tombl.dev
Distro for Linux for WebAssembly
1#define _GNU_SOURCE
2#include <stdlib.h>
3#include <sched.h>
4#include <stdio.h>
5#include <sys/utsname.h>
6#include <unistd.h>
7
8static int foo = 0;
9
10int other(void *arg) {
11 printf("hello from other thread: %d\n", foo);
12 return 0;
13}
14
15int main(int argc, char *argv[]) {
16 printf("Hello, world!\n");
17
18 printf("pid = %d\n", getpid());
19
20 struct utsname sysinfo;
21 if (uname(&sysinfo) == -1) {
22 perror("uname");
23 return 1;
24 }
25
26 printf("%s %s %s\n", sysinfo.sysname, sysinfo.release, sysinfo.version);
27
28 printf("argc = %d\n", argc);
29 for (int i = 0; i < argc; i++)
30 printf("argv[%d] = %s\n", i, argv[i]);
31 for (int i = 0; environ[i]; i++)
32 printf("environ[%d] = %s\n", i, environ[i]);
33
34 foo = 1;
35 void* stack = malloc(4096);
36 if (!stack) {
37 perror("malloc");
38 return 1;
39 }
40
41 if (clone(other, stack + 4096, CLONE_VM | CLONE_VFORK, NULL) == -1) {
42 perror("clone");
43 return 1;
44 }
45
46 free(stack);
47
48 printf("idling forever\n");
49 for (;;)
50 sched_yield();
51
52 return 0;
53}