third_party/npapi/npspy/extern/nspr/md/_os2.h

   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_os2_defs_h___
  36 #define nspr_os2_defs_h___
  37
  38 #define INCL_DOS
  39 #define INCL_DOSPROCESS
  40 #define INCL_DOSERRORS
  41 #define INCL_WIN
  42 #define INCL_WPS
  43 #include <os2.h>
  44 #include <sys/select.h>
  45
  46 #include "prio.h"
  47
  48 #include <errno.h>
  49
  50 #ifdef XP_OS2_VACPP
  51 /* TODO RAMSEMs need to be written for GCC/EMX */
  52 #define USE_RAMSEM
  53 #endif
  54
  55 #ifdef USE_RAMSEM
  56 #pragma pack(4)
  57
  58 #pragma pack(2)
  59 typedef struct _RAMSEM
  60 {
  61    ULONG   ulTIDPID;
  62    ULONG   hevSem;
  63    ULONG   cLocks;
  64    USHORT  cWaiting;
  65    USHORT  cPosts;
  66 } RAMSEM, *PRAMSEM;
  67
  68 typedef struct _CRITICAL_SECTION
  69 {
  70     ULONG ulReserved[4]; /* Same size as RAMSEM */
  71 } CRITICAL_SECTION, *PCRITICAL_SECTION, *LPCRITICAL_SECTION;
  72 #pragma pack(4)
  73
  74 APIRET _Optlink SemRequest486(PRAMSEM, ULONG);
  75 APIRET _Optlink SemReleasex86(PRAMSEM, ULONG);
  76 #endif
  77
  78 /*
  79  * Internal configuration macros
  80  */
  81
  82 #define PR_LINKER_ARCH      "os2"
  83 #define _PR_SI_SYSNAME        "OS2"
  84 #define _PR_SI_ARCHITECTURE   "x86"    /* XXXMB hardcode for now */
  85
  86 #define HAVE_DLL
  87 #define _PR_GLOBAL_THREADS_ONLY
  88 #undef  HAVE_THREAD_AFFINITY
  89 #define _PR_HAVE_THREADSAFE_GETHOST
  90 #define _PR_HAVE_ATOMIC_OPS
  91
  92 #define HANDLE unsigned long
  93 #define HINSTANCE HMODULE
  94
  95 /* --- Common User-Thread/Native-Thread Definitions --------------------- */
  96
  97 /* --- Globals --- */
  98 extern struct PRLock                      *_pr_schedLock;
  99
 100 /* --- Typedefs --- */
 101 typedef void (*FiberFunc)(void *);
 102
 103 #define PR_NUM_GCREGS           8
 104 typedef PRInt32                 PR_CONTEXT_TYPE[PR_NUM_GCREGS];
 105 #define GC_VMBASE               0x40000000
 106 #define GC_VMLIMIT              0x00FFFFFF
 107 typedef int (*FARPROC)();
 108
 109 #define _MD_MAGIC_THREAD        0x22222222
 110 #define _MD_MAGIC_THREADSTACK   0x33333333
 111 #define _MD_MAGIC_SEGMENT       0x44444444
 112 #define _MD_MAGIC_DIR           0x55555555
 113 #define _MD_MAGIC_CV        0x66666666
 114
 115 struct _MDSemaphore {
 116    HEV sem;
 117 };
 118
 119 struct _MDCPU {
 120     int              unused;
 121 };
 122
 123 struct _MDThread {
 124     HEV              blocked_sema;      /* Threads block on this when waiting
 125                                          * for IO or CondVar.
 126                                          */
 127     PRBool           inCVWaitQueue;     /* PR_TRUE if the thread is in the
 128                                          * wait queue of some cond var.
 129                                          * PR_FALSE otherwise.  */
 130     TID              handle;            /* OS/2 thread handle */
 131     void            *sp;                /* only valid when suspended */
 132     PRUint32         magic;             /* for debugging */
 133     PR_CONTEXT_TYPE  gcContext;         /* Thread context for GC */
 134     struct PRThread *prev, *next;       /* used by the cvar wait queue to
 135                                          * chain the PRThread structures
 136                                          * together */
 137 };
 138
 139 struct _MDThreadStack {
 140     PRUint32           magic;          /* for debugging */
 141 };
 142
 143 struct _MDSegment {
 144     PRUint32           magic;          /* for debugging */
 145 };
 146
 147 #undef PROFILE_LOCKS
 148
 149 struct _MDDir {
 150     HDIR           d_hdl;
 151     FILEFINDBUF3  d_entry;
 152     PRBool           firstEntry;     /* Is this the entry returned
 153                                       * by FindFirstFile()? */
 154     PRUint32         magic;          /* for debugging */
 155 };
 156
 157 struct _MDCVar {
 158     PRUint32 magic;
 159     struct PRThread *waitHead, *waitTail;  /* the wait queue: a doubly-
 160                                             * linked list of threads
 161                                             * waiting on this condition
 162                                             * variable */
 163     PRIntn nwait;                          /* number of threads in the
 164                                             * wait queue */
 165 };
 166
 167 #define _MD_CV_NOTIFIED_LENGTH 6
 168 typedef struct _MDNotified _MDNotified;
 169 struct _MDNotified {
 170     PRIntn length;                     /* # of used entries in this
 171                                         * structure */
 172     struct {
 173         struct _MDCVar *cv;            /* the condition variable notified */
 174         PRIntn times;                  /* and the number of times notified */
 175         struct PRThread *notifyHead;   /* list of threads to wake up */
 176     } cv[_MD_CV_NOTIFIED_LENGTH];
 177     _MDNotified *link;                 /* link to another of these, or NULL */
 178 };
 179
 180 struct _MDLock {
 181 #ifdef USE_RAMSEM
 182     CRITICAL_SECTION mutex;            /* this is recursive on NT */
 183 #else
 184     HMTX mutex;                        /* this is recursive on NT */
 185 #endif
 186
 187     /*
 188      * When notifying cvars, there is no point in actually
 189      * waking up the threads waiting on the cvars until we've
 190      * released the lock.  So, we temporarily record the cvars.
 191      * When doing an unlock, we'll then wake up the waiting threads.
 192      */
 193     struct _MDNotified notified;     /* array of conditions notified */
 194 #ifdef PROFILE_LOCKS
 195     PRInt32 hitcount;
 196     PRInt32 misscount;
 197 #endif
 198 };
 199
 200 struct _MDFileDesc {
 201     PRInt32 osfd;    /* The osfd can come from one of three spaces:
 202                       * - For stdin, stdout, and stderr, we are using
 203                       *   the libc file handle (0, 1, 2), which is an int.
 204                       * - For files and pipes, we are using OS/2 handles,
 205                       *   which is a void*.
 206                       * - For sockets, we are using int
 207                       */
 208 };
 209
 210 struct _MDProcess {
 211    PID pid;
 212 };
 213
 214 /* --- Misc stuff --- */
 215 #define _MD_GET_SP(thread)            (thread)->md.gcContext[6]
 216
 217 /* --- IO stuff --- */
 218
 219 #define _MD_OPEN                      (_PR_MD_OPEN)
 220 #define _MD_OPEN_FILE                 (_PR_MD_OPEN)
 221 #define _MD_READ                      (_PR_MD_READ)
 222 #define _MD_WRITE                     (_PR_MD_WRITE)
 223 #define _MD_WRITEV                    (_PR_MD_WRITEV)
 224 #define _MD_LSEEK                     (_PR_MD_LSEEK)
 225 #define _MD_LSEEK64                   (_PR_MD_LSEEK64)
 226 extern PRInt32 _MD_CloseFile(PRInt32 osfd);
 227 #define _MD_CLOSE_FILE                _MD_CloseFile
 228 #define _MD_GETFILEINFO               (_PR_MD_GETFILEINFO)
 229 #define _MD_GETFILEINFO64             (_PR_MD_GETFILEINFO64)
 230 #define _MD_GETOPENFILEINFO           (_PR_MD_GETOPENFILEINFO)
 231 #define _MD_GETOPENFILEINFO64         (_PR_MD_GETOPENFILEINFO64)
 232 #define _MD_STAT                      (_PR_MD_STAT)
 233 #define _MD_RENAME                    (_PR_MD_RENAME)
 234 #define _MD_ACCESS                    (_PR_MD_ACCESS)
 235 #define _MD_DELETE                    (_PR_MD_DELETE)
 236 #define _MD_MKDIR                     (_PR_MD_MKDIR)
 237 #define _MD_MAKE_DIR                  (_PR_MD_MKDIR)
 238 #define _MD_RMDIR                     (_PR_MD_RMDIR)
 239 #define _MD_LOCKFILE                  (_PR_MD_LOCKFILE)
 240 #define _MD_TLOCKFILE                 (_PR_MD_TLOCKFILE)
 241 #define _MD_UNLOCKFILE                (_PR_MD_UNLOCKFILE)
 242
 243 /* --- Socket IO stuff --- */
 244
 245 #define TCPV40HDRS
 246 #define BSD_SELECT
 247
 248 /* The ones that don't map directly may need to be re-visited... */
 249 #ifdef XP_OS2_VACPP
 250 #define EPIPE                     EBADF
 251 #define EIO                       ECONNREFUSED
 252 #endif
 253 #define _MD_EACCES                EACCES
 254 #define _MD_EADDRINUSE            EADDRINUSE
 255 #define _MD_EADDRNOTAVAIL         EADDRNOTAVAIL
 256 #define _MD_EAFNOSUPPORT          EAFNOSUPPORT
 257 #define _MD_EAGAIN                EWOULDBLOCK
 258 #define _MD_EALREADY              EALREADY
 259 #define _MD_EBADF                 EBADF
 260 #define _MD_ECONNREFUSED          ECONNREFUSED
 261 #define _MD_ECONNRESET            ECONNRESET
 262 #define _MD_EFAULT                SOCEFAULT
 263 #define _MD_EINPROGRESS           EINPROGRESS
 264 #define _MD_EINTR                 EINTR
 265 #define _MD_EINVAL                EINVAL
 266 #define _MD_EISCONN               EISCONN
 267 #define _MD_ENETUNREACH           ENETUNREACH
 268 #define _MD_ENOENT                ENOENT
 269 #define _MD_ENOTCONN              ENOTCONN
 270 #define _MD_ENOTSOCK              ENOTSOCK
 271 #define _MD_EOPNOTSUPP            EOPNOTSUPP
 272 #define _MD_EWOULDBLOCK           EWOULDBLOCK
 273 #define _MD_GET_SOCKET_ERROR()    sock_errno()
 274 #ifndef INADDR_LOOPBACK /* For some reason this is not defined in OS2 tcpip */
 275 /*  #define INADDR_LOOPBACK         INADDR_ANY */
 276 #endif
 277
 278 #define _MD_INIT_FILEDESC(fd)
 279 extern void _MD_MakeNonblock(PRFileDesc *f);
 280 #define _MD_MAKE_NONBLOCK             _MD_MakeNonblock
 281 #define _MD_INIT_FD_INHERITABLE       (_PR_MD_INIT_FD_INHERITABLE)
 282 #define _MD_QUERY_FD_INHERITABLE      (_PR_MD_QUERY_FD_INHERITABLE)
 283 #define _MD_SHUTDOWN                  (_PR_MD_SHUTDOWN)
 284 #define _MD_LISTEN                    _PR_MD_LISTEN
 285 extern PRInt32 _MD_CloseSocket(PRInt32 osfd);
 286 #define _MD_CLOSE_SOCKET              _MD_CloseSocket
 287 #define _MD_SENDTO                    (_PR_MD_SENDTO)
 288 #define _MD_RECVFROM                  (_PR_MD_RECVFROM)
 289 #define _MD_SOCKETPAIR                (_PR_MD_SOCKETPAIR)
 290 #define _MD_GETSOCKNAME               (_PR_MD_GETSOCKNAME)
 291 #define _MD_GETPEERNAME               (_PR_MD_GETPEERNAME)
 292 #define _MD_GETSOCKOPT                (_PR_MD_GETSOCKOPT)
 293 #define _MD_SETSOCKOPT                (_PR_MD_SETSOCKOPT)
 294
 295 #define _MD_FSYNC                     _PR_MD_FSYNC
 296 #define _MD_SET_FD_INHERITABLE        (_PR_MD_SET_FD_INHERITABLE)
 297
 298 #ifdef _PR_HAVE_ATOMIC_OPS
 299 #define _MD_INIT_ATOMIC()
 300 #define _MD_ATOMIC_INCREMENT          _PR_MD_ATOMIC_INCREMENT
 301 #define _MD_ATOMIC_ADD                _PR_MD_ATOMIC_ADD
 302 #define _MD_ATOMIC_DECREMENT          _PR_MD_ATOMIC_DECREMENT
 303 #define _MD_ATOMIC_SET                _PR_MD_ATOMIC_SET
 304 #endif
 305
 306 #define _MD_INIT_IO                   (_PR_MD_INIT_IO)
 307 #define _MD_PR_POLL                   (_PR_MD_PR_POLL)
 308
 309 #define _MD_SOCKET                    (_PR_MD_SOCKET)
 310 extern PRInt32 _MD_SocketAvailable(PRFileDesc *fd);
 311 #define _MD_SOCKETAVAILABLE           _MD_SocketAvailable
 312 #define _MD_PIPEAVAILABLE             _MD_SocketAvailable
 313 #define _MD_CONNECT                   (_PR_MD_CONNECT)
 314 extern PRInt32 _MD_Accept(PRFileDesc *fd, PRNetAddr *raddr, PRUint32 *rlen,
 315         PRIntervalTime timeout);
 316 #define _MD_ACCEPT                    _MD_Accept
 317 #define _MD_BIND                      (_PR_MD_BIND)
 318 #define _MD_RECV                      (_PR_MD_RECV)
 319 #define _MD_SEND                      (_PR_MD_SEND)
 320
 321 /* --- Scheduler stuff --- */
 322 /* #define _MD_PAUSE_CPU                 _PR_MD_PAUSE_CPU */
 323 #define _MD_PAUSE_CPU
 324
 325 /* --- DIR stuff --- */
 326 #define PR_DIRECTORY_SEPARATOR        '\\'
 327 #define PR_DIRECTORY_SEPARATOR_STR    "\\"
 328 #define PR_PATH_SEPARATOR               ';'
 329 #define PR_PATH_SEPARATOR_STR           ";"
 330 #define _MD_ERRNO()                   errno
 331 #define _MD_OPEN_DIR                  (_PR_MD_OPEN_DIR)
 332 #define _MD_CLOSE_DIR                 (_PR_MD_CLOSE_DIR)
 333 #define _MD_READ_DIR                  (_PR_MD_READ_DIR)
 334
 335 /* --- Segment stuff --- */
 336 #define _MD_INIT_SEGS()
 337 #define _MD_ALLOC_SEGMENT(seg, size, vaddr)   0
 338 #define _MD_FREE_SEGMENT(seg)
 339
 340 /* --- Environment Stuff --- */
 341 #define _MD_GET_ENV                 (_PR_MD_GET_ENV)
 342 #define _MD_PUT_ENV                 (_PR_MD_PUT_ENV)
 343
 344 /* --- Threading Stuff --- */
 345 #define _MD_DEFAULT_STACK_SIZE      65536L
 346 #define _MD_INIT_THREAD             (_PR_MD_INIT_THREAD)
 347 #define _MD_INIT_ATTACHED_THREAD    (_PR_MD_INIT_THREAD)
 348 #define _MD_CREATE_THREAD           (_PR_MD_CREATE_THREAD)
 349 #define _MD_YIELD                   (_PR_MD_YIELD)
 350 #define _MD_SET_PRIORITY            (_PR_MD_SET_PRIORITY)
 351 #define _MD_CLEAN_THREAD            (_PR_MD_CLEAN_THREAD)
 352 #define _MD_SETTHREADAFFINITYMASK   (_PR_MD_SETTHREADAFFINITYMASK)
 353 #define _MD_GETTHREADAFFINITYMASK   (_PR_MD_GETTHREADAFFINITYMASK)
 354 #define _MD_EXIT_THREAD             (_PR_MD_EXIT_THREAD)
 355 #define _MD_SUSPEND_THREAD          (_PR_MD_SUSPEND_THREAD)
 356 #define _MD_RESUME_THREAD           (_PR_MD_RESUME_THREAD)
 357 #define _MD_SUSPEND_CPU             (_PR_MD_SUSPEND_CPU)
 358 #define _MD_RESUME_CPU              (_PR_MD_RESUME_CPU)
 359 #define _MD_WAKEUP_CPUS             (_PR_MD_WAKEUP_CPUS)
 360 #define _MD_BEGIN_SUSPEND_ALL()
 361 #define _MD_BEGIN_RESUME_ALL()
 362 #define _MD_END_SUSPEND_ALL()
 363 #define _MD_END_RESUME_ALL()
 364
 365 /* --- Lock stuff --- */
 366 #define _PR_LOCK                      _MD_LOCK
 367 #define _PR_UNLOCK                                        _MD_UNLOCK
 368
 369 #ifdef USE_RAMSEM
 370 #define _MD_NEW_LOCK                  (_PR_MD_NEW_LOCK)
 371 #define _MD_FREE_LOCK(lock)           (DosCloseEventSem(((PRAMSEM)(&((lock)->mutex)))->hevSem))
 372 #define _MD_LOCK(lock)                (SemRequest486(&((lock)->mutex), -1))
 373 #define _MD_TEST_AND_LOCK(lock)       (SemRequest486(&((lock)->mutex), -1),0)
 374 #define _MD_UNLOCK(lock)              \
 375     PR_BEGIN_MACRO \
 376     if (0 != (lock)->notified.length) { \
 377         md_UnlockAndPostNotifies((lock), NULL, NULL); \
 378     } else { \
 379         SemReleasex86( &(lock)->mutex, 0 ); \
 380     } \
 381     PR_END_MACRO
 382 #else
 383 #define _MD_NEW_LOCK                  (_PR_MD_NEW_LOCK)
 384 #define _MD_FREE_LOCK(lock)           (DosCloseMutexSem((lock)->mutex))
 385 #define _MD_LOCK(lock)                (DosRequestMutexSem((lock)->mutex, SEM_INDEFINITE_WAIT))
 386 #define _MD_TEST_AND_LOCK(lock)       (DosRequestMutexSem((lock)->mutex, SEM_INDEFINITE_WAIT),0)
 387 #define _MD_UNLOCK(lock)              \
 388     PR_BEGIN_MACRO \
 389     if (0 != (lock)->notified.length) { \
 390         md_UnlockAndPostNotifies((lock), NULL, NULL); \
 391     } else { \
 392         DosReleaseMutexSem((lock)->mutex); \
 393     } \
 394     PR_END_MACRO
 395 #endif
 396
 397 /* --- lock and cv waiting --- */
 398 #define _MD_WAIT                      (_PR_MD_WAIT)
 399 #define _MD_WAKEUP_WAITER             (_PR_MD_WAKEUP_WAITER)
 400
 401 /* --- CVar ------------------- */
 402 #define _MD_WAIT_CV                                       (_PR_MD_WAIT_CV)
 403 #define _MD_NEW_CV                                        (_PR_MD_NEW_CV)
 404 #define _MD_FREE_CV                                       (_PR_MD_FREE_CV)
 405 #define _MD_NOTIFY_CV                             (_PR_MD_NOTIFY_CV     )
 406 #define _MD_NOTIFYALL_CV                          (_PR_MD_NOTIFYALL_CV)
 407
 408    /* XXXMB- the IOQ stuff is certainly not working correctly yet. */
 409 /* extern  struct _MDLock              _pr_ioq_lock; */
 410 #define _MD_IOQ_LOCK()
 411 #define _MD_IOQ_UNLOCK()
 412
 413
 414 /* --- Initialization stuff --- */
 415 #define _MD_START_INTERRUPTS()
 416 #define _MD_STOP_INTERRUPTS()
 417 #define _MD_DISABLE_CLOCK_INTERRUPTS()
 418 #define _MD_ENABLE_CLOCK_INTERRUPTS()
 419 #define _MD_BLOCK_CLOCK_INTERRUPTS()
 420 #define _MD_UNBLOCK_CLOCK_INTERRUPTS()
 421 #define _MD_EARLY_INIT                (_PR_MD_EARLY_INIT)
 422 #define _MD_FINAL_INIT()
 423 #define _MD_INIT_CPUS()
 424 #define _MD_INIT_RUNNING_CPU(cpu)
 425
 426 struct PRProcess;
 427 struct PRProcessAttr;
 428
 429 #define _MD_CREATE_PROCESS _PR_CreateOS2Process
 430 extern struct PRProcess * _PR_CreateOS2Process(
 431     const char *path,
 432     char *const *argv,
 433     char *const *envp,
 434     const struct PRProcessAttr *attr
 435 );
 436
 437 #define _MD_DETACH_PROCESS _PR_DetachOS2Process
 438 extern PRStatus _PR_DetachOS2Process(struct PRProcess *process);
 439
 440 /* --- Wait for a child process to terminate --- */
 441 #define _MD_WAIT_PROCESS _PR_WaitOS2Process
 442 extern PRStatus _PR_WaitOS2Process(struct PRProcess *process,
 443     PRInt32 *exitCode);
 444
 445 #define _MD_KILL_PROCESS _PR_KillOS2Process
 446 extern PRStatus _PR_KillOS2Process(struct PRProcess *process);
 447
 448 #define _MD_CLEANUP_BEFORE_EXIT()
 449 #define _MD_EXIT                          (_PR_MD_EXIT)
 450 #define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \
 451     PR_BEGIN_MACRO \
 452     *status = PR_TRUE; \
 453     PR_END_MACRO
 454 #define _MD_SWITCH_CONTEXT
 455 #define _MD_RESTORE_CONTEXT
 456
 457 /* --- Intervals --- */
 458 #define _MD_INTERVAL_INIT                 (_PR_MD_INTERVAL_INIT)
 459 #define _MD_GET_INTERVAL                  (_PR_MD_GET_INTERVAL)
 460 #define _MD_INTERVAL_PER_SEC              (_PR_MD_INTERVAL_PER_SEC)
 461 #define _MD_INTERVAL_PER_MILLISEC()       (_PR_MD_INTERVAL_PER_SEC() / 1000)
 462 #define _MD_INTERVAL_PER_MICROSEC()       (_PR_MD_INTERVAL_PER_SEC() / 1000000)
 463
 464 /* --- Native-Thread Specific Definitions ------------------------------- */
 465
 466 typedef struct __NSPR_TLS
 467 {
 468     struct PRThread  *_pr_thread_last_run;
 469     struct PRThread  *_pr_currentThread;
 470     struct _PRCPU    *_pr_currentCPU;
 471 } _NSPR_TLS;
 472
 473 extern _NSPR_TLS*  pThreadLocalStorage;
 474 NSPR_API(void) _PR_MD_ENSURE_TLS(void);
 475
 476 #define _MD_GET_ATTACHED_THREAD() pThreadLocalStorage->_pr_currentThread
 477 extern struct PRThread * _MD_CURRENT_THREAD(void);
 478 #define _MD_SET_CURRENT_THREAD(_thread) _PR_MD_ENSURE_TLS(); pThreadLocalStorage->_pr_currentThread = (_thread)
 479
 480 #define _MD_LAST_THREAD() pThreadLocalStorage->_pr_thread_last_run
 481 #define _MD_SET_LAST_THREAD(_thread) _PR_MD_ENSURE_TLS(); pThreadLocalStorage->_pr_thread_last_run = (_thread)
 482
 483 #define _MD_CURRENT_CPU() pThreadLocalStorage->_pr_currentCPU
 484 #define _MD_SET_CURRENT_CPU(_cpu) _PR_MD_ENSURE_TLS(); pThreadLocalStorage->_pr_currentCPU = (_cpu)
 485
 486 /* lth. #define _MD_SET_INTSOFF(_val) (_pr_ints_off = (_val)) */
 487 /* lth. #define _MD_GET_INTSOFF() _pr_ints_off */
 488 /* lth. #define _MD_INCREMENT_INTSOFF() (_pr_ints_off++) */
 489 /* lth. #define _MD_DECREMENT_INTSOFF() (_pr_ints_off--) */
 490
 491 /* --- Scheduler stuff --- */
 492 #define LOCK_SCHEDULER()                 0
 493 #define UNLOCK_SCHEDULER()               0
 494 #define _PR_LockSched()                  0
 495 #define _PR_UnlockSched()                0
 496
 497 /* --- Initialization stuff --- */
 498 #define _MD_INIT_LOCKS()
 499
 500 /* --- Stack stuff --- */
 501 #define _MD_INIT_STACK(stack, redzone)
 502 #define _MD_CLEAR_STACK(stack)
 503
 504 /* --- Memory-mapped files stuff --- not implemented on OS/2 */
 505
 506 struct _MDFileMap {
 507     PRInt8 unused;
 508 };
 509
 510 extern PRStatus _MD_CreateFileMap(struct PRFileMap *fmap, PRInt64 size);
 511 #define _MD_CREATE_FILE_MAP _MD_CreateFileMap
 512
 513 extern PRInt32 _MD_GetMemMapAlignment(void);
 514 #define _MD_GET_MEM_MAP_ALIGNMENT _MD_GetMemMapAlignment
 515
 516 extern void * _MD_MemMap(struct PRFileMap *fmap, PRInt64 offset,
 517         PRUint32 len);
 518 #define _MD_MEM_MAP _MD_MemMap
 519
 520 extern PRStatus _MD_MemUnmap(void *addr, PRUint32 size);
 521 #define _MD_MEM_UNMAP _MD_MemUnmap
 522
 523 extern PRStatus _MD_CloseFileMap(struct PRFileMap *fmap);
 524 #define _MD_CLOSE_FILE_MAP _MD_CloseFileMap
 525
 526 /* Some stuff for setting up thread contexts */
 527 typedef ULONG DWORD, *PDWORD;
 528
 529 /* The following definitions and two structures are new in OS/2 Warp 4.0.
 530  */
 531 #ifndef CONTEXT_CONTROL
 532 #define CONTEXT_CONTROL        0x00000001
 533 #define CONTEXT_INTEGER        0x00000002
 534 #define CONTEXT_SEGMENTS       0x00000004
 535 #define CONTEXT_FLOATING_POINT 0x00000008
 536 #define CONTEXT_FULL           0x0000000F
 537
 538 #pragma pack(2)
 539 typedef struct _FPREG {
 540     ULONG      losig;    /*  Low 32-bits of the significand. */
 541     ULONG      hisig;    /*  High 32-bits of the significand. */
 542     USHORT     signexp;  /*  Sign and exponent. */
 543 } FPREG;
 544 typedef struct _CONTEXTRECORD {
 545     ULONG     ContextFlags;
 546     ULONG     ctx_env[7];
 547     FPREG     ctx_stack[8];
 548     ULONG     ctx_SegGs;     /*  GS register. */
 549     ULONG     ctx_SegFs;     /*  FS register. */
 550     ULONG     ctx_SegEs;     /*  ES register. */
 551     ULONG     ctx_SegDs;     /*  DS register. */
 552     ULONG     ctx_RegEdi;    /*  EDI register. */
 553     ULONG     ctx_RegEsi;    /*  ESI register. */
 554     ULONG     ctx_RegEax;    /*  EAX register. */
 555     ULONG     ctx_RegEbx;    /*  EBX register. */
 556     ULONG     ctx_RegEcx;    /*  ECX register. */
 557     ULONG     ctx_RegEdx;    /*  EDX register. */
 558     ULONG     ctx_RegEbp;    /*  EBP register. */
 559     ULONG     ctx_RegEip;    /*  EIP register. */
 560     ULONG     ctx_SegCs;     /*  CS register. */
 561     ULONG     ctx_EFlags;    /*  EFLAGS register. */
 562     ULONG     ctx_RegEsp;    /*  ESP register. */
 563     ULONG     ctx_SegSs;     /*  SS register. */
 564 } CONTEXTRECORD, *PCONTEXTRECORD;
 565 #pragma pack()
 566 #endif
 567
 568 extern APIRET (* APIENTRY QueryThreadContext)(TID, ULONG, PCONTEXTRECORD);
 569 unsigned long _System _DLL_InitTerm( unsigned long mod_handle, unsigned long flag);
 570
 571 /*
 572 #define _pr_tid            (((PTIB2)_getTIBvalue(offsetof(TIB, tib_ptib2)))->tib2_ultid)
 573 #define _pr_current_Thread (_system_tls[_pr_tid-1].__pr_current_thread)
 574 */
 575
 576 /* Some simple mappings of Windows API's to OS/2 API's to make our lives a
 577  * little bit easier.  Only add one here if it is a DIRECT mapping.  We are
 578  * not emulating anything.  Just mapping.
 579  */
 580 #define FreeLibrary(x) DosFreeModule((HMODULE)x)
 581 #define OutputDebugString(x)
 582
 583 extern int _MD_os2_get_nonblocking_connect_error(int osfd);
 584
 585 #endif /* nspr_os2_defs_h___ */