#if 0 /*─────────────────────────────────────────────────────────────────╗ │ To the extent possible under law, Justine Tunney has waived │ │ all copyright and related or neighboring rights to this file, │ │ as it is written in the following disclaimers: │ │ • http://unlicense.org/ │ │ • http://creativecommons.org/publicdomain/zero/1.0/ │ ╚─────────────────────────────────────────────────────────────────*/ #endif #include "libc/calls/calls.h" #include "libc/log/check.h" #include "libc/log/log.h" #include "libc/nt/nt/process.h" #include "libc/rand/rand.h" #include "libc/runtime/runtime.h" #include "libc/stdio/stdio.h" #include "libc/time/time.h" noinline void dostuff(const char *s) { int i, us; srand(rand64()); /* seeds rand() w/ intel rdrnd, auxv, etc. */ for (i = 0; i < 5; ++i) { us = rand() % 500000; usleep(us); printf("hello no. %u from %s %u [us=%d]\n", i, s, getpid(), us); fflush(stdout); } } int main(int argc, char *argv[]) { int rc, child, wstatus; CHECK_NE(-1, (child = fork())); if (!child) { /* child process */ dostuff("child"); return 0; } else { /* parent process */ dostuff("parent"); /* note: abandoned children become zombies */ CHECK_NE(-1, (rc = wait(&wstatus))); CHECK_EQ(0, WEXITSTATUS(wstatus)); return 0; } }