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Merge in Lite2: LIST changes
stylistic changes to function prototypes Note: sizeof(struct proc) is now exactly 256 bytes, no room to spare.
This commit is contained in:
Jeffrey Hsu
parent
b75356e1ac
commit
2592172e85
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=14530
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@ -35,8 +35,8 @@
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)proc.h 8.8 (Berkeley) 1/21/94
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* $Id: proc.h,v 1.21 1996/02/25 09:28:06 hsu Exp $
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* @(#)proc.h 8.15 (Berkeley) 5/19/95
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* $Id: proc.h,v 1.23 1996/03/10 23:48:35 hsu Exp $
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*/
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#ifndef _SYS_PROC_H_
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@ -46,6 +46,7 @@
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#include <sys/rtprio.h> /* For struct rtprio. */
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#include <sys/select.h> /* For struct selinfo. */
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#include <sys/time.h> /* For structs itimerval, timeval. */
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#include <sys/queue.h>
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/*
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* One structure allocated per session.
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@ -62,8 +63,8 @@ struct session {
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* One structure allocated per process group.
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*/
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struct pgrp {
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struct pgrp *pg_hforw; /* Forward link in hash bucket. */
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struct proc *pg_mem; /* Pointer to pgrp members. */
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LIST_ENTRY(pgrp) pg_hash; /* Hash chain. */
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LIST_HEAD(, proc) pg_members; /* Pointer to pgrp members. */
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struct session *pg_session; /* Pointer to session. */
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pid_t pg_id; /* Pgrp id. */
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int pg_jobc; /* # procs qualifying pgrp for job control */
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@ -83,8 +84,7 @@ struct pgrp {
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struct proc {
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struct proc *p_forw; /* Doubly-linked run/sleep queue. */
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struct proc *p_back;
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struct proc *p_next; /* Linked list of active procs */
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struct proc **p_prev; /* and zombies. */
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LIST_ENTRY(proc) p_list; /* List of all processes. */
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/* substructures: */
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struct pcred *p_cred; /* Process owner's identity. */
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@ -102,15 +102,14 @@ struct proc {
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char p_pad1[3];
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pid_t p_pid; /* Process identifier. */
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struct proc *p_hash; /* Hashed based on p_pid for kill+exit+... */
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struct proc *p_pgrpnxt; /* Pointer to next process in process group. */
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struct proc *p_pptr; /* Pointer to process structure of parent. */
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struct proc *p_osptr; /* Pointer to older sibling processes. */
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LIST_ENTRY(proc) p_pglist; /* List of processes in pgrp. */
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struct proc *p_pptr; /* Pointer to parent process. */
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LIST_ENTRY(proc) p_sibling; /* List of sibling processes. */
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LIST_HEAD(, proc) p_children; /* Pointer to list of children. */
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/* The following fields are all zeroed upon creation in fork. */
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#define p_startzero p_ysptr
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struct proc *p_ysptr; /* Pointer to younger siblings. */
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struct proc *p_cptr; /* Pointer to youngest living child. */
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#define p_startzero p_oppid
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pid_t p_oppid; /* Save parent pid during ptrace. XXX */
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int p_dupfd; /* Sideways return value from fdopen. XXX */
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@ -139,8 +138,17 @@ struct proc {
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char p_lock; /* Process lock (prevent swap) count. */
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char p_pad2[3]; /* alignment */
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short p_locks; /* DEBUG: lockmgr count of held locks */
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short p_simple_locks; /* DEBUG: count of held simple locks */
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/* End area that is zeroed on creation. */
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#define p_endzero p_startcopy
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#define p_endzero p_hash.le_next
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/*
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* Not copied, not zero'ed.
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* Belongs after p_pid, but here to avoid shifting proc elements.
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*/
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LIST_ENTRY(proc) p_hash; /* Hash chain. */
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/* The following fields are all copied upon creation in fork. */
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#define p_startcopy p_sigmask
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@ -194,14 +202,17 @@ struct proc {
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#define P_TRACED 0x00800 /* Debugged process being traced. */
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#define P_WAITED 0x01000 /* Debugging process has waited for child. */
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#define P_WEXIT 0x02000 /* Working on exiting. */
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#define P_EXEC 0x04000 /* Process called exec. */
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#define P_SWAPPING 0x40000 /* Process is being swapped. */
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#define P_NOSWAP 0x08000 /* Flag to prevent swap out. */
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#define P_EXEC 0x04000 /* Process called exec. */
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/* Should probably be changed into a hold count. */
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#define P_NOSWAP 0x08000 /* Another flag to prevent swap out. */
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#define P_PHYSIO 0x10000 /* Doing physical I/O. */
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/* Should be moved to machine-dependent areas. */
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#define P_OWEUPC 0x20000 /* Owe process an addupc() call at next ast. */
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#define P_SWAPPING 0x40000 /* Process is being swapped. */
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/*
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* MOVE TO ucred.h?
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*
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@ -225,7 +236,6 @@ struct pcred {
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*/
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#define PID_MAX 30000
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#define NO_PID 30001
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#define PIDHASH(pid) ((pid) & pidhashmask)
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#define SESS_LEADER(p) ((p)->p_session->s_leader == (p))
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#define SESSHOLD(s) ((s)->s_count++)
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@ -241,16 +251,22 @@ struct pcred {
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}
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#define PRELE(p) (--(p)->p_lock)
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extern struct proc *pidhash[]; /* In param.c. */
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extern struct pgrp *pgrphash[]; /* In param.c. */
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#define PIDHASH(pid) (&pidhashtbl[(pid) & pidhash])
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extern LIST_HEAD(pidhashhead, proc) *pidhashtbl;
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extern u_long pidhash;
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#define PGRPHASH(pgid) (&pgrphashtbl[(pgid) & pgrphash])
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extern LIST_HEAD(pgrphashhead, pgrp) *pgrphashtbl;
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extern u_long pgrphash;
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extern struct proc *curproc; /* Current running proc. */
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extern struct proc proc0; /* Process slot for swapper. */
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extern int nprocs, maxproc; /* Current and max number of procs. */
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extern int maxprocperuid; /* Max procs per uid. */
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extern int pidhashmask; /* In param.c. */
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extern volatile struct proc *allproc; /* List of active procs. */
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extern struct proc *zombproc; /* List of zombie procs. */
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LIST_HEAD(proclist, proc);
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extern struct proclist allproc; /* List of all processes. */
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extern struct proclist zombproc; /* List of zombie processes. */
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extern struct proc *initproc, *pageproc; /* Process slots for init, pager. */
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#define NQS 32 /* 32 run queues. */
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@ -263,10 +279,16 @@ struct prochd {
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struct proc *ph_rlink;
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};
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int chgproccnt __P((uid_t, int));
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struct proc *pfind __P((pid_t)); /* Find process by id. */
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struct pgrp *pgfind __P((pid_t)); /* Find process group by id. */
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int chgproccnt __P((uid_t uid, int diff));
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int enterpgrp __P((struct proc *p, pid_t pgid, int mksess));
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void fixjobc __P((struct proc *p, struct pgrp *pgrp, int entering));
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int inferior __P((struct proc *p));
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int leavepgrp __P((struct proc *p));
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void mi_switch __P((void));
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void procinit __P((void));
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void resetpriority __P((struct proc *));
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void roundrobin __P((void *));
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void schedcpu __P((void *));
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@ -281,13 +303,9 @@ void wakeup __P((void *chan));
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__dead void cpu_exit __P((struct proc *)) __dead2;
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__dead void exit1 __P((struct proc *, int)) __dead2;
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void fixjobc __P((struct proc *, struct pgrp *, int));
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int leavepgrp __P((struct proc *));
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int enterpgrp __P((struct proc *, pid_t, int));
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int trace_req __P((struct proc *));
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void cpu_wait __P((struct proc *));
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int cpu_coredump __P((struct proc *, struct vnode *, struct ucred *));
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int inferior __P((struct proc *));
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#endif /* KERNEL */
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#endif /* !_SYS_PROC_H_ */
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