/
stack.c
182 lines (150 loc) · 3.34 KB
/
stack.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
#include <stdio.h>
#include <nstdutil.h>
#include <nstopwatch.h>
/* extern NDRX_API int ndrx_bench_write_stats(double msgsize, double callspersec); */
static int M_fill = 0;
long sum, sump;
char rnd_block[1000000];
void fill_block(char *block, int size)
{
int i;
if (M_fill)
{
memcpy(block, rnd_block, size);
for (i=0; i<size; i+=10)
{
sum+=block[i];
}
}
sump += (long)block;
}
int use_stack(int *sizes)
{
char buf0[sizes[0]];
char buf1[sizes[1]];
char buf2[sizes[2]];
char buf3[sizes[3]];
char buf4[sizes[4]];
char buf5[sizes[5]];
char buf6[sizes[6]];
char buf7[sizes[7]];
char buf8[sizes[8]];
char buf9[sizes[9]];
fill_block(buf0, sizes[0]);
fill_block(buf1, sizes[1]);
fill_block(buf2, sizes[2]);
fill_block(buf3, sizes[3]);
fill_block(buf4, sizes[4]);
fill_block(buf5, sizes[5]);
fill_block(buf6, sizes[6]);
fill_block(buf7, sizes[7]);
fill_block(buf8, sizes[8]);
fill_block(buf9, sizes[9]);
}
int use_heap(int *sizes)
{
char *buf0 = malloc(sizes[0]);
char *buf1 = malloc(sizes[1]);
char *buf2 = malloc(sizes[2]);
char *buf3 = malloc(sizes[3]);
char *buf4 = malloc(sizes[4]);
char *buf5 = malloc(sizes[5]);
char *buf6 = malloc(sizes[6]);
char *buf7 = malloc(sizes[7]);
char *buf8 = malloc(sizes[8]);
char *buf9 = malloc(sizes[9]);
fill_block(buf0, sizes[0]);
fill_block(buf1, sizes[1]);
fill_block(buf2, sizes[2]);
fill_block(buf3, sizes[3]);
fill_block(buf4, sizes[4]);
fill_block(buf5, sizes[5]);
fill_block(buf6, sizes[6]);
fill_block(buf7, sizes[7]);
fill_block(buf8, sizes[8]);
fill_block(buf9, sizes[9]);
free(buf0);
free(buf1);
free(buf2);
free(buf3);
free(buf4);
free(buf5);
free(buf6);
free(buf7);
free(buf8);
free(buf9);
}
long ndrx_stopwatch_get_delta_micro(ndrx_stopwatch_t *timer)
{
struct timespec t;
long ret;
clock_gettime(CLOCK_MONOTONIC, &t);
/* calculate delta */
ret = (t.tv_sec - timer->t.tv_sec) *10000000/* Convert to microsec */ +
(t.tv_nsec - timer->t.tv_nsec)/1000; /* Convert to microsec */
return ret;
}
int main(int argc, char **argv)
{
int i, j, n;
int sizes[10];
int alloc_size;
ndrx_stopwatch_t w;
long result;
long loops;
time_t t;
if (argc < 5)
{
fprintf(stderr, "Usage: %s s|h f|n nrloops 1|2\n", argv[0]);
fprintf(stderr, "where \n");
fprintf(stderr, "\ts - stack test\n");
fprintf(stderr, "\th - heap test\n");
fprintf(stderr, "\tf - fill data\n");
fprintf(stderr, "\tn - no data fill\n");
fprintf(stderr, "\tnrloops - number of iterations per size\n");
fprintf(stderr, "\t1 - -O1 used\n");
fprintf(stderr, "\t2 - -O2 used\n");
return -1;
}
loops = atol(argv[3]);
fprintf(stderr, "loops: %ld\n", loops);
if ('f'==argv[2][0])
{
M_fill = 1;
}
for (i=0; i<sizeof(rnd_block); i++)
{
rnd_block[i] = rand() % 255;
}
for (i=30; i<8000; i+=1024)
{
alloc_size = 0;
sum = 0;
sump = 0;
for (j=0; j<10; j++)
{
sizes[j] = i / (j+1) * 3;
alloc_size+=sizes[j];
}
ndrx_stopwatch_reset(&w);
for (n=0; n<loops; n++)
{
if ('s'==argv[1][0])
{
use_stack(sizes);
}
else
{
use_heap(sizes);
}
}
/* read in millis */
result = ndrx_stopwatch_get_delta(&w);
if (0!=ndrx_bench_write_stats(alloc_size, (double)result))
{
fprintf(stderr, "Failed to plot results\n");
return -1;
}
fprintf(stderr, "sum %ld ptr %ld\n", sum, sump);
}
}