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Annotation of coherent/c/usr/include/sys/seg.h, revision 1.1

1.1     ! root        1: /* (-lgl
        !             2:  *     COHERENT Version 3.0
        !             3:  *     Copyright (c) 1982, 1990 by Mark Williams Company.
        !             4:  *     All rights reserved. May not be copied without permission.
        !             5:  -lgl) */
        !             6: /*
        !             7:  * Segments.
        !             8:  */
        !             9: 
        !            10: #ifndef         SEG_H
        !            11: #define         SEG_H  SEG_H
        !            12: 
        !            13: #include <sys/types.h>
        !            14: 
        !            15: /*
        !            16:  * Segment structure.
        !            17:  */
        !            18: typedef struct seg {
        !            19:        struct   seg * s_forw;          /* Forward pointer */
        !            20:        struct   seg * s_back;          /* Backward pointer */
        !            21:        struct   inode * s_ip;          /* Inode pointer for shared text */
        !            22:        short    s_flags;               /* Flags */
        !            23:        short    s_urefc;               /* Reference count of segment */
        !            24:        short    s_lrefc;               /* Lock reference count */
        !            25:        faddr_t  s_faddr;               /* Memory access selector */
        !            26:        fsize_t  s_size;                /* Size in bytes */
        !            27:        paddr_t  s_paddr;               /* Physical base address */
        !            28:        daddr_t  s_daddr;               /* Disk base address */
        !            29: } SEG;
        !            30: 
        !            31: /*
        !            32:  * Flags (s_flags).
        !            33:  */
        !            34: #define SFCORE 0000001                 /* Memory resident */
        !            35: #define        SFDOWN  0000002                 /* Segment grows downward */
        !            36: #define SFSHRX 0000004                 /* Shared segment */
        !            37: #define SFTEXT 0000010                 /* Text segment */
        !            38: #define SFHIGH 0000020                 /* Allocate segment from high end */
        !            39: #define        SFSYST  0000040                 /* System segment */
        !            40: 
        !            41: /*
        !            42:  * Pseudo flags.  (passed to salloc).
        !            43:  */
        !            44: #define        SFNSWP  0040000                 /* Don't swap */
        !            45: #define SFNCLR 0100000                 /* Don't clear segment */
        !            46: 
        !            47: #ifdef KERNEL
        !            48: /*
        !            49:  * Functions.
        !            50:  */
        !            51: extern SEG     *iomapvp();             /* bio.c */
        !            52: extern SEG     *segdupl();             /* seg.c */
        !            53: extern SEG     *ssalloc();             /* seg.c */
        !            54: extern SEG     *salloc();              /* seg.c */
        !            55: extern SEG     *segsext();             /* seg.c */
        !            56: extern SEG     *segdupd();             /* seg.c */
        !            57: extern SEG     *sdalloc();             /* seg.c */
        !            58: extern SEG     *smalloc();             /* seg.c */
        !            59: extern SEG     *shalloc();             /* seg.c */
        !            60: extern SEG     *exaread();             /* exec.c */
        !            61: extern SEG     *exsread();             /* exec.c */
        !            62: extern SEG     *exstack();             /* exec.c */
        !            63: 
        !            64: #endif
        !            65: 
        !            66: #ifdef KERNEL
        !            67: /*
        !            68:  * Global variables.
        !            69:  */
        !            70: extern int     sexflag;                /* Swapper existant */
        !            71: extern GATE    seglink;                /* Gate for s_forw and s_back */
        !            72: extern SEG     segswap;                /* Segments reserved for the swapper */
        !            73: extern SEG     segmq;                  /* Memory segment queue */
        !            74: extern SEG     segdq;                  /* Segment disk queue */
        !            75: extern SEG     segiom;                 /* I/O memory segment */
        !            76: 
        !            77: #endif
        !            78: 
        !            79: #endif

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