minix/servers/is/dmp_ds.c
Ben Gras 3512a86b44 . DS understands publishing and subscribing where keys are in string
form. Subscriptions are regular expressions.
 . different types are stored per key; currently u32 and/or string.
   the same key can be referenced (publish, subscribe, check) as any type.
 . notify()s are sent when subscriptions are triggered (publishing or
   updating of matching keys); optionally, a subscribe flag sends
   updates for all matching keys at subscription time, instead of only
   after updates after subscribing
 . all interfacing to ds is in /usr/src/lib/syslib/ds.c.
 . subscribe is ds_subscribe
   publish functions are ds_publish_<type>
   retrieve functions are ds_retrieve_<type> (one-time retrieval of a value)
   check functions are ds_check_<type> (check for updated key caller
      subscribes to not yet checked for, or ESRCH for none)
 . ramdisk driver updated with new ds interface
2006-07-13 14:50:23 +00:00

66 lines
1.5 KiB
C

/* This file contains procedures to dump DS data structures.
*
* The entry points into this file are
* data_store_dmp: display DS data store contents
*
* Created:
* Oct 18, 2005: by Jorrit N. Herder
*/
#include "inc.h"
#include "../ds/store.h"
PUBLIC struct data_store store[NR_DS_KEYS];
FORWARD _PROTOTYPE( char *s_flags_str, (int flags) );
/*===========================================================================*
* data_store_dmp *
*===========================================================================*/
PUBLIC void data_store_dmp()
{
struct data_store *dsp;
int i,j, n=0, s;
static int prev_i=0;
printf("Data Store (DS) contents dump\n");
if((s=getsysinfo(DS_PROC_NR, SI_DATA_STORE, store)) != OK) {
printf("Couldn't talk to DS: %d.\n", s);
return;
}
printf("slot key type value\n");
for (i=prev_i; i<NR_DS_KEYS; i++) {
dsp = &store[i];
if (! dsp->ds_flags & DS_IN_USE) continue;
if (++n > 22) break;
printf("%3d %-20s ",
i, dsp->ds_key);
if(dsp->ds_flags & DS_TYPE_U32) {
printf("u32 %lu\n", dsp->ds_val.ds_val_u32);
} else if(dsp->ds_flags & DS_TYPE_STR) {
printf("str \"%s\"\n", dsp->ds_val.ds_val_str);
} else {
printf("Bogus type\n");
}
}
if (i >= NR_DS_KEYS) i = 0;
else printf("--more--\r");
prev_i = i;
}
PRIVATE char *s_flags_str(int flags)
{
static char str[5];
str[0] = (flags & DS_IN_USE) ? 'U' : '-';
str[1] = (flags & DS_PUBLIC) ? 'P' : '-';
str[2] = '-';
str[3] = '\0';
return(str);
}