home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
CU Amiga Super CD-ROM 6
/
CU Amiga Magazine's Super CD-ROM 06 (1996)(EMAP Images)(GB)(Track 1 of 4)[!][issue 1997-01].iso
/
cucd
/
prog
/
gnu-c
/
include
/
user.h
< prev
next >
Wrap
C/C++ Source or Header
|
1995-05-17
|
8KB
|
256 lines
/*
* This file is part of ixemul.library for the Amiga.
* Copyright (C) 1991, 1992 Markus M. Wild
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <sys/time.h>
#include <sys/resource.h>
#include <setjmp.h>
/* internal structure used by malloc(), kmalloc() and friends */
#if 0
struct malloc_data {
struct Remember *md_key;
unsigned int md_malloc_sbrk_used;
struct mhead *md_nextf[30];
char md_busy[30];
int md_gotpool;
};
#else
struct malloc_data {
struct MinList md_list;
unsigned int md_malloc_sbrk_used;
};
#endif
/*
* One structure allocated per session.
*/
struct session {
int s_count; /* ref cnt; pgrps in session */
struct proc *s_leader; /* session leader */
struct vnode *s_ttyvp; /* vnode of controlling terminal */
struct tty *s_ttyp; /* controlling terminal */
char s_login[MAXLOGNAME]; /* setlogin() name */
};
/*
* One structure allocated per process group.
*/
struct pgrp {
struct pgrp *pg_hforw; /* forward link in hash bucket */
struct proc *pg_mem; /* pointer to pgrp members */
struct session *pg_session; /* pointer to session */
pid_t pg_id; /* pgrp id */
int pg_jobc; /* # procs qualifying pgrp for job control */
};
/*
* Per process structure
*/
struct user {
/* both a magic cookie and a way to get at the library base thru u */
struct ixemul_base *u_ixbase;
/* 1.3 - signal management */
sig_t u_signal[NSIG]; /* disposition of signals */
int u_sigmask[NSIG]; /* signals to be blocked */
sigset_t u_sigonstack; /* signals to take on sigstack */
sigset_t u_sigintr; /* signals that interrupt syscalls */
sigset_t u_oldmask; /* saved mask from before sigpause */
struct sigstack u_sigstack; /* sp & on stack state variable */
#define u_onstack u_sigstack.ss_onstack
#define u_sigsp u_sigstack.ss_sp
int u_sig; /* for core dump/debugger XXX */
int u_code; /* for core dump/debugger XXX */
int p_flag; /* process flags, as necessary.. */
char p_stat;
char p_xstat; /* what does this do... ? */
char p_cursig;
sigset_t p_sig; /* signals pending to this process */
sigset_t p_sigmask; /* current signal mask */
sigset_t p_sigignore; /* signals being ignored */
sigset_t p_sigcatch; /* signals being caught by user */
caddr_t p_wchan; /* event process is awaiting */
/* 1.4 - descriptor management (for shared library version) */
struct file *u_ofile[NOFILE]; /* file structures for open files */
char u_pofile[NOFILE]; /* per-process flags of open files */
int u_lastfile; /* high-water mark of u_ofile */
#define UF_EXCLOSE 0x1 /* auto-close on exec */
short u_cmask; /* mask for file creation */
/* 1.5 - timing and statistics */
struct rusage u_ru; /* stats for this proc */
struct rusage u_cru; /* sum of stats for reaped children */
struct itimerval u_timer[3];
struct timeval u_start;
short u_acflag;
struct uprof { /* profile arguments */
short *pr_base; /* buffer base */
unsigned pr_size; /* buffer size */
unsigned pr_off; /* pc offset */
unsigned pr_scale; /* pc scaling */
} u_prof;
/* 1.6 - resource controls */
struct rlimit u_rlimit[RLIM_NLIMITS];
/* amiga specific stuff */
struct malloc_data u_md;
struct MsgPort *u_sync_mp; /* PA_SIGNAL message port */
struct timerequest *u_time_req;
int *u_errno;
BPTR u_startup_cd;
int u_ringring; /* used in sleep.c and usleep.c */
char ***u_environ;
/* used to handle amigados signals. see SIGMSG */
u_int u_lastrcvsig;
char u_sleep_sig;
/* c-startup stuff */
jmp_buf u_jmp_buf;
char *u_argline;
u_int u_arglinelen;
int u_expand_cmd_line;
struct atexit *u_atexit;
char u_getenv_buf[255];
UBYTE u_otask_flags;
void (*u_olaunch)();
APTR u_otrap_code;
APTR u_otrap_data;
struct Interrupt u_itimerint; /* 1 interrupt / task */
int p_pgrp; /* process group */
char *u_strtok_last; /* moved with 37.8 */
/* vfork() support */
struct MinList p_zombies; /* list of death messages */
int p_zombie_sig; /* signal to set when a child died */
struct Process *p_pptr; /* parent */
struct Process *p_cptr; /* last recently created child */
struct Process *p_osptr; /* older sybling */
struct Process *p_ysptr; /* younger sybling */
struct vfork_msg *p_vfork_msg;
#if 0
/* moved to global space (ix_async_mp) */
struct MsgPort *u_async_mp; /* PA_SOFTINT message port */
#else
long u_rese0;
#endif
void (*u_oswitch)();
/* stdio support comes here */
char u_tmpnam_buf[MAXPATHLEN]; /* quite large.. */
#include <glue.h>
struct glue u_sglue;
/* the 3 `standard' FILE pointers (!) are here */
void *u_sF[3];
/* vfork() support #2 */
void *u_save_sp; /* when vfork'd, this is the `real' sp */
jmp_buf u_vfork_frame; /* for the parent in vfork () */
u_int u_mini_stack[1000]; /* 4K stack while in vfork () */
/* stack watcher. When usp < u_red_zone && ix.ix_watch_stack -> SIGSEGV */
void *u_red_zone;
/* base relative support. This even works for pure programs ! */
u_int u_a4;
/* currently there's just 1, meaning don't trace me */
u_int u_trace_flags;
/* this is for getmntinfo() */
struct statfs *u_mntbuf;
int u_mntsize;
long u_bufsize;
/* this is for SIGWINCH support. */
struct IOStdReq *u_idev_req;
struct Window *u_window; /* the watched window */
struct Interrupt u_idev_int;
/* for `ps' (or dump as it's called for now.. ) */
char *p_wmesg;
/* new support for `real' process groups, control ttys etc.. */
struct user *p_pgrpnxt;
struct pgrp *p_pgrpptr;
struct Process *p_exec_proc; /* to get back to struct Process */
/* to be able to switch memory lists on the fly, as required when vfork'd
processes are supposed to allocate memory from their parents pool until
they detach. */
struct malloc_data *u_mdp;
/* data needed for network support */
int u_sigurg;
int u_sigio;
void *u_InetBase;
};
/* flag codes */
#define SLOAD 0x0000001 /* in core */
#define SSYS 0x0000002 /* swapper or pager process */
#define SLOCK 0x0000004 /* process being swapped out */
#define SSWAP 0x0000008 /* save area flag */
#define STRC 0x0000010 /* process is being traced */
#define SWTED 0x0000020 /* parent has been told that this process stopped */
#define SULOCK 0x0000040 /* user settable lock in core */
#define SNOCLDSTOP 0x0000080 /* tc_Launch has to take a signal next time */
#define SFREEA4 0x0000100 /* we allocated memory for a4, free it */
#define SOMASK 0x0000200 /* restore old mask after taking signal */
#define SWEXIT 0x0000400 /* working on exiting */
#define SPHYSIO 0x0000800 /* doing physical i/o (bio.c) */
#define SVFORK 0x0001000 /* process resulted from vfork() */
#define SVFDONE 0x0002000 /* another vfork flag */
#define SNOVM 0x0004000 /* no vm, parent in a vfork() */
#define SPAGI 0x0008000 /* init data space on demand, from inode */
#define SSEQL 0x0010000 /* user warned of sequential vm behavior */
#define SUANOM 0x0020000 /* user warned of random vm behavior */
#define STIMO 0x0040000 /* timing out during sleep */
#define SORPHAN 0x0080000 /* process is orphaned (can't be ^Z'ed) */
#define STRACNG 0x0100000 /* process is tracing another process */
#define SOWEUPC 0x0200000 /* owe process an addupc() call at next ast */
#define SSEL 0x0400000 /* selecting; wakeup/waiting danger */
#define SLOGIN 0x0800000 /* a login process (legit child of init) */
/* stat codes */
#define SSLEEP 1 /* awaiting an event */
#define SWAIT 2 /* (abandoned state) */
#define SRUN 3 /* running */
#define SIDL 4 /* intermediate state in process creation */
#define SZOMB 5 /* has exited, waiting for parent to pick up status */
#define SSTOP 6 /* stopped */