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Annotation of researchv9/X11/src/X.V11R1/server/include/os.h, revision 1.1

1.1     ! root        1: /***********************************************************
        !             2: Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts,
        !             3: and the Massachusetts Institute of Technology, Cambridge, Massachusetts.
        !             4: 
        !             5:                         All Rights Reserved
        !             6: 
        !             7: Permission to use, copy, modify, and distribute this software and its 
        !             8: documentation for any purpose and without fee is hereby granted, 
        !             9: provided that the above copyright notice appear in all copies and that
        !            10: both that copyright notice and this permission notice appear in 
        !            11: supporting documentation, and that the names of Digital or MIT not be
        !            12: used in advertising or publicity pertaining to distribution of the
        !            13: software without specific, written prior permission.  
        !            14: 
        !            15: DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
        !            16: ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
        !            17: DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
        !            18: ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
        !            19: WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
        !            20: ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
        !            21: SOFTWARE.
        !            22: 
        !            23: ******************************************************************/
        !            24: 
        !            25: /* $Header: os.h,v 1.18 87/09/10 18:00:15 toddb Exp $ */
        !            26: 
        !            27: #ifndef OS_H
        !            28: #define OS_H
        !            29: #include "misc.h"
        !            30: 
        !            31: #define NullFID ((FID) 0)
        !            32: 
        !            33: #define SCREEN_SAVER_ON   0
        !            34: #define SCREEN_SAVER_OFF  1
        !            35: #define SCREEN_SAVER_FORCER 2
        !            36: 
        !            37: #define MAX_REQUEST_SIZE 16384
        !            38: 
        !            39: typedef pointer        FID;
        !            40: typedef struct _FontPathRec *FontPathPtr;
        !            41: typedef struct _NewClientRec *NewClientPtr;
        !            42: 
        !            43: /*
        !            44:  * os-dependent definition of local allocation and deallocation
        !            45:  * If you need something other than malloc/free for ALLOCATE/DEALLOCATE
        !            46:  * LOCAL then you add that to the beginning of this set.  Note that
        !            47:  * some machines do not return a valid pointer for malloc(0), in
        !            48:  * which case we provide an alternate under the control of the
        !            49:  * define MALLOC_0_RETURNS_NULL.  This is necessary because some
        !            50:  * server code expects malloc(0) to return a valid pointer to storage.
        !            51:  */
        !            52: #if defined(ibm032) && !defined(_pcc_)
        !            53: 
        !            54: #define ALLOCATE_LOCAL(size) (alloca(size))
        !            55: #define DEALLOCATE_LOCAL(ptr)
        !            56: pragma on(alloca);
        !            57: 
        !            58: #else /* everyone else */
        !            59: 
        !            60: # ifdef MALLOC_0_RETURNS_NULL
        !            61: # define ALLOCATE_LOCAL(size) (malloc(max(size,1)))
        !            62: # else
        !            63: # define ALLOCATE_LOCAL(size) (malloc(size))
        !            64: # endif
        !            65: 
        !            66: #define DEALLOCATE_LOCAL(ptr) (free(ptr))
        !            67: 
        !            68: #endif
        !            69: 
        !            70: extern WaitForSomething();
        !            71: extern char *ReadRequestFromClient();   /* should be xReq but then 
        !            72:                                           include Xproto.h */
        !            73: extern Bool CloseDownConnection();
        !            74: extern void CreateWellKnownSockets();
        !            75: extern FontPathPtr GetFontPath();
        !            76: extern FontPathPtr ExpandFontNamePattern();
        !            77: extern FID FiOpenForRead();
        !            78: extern int FiClose();
        !            79: 
        !            80: #endif /* OS_H */

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