/* Copyright (C) 1998-99 Martin Baulig
This file is part of LibGTop 1.0.
Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
LibGTop is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
LibGTop 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 General Public License
for more details.
You should have received a copy of the GNU General Public License
along with LibGTop; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <glibtop/open.h>
#include <glibtop/cpu.h>
#include <glibtop/error.h>
#include <unistd.h>
#include <dlfcn.h>
#include <sys/types.h>
#include <sys/processor.h>
#include <glibtop_private.h>
/* We need to call this when kstat_chain_update() returns new KID.
* In that case all kstat pointers and data are invalid, so we
* need to reread everything. The condition shouldn't happen very
* often.
*/
void
glibtop_get_kstats(glibtop *server)
{
kstat_ctl_t *kc = server->machine.kc;
kstat_t *ksp;
int nproc_same, new_ncpu;
server->ncpu = new_ncpu = sysconf(_SC_NPROCESSORS_CONF);
if(!kc)
{
server->ncpu = new_ncpu;
server->machine.vminfo_kstat = NULL;
server->machine.system = NULL;
server->machine.syspages = NULL;
server->machine.bunyip = NULL;
return;
}
do {
ksp = kstat_lookup(kc, "unix", -1, "vminfo");
server->machine.vminfo_kstat = ksp;
if(ksp)
{
kstat_read(kc, ksp, &server->machine.vminfo);
/* Don't change snaptime if we only need to reinitialize kstats */
if(!(server->machine.vminfo_snaptime))
server->machine.vminfo_snaptime = ksp->ks_snaptime;
}
/* We don't know why was kstat chain invalidated. It could have
been because the number of processors changed. The sysconf()
man page says that values returned won't change during the
life time of a process, but let's hope that's just an error in
the documentation. */
if((nproc_same = new_ncpu) == server->ncpu)
{
int checked, i;
char cpu[20];
for(i = 0, checked = 0; i < GLIBTOP_NCPU || checked == new_ncpu; ++i)
if(!server->machine.cpu_stat_kstat[i])
{
sprintf(cpu, "cpu_stat%d", i);
if(!(server->machine.cpu_stat_kstat[i] =
kstat_lookup(kc, "cpu_stat", -1, cpu)))
{
nproc_same = 0;
break;
}
++checked;
}
}
if(!nproc_same)
{
processorid_t p;
int found;
char cpu[20];
server->ncpu = new_ncpu = MIN(new_ncpu, GLIBTOP_NCPU);
for(p = 0, found = 0; p < GLIBTOP_NCPU && found != new_ncpu; ++p)
{
if(p_online(p, P_STATUS) < 0)
{
server->machine.cpu_stat_kstat[p] = NULL;
continue;
}
sprintf(cpu, "cpu_stat%d", (int)p);
server->machine.cpu_stat_kstat[p] =
kstat_lookup(kc, "cpu_stat", -1, cpu);
++found;
}
}
server->machine.system = kstat_lookup(kc, "unix", -1, "system_misc");
server->machine.syspages = kstat_lookup(kc, "unix", -1, "system_pages");
server->machine.bunyip = kstat_lookup(kc, "bunyip", -1, "mempages");
} while(kstat_chain_update(kc) > 0 &&
(new_ncpu = sysconf(_SC_NPROCESSORS_CONF)));
/* We'll ignore -1 from kstat_chain_update here, since it really
shouldn't happen */
}
void
glibtop_open_s (glibtop *server, const char *program_name,
const unsigned long features, const unsigned flags)
{
kstat_ctl_t *kc;
kstat_t *ksp;
kstat_named_t *kn;
int i, page;
void *dl;
server->name = program_name;
page = sysconf(_SC_PAGESIZE) >> 10;
for(i = 0; page; ++i, page >>= 1);
server->machine.pagesize = i - 1;
server->machine.ticks = sysconf(_SC_CLK_TCK);
if(server->machine.kc)
kstat_close(server->machine.kc);
server->machine.kc = kc = kstat_open ();
#if 0
for (ksp = server->machine.kc->kc_chain; ksp != NULL; ksp = ksp->ks_next) {
if (!strcmp (ksp->ks_class, "vm") && !strcmp (ksp->ks_name, "vminfo")) {
server->machine.vminfo_kstat = ksp;
kstat_read (server->machine.kc, ksp, &server->machine.vminfo);
server->machine.vminfo_snaptime = ksp->ks_snaptime;
continue;
}
if (!strcmp (ksp->ks_class, "misc") && !strncmp (ksp->ks_name, "cpu_stat", 8)) {
int cpu;
if ((sscanf (ksp->ks_name+8, "%d", &cpu) != 1) || (cpu > 63))
continue;
if (cpu >= server->ncpu)
server->ncpu = cpu+1;
server->machine.cpu_stat_kstat [cpu] = ksp;
continue;
}
}
#endif
if (!kc)
glibtop_warn_io_r (server, "kstat_open ()");
server->ncpu = -1; /* Force processor detection */
server->machine.vminfo_snaptime = 0; /* Force snaptime read */
glibtop_get_kstats(server);
server->machine.boot = 0;
if((ksp = server->machine.system) && kstat_read(kc, ksp, NULL) >= 0)
{
kn = (kstat_named_t *)kstat_data_lookup(ksp, "boot_time");
if(kn)
switch(kn->data_type)
{
#ifdef KSTAT_DATA_INT32
case KSTAT_DATA_INT32: server->machine.boot = kn->value.i32;
break;
case KSTAT_DATA_UINT32: server->machine.boot = kn->value.ui32;
break;
case KSTAT_DATA_INT64: server->machine.boot = kn->value.i64;
break;
case KSTAT_DATA_UINT64: server->machine.boot = kn->value.ui64;
break;
#else
case KSTAT_DATA_LONG: server->machine.boot = kn->value.l;
break;
case KSTAT_DATA_ULONG: server->machine.boot = kn->value.ul;
break;
case KSTAT_DATA_LONGLONG: server->machine.boot = kn->value.ll;
break;
case KSTAT_DATA_ULONGLONG: server->machine.boot = kn->value.ull;
break;
#endif
}
}
/* Now let's have a bit of magic dust... */
#if GLIBTOP_SOLARIS_RELEASE >= 50600
dl = dlopen("/usr/lib/libproc.so", RTLD_LAZY);
if(server->machine.libproc)
dlclose(server->machine.libproc);
server->machine.libproc = dl;
if(dl)
{
void *func;
func = dlsym(dl, "Pobjname"); /* Solaris 8 */
if(!func)
func = dlsym(dl, "proc_objname"); /* Solaris 7 */
server->machine.objname = (void (*)
(void *, uintptr_t, const char *, size_t))func;
server->machine.pgrab = (struct ps_prochandle *(*)(pid_t, int, int *))
dlsym(dl, "Pgrab");
server->machine.pfree = (void (*)(void *))dlsym(dl, "Pfree");
}
else
{
server->machine.objname = NULL;
server->machine.pgrab = NULL;
server->machine.pfree = NULL;
}
#endif
server->machine.me = getpid();
}
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