLE_CLOCK_INTERRUPTS()
434 #define _MD_BLOCK_CLOCK_INTERRUPTS()
435 #define _MD_UNBLOCK_CLOCK_INTERRUPTS()
436 #define _MD_EARLY_INIT                _PR_MD_EARLY_INIT
437 #define _MD_FINAL_INIT()
438 #define _MD_EARLY_CLEANUP()
439 #define _MD_INIT_CPUS()
440 #define _MD_INIT_RUNNING_CPU(cpu)
441 
442 struct PRProcess;
443 struct PRProcessAttr;
444 
445 /* --- Create a new process --- */
446 #define _MD_CREATE_PROCESS _PR_CreateWindowsProcess
447 extern struct PRProcess * _PR_CreateWindowsProcess(
448     const char *path,
449     char *const *argv,
450     char *const *envp,
451     const struct PRProcessAttr *attr
452 );
453 
454 #define _MD_DETACH_PROCESS _PR_DetachWindowsProcess
455 extern PRStatus _PR_DetachWindowsProcess(struct PRProcess *process);
456 
457 /* --- Wait for a child process to terminate --- */
458 #define _MD_WAIT_PROCESS _PR_WaitWindowsProcess
459 extern PRStatus _PR_WaitWindowsProcess(struct PRProcess *process,
460     PRInt32 *exitCode);
461 
462 #define _MD_KILL_PROCESS _PR_KillWindowsProcess
463 extern PRStatus _PR_KillWindowsProcess(struct PRProcess *process);
464 
465 /* --- User Threading stuff --- */
466 #define HAVE_FIBERS
467 #define _MD_CREATE_USER_THREAD            _PR_MD_CREATE_USER_THREAD
468 #define _MD_CREATE_PRIMORDIAL_USER_THREAD _PR_MD_CREATE_PRIMORDIAL_USER_THREAD
469 #define _MD_CLEANUP_BEFORE_EXIT           _PR_MD_CLEANUP_BEFORE_EXIT
470 #define _MD_EXIT                          _PR_MD_EXIT
471 #define _MD_INIT_CONTEXT                  _PR_MD_INIT_CONTEXT
472 #define _MD_SWITCH_CONTEXT                _PR_MD_SWITCH_CONTEXT
473 #define _MD_RESTORE_CONTEXT               _PR_MD_RESTORE_CONTEXT
474 
475 /* --- Intervals --- */
476 #define _MD_INTERVAL_INIT                 _PR_MD_INTERVAL_INIT
477 #define _MD_GET_INTERVAL                  _PR_MD_GET_INTERVAL
478 #define _MD_INTERVAL_PER_SEC              _PR_MD_INTERVAL_PER_SEC
479 #define _MD_INTERVAL_PER_MILLISEC()       (_PR_MD_INTERVAL_PER_SEC() / 1000)
480 #define _MD_INTERVAL_PER_MICROSEC()       (_PR_MD_INTERVAL_PER_SEC() / 1000000)
481 
482 /* --- Time --- */
483 extern void _PR_FileTimeToPRTime(const FILETIME *filetime, PRTime *prtm);
484 
485 /* --- Native-Thread Specific Definitions ------------------------------- */
486 
487 extern BOOL _pr_use_static_tls;
488 
489 extern __declspec(thread) struct PRThread *_pr_current_fiber;
490 extern DWORD _pr_currentFiberIndex;
491 
492 #define _MD_GET_ATTACHED_THREAD() \
493     (_pr_use_static_tls ? _pr_current_fiber \
494     : (PRThread *) TlsGetValue(_pr_currentFiberIndex))
495 
496 extern struct PRThread * _MD_CURRENT_THREAD(void);
497 
498 #define _MD_SET_CURRENT_THREAD(_thread) \
499     PR_BEGIN_MACRO \
500         if (_pr_use_static_tls) { \
501             _pr_current_fiber = (_thread); \
502         } else { \
503             TlsSetValue(_pr_currentFiberIndex, (_thread)); \
504         } \
505     PR_END_MACRO
506 
507 extern __declspec(thread) struct PRThread *_pr_fiber_last_run;
508 extern DWORD _pr_lastFiberIndex;
509 
510 #define _MD_LAST_THREAD() \
511     (_pr_use_static_tls ? _pr_fiber_last_run \
512     : (PRThread *) TlsGetValue(_pr_lastFiberIndex))
513 
514 #define _MD_SET_LAST_THREAD(_thread) \
515     PR_BEGIN_MACRO \
516         if (_pr_use_static_tls) { \
517             _pr_fiber_last_run = (_thread); \
518         } else { \
519             TlsSetValue(_pr_lastFiberIndex, (_thread)); \
520         } \
521     PR_END_MACRO
522 
523 extern __declspec(thread) struct _PRCPU *_pr_current_cpu;
524 extern DWORD _pr_currentCPUIndex;
525 
526 #define _MD_CURRENT_CPU() \
527     (_pr_use_static_tls ? _pr_current_cpu \
528     : (struct _PRCPU *) TlsGetValue(_pr_currentCPUIndex))
529 
530 #define _MD_SET_CURRENT_CPU(_cpu) \
531     PR_BEGIN_MACRO \
532         if (_pr_use_static_tls) { \
533             _pr_current_cpu = (_cpu); \
534         } else { \
535             TlsSetValue(_pr_currentCPUIndex, (_cpu)); \
536         } \
537     PR_END_MACRO
538 
539 extern __declspec(thread) PRUintn _pr_ints_off;
540 extern DWORD _pr_intsOffIndex;
541 
542 #define _MD_GET_INTSOFF() \
543     (_pr_use_static_tls ? _pr_ints_off \
544     : (PRUintn) TlsGetValue(_pr_intsOffIndex))
545 
546 #define _MD_SET_INTSOFF(_val) \
547     PR_BEGIN_MACRO \
548         if (_pr_use_static_tls) { \
549             _pr_ints_off = (_val); \
550         } else { \
551             TlsSetValue(_pr_intsOffIndex, (LPVOID) (_val)); \
552         } \
553     PR_END_MACRO
554 
555 /* --- Initialization stuff --- */
556 #define _MD_INIT_LOCKS()
557 
558 /* --- Stack stuff --- */
559 #define _MD_INIT_STACK(stack, redzone)
560 #define _MD_CLEAR_STACK(stack)
561 
562 /* --- Memory-mapped files stuff --- */
563 
564 struct _MDFileMap {
565     HANDLE hFileMap;
566     DWORD dwAccess;
567 };
568 
569 extern PRStatus _MD_CreateFileMap(struct PRFileMap *fmap, PRInt64 size);
570 #define _MD_CREATE_FILE_MAP _MD_CreateFileMap
571 
572 extern PRInt32 _MD_GetMemMapAlignment(void);
573 #define _MD_GET_MEM_MAP_ALIGNMENT _MD_GetMemMapAlignment
574 
575 extern void * _MD_MemMap(struct PRFileMap *fmap, PRInt64 offset,
576         PRUint32 len);
577 #define _MD_MEM_MAP _MD_MemMap
578 
579 extern PRStatus _MD_MemUnmap(void *addr, PRUint32 size);
580 #define _MD_MEM_UNMAP _MD_MemUnmap
581 
582 extern PRStatus _MD_CloseFileMap(struct PRFileMap *fmap);
583 #define _MD_CLOSE_FILE_MAP _MD_CloseFileMap
584 
585 extern PRStatus _MD_SyncMemMap(
586     PRFileDesc *fd,
587     void *addr,
588     PRUint32 len);
589 #define _MD_SYNC_MEM_MAP _MD_SyncMemMap
590 
591 /* --- Named semaphores stuff --- */
592 #define _PR_HAVE_NAMED_SEMAPHORES
593 #define _MD_OPEN_SEMAPHORE            _PR_MD_OPEN_SEMAPHORE
594 #define _MD_WAIT_SEMAPHORE            _PR_MD_WAIT_SEMAPHORE
595 #define _MD_POST_SEMAPHORE            _PR_MD_POST_SEMAPHORE
596 #define _MD_CLOSE_SEMAPHORE           _PR_MD_CLOSE_SEMAPHORE
597 #define _MD_DELETE_SEMAPHORE(name)    PR_SUCCESS  /* no op */
598 
599 #endif /* nspr_win32_defs_h___ */
600