blob: d9b6332f5376516a6869b1c27fd87ee2687ef9e6 (
plain) (
blame)
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
|
#include <tce/syscall.h>
#include <stdio.h>
#include <stdlib.h>
#include <sched.h>
int threads = 1;
mutex_t d_mutex = MUTEX_UNLOCKED;
int d_pos = 0;
int vgatxt = -1;
void display_it(char k) {
mutex_lock(&d_mutex);
// just display some stuff on /.dev/vgatxt
if (vgatxt == -1) {
vgatxt = open("/.dev/vgatxt", FM_READ | FM_WRITE);
}
uint16_t c = k | (4 << 8);
write(vgatxt, 2 * d_pos, 2, (char*)&c);
d_pos++;
mutex_unlock(&d_mutex);
}
void thread_cascade(void* d) {
int n = (int)d;
char *v = malloc(2048);
if (!v) display_it('!');
if (d == 0) {
//printk("{#} 0 cascade element started => end\n");
printk("*");
} else {
if (n < 0) {
//printk("{#} - cascade element started\n");
display_it('-');
n = 0 - n;
} else {
//printk("{#} + cascade element started\n");
display_it('+');
}
//printk("{#} FORK + ...\n");
display_it('>');
threads += 2;
thread_new(thread_cascade, (void*)(n - 1));
//printk("{#} FORK - ...\n");
display_it('<');
thread_new(thread_cascade, (void*)(1 - n));
//printk("{#} Thread cascade element finished.\n");
display_it('.');
}
free(v);
threads--;
}
void useless_thread(void* d) {
while(1) {
display_it('~');
schedule();
}
}
int main(int argc, char** args) {
printk("(test) Creating thread cascade (total 2**7 = 128 threads)\n");
thread_new(useless_thread, 0);
thread_new(thread_cascade, (void*)7);
while (1) {
schedule();
if (threads == 0) break;
}
printk("\n(test) Test process exiting. Press the super key to go to the home terminal.\n");
printf("(test) End.\n");
return 0;
}
|
