24void
25fatal(str)
26 char *str;
27{
28 perror(str);
29 exit(1);
30}
31
32void
33purpose()
34{
35 printf("This program benchmarks the performance differences between\n");
36 printf("strcasecmp() and sm_strcasecmp().\n");
37 printf("These tests may take several minutes to complete.\n");
38}
39
40int
41main(argc, argv)
42 int argc;
43 char *argv[];
44{
45 long a;
46 int k;
47 bool doit = false;
48 long loops;
49 long j;
50 long one, two;
51 struct timeval t1, t2;
52 char src1[SIZE], src2[SIZE];
53
54# define OPTIONS "d"
55 while ((k = getopt(argc, argv, OPTIONS)) != -1)
56 {
57 switch ((char) k)
58 {
59 case 'd':
60 doit = true;
61 break;
62
63 default:
64 break;
65 }
66 }
67
68 if (!doit)
69 {
70 purpose();
71 printf("If you want to run it, specify -d as option.\n");
72 return 0;
73 }
74
75 /* Run-time comments to the user */
76 purpose();
77 printf("\n");
78 for (k = 0; k < 3; k++)
79 {
80 switch (k)
81 {
82 case 0:
83 (void) sm_strlcpy(src1, "1234567890", SIZE);
84 (void) sm_strlcpy(src2, "1234567890", SIZE);
85 break;
86 case 1:
87 (void) sm_strlcpy(src1, "1234567890", SIZE);
88 (void) sm_strlcpy(src2, "1234567891", SIZE);
89 break;
90 case 2:
91 (void) sm_strlcpy(src1, "1234567892", SIZE);
92 (void) sm_strlcpy(src2, "1234567891", SIZE);
93 break;
94 }
95 printf("Test %d: strcasecmp(%s, %s) versus sm_strcasecmp()\n",
96 k, src1, src2);
97 loops = LOOPS;
98 for (;;)
99 {
100 j = 0;
101 if (gettimeofday(&t1, NULL) < 0)
102 fatal("gettimeofday");
103 for (a = 0; a < loops; a++)
104 j += strcasecmp(src1, src2);
105 if (gettimeofday(&t2, NULL) < 0)
106 fatal("gettimeofday");
107 one = toseconds(t2, t1);
108 printf("\tstrcasecmp() result: %ld seconds [%ld]\n",
109 one, j);
110
111 j = 0;
112 if (gettimeofday(&t1, NULL) < 0)
113 fatal("gettimeofday");
114 for (a = 0; a < loops; a++)
115 j += sm_strcasecmp(src1, src2);
116 if (gettimeofday(&t2, NULL) < 0)
117 fatal("gettimeofday");
118 two = toseconds(t2, t1);
119 printf("\tsm_strcasecmp() result: %ld seconds [%ld]\n",
120 two, j);
121
122 if (abs(one - two) > 2)
123 break;
124 loops += loops;
125 if (loops < 0L || one > MAXTIME)
126 {
127 printf("\t\t** results too close: no decision\n");
128 break;
129 }
130 else
131 {
132 printf("\t\t** results too close redoing test %ld times **\n",
133 loops);
134 }
135 }
136 }
137
138 printf("\n\n");
139 printf("Interpreting the results:\n");
140 printf("\tFor differences larger than 2 seconds, the lower value is\n");
141 printf("\tbetter and that function should be used for performance\n");
142 printf("\treasons.\n\n");
143 printf("This program will re-run the tests when the difference is\n");
144 printf("less than 2 seconds.\n");
145 printf("The result will vary depending on the compiler optimization\n"); printf("level used. Compiling the sendmail libsm library with a\n");
146 printf("better optimization level can change the results.\n");
147 return 0;
148}
| 28void
29fatal(str)
30 char *str;
31{
32 perror(str);
33 exit(1);
34}
35
36void
37purpose()
38{
39 printf("This program benchmarks the performance differences between\n");
40 printf("strcasecmp() and sm_strcasecmp().\n");
41 printf("These tests may take several minutes to complete.\n");
42}
43
44int
45main(argc, argv)
46 int argc;
47 char *argv[];
48{
49 long a;
50 int k;
51 bool doit = false;
52 long loops;
53 long j;
54 long one, two;
55 struct timeval t1, t2;
56 char src1[SIZE], src2[SIZE];
57
58# define OPTIONS "d"
59 while ((k = getopt(argc, argv, OPTIONS)) != -1)
60 {
61 switch ((char) k)
62 {
63 case 'd':
64 doit = true;
65 break;
66
67 default:
68 break;
69 }
70 }
71
72 if (!doit)
73 {
74 purpose();
75 printf("If you want to run it, specify -d as option.\n");
76 return 0;
77 }
78
79 /* Run-time comments to the user */
80 purpose();
81 printf("\n");
82 for (k = 0; k < 3; k++)
83 {
84 switch (k)
85 {
86 case 0:
87 (void) sm_strlcpy(src1, "1234567890", SIZE);
88 (void) sm_strlcpy(src2, "1234567890", SIZE);
89 break;
90 case 1:
91 (void) sm_strlcpy(src1, "1234567890", SIZE);
92 (void) sm_strlcpy(src2, "1234567891", SIZE);
93 break;
94 case 2:
95 (void) sm_strlcpy(src1, "1234567892", SIZE);
96 (void) sm_strlcpy(src2, "1234567891", SIZE);
97 break;
98 }
99 printf("Test %d: strcasecmp(%s, %s) versus sm_strcasecmp()\n",
100 k, src1, src2);
101 loops = LOOPS;
102 for (;;)
103 {
104 j = 0;
105 if (gettimeofday(&t1, NULL) < 0)
106 fatal("gettimeofday");
107 for (a = 0; a < loops; a++)
108 j += strcasecmp(src1, src2);
109 if (gettimeofday(&t2, NULL) < 0)
110 fatal("gettimeofday");
111 one = toseconds(t2, t1);
112 printf("\tstrcasecmp() result: %ld seconds [%ld]\n",
113 one, j);
114
115 j = 0;
116 if (gettimeofday(&t1, NULL) < 0)
117 fatal("gettimeofday");
118 for (a = 0; a < loops; a++)
119 j += sm_strcasecmp(src1, src2);
120 if (gettimeofday(&t2, NULL) < 0)
121 fatal("gettimeofday");
122 two = toseconds(t2, t1);
123 printf("\tsm_strcasecmp() result: %ld seconds [%ld]\n",
124 two, j);
125
126 if (abs(one - two) > 2)
127 break;
128 loops += loops;
129 if (loops < 0L || one > MAXTIME)
130 {
131 printf("\t\t** results too close: no decision\n");
132 break;
133 }
134 else
135 {
136 printf("\t\t** results too close redoing test %ld times **\n",
137 loops);
138 }
139 }
140 }
141
142 printf("\n\n");
143 printf("Interpreting the results:\n");
144 printf("\tFor differences larger than 2 seconds, the lower value is\n");
145 printf("\tbetter and that function should be used for performance\n");
146 printf("\treasons.\n\n");
147 printf("This program will re-run the tests when the difference is\n");
148 printf("less than 2 seconds.\n");
149 printf("The result will vary depending on the compiler optimization\n"); printf("level used. Compiling the sendmail libsm library with a\n");
150 printf("better optimization level can change the results.\n");
151 return 0;
152}
|