Annotation of src/usr.bin/make/stats.c, Revision 1.8
1.1 espie 1: /* $OpenPackages$ */
1.8 ! espie 2: /* $OpenBSD: stats.c,v 1.7 2004/04/07 13:11:36 espie Exp $ */
1.1 espie 3:
4: /*
5: * Copyright (c) 1999 Marc Espie.
6: *
7: * Code written for the OpenBSD project.
8: *
9: * Redistribution and use in source and binary forms, with or without
10: * modification, are permitted provided that the following conditions
11: * are met:
12: * 1. Redistributions of source code must retain the above copyright
13: * notice, this list of conditions and the following disclaimer.
14: * 2. Redistributions in binary form must reproduce the above copyright
15: * notice, this list of conditions and the following disclaimer in the
16: * documentation and/or other materials provided with the distribution.
17: *
18: * THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS
19: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBSD
22: * PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28: * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29: */
30:
31:
32: /* statistics gathering */
33:
34: /* collection across make invocations is done with an mmap shared file,
35: to allow for concurrent adjustment to variables.
36: */
37:
1.2 espie 38: #include "config.h"
39: #include "defines.h"
1.1 espie 40: #include "stats.h"
41:
42: #ifdef HAS_STATS
1.3 espie 43: #include <fcntl.h>
1.1 espie 44: #include <stdio.h>
1.3 espie 45: #include <stdlib.h>
46: #include <sys/time.h>
1.1 espie 47: #include <sys/mman.h>
48: #include <sys/types.h>
49: #include <sys/resource.h>
1.3 espie 50: #include "memory.h"
1.1 espie 51:
52: static void print_stats(void);
53: void Init_Stats(void);
54: static float average_runs(unsigned long val);
55: unsigned long *statarray;
56:
1.2 espie 57: static bool mmapped = false;
1.1 espie 58:
59: static float
1.7 espie 60: average_runs(unsigned long val)
1.1 espie 61: {
62: return (float)val / STAT_INVOCATIONS;
63: }
64:
65: static void
1.7 espie 66: print_stats(void)
1.1 espie 67: {
68: struct rusage ru;
69:
70: if (getrusage(RUSAGE_SELF, &ru) != -1) {
71: STAT_USER_SECONDS += ru.ru_utime.tv_sec;
72: STAT_USER_MS += ru.ru_utime.tv_usec;
73: if (STAT_USER_MS > 1000000) {
74: STAT_USER_MS -= 1000000;
75: STAT_USER_SECONDS++;
76: }
77: STAT_SYS_SECONDS += ru.ru_stime.tv_sec;
78: STAT_SYS_MS += ru.ru_stime.tv_usec;
79: if (STAT_SYS_MS > 1000000) {
80: STAT_SYS_MS -= 1000000;
81: STAT_SYS_SECONDS++;
82: }
83: }
84: fprintf(stderr, "Make runs: %lu\n", STAT_INVOCATIONS);
85: fprintf(stderr, "Time user: %lu.%06lu, sys %lu.%06lu\n",
86: STAT_USER_SECONDS, STAT_USER_MS,
87: STAT_SYS_SECONDS, STAT_SYS_MS);
88: #ifdef STATS_VAR_LOOKUP
89: /* to get the average total of MAXSIZE, we need this value */
90: STAT_VAR_POWER +=
91: STAT_VAR_HASH_MAXSIZE * STAT_VAR_HASH_CREATION;
92: fprintf(stderr, "Var finds: %f, lookups: %f, average: %f, max: %lu\n",
93: average_runs(STAT_VAR_FIND),
94: average_runs(STAT_VAR_SEARCHES),
95: (float)STAT_VAR_COUNT/STAT_VAR_SEARCHES,
96: STAT_VAR_MAXCOUNT);
97: fprintf(stderr, "Average hash: %f, creation: %f, from env %f\n",
98: average_runs(STAT_VAR_HASH_CREATION),
99: average_runs(STAT_VAR_CREATION),
100: average_runs(STAT_VAR_FROM_ENV));
101: fprintf(stderr, "Local hash max: %lu, global hash max: %lu, average local: %f\n",
102: STAT_VAR_HASH_MAXSIZE,
103: STAT_VAR_GHASH_MAXSIZE,
104: (float)STAT_VAR_POWER/STAT_VAR_HASH_CREATION);
105: #endif
106: #ifdef STATS_GN_CREATION
107: fprintf(stderr, "Average GN: %f\n", average_runs(STAT_GN_COUNT));
1.8 ! espie 108: #endif
! 109: #ifdef STATS_SUFF
! 110: fprintf(stderr, "Average Suffix lookup: %f, transforms: %f\n",
! 111: average_runs(STAT_SUFF_LOOKUP_NAME),
! 112: average_runs(STAT_TRANSFORM_LOOKUP_NAME));
1.1 espie 113: #endif
114: #ifdef STATS_BUF
115: fprintf(stderr, "Buf tot: %f, def: %f, exp %f, weird %f, bad %f\n",
116: average_runs(STAT_TOTAL_BUFS),
117: average_runs(STAT_DEFAULT_BUFS),
118: average_runs(STAT_BUFS_EXPANSION),
119: average_runs(STAT_WEIRD_BUFS),
120: average_runs(STAT_WEIRD_INEFFICIENT));
121: #endif
122: #ifdef STATS_HASH
123: fprintf(stderr, "Hashes new: %f, exp: %f, lookup %f, l: %f, +: %f, ent : %f\n",
124: average_runs(STAT_HASH_CREATION),
125: average_runs(STAT_HASH_EXPAND),
126: average_runs(STAT_HASH_LOOKUP),
127: (float)STAT_HASH_LENGTH/STAT_HASH_LOOKUP,
128: (float)STAT_HASH_POSITIVE/STAT_HASH_LOOKUP,
129: (float)STAT_HASH_ENTRIES/STAT_HASH_SIZE);
1.5 espie 130: #endif
131: #ifdef STATS_GROW
132: fprintf(stderr, "Grow: %f\n", average_runs(STAT_GROWARRAY));
1.1 espie 133: #endif
134: if (mmapped)
135: munmap(statarray, STAT_NUMBER * sizeof(unsigned long));
136: }
137:
138: void
1.7 espie 139: Init_Stats(void)
1.1 espie 140: {
141: char *name;
142: int fd;
143:
144: /* try to get ahold of a stats collecting file */
145: name = getenv("MAKESTATS");
146: if (name) {
147: while ((fd = open(name, O_RDWR)) == -1) {
148: /* if collecting file does not already exist, fill it with
149: * zeros (so all stats starting values should be 0) */
150: unsigned long n;
151: int i;
152: FILE *f;
153:
154: f = fopen(name, "w");
155:
156: n = 0;
157: for (i = 0; i < STAT_NUMBER; i++)
158: fwrite(&n, sizeof(unsigned long), 1, f);
159: fclose(f);
160: }
161:
162: /* either we've got the file -> share it across makes */
163: if (fd) {
164: statarray = mmap(0, STAT_NUMBER * sizeof(unsigned long),
165: PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
166: if (statarray == MAP_FAILED)
167: exit(1);
1.2 espie 168: mmapped = true;
1.1 espie 169: }
170: } else
171: /* or we don't -> simple stats gathering */
1.6 aaron 172: statarray = ecalloc(STAT_NUMBER, sizeof(unsigned long));
1.1 espie 173: STAT_INVOCATIONS++;
174: atexit(print_stats);
175: }
176:
177: #endif
178:
![[BACK]](/icons/back.gif){kind=icon}
Return to stats.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / make