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Started porting. Getting CPU usage now working. Took a lot of code from

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* sysdeps/sun4/{open.c, cpu.c}: Started porting.
Getting CPU usage now working. Took a lot of code
from top-3.4.
This commit is contained in:
Martin Baulig
1998-05-23 23:05:08 +00:00
parent 37e161bcec
commit 109f8dc608
2 changed files with 217 additions and 0 deletions
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68
sysdeps/sun4/cpu.c
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@@ -22,10 +22,78 @@
#include <config.h>
#include <glibtop/cpu.h>
static const unsigned long _glibtop_sysdeps_cpu =
(1 << GLIBTOP_CPU_TOTAL) + (1 << GLIBTOP_CPU_USER) +
(1 << GLIBTOP_CPU_NICE) + (1 << GLIBTOP_CPU_SYS) +
(1 << GLIBTOP_CPU_IDLE) + (1 << GLIBTOP_CPU_FREQUENCY);
/* Provides information about cpu usage. */
void
glibtop_get_cpu__r (glibtop *server, glibtop_cpu *buf)
{
long cp_time [CPUSTATES], mp_time [NCPU][CPUSTATES];
int i;
memset (buf, 0, sizeof (glibtop_cpu));
/* !!! THE FOLLOWING CODE RUNS SGID KMEM - CHANGE WITH CAUTION !!! */
setregid (server->machine.gid, server->machine.egid);
/* get the cp_time array */
(void) _glibtop_getkval (server, _glibtop_nlist [X_CP_TIME].n_value, (int *) cp_time,
sizeof (cp_time), _glibtop_nlist [X_CP_TIME].n_name);
#ifdef MULTIPROCESSOR
/* get the mp_time array as well */
if (server->machine.ncpu > 1) {
(void) _glibtop_getkval (server, _glibtop_nlist [X_MP_TIME].n_value, (int *) mp_time,
sizeof (mp_time), _glibtop_nlist [X_MP_TIME].n_name);
}
#endif
if (setregid (server->machine.egid, server->machine.gid))
_exit (1);
/* !!! END OF SUID ROOT PART !!! */
#ifdef MULTIPROCESSOR
/* If we have multiple processors, we add the times for each of them and set
frequency to 100 times the number of the processors. */
/* [FIXME]: I had no machine with more than one processor to test this code !!! */
if (server->machine.ncpu > 1) {
for (i = 0; i < server->machine.ncpu; i++) {
buf->user += mp_time [i][CP_USER];
buf->nice += mp_time [i][CP_NICE];
buf->sys += mp_time [i][CP_SYS];
buf->idle += mp_time [i][CP_IDLE];
buf->frequency += 100;
}
} else {
buf->user = cp_time [CP_USER];
buf->nice = cp_time [CP_NICE];
buf->sys = cp_time [CP_SYS];
buf->idle = cp_time [CP_IDLE];
buf->frequency = 100;
}
#else
buf->user = cp_time [CP_USER];
buf->nice = cp_time [CP_NICE];
buf->sys = cp_time [CP_SYS];
buf->idle = cp_time [CP_IDLE];
buf->frequency = 100;
#endif
/* Calculate total time. */
buf->total = buf->user + buf->nice + buf->sys + buf->idle;
/* Now we can set the flags. */
buf->flags = _glibtop_sysdeps_cpu;
}