summaryrefslogtreecommitdiffstats
path: root/usr.sbin/kgmon
diff options
context:
space:
mode:
Diffstat (limited to 'usr.sbin/kgmon')
-rw-r--r--usr.sbin/kgmon/kgmon.84
-rw-r--r--usr.sbin/kgmon/kgmon.c179
2 files changed, 75 insertions, 108 deletions
diff --git a/usr.sbin/kgmon/kgmon.8 b/usr.sbin/kgmon/kgmon.8
index 4a91582..0ec962d 100644
--- a/usr.sbin/kgmon/kgmon.8
+++ b/usr.sbin/kgmon/kgmon.8
@@ -46,7 +46,7 @@
.Nm Kgmon
is a tool used when profiling the operating system.
When no arguments are supplied,
-.Nm kgmon
+.Nm
indicates the state of operating system profiling as running,
off, or not configured.
(see
@@ -54,7 +54,7 @@ off, or not configured.
If the
.Fl p
flag is specified,
-.Nm kgmon
+.Nm
extracts profile data from the operating system and produces a
.Pa gmon.out
file suitable for later analysis by
diff --git a/usr.sbin/kgmon/kgmon.c b/usr.sbin/kgmon/kgmon.c
index fd0c4be..4d2bd4f 100644
--- a/usr.sbin/kgmon/kgmon.c
+++ b/usr.sbin/kgmon/kgmon.c
@@ -32,13 +32,17 @@
*/
#ifndef lint
-static char copyright[] =
+static const char copyright[] =
"@(#) Copyright (c) 1983, 1992, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
+#if 0
static char sccsid[] = "@(#)kgmon.c 8.1 (Berkeley) 6/6/93";
+#endif
+static const char rcsid[] =
+ "$Id$";
#endif /* not lint */
#include <sys/param.h>
@@ -46,22 +50,24 @@ static char sccsid[] = "@(#)kgmon.c 8.1 (Berkeley) 6/6/93";
#include <sys/time.h>
#include <sys/sysctl.h>
#include <sys/gmon.h>
+#include <ctype.h>
+#include <err.h>
#include <errno.h>
#include <kvm.h>
#include <limits.h>
+#include <nlist.h>
+#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <nlist.h>
-#include <ctype.h>
-#include <paths.h>
+#include <unistd.h>
struct nlist nl[] = {
#define N_GMONPARAM 0
{ "__gmonparam" },
#define N_PROFHZ 1
{ "_profhz" },
- 0,
+ { NULL },
};
struct kvmvars {
@@ -71,15 +77,18 @@ struct kvmvars {
int Bflag, bflag, hflag, kflag, rflag, pflag;
int debug = 0;
+int getprof __P((struct kvmvars *));
+int getprofhz __P((struct kvmvars *));
+void kern_readonly __P((int));
+int openfiles __P((char *, char *, struct kvmvars *));
void setprof __P((struct kvmvars *kvp, int state));
void dumpstate __P((struct kvmvars *kvp));
void reset __P((struct kvmvars *kvp));
+static void usage __P((void));
int
main(int argc, char **argv)
{
- extern char *optarg;
- extern int optind;
int ch, mode, disp, accessmode;
struct kvmvars kvmvars;
char *system, *kmemf;
@@ -120,9 +129,7 @@ main(int argc, char **argv)
break;
default:
- (void)fprintf(stderr,
- "usage: kgmon [-Bbhrp] [-M core] [-N system]\n");
- exit(1);
+ usage();
}
}
argc -= optind;
@@ -166,9 +173,17 @@ main(int argc, char **argv)
return (0);
}
+static void
+usage()
+{
+ fprintf(stderr, "usage: kgmon [-Bbhrp] [-M core] [-N system]\n");
+ exit(1);
+}
+
/*
* Check that profiling is enabled and open any ncessary files.
*/
+int
openfiles(system, kmemf, kvp)
char *system;
char *kmemf;
@@ -182,11 +197,8 @@ openfiles(system, kmemf, kvp)
mib[1] = KERN_PROF;
mib[2] = GPROF_STATE;
size = sizeof state;
- if (sysctl(mib, 3, &state, &size, NULL, 0) < 0) {
- (void)fprintf(stderr,
- "kgmon: profiling not defined in kernel.\n");
- exit(20);
- }
+ if (sysctl(mib, 3, &state, &size, NULL, 0) < 0)
+ errx(20, "profiling not defined in kernel");
if (!(Bflag || bflag || hflag || rflag ||
(pflag &&
(state == GMON_PROF_HIRES || state == GMON_PROF_ON))))
@@ -207,28 +219,21 @@ openfiles(system, kmemf, kvp)
kvp->kd = kvm_openfiles(system, kmemf, NULL, O_RDONLY,
errbuf);
}
- if (kvp->kd == NULL) {
- (void)fprintf(stderr, "kgmon: kvm_openfiles: %s\n",
- errbuf);
- exit(2);
- }
+ if (kvp->kd == NULL)
+ errx(2, "kvm_openfiles: %s", errbuf);
kern_readonly(GMON_PROF_ON);
}
- if (kvm_nlist(kvp->kd, nl) < 0) {
- (void)fprintf(stderr, "kgmon: %s: no namelist\n", system);
- exit(3);
- }
- if (!nl[N_GMONPARAM].n_value) {
- (void)fprintf(stderr,
- "kgmon: profiling not defined in kernel.\n");
- exit(20);
- }
+ if (kvm_nlist(kvp->kd, nl) < 0)
+ errx(3, "%s: no namelist", system);
+ if (!nl[N_GMONPARAM].n_value)
+ errx(20, "profiling not defined in kernel");
return (openmode);
}
/*
* Suppress options that require a writable kernel.
*/
+void
kern_readonly(mode)
int mode;
{
@@ -250,6 +255,7 @@ kern_readonly(mode)
/*
* Get the state of kernel profiling.
*/
+int
getprof(kvp)
struct kvmvars *kvp;
{
@@ -266,11 +272,9 @@ getprof(kvp)
if (sysctl(mib, 3, &kvp->gpm, &size, NULL, 0) < 0)
size = 0;
}
- if (size != sizeof kvp->gpm) {
- (void)fprintf(stderr, "kgmon: cannot get gmonparam: %s\n",
+ if (size != sizeof kvp->gpm)
+ errx(4, "cannot get gmonparam: %s",
kflag ? kvm_geterr(kvp->kd) : strerror(errno));
- exit (4);
- }
return (kvp->gpm.state);
}
@@ -304,7 +308,7 @@ setprof(kvp, state)
== sz)
return;
bad:
- (void)fprintf(stderr, "kgmon: warning: cannot turn profiling %s\n",
+ warnx("warning: cannot turn profiling %s",
state == GMON_PROF_OFF ? "off" : "on");
}
@@ -318,7 +322,7 @@ dumpstate(kvp)
register FILE *fp;
struct rawarc rawarc;
struct tostruct *tos;
- u_long frompc, addr;
+ u_long frompc;
u_short *froms, *tickbuf;
int mib[3], i;
struct gmonhdr h;
@@ -327,7 +331,7 @@ dumpstate(kvp)
setprof(kvp, GMON_PROF_OFF);
fp = fopen("gmon.out", "w");
if (fp == 0) {
- perror("gmon.out");
+ warn("gmon.out");
return;
}
@@ -349,10 +353,8 @@ dumpstate(kvp)
*/
mib[0] = CTL_KERN;
mib[1] = KERN_PROF;
- if ((tickbuf = (u_short *)malloc(kvp->gpm.kcountsize)) == NULL) {
- fprintf(stderr, "kgmon: cannot allocate kcount space\n");
- exit (5);
- }
+ if ((tickbuf = (u_short *)malloc(kvp->gpm.kcountsize)) == NULL)
+ errx(5, "cannot allocate kcount space");
if (kflag) {
i = kvm_read(kvp->kd, (u_long)kvp->gpm.kcount, (void *)tickbuf,
kvp->gpm.kcountsize);
@@ -362,25 +364,19 @@ dumpstate(kvp)
if (sysctl(mib, 3, tickbuf, &i, NULL, 0) < 0)
i = 0;
}
- if (i != kvp->gpm.kcountsize) {
- (void)fprintf(stderr, "kgmon: read ticks: read %u, got %d: %s",
+ if (i != kvp->gpm.kcountsize)
+ errx(6, "read ticks: read %u, got %d: %s",
kvp->gpm.kcountsize, i,
kflag ? kvm_geterr(kvp->kd) : strerror(errno));
- exit(6);
- }
- if ((fwrite(tickbuf, kvp->gpm.kcountsize, 1, fp)) != 1) {
- perror("kgmon: writing tocks to gmon.out");
- exit(7);
- }
+ if ((fwrite(tickbuf, kvp->gpm.kcountsize, 1, fp)) != 1)
+ err(7, "writing tocks to gmon.out");
free(tickbuf);
/*
* Write out the arc info.
*/
- if ((froms = (u_short *)malloc(kvp->gpm.fromssize)) == NULL) {
- fprintf(stderr, "kgmon: cannot allocate froms space\n");
- exit (8);
- }
+ if ((froms = (u_short *)malloc(kvp->gpm.fromssize)) == NULL)
+ errx(8, "cannot allocate froms space");
if (kflag) {
i = kvm_read(kvp->kd, (u_long)kvp->gpm.froms, (void *)froms,
kvp->gpm.fromssize);
@@ -390,16 +386,12 @@ dumpstate(kvp)
if (sysctl(mib, 3, froms, &i, NULL, 0) < 0)
i = 0;
}
- if (i != kvp->gpm.fromssize) {
- (void)fprintf(stderr, "kgmon: read froms: read %u, got %d: %s",
+ if (i != kvp->gpm.fromssize)
+ errx(9, "read froms: read %u, got %d: %s",
kvp->gpm.fromssize, i,
kflag ? kvm_geterr(kvp->kd) : strerror(errno));
- exit(9);
- }
- if ((tos = (struct tostruct *)malloc(kvp->gpm.tossize)) == NULL) {
- fprintf(stderr, "kgmon: cannot allocate tos space\n");
- exit(10);
- }
+ if ((tos = (struct tostruct *)malloc(kvp->gpm.tossize)) == NULL)
+ errx(10, "cannot allocate tos space");
if (kflag) {
i = kvm_read(kvp->kd, (u_long)kvp->gpm.tos, (void *)tos,
kvp->gpm.tossize);
@@ -409,14 +401,12 @@ dumpstate(kvp)
if (sysctl(mib, 3, tos, &i, NULL, 0) < 0)
i = 0;
}
- if (i != kvp->gpm.tossize) {
- (void)fprintf(stderr, "kgmon: read tos: read %u, got %d: %s",
+ if (i != kvp->gpm.tossize)
+ errx(11, "read tos: read %u, got %d: %s",
kvp->gpm.tossize, i,
kflag ? kvm_geterr(kvp->kd) : strerror(errno));
- exit(11);
- }
if (debug)
- (void)fprintf(stderr, "kgmon: lowpc 0x%x, textsize 0x%x\n",
+ warnx("lowpc 0x%x, textsize 0x%x",
kvp->gpm.lowpc, kvp->gpm.textsize);
endfrom = kvp->gpm.fromssize / sizeof(*froms);
for (fromindex = 0; fromindex < endfrom; ++fromindex) {
@@ -427,9 +417,8 @@ dumpstate(kvp)
for (toindex = froms[fromindex]; toindex != 0;
toindex = tos[toindex].link) {
if (debug)
- (void)fprintf(stderr,
- "%s: [mcleanup] frompc 0x%x selfpc 0x%x count %d\n",
- "kgmon", frompc, tos[toindex].selfpc,
+ warnx("[mcleanup] frompc 0x%x selfpc 0x%x count %d",
+ frompc, tos[toindex].selfpc,
tos[toindex].count);
rawarc.raw_frompc = frompc;
rawarc.raw_selfpc = (u_long)tos[toindex].selfpc;
@@ -454,8 +443,7 @@ getprofhz(kvp)
profrate = 1;
if (kvm_read(kvp->kd, nl[N_PROFHZ].n_value, &profrate,
sizeof profrate) != sizeof profrate)
- (void)fprintf(stderr, "kgmon: get clockrate: %s\n",
- kvm_geterr(kvp->kd));
+ warnx("get clockrate: %s", kvm_geterr(kvp->kd));
return (profrate);
}
mib[0] = CTL_KERN;
@@ -463,8 +451,7 @@ getprofhz(kvp)
clockrate.profhz = 1;
size = sizeof clockrate;
if (sysctl(mib, 2, &clockrate, &size, NULL, 0) < 0)
- (void)fprintf(stderr, "kgmon: get clockrate: %s\n",
- strerror(errno));
+ warn("get clockrate");
return (clockrate.profhz);
}
@@ -486,53 +473,33 @@ reset(kvp)
biggest = kvp->gpm.fromssize;
if (kvp->gpm.tossize > biggest)
biggest = kvp->gpm.tossize;
- if ((zbuf = (char *)malloc(biggest)) == NULL) {
- fprintf(stderr, "kgmon: cannot allocate zbuf space\n");
- exit(12);
- }
+ if ((zbuf = (char *)malloc(biggest)) == NULL)
+ errx(12, "cannot allocate zbuf space");
bzero(zbuf, biggest);
if (kflag) {
if (kvm_write(kvp->kd, (u_long)kvp->gpm.kcount, zbuf,
- kvp->gpm.kcountsize) != kvp->gpm.kcountsize) {
- (void)fprintf(stderr, "kgmon: tickbuf zero: %s\n",
- kvm_geterr(kvp->kd));
- exit(13);
- }
+ kvp->gpm.kcountsize) != kvp->gpm.kcountsize)
+ errx(13, "tickbuf zero: %s", kvm_geterr(kvp->kd));
if (kvm_write(kvp->kd, (u_long)kvp->gpm.froms, zbuf,
- kvp->gpm.fromssize) != kvp->gpm.fromssize) {
- (void)fprintf(stderr, "kgmon: froms zero: %s\n",
- kvm_geterr(kvp->kd));
- exit(14);
- }
+ kvp->gpm.fromssize) != kvp->gpm.fromssize)
+ errx(14, "froms zero: %s", kvm_geterr(kvp->kd));
if (kvm_write(kvp->kd, (u_long)kvp->gpm.tos, zbuf,
- kvp->gpm.tossize) != kvp->gpm.tossize) {
- (void)fprintf(stderr, "kgmon: tos zero: %s\n",
- kvm_geterr(kvp->kd));
- exit(15);
- }
+ kvp->gpm.tossize) != kvp->gpm.tossize)
+ errx(15, "tos zero: %s", kvm_geterr(kvp->kd));
return;
}
(void)seteuid(0);
mib[0] = CTL_KERN;
mib[1] = KERN_PROF;
mib[2] = GPROF_COUNT;
- if (sysctl(mib, 3, NULL, NULL, zbuf, kvp->gpm.kcountsize) < 0) {
- (void)fprintf(stderr, "kgmon: tickbuf zero: %s\n",
- strerror(errno));
- exit(13);
- }
+ if (sysctl(mib, 3, NULL, NULL, zbuf, kvp->gpm.kcountsize) < 0)
+ err(13, "tickbuf zero");
mib[2] = GPROF_FROMS;
- if (sysctl(mib, 3, NULL, NULL, zbuf, kvp->gpm.fromssize) < 0) {
- (void)fprintf(stderr, "kgmon: froms zero: %s\n",
- strerror(errno));
- exit(14);
- }
+ if (sysctl(mib, 3, NULL, NULL, zbuf, kvp->gpm.fromssize) < 0)
+ err(14, "froms zero");
mib[2] = GPROF_TOS;
- if (sysctl(mib, 3, NULL, NULL, zbuf, kvp->gpm.tossize) < 0) {
- (void)fprintf(stderr, "kgmon: tos zero: %s\n",
- strerror(errno));
- exit(15);
- }
+ if (sysctl(mib, 3, NULL, NULL, zbuf, kvp->gpm.tossize) < 0)
+ err(15, "tos zero");
(void)seteuid(getuid());
free(zbuf);
}
OpenPOWER on IntegriCloud