1/*-
2 * Copyright (c) 1983, 1992, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#if defined(LIBC_SCCS) && !defined(lint)
31static char sccsid[] = "@(#)gmon.c 8.1 (Berkeley) 6/4/93";
32#endif
33#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 1983, 1992, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#if defined(LIBC_SCCS) && !defined(lint)
31static char sccsid[] = "@(#)gmon.c 8.1 (Berkeley) 6/4/93";
32#endif
33#include <sys/cdefs.h>
|
35
36#include "namespace.h"
37#include <sys/param.h>
38#include <sys/time.h>
39#include <sys/gmon.h>
40#include <sys/sysctl.h>
41
42#include <err.h>
43#include <fcntl.h>
44#include <stdio.h>
45#include <stdlib.h>
46#include <string.h>
47#include <unistd.h>
48#include "un-namespace.h"
49
50#include "libc_private.h"
51
52#if defined(__i386__) || defined(__sparc64__) || defined(__amd64__) || defined(__powerpc__)
53extern char *minbrk __asm (".minbrk");
54#else
55extern char *minbrk __asm ("minbrk");
56#endif
57
58struct gmonparam _gmonparam = { GMON_PROF_OFF };
59
60static int s_scale;
61/* see profil(2) where this is describe (incorrectly) */
62#define SCALE_1_TO_1 0x10000L
63
64#define ERR(s) _write(2, s, sizeof(s))
65
66void moncontrol(int);
67static int hertz(void);
68
69void
70monstartup(lowpc, highpc)
71 u_long lowpc;
72 u_long highpc;
73{
74 int o;
75 char *cp;
76 struct gmonparam *p = &_gmonparam;
77
78 /*
79 * round lowpc and highpc to multiples of the density we're using
80 * so the rest of the scaling (here and in gprof) stays in ints.
81 */
82 p->lowpc = ROUNDDOWN(lowpc, HISTFRACTION * sizeof(HISTCOUNTER));
83 p->highpc = ROUNDUP(highpc, HISTFRACTION * sizeof(HISTCOUNTER));
84 p->textsize = p->highpc - p->lowpc;
85 p->kcountsize = p->textsize / HISTFRACTION;
86 p->hashfraction = HASHFRACTION;
87 p->fromssize = p->textsize / HASHFRACTION;
88 p->tolimit = p->textsize * ARCDENSITY / 100;
89 if (p->tolimit < MINARCS)
90 p->tolimit = MINARCS;
91 else if (p->tolimit > MAXARCS)
92 p->tolimit = MAXARCS;
93 p->tossize = p->tolimit * sizeof(struct tostruct);
94
95 cp = sbrk(p->kcountsize + p->fromssize + p->tossize);
96 if (cp == (char *)-1) {
97 ERR("monstartup: out of memory\n");
98 return;
99 }
100#ifdef notdef
101 bzero(cp, p->kcountsize + p->fromssize + p->tossize);
102#endif
103 p->tos = (struct tostruct *)cp;
104 cp += p->tossize;
105 p->kcount = (u_short *)cp;
106 cp += p->kcountsize;
107 p->froms = (u_short *)cp;
108
109 minbrk = sbrk(0);
110 p->tos[0].link = 0;
111
112 o = p->highpc - p->lowpc;
113 if (p->kcountsize < o) {
114#ifndef hp300
115 s_scale = ((float)p->kcountsize / o ) * SCALE_1_TO_1;
116#else /* avoid floating point */
117 int quot = o / p->kcountsize;
118
119 if (quot >= 0x10000)
120 s_scale = 1;
121 else if (quot >= 0x100)
122 s_scale = 0x10000 / quot;
123 else if (o >= 0x800000)
124 s_scale = 0x1000000 / (o / (p->kcountsize >> 8));
125 else
126 s_scale = 0x1000000 / ((o << 8) / p->kcountsize);
127#endif
128 } else
129 s_scale = SCALE_1_TO_1;
130
131 moncontrol(1);
132}
133
134void
| 35
36#include "namespace.h"
37#include <sys/param.h>
38#include <sys/time.h>
39#include <sys/gmon.h>
40#include <sys/sysctl.h>
41
42#include <err.h>
43#include <fcntl.h>
44#include <stdio.h>
45#include <stdlib.h>
46#include <string.h>
47#include <unistd.h>
48#include "un-namespace.h"
49
50#include "libc_private.h"
51
52#if defined(__i386__) || defined(__sparc64__) || defined(__amd64__) || defined(__powerpc__)
53extern char *minbrk __asm (".minbrk");
54#else
55extern char *minbrk __asm ("minbrk");
56#endif
57
58struct gmonparam _gmonparam = { GMON_PROF_OFF };
59
60static int s_scale;
61/* see profil(2) where this is describe (incorrectly) */
62#define SCALE_1_TO_1 0x10000L
63
64#define ERR(s) _write(2, s, sizeof(s))
65
66void moncontrol(int);
67static int hertz(void);
68
69void
70monstartup(lowpc, highpc)
71 u_long lowpc;
72 u_long highpc;
73{
74 int o;
75 char *cp;
76 struct gmonparam *p = &_gmonparam;
77
78 /*
79 * round lowpc and highpc to multiples of the density we're using
80 * so the rest of the scaling (here and in gprof) stays in ints.
81 */
82 p->lowpc = ROUNDDOWN(lowpc, HISTFRACTION * sizeof(HISTCOUNTER));
83 p->highpc = ROUNDUP(highpc, HISTFRACTION * sizeof(HISTCOUNTER));
84 p->textsize = p->highpc - p->lowpc;
85 p->kcountsize = p->textsize / HISTFRACTION;
86 p->hashfraction = HASHFRACTION;
87 p->fromssize = p->textsize / HASHFRACTION;
88 p->tolimit = p->textsize * ARCDENSITY / 100;
89 if (p->tolimit < MINARCS)
90 p->tolimit = MINARCS;
91 else if (p->tolimit > MAXARCS)
92 p->tolimit = MAXARCS;
93 p->tossize = p->tolimit * sizeof(struct tostruct);
94
95 cp = sbrk(p->kcountsize + p->fromssize + p->tossize);
96 if (cp == (char *)-1) {
97 ERR("monstartup: out of memory\n");
98 return;
99 }
100#ifdef notdef
101 bzero(cp, p->kcountsize + p->fromssize + p->tossize);
102#endif
103 p->tos = (struct tostruct *)cp;
104 cp += p->tossize;
105 p->kcount = (u_short *)cp;
106 cp += p->kcountsize;
107 p->froms = (u_short *)cp;
108
109 minbrk = sbrk(0);
110 p->tos[0].link = 0;
111
112 o = p->highpc - p->lowpc;
113 if (p->kcountsize < o) {
114#ifndef hp300
115 s_scale = ((float)p->kcountsize / o ) * SCALE_1_TO_1;
116#else /* avoid floating point */
117 int quot = o / p->kcountsize;
118
119 if (quot >= 0x10000)
120 s_scale = 1;
121 else if (quot >= 0x100)
122 s_scale = 0x10000 / quot;
123 else if (o >= 0x800000)
124 s_scale = 0x1000000 / (o / (p->kcountsize >> 8));
125 else
126 s_scale = 0x1000000 / ((o << 8) / p->kcountsize);
127#endif
128 } else
129 s_scale = SCALE_1_TO_1;
130
131 moncontrol(1);
132}
133
134void
|
136{
137 int fd;
138 int fromindex;
139 int endfrom;
140 u_long frompc;
141 int toindex;
142 struct rawarc rawarc;
143 struct gmonparam *p = &_gmonparam;
144 struct gmonhdr gmonhdr, *hdr;
145 struct clockinfo clockinfo;
146 char outname[128];
147 int mib[2];
148 size_t size;
149#ifdef DEBUG
150 int log, len;
151 char buf[200];
152#endif
153
154 if (p->state == GMON_PROF_ERROR)
155 ERR("_mcleanup: tos overflow\n");
156
157 size = sizeof(clockinfo);
158 mib[0] = CTL_KERN;
159 mib[1] = KERN_CLOCKRATE;
160 if (sysctl(mib, 2, &clockinfo, &size, NULL, 0) < 0) {
161 /*
162 * Best guess
163 */
164 clockinfo.profhz = hertz();
165 } else if (clockinfo.profhz == 0) {
166 if (clockinfo.hz != 0)
167 clockinfo.profhz = clockinfo.hz;
168 else
169 clockinfo.profhz = hertz();
170 }
171
172 moncontrol(0);
173 snprintf(outname, sizeof(outname), "%s.gmon", _getprogname());
174 fd = _open(outname, O_CREAT|O_TRUNC|O_WRONLY, 0666);
175 if (fd < 0) {
176 _warn("_mcleanup: %s", outname);
177 return;
178 }
179#ifdef DEBUG
180 log = _open("gmon.log", O_CREAT|O_TRUNC|O_WRONLY, 0664);
181 if (log < 0) {
182 _warn("_mcleanup: gmon.log");
183 return;
184 }
185 len = sprintf(buf, "[mcleanup1] kcount 0x%p ssiz %lu\n",
186 p->kcount, p->kcountsize);
187 _write(log, buf, len);
188#endif
189 hdr = (struct gmonhdr *)&gmonhdr;
190 bzero(hdr, sizeof(*hdr));
191 hdr->lpc = p->lowpc;
192 hdr->hpc = p->highpc;
193 hdr->ncnt = p->kcountsize + sizeof(gmonhdr);
194 hdr->version = GMONVERSION;
195 hdr->profrate = clockinfo.profhz;
196 _write(fd, (char *)hdr, sizeof *hdr);
197 _write(fd, p->kcount, p->kcountsize);
198 endfrom = p->fromssize / sizeof(*p->froms);
199 for (fromindex = 0; fromindex < endfrom; fromindex++) {
200 if (p->froms[fromindex] == 0)
201 continue;
202
203 frompc = p->lowpc;
204 frompc += fromindex * p->hashfraction * sizeof(*p->froms);
205 for (toindex = p->froms[fromindex]; toindex != 0;
206 toindex = p->tos[toindex].link) {
207#ifdef DEBUG
208 len = sprintf(buf,
209 "[mcleanup2] frompc 0x%lx selfpc 0x%lx count %lu\n" ,
210 frompc, p->tos[toindex].selfpc,
211 p->tos[toindex].count);
212 _write(log, buf, len);
213#endif
214 rawarc.raw_frompc = frompc;
215 rawarc.raw_selfpc = p->tos[toindex].selfpc;
216 rawarc.raw_count = p->tos[toindex].count;
217 _write(fd, &rawarc, sizeof rawarc);
218 }
219 }
220 _close(fd);
221}
222
223/*
224 * Control profiling
225 * profiling is what mcount checks to see if
226 * all the data structures are ready.
227 */
228void
229moncontrol(mode)
230 int mode;
231{
232 struct gmonparam *p = &_gmonparam;
233
234 if (mode) {
235 /* start */
236 profil((char *)p->kcount, p->kcountsize, p->lowpc, s_scale);
237 p->state = GMON_PROF_ON;
238 } else {
239 /* stop */
240 profil((char *)0, 0, 0, 0);
241 p->state = GMON_PROF_OFF;
242 }
243}
244
245/*
246 * discover the tick frequency of the machine
247 * if something goes wrong, we return 0, an impossible hertz.
248 */
249static int
250hertz()
251{
252 struct itimerval tim;
253
254 tim.it_interval.tv_sec = 0;
255 tim.it_interval.tv_usec = 1;
256 tim.it_value.tv_sec = 0;
257 tim.it_value.tv_usec = 0;
258 setitimer(ITIMER_REAL, &tim, 0);
259 setitimer(ITIMER_REAL, 0, &tim);
260 if (tim.it_interval.tv_usec < 2)
261 return(0);
262 return (1000000 / tim.it_interval.tv_usec);
263}
| 136{
137 int fd;
138 int fromindex;
139 int endfrom;
140 u_long frompc;
141 int toindex;
142 struct rawarc rawarc;
143 struct gmonparam *p = &_gmonparam;
144 struct gmonhdr gmonhdr, *hdr;
145 struct clockinfo clockinfo;
146 char outname[128];
147 int mib[2];
148 size_t size;
149#ifdef DEBUG
150 int log, len;
151 char buf[200];
152#endif
153
154 if (p->state == GMON_PROF_ERROR)
155 ERR("_mcleanup: tos overflow\n");
156
157 size = sizeof(clockinfo);
158 mib[0] = CTL_KERN;
159 mib[1] = KERN_CLOCKRATE;
160 if (sysctl(mib, 2, &clockinfo, &size, NULL, 0) < 0) {
161 /*
162 * Best guess
163 */
164 clockinfo.profhz = hertz();
165 } else if (clockinfo.profhz == 0) {
166 if (clockinfo.hz != 0)
167 clockinfo.profhz = clockinfo.hz;
168 else
169 clockinfo.profhz = hertz();
170 }
171
172 moncontrol(0);
173 snprintf(outname, sizeof(outname), "%s.gmon", _getprogname());
174 fd = _open(outname, O_CREAT|O_TRUNC|O_WRONLY, 0666);
175 if (fd < 0) {
176 _warn("_mcleanup: %s", outname);
177 return;
178 }
179#ifdef DEBUG
180 log = _open("gmon.log", O_CREAT|O_TRUNC|O_WRONLY, 0664);
181 if (log < 0) {
182 _warn("_mcleanup: gmon.log");
183 return;
184 }
185 len = sprintf(buf, "[mcleanup1] kcount 0x%p ssiz %lu\n",
186 p->kcount, p->kcountsize);
187 _write(log, buf, len);
188#endif
189 hdr = (struct gmonhdr *)&gmonhdr;
190 bzero(hdr, sizeof(*hdr));
191 hdr->lpc = p->lowpc;
192 hdr->hpc = p->highpc;
193 hdr->ncnt = p->kcountsize + sizeof(gmonhdr);
194 hdr->version = GMONVERSION;
195 hdr->profrate = clockinfo.profhz;
196 _write(fd, (char *)hdr, sizeof *hdr);
197 _write(fd, p->kcount, p->kcountsize);
198 endfrom = p->fromssize / sizeof(*p->froms);
199 for (fromindex = 0; fromindex < endfrom; fromindex++) {
200 if (p->froms[fromindex] == 0)
201 continue;
202
203 frompc = p->lowpc;
204 frompc += fromindex * p->hashfraction * sizeof(*p->froms);
205 for (toindex = p->froms[fromindex]; toindex != 0;
206 toindex = p->tos[toindex].link) {
207#ifdef DEBUG
208 len = sprintf(buf,
209 "[mcleanup2] frompc 0x%lx selfpc 0x%lx count %lu\n" ,
210 frompc, p->tos[toindex].selfpc,
211 p->tos[toindex].count);
212 _write(log, buf, len);
213#endif
214 rawarc.raw_frompc = frompc;
215 rawarc.raw_selfpc = p->tos[toindex].selfpc;
216 rawarc.raw_count = p->tos[toindex].count;
217 _write(fd, &rawarc, sizeof rawarc);
218 }
219 }
220 _close(fd);
221}
222
223/*
224 * Control profiling
225 * profiling is what mcount checks to see if
226 * all the data structures are ready.
227 */
228void
229moncontrol(mode)
230 int mode;
231{
232 struct gmonparam *p = &_gmonparam;
233
234 if (mode) {
235 /* start */
236 profil((char *)p->kcount, p->kcountsize, p->lowpc, s_scale);
237 p->state = GMON_PROF_ON;
238 } else {
239 /* stop */
240 profil((char *)0, 0, 0, 0);
241 p->state = GMON_PROF_OFF;
242 }
243}
244
245/*
246 * discover the tick frequency of the machine
247 * if something goes wrong, we return 0, an impossible hertz.
248 */
249static int
250hertz()
251{
252 struct itimerval tim;
253
254 tim.it_interval.tv_sec = 0;
255 tim.it_interval.tv_usec = 1;
256 tim.it_value.tv_sec = 0;
257 tim.it_value.tv_usec = 0;
258 setitimer(ITIMER_REAL, &tim, 0);
259 setitimer(ITIMER_REAL, 0, &tim);
260 if (tim.it_interval.tv_usec < 2)
261 return(0);
262 return (1000000 / tim.it_interval.tv_usec);
263}
|