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Renamed system library functionality.

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Updated debug dumps of IS server.
This commit is contained in:
Jorrit Herder 2005-07-14 15:16:12 +00:00
parent 279250889f
commit 570eac1f53
23 changed files with 168 additions and 93 deletions
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7
servers/fs/main.c
View file

@ -61,14 +61,17 @@ PUBLIC void main()
super_user = (fp->fp_effuid == SU_UID ? TRUE : FALSE); /* su? */
/* Check for special control messages first. */
#if DEAD_CODE
if (call_nr == HARD_STOP) {
do_sync();
sys_exit(0); /* never returns */
} else if(call_nr == SYN_ALARM) {
} else
#endif
if(call_nr == SYN_ALARM) {
/* Not a user request; system has expired one of our timers,
* currently only in use for select(). Check it.
*/
fs_expire_timers(m_in.NOTIFY_ARG);
fs_expire_timers(m_in.NOTIFY_TIMESTAMP);
} else if(call_nr == DEV_SELECTED) {
/* Device notify()s us of fd that has become usable. */
select_notified(&m_in);

4
servers/fs/select.c
View file

@ -9,7 +9,6 @@
* 6 june 2005 Created (Ben Gras)
*/
/* TODO: check if close (pipe?) / exit works;
* some printf()s are serious errors;
* check combinations of cases listen in open group select
@ -21,11 +20,10 @@
#define DEBUG_SELECT 0
#include "fs.h"
#include "dmap.h"
#include "select.h"
#include "file.h"
#include "inode.h"
#include "fs_timers.h"
#include "dmap.h"
#include <sys/time.h>
#include <sys/select.h>

7
servers/fs/timers.c
View file

@ -2,9 +2,8 @@
*/
#include "fs.h"
#include "fs_timers.h"
#define VERBOSE 1
#define VERBOSE 0
#include <timers.h>
#include <minix/syslib.h>
@ -17,7 +16,7 @@ PUBLIC void fs_set_timer(timer_t *tp, int ticks, tmr_func_t watchdog, int arg)
int r;
clock_t now, old_head = 0, new_head;
if((r = sys_getuptime(&now)) != OK)
if((r = getuptime(&now)) != OK)
panic(__FILE__, "FS couldn't get uptime from system task.", NO_NUM);
tmr_inittimer(tp);
@ -45,8 +44,8 @@ PUBLIC void fs_expire_timers(clock_t now)
if(new_head > 0) {
if(sys_syncalrm(SELF, new_head, 1) != OK)
panic(__FILE__, "FS expire timer couldn't set synchronous alarm.", NO_NUM);
else
#if VERBOSE
else
printf("timers: after expiry, set synalarm to %d\n", new_head);
#endif
}

2
servers/fs/utility.c
View file

@ -34,7 +34,7 @@ PUBLIC time_t clock_time()
register int k;
clock_t uptime;
if ( (k=sys_getuptime(&uptime)) != OK) panic(__FILE__,"clock_time err", k);
if ( (k=getuptime(&uptime)) != OK) panic(__FILE__,"clock_time err", k);
return( (time_t) (boottime + (uptime/HZ)));
}

2
servers/inet/clock.c
View file

@ -58,7 +58,7 @@ PUBLIC time_t get_time()
curr_time= mess.NEW_TIME;
#else /* Minix 3 */
int s;
if ((s=sys_getuptime(&curr_time)) != OK)
if ((s=getuptime(&curr_time)) != OK)
ip_panic(("can't read clock"));
#endif
assert(curr_time >= prev_time);

10
servers/inet/inet.c
View file

@ -103,7 +103,6 @@ PUBLIC void main()
u8_t randbits[32];
struct timeval tv;
printf("Hello, in inet\n");
#if DEBUG
printf("Starting inet...\n");
printf("%s\n", version);
@ -247,18 +246,11 @@ PUBLIC void main()
mq_free(mq);
}
#else /* Minix 3 */
else if (mq->mq_mess.m_type & NOTIFICATION)
{
if (mq->mq_mess.m_type == SYN_ALARM)
else if (mq->mq_mess.m_type == SYN_ALARM)
{
clck_tick(&mq->mq_mess);
mq_free(mq);
}
else if (mq->mq_mess.m_type == HARD_STOP)
{
sys_exit(0);
}
}
#endif
else
{

1
servers/inet/inet_config.c
View file

@ -20,6 +20,7 @@ Copyright 1995 Philip Homburg
#include <sys/types.h>
#include <sys/stat.h>
#include <minix/type.h>
#include <minix/utils.h>
#include <minix/syslib.h>
#include "inet_config.h"

7
servers/is/diag.c
View file

@ -4,6 +4,7 @@
#include "is.h"
#include "../../kernel/const.h"
#include "../../kernel/config.h"
#include "../../kernel/type.h"
/*==========================================================================*
@ -20,8 +21,6 @@ PRIVATE void log_message(char *buf)
_sendrec(LOG_PROC_NR, &m);
#endif
return;
}
@ -124,9 +123,7 @@ PUBLIC int do_diagnostics(message *m)
}
if(i > 0) {
/* This is safe; if i were too large,
* this would have been done above.
*/
/* This is safe; above code ensures i doesn't exceed upper bound. */
diagbuf[i] = '\0';
log_message(diagbuf);
}

12
servers/is/dmp.c
View file

@ -32,7 +32,7 @@ PUBLIC int do_fkey_pressed(message *m)
if (pressed(F1)) proctab_dmp();
if (pressed(F2)) memmap_dmp();
if (pressed(F3)) image_dmp();
if (pressed(F4)) sendmask_dmp();
if (pressed(F4)) privileges_dmp();
if (pressed(F5)) monparams_dmp();
if (pressed(F6)) irqtab_dmp();
if (pressed(F7)) kmessages_dmp();
@ -42,17 +42,15 @@ PUBLIC int do_fkey_pressed(message *m)
if (pressed(F12)) sched_dmp();
if (pressed(F9)) {
printf("IS server going into infinite loop, press F9 to break\n");
printf("Five times any key is fine as well ...\n");
s = 0;
printf("IS server going into infinite loop... hit 5x a function key\n");
printf("Five times a function key is fine as well ...\n");
while(TRUE) {
if (OK == nb_receive(ANY, m)) {
s ++;
if (pressed(F9) || s >= 5 ) break;
else printf("IS server in infinite loop, press F9 to break\n");
if (s++ >= 5 ) break;
}
}
printf("IS server back to normal ... \n");
return(EDONTREPLY);
}
/* Also check Shift F1-F6 keys. */

76
servers/is/dmp_kernel.c
View file

@ -4,9 +4,10 @@
#include <timers.h>
#include <ibm/interrupt.h>
#include "../../kernel/const.h"
#include "../../kernel/config.h"
#include "../../kernel/debug.h"
#include "../../kernel/type.h"
#include "../../kernel/proc.h"
#include "../../kernel/sendmask.h"
#define click_to_round_k(n) \
((unsigned) ((((unsigned long) (n) << CLICK_SHIFT) + 512) / 1024))
@ -20,7 +21,8 @@ FORWARD _PROTOTYPE( char *proc_name, (int proc_nr) );
* so that most macros and definitions from proc.h also apply here.
*/
PUBLIC struct proc proc[NR_TASKS + NR_PROCS];
PUBLIC struct system_image image[IMAGE_SIZE];
PUBLIC struct priv priv[NR_SYS_PROCS];
PUBLIC struct system_image image[NR_BOOT_PROCS];
@ -29,15 +31,15 @@ PUBLIC struct system_image image[IMAGE_SIZE];
*===========================================================================*/
PUBLIC void timing_dmp()
{
#if ! ENABLE_LOCK_TIMING
printf("Enable the ENABLE_LOCK_TIMING definition in <minix/config.h>\n");
#if ! DEBUG_TIME_LOCKS
printf("Enable the DEBUG_TIME_LOCKS definition in src/kernel/config.h\n");
#else
static struct lock_timedata timingdata[TIMING_CATEGORIES];
static struct lock_timingdata timingdata[TIMING_CATEGORIES];
int r, c, f, skipped = 0, printed = 0, maxlines = 23, x = 0;
static int offsetlines = 0;
if ((r = sys_getlocktimings(timingdata)) != OK) {
report("warning: couldn't get copy of lock timings", r);
if ((r = sys_getlocktimings(&timingdata[0])) != OK) {
report("IS","warning: couldn't get copy of lock timings", r);
return;
}
@ -190,10 +192,10 @@ PUBLIC void image_dmp()
}
printf("Image table dump showing all processes included in system image.\n");
printf("---name-- -nr- -flags- -q- ----pc- -stack- ------sendmask-------\n");
for (i=0; i<IMAGE_SIZE; i++) {
for (i=0; i<NR_BOOT_PROCS; i++) {
ip = &image[i];
for (j=-NR_TASKS; j<INIT_PROC_NR+2; j++)
maskstr[j+NR_TASKS] = (isallowed(ip->sendmask, j)) ? '1' : '0';
maskstr[j+NR_TASKS] = '0';
maskstr[j+NR_TASKS] = '\0';
printf("%8s %4d 0x%02x %3d %7lu %7lu %s\n",
ip->proc_name, ip->proc_nr, ip->flags, ip->priority,
@ -293,13 +295,59 @@ PUBLIC void kenv_dmp()
printf("- nr_tasks: %3u\n", kinfo.nr_tasks);
printf("- release: %.6s\n", kinfo.release);
printf("- version: %.6s\n", kinfo.version);
#if ENABLE_K_LOCKCHECK
#if DEBUG_LOCK_CHECK
printf("- relocking: %d\n", kinfo.relocking);
#endif
printf("\n");
}
/*===========================================================================*
* privileges_dmp *
*===========================================================================*/
PUBLIC void privileges_dmp()
{
register struct proc *rp;
static struct proc *oldrp = BEG_PROC_ADDR;
register struct priv *sp;
int r, i,j, n = 0;
/* First obtain a fresh copy of the current process and system table. */
if ((r = sys_getprivtab(priv)) != OK) {
report("IS","warning: couldn't get copy of system privileges table", r);
return;
}
if ((r = sys_getproctab(proc)) != OK) {
report("IS","warning: couldn't get copy of process table", r);
return;
}
printf("\n--nr-id-name---- -sanity- -flags- -sc-\n");
for (rp = oldrp; rp < END_PROC_ADDR; rp++) {
if (isemptyp(rp)) continue;
if (++n > 23) break;
if (proc_nr(rp) == IDLE) printf("(%2d) ", proc_nr(rp));
else if (proc_nr(rp) < 0) printf("[%2d] ", proc_nr(rp));
else printf(" %2d ", proc_nr(rp));
r = -1;
for (sp = &priv[0]; sp < &priv[NR_SYS_PROCS]; sp++)
if (sp->s_proc_nr == rp->p_nr) { r ++; break; }
if (r == -1) {
printf("... warning, no privileges found!\n");
continue;
}
printf("(%02u) %-7.7s %3x %02.2u",
sp->s_id,
rp->p_name,
sp->s_flags, sp->s_call_mask
);
printf("\n");
}
if (rp == END_PROC_ADDR) rp = BEG_PROC_ADDR; else printf("--more--\r");
oldrp = rp;
}
/*===========================================================================*
* sendmask_dmp *
@ -322,6 +370,7 @@ PUBLIC void sendmask_dmp()
printf("The rows of bits indicate to which processes each process may send.");
printf("\n\n");
#if DEAD_CODE
printf(" ");
for (j=proc_nr(BEG_PROC_ADDR); j< INIT_PROC_NR+1; j++) {
printf("%3d", j);
@ -346,6 +395,7 @@ PUBLIC void sendmask_dmp()
if (rp == END_PROC_ADDR) { printf("\n"); rp = BEG_PROC_ADDR; }
else printf("--more--\r");
oldrp = rp;
#endif
}
@ -369,7 +419,7 @@ PUBLIC void proctab_dmp()
return;
}
printf("\n--nr-name-flags-prior-quant-##-sc- -user---sys- -text---data---size- -rts flags-\n");
printf("\n--nr-name---- -prior-quant-##- -user---sys- -text---data---size- -rts flags-\n");
for (rp = oldrp; rp < END_PROC_ADDR; rp++) {
if (isemptyp(rp)) continue;
@ -381,13 +431,11 @@ PUBLIC void proctab_dmp()
if (proc_nr(rp) == IDLE) printf("(%2d) ", proc_nr(rp));
else if (proc_nr(rp) < 0) printf("[%2d] ", proc_nr(rp));
else printf(" %2d ", proc_nr(rp));
printf("%-7.7s %2x %02u/%02u %02d/%02d %02u %02.2x %6lu%6lu %6uK%6uK%6uK %3x",
printf(" %-7.7s %02u/%02u %02d/%02d %02u %6lu%6lu %6uK%6uK%6uK %3x",
rp->p_name,
rp->p_flags,
rp->p_priority, rp->p_max_priority,
rp->p_sched_ticks, rp->p_quantum_size,
rp->p_full_quantums,
(char) rp->p_call_mask,
rp->p_user_time, rp->p_sys_time,
click_to_round_k(text), click_to_round_k(data),
click_to_round_k(size),

1
servers/is/dmp_pm.c
View file

@ -9,6 +9,7 @@
#include "is.h"
#include "../pm/mproc.h"
#include <timers.h>
PUBLIC struct mproc mproc[NR_PROCS];

17
servers/is/main.c
View file

@ -62,15 +62,12 @@ PUBLIC void main(void)
case FKEY_PRESSED:
result = do_fkey_pressed(&m_in);
break;
case HARD_STOP:
sys_exit(0);
/* never reached */
continue;
default:
default: {
printf("Warning, IS got unexpected request %d from %d\n",
m_in.m_type, m_in.m_source);
result = EINVAL;
}
}
/* Finally send reply message, unless disabled. */
if (result != EDONTREPLY) {
@ -88,10 +85,10 @@ int sig; /* signal number */
{
/* Expect a SIGTERM signal when this server must shutdown. */
if (sig == SIGTERM) {
printf("Shutting down IS server.\n");
printf("Shutting down IS server due to SIGTERM.\n");
exit(0);
} else {
printf("IS got unknown signal\n");
printf("IS got signal %d\n", sig);
}
}
@ -106,15 +103,12 @@ PRIVATE void init_server()
int i, s;
struct sigaction sigact;
#if DEAD_CODE
/* Install signal handler.*/
sigact.sa_handler = signal_handler;
sigact.sa_mask = ~0; /* block all other signals */
sigact.sa_flags = 0; /* default behaviour */
printf("IS calls sigaction()\n");
if (sigaction(SIGTERM, &sigact, NULL) != OK)
report("IS","warning, sigaction() failed", errno);
#endif
/* Set key mappings. IS takes all of F1-F12 and Shift+F1-F6 . */
fkeys = sfkeys = 0;
@ -122,9 +116,6 @@ PRIVATE void init_server()
for (i=1; i<= 6; i++) bit_set(sfkeys, i);
if ((s=fkey_map(&fkeys, &sfkeys)) != OK)
report("IS", "warning, sendrec failed:", s);
/* Display status message ... */
report("IS", "information service is alive and kicking", NO_NUM);
}
/*===========================================================================*

1
servers/is/proto.h
View file

@ -18,6 +18,7 @@ _PROTOTYPE( int do_fkey_pressed, (message *m) );
/* dmp_kernel.c */
_PROTOTYPE( void proctab_dmp, (void) );
_PROTOTYPE( void memmap_dmp, (void) );
_PROTOTYPE( void privileges_dmp, (void) );
_PROTOTYPE( void sendmask_dmp, (void) );
_PROTOTYPE( void image_dmp, (void) );
_PROTOTYPE( void irqtab_dmp, (void) );

4
servers/pm/Makefile
View file

@ -13,13 +13,13 @@ CC = exec cc
CFLAGS = -I$i
LDFLAGS = -i
OBJ = main.o forkexit.o break.o exec.o time.o \
OBJ = main.o forkexit.o break.o exec.o time.o timers.o \
signal.o alloc.o utility.o table.o trace.o getset.o misc.o
# build local binary
all build: $(SERVER)
$(SERVER): $(OBJ)
$(CC) -o $@ $(LDFLAGS) $(OBJ) -lsys -lutils
$(CC) -o $@ $(LDFLAGS) $(OBJ) -lsys -lutils -ltimers
install -S 256w $@
# install with other servers

1
servers/pm/alloc.c
View file

@ -22,6 +22,7 @@
#include <stdlib.h>
#include "mproc.h"
#include "../../kernel/const.h"
#include "../../kernel/config.h"
#include "../../kernel/type.h"
#define NR_HOLES (2*NR_PROCS) /* max # entries in hole table */

2
servers/pm/exec.c
View file

@ -371,7 +371,7 @@ phys_bytes tot_bytes; /* total memory to allocate, including gap */
base += bss_offset;
bytes -= bss_offset;
if ((s=sys_physzero(base, bytes)) != OK) {
if ((s=sys_memset(0, base, bytes)) != OK) {
panic(__FILE__,"new_mem can't zero", s);
}

2
servers/pm/forkexit.c
View file

@ -155,7 +155,7 @@ int exit_status; /* the process' exit status (for parent) */
/* Tell the kernel and FS that the process is no longer runnable. */
DEBUG(proc_nr == PRINTER, printf("PM: telling FS and kernel about xit...\n"));
tell_fs(EXIT, proc_nr, 0, 0); /* file system can free the proc slot */
sys_xit(proc_nr);
sys_exit(proc_nr);
/* Pending reply messages for the dead process cannot be delivered. */
rmp->mp_flags &= ~REPLY;

19
servers/pm/main.c
View file

@ -23,6 +23,7 @@
#include "param.h"
#include "../../kernel/const.h"
#include "../../kernel/config.h"
#include "../../kernel/type.h"
FORWARD _PROTOTYPE( void get_work, (void) );
@ -51,10 +52,9 @@ PUBLIC void main()
get_work(); /* wait for an PM system call */
/* Check for system notifications first. Special cases. */
if (call_nr == HARD_STOP) { /* MINIX is shutting down */
check_sig(-1, SIGKILL); /* kill all processes */
sys_exit(0);
/* never reached */
if (call_nr == SYN_ALARM) {
pm_expire_timers(m_in.NOTIFY_TIMESTAMP);
result = SUSPEND; /* don't reply */
} else if (call_nr == KSIG_PENDING) { /* signals pending */
(void) ksig_pending();
result = SUSPEND; /* don't reply */
@ -137,7 +137,7 @@ PRIVATE void pm_init()
{
/* Initialize the process manager. */
int key, i, s;
static struct system_image image[IMAGE_SIZE];
static struct system_image image[NR_BOOT_PROCS];
register struct system_image *ip;
static char core_sigs[] = { SIGQUIT, SIGILL, SIGTRAP, SIGABRT,
SIGEMT, SIGFPE, SIGUSR1, SIGSEGV, SIGUSR2 };
@ -150,6 +150,11 @@ PRIVATE void pm_init()
struct mem_map mem_map[NR_LOCAL_SEGS];
struct memory mem_chunks[NR_MEMS];
/* Initialize process table, including timers. */
for (rmp=&mproc[0]; rmp<&mproc[NR_PROCS]; rmp++) {
tmr_inittimer(&rmp->mp_timer);
}
/* Build the set of signals which cause core dumps, and the set of signals
* that are by default ignored.
*/
@ -182,7 +187,7 @@ PRIVATE void pm_init()
if (OK != (s=sys_getimage(image)))
panic(__FILE__,"PM: warning, couldn't get image table: %d\n", s);
procs_in_use = 0; /* start populating table */
for (ip = &image[0]; ip < &image[IMAGE_SIZE]; ip++) {
for (ip = &image[0]; ip < &image[NR_BOOT_PROCS]; ip++) {
if (ip->proc_nr >= 0) { /* task have negative nrs */
procs_in_use += 1; /* found user process */
@ -223,8 +228,6 @@ PRIVATE void pm_init()
mproc[PM_PROC_NR].mp_pid = PM_PID;
mproc[PM_PROC_NR].mp_parent = PM_PROC_NR;
sigfillset(&mproc[PM_PROC_NR].mp_ignore);
sigfillset(&mproc[PM_PROC_NR].mp_sigmask);
/* Tell FS that no more system processes follow and synchronize. */
mess.PR_PROC_NR = NONE;

2
servers/pm/mproc.h
View file

@ -4,6 +4,7 @@
* systems have tables that are also indexed by process, with the contents
* of corresponding slots referring to the same process in all three.
*/
#include <timers.h>
EXTERN struct mproc {
struct mem_map mp_seg[NR_LOCAL_SEGS]; /* points to text, data, stack */
@ -37,6 +38,7 @@ EXTERN struct mproc {
sigset_t mp_sigpending; /* pending signals to be handled */
struct sigaction mp_sigact[_NSIG + 1]; /* as in sigaction(2) */
vir_bytes mp_sigreturn; /* address of C library __sigreturn function */
struct timer mp_timer; /* watchdog timer for alarm(2) */
/* Backwards compatibility for signals. */
sighandler_t mp_func; /* all sigs vectored to a single user fcn */

8
servers/pm/proto.h
View file

@ -5,6 +5,8 @@ struct stat;
struct mem_map;
struct memory;
#include <timers.h>
/* alloc.c */
_PROTOTYPE( phys_clicks alloc_mem, (phys_clicks clicks) );
_PROTOTYPE( void free_mem, (phys_clicks base, phys_clicks clicks) );
@ -88,6 +90,12 @@ _PROTOTYPE( int do_time, (void) );
_PROTOTYPE( int do_times, (void) );
_PROTOTYPE( int do_gettimeofday, (void) );
/* timers.c */
_PROTOTYPE( void pm_set_timer, (timer_t *tp, int delta,
tmr_func_t watchdog, int arg));
_PROTOTYPE( void pm_expire_timers, (clock_t now));
_PROTOTYPE( void pm_cancel_timer, (timer_t *tp));
/* trace.c */
_PROTOTYPE( int do_trace, (void) );
_PROTOTYPE( void stop_proc, (struct mproc *rmp, int sig_nr) );

63
servers/pm/signal.c
View file

@ -1,3 +1,4 @@
#define NEW_AL 1
/* This file handles signals, which are asynchronous events and are generally
* a messy and unpleasant business. Signals can be generated by the KILL
* system call, or from the keyboard (SIGINT) or from the clock (SIGALRM).
@ -36,7 +37,8 @@
FORWARD _PROTOTYPE( void dump_core, (struct mproc *rmp) );
FORWARD _PROTOTYPE( void unpause, (int pro) );
FORWARD _PROTOTYPE( void handle_ksig, (int proc_nr, sigset_t sig_map) );
FORWARD _PROTOTYPE( void handle_sig, (int proc_nr, sigset_t sig_map) );
FORWARD _PROTOTYPE( void cause_sigalrm, (struct timer *tp) );
/*===========================================================================*
@ -208,11 +210,12 @@ PUBLIC int ksig_pending()
sigset_t sig_map;
while (TRUE) {
sys_getsig(&proc_nr, &sig_map); /* get an arbitrary pending signal */
sys_getksig(&proc_nr, &sig_map); /* get an arbitrary pending signal */
if (NONE == proc_nr) { /* stop if no more pending signals */
break;
} else {
handle_ksig(proc_nr, sig_map); /* handle the receive signal */
handle_sig(proc_nr, sig_map); /* handle the received signal */
sys_endksig(proc_nr); /* tell kernel it's done */
}
}
return(SUSPEND); /* prevents sending reply */
@ -220,9 +223,9 @@ PUBLIC int ksig_pending()
/*===========================================================================*
* handle_ksig *
* handle_sig *
*===========================================================================*/
PRIVATE void handle_ksig(proc_nr, sig_map)
PRIVATE void handle_sig(proc_nr, sig_map)
int proc_nr;
sigset_t sig_map;
{
@ -233,7 +236,7 @@ sigset_t sig_map;
rmp = &mproc[proc_nr];
if ((rmp->mp_flags & (IN_USE | ZOMBIE)) != IN_USE) return;
proc_id = rmp->mp_pid;
mp = &mproc[0]; /* pretend kernel signals are from PM */
mp = &mproc[0]; /* pretend signals are from PM */
mp->mp_procgrp = rmp->mp_procgrp; /* get process group right */
/* Check each bit in turn to see if a signal is to be sent. Unlike
@ -253,8 +256,7 @@ sigset_t sig_map;
id = -1; break; /* broadcast to all except INIT */
case SIGALRM:
/* Disregard SIGALRM when the target process has not
* requested an alarm. This only applies for a KERNEL
* generated signal.
* requested an alarm.
*/
if ((rmp->mp_flags & ALARM_ON) == 0) continue;
rmp->mp_flags &= ~ALARM_ON;
@ -264,7 +266,6 @@ sigset_t sig_map;
break;
}
check_sig(id, i);
sys_endsig(proc_nr); /* tell kernel it's done */
}
}
@ -290,11 +291,21 @@ int sec; /* how many seconds delay before the signal */
* to turn the timer off when a process exits with the timer still on.
*/
clock_t ticks; /* number of ticks for alarm */
clock_t exptime; /* needed for remaining time on previous alarm */
clock_t uptime; /* current system time */
int remaining; /* previous time left in seconds */
int s;
if (sec != 0) mproc[proc_nr].mp_flags |= ALARM_ON;
else mproc[proc_nr].mp_flags &= ~ALARM_ON;
/* First determine remaining time of previous alarm, if set. */
if (mproc[proc_nr].mp_flags & ALARM_ON) {
if ( (s=getuptime(&uptime)) != OK)
panic(__FILE__,"set_alarm couldn't get uptime", s);
exptime = *tmr_exp_time(&mproc[proc_nr].mp_timer);
remaining = (int) ((exptime - uptime + (HZ-1))/HZ);
if (remaining < 0) remaining = 0;
} else {
remaining = 0;
}
/* Tell the clock task to provide a signal message when the time comes.
*
@ -316,15 +327,35 @@ int sec; /* how many seconds delay before the signal */
if ( (unsigned long) ticks / HZ != (unsigned) sec)
ticks = LONG_MAX; /* eternity (really TMR_NEVER) */
if ((s=sys_signalrm(proc_nr, &ticks)) != OK)
panic(__FILE__,"couldn't set signal alarm", s);
remaining = (int) ((ticks + (HZ-1))/HZ);
if (remaining < 0) remaining = INT_MAX; /* true value is too large */
if (ticks != 0) {
pm_set_timer(&mproc[proc_nr].mp_timer, ticks, cause_sigalrm, proc_nr);
mproc[proc_nr].mp_flags |= ALARM_ON;
} else if (mproc[proc_nr].mp_flags & ALARM_ON) {
pm_cancel_timer(&mproc[proc_nr].mp_timer);
mproc[proc_nr].mp_flags &= ~ALARM_ON;
}
return(remaining);
}
/*===========================================================================*
* cause_sigalrm *
*===========================================================================*/
PRIVATE void cause_sigalrm(tp)
struct timer *tp;
{
int proc_nr;
register struct mproc *rmp;
proc_nr = tmr_arg(tp)->ta_int; /* get process from timer */
rmp = &mproc[proc_nr];
if ((rmp->mp_flags & (IN_USE | ZOMBIE)) != IN_USE) return;
if ((rmp->mp_flags & ALARM_ON) == 0) return;
rmp->mp_flags &= ~ALARM_ON;
check_sig(rmp->mp_pid, SIGALRM);
}
/*===========================================================================*
* do_pause *
*===========================================================================*/

6
servers/pm/time.c
View file

@ -29,7 +29,7 @@ PUBLIC int do_time()
clock_t uptime;
int s;
if ( (s=sys_getuptime(&uptime)) != OK)
if ( (s=getuptime(&uptime)) != OK)
panic(__FILE__,"do_time couldn't get uptime", s);
mp->mp_reply.reply_time = (time_t) (boottime + (uptime/HZ));
@ -52,7 +52,7 @@ PUBLIC int do_stime()
if (mp->mp_effuid != SUPER_USER) {
return(EPERM);
}
if ( (s=sys_getuptime(&uptime)) != OK)
if ( (s=getuptime(&uptime)) != OK)
panic(__FILE__,"do_stime couldn't get uptime", s);
boottime = (long) m_in.stime - (uptime/HZ);
@ -92,7 +92,7 @@ PUBLIC int do_gettimeofday(void)
clock_t uptime;
int s;
if ( (s=sys_getuptime(&uptime)) != OK)
if ( (s=getuptime(&uptime)) != OK)
panic(__FILE__,"do_gettimeofday couldn't get uptime", s);
mp->mp_reply.m2_l1 = boottime + uptime/HZ;

1
servers/pm/utility.c
View file

@ -25,6 +25,7 @@
#include <timers.h>
#include <string.h>
#include "../../kernel/const.h"
#include "../../kernel/config.h"
#include "../../kernel/type.h"
#include "../../kernel/proc.h"