mop3/init/init.c

#include <limits.h>
#include <m/proc.h>
#include <stddef.h>
#include <stdint.h>
#include <string/string.h>

char c = 'a';
int mutex_rid;

void mythread (void) {
  for (;;) {
    proc_mutex_lock (mutex_rid);
    for (size_t i = 0; i < 3; i++)
      proc_test ('b');
    proc_mutex_unlock (mutex_rid);
  }
}

void make_thread (void* fn) {
  size_t stack_pages = 256;
  size_t stack_size = PAGE_SIZE * stack_pages;

  uintptr_t out_paddr;
  int mem_rid = proc_create_resource_mem (100, stack_pages, RV_PRIVATE, &out_paddr);
  proc_map (out_paddr, PROC_MAP_BASE, stack_pages, PM_PRESENT | PM_RW | PM_USER);
  memset ((void*)PROC_MAP_BASE, 0, stack_size);

  uintptr_t vstack_top = PROC_MAP_BASE + stack_size;
  proc_spawn_thread (vstack_top, stack_size, fn);
}

void app_main (void) {
  mutex_rid = proc_create_resource_mutex (200, RV_PRIVATE);

  make_thread (&mythread);

  for (;;) {
    proc_mutex_lock (mutex_rid);
    for (size_t i = 0; i < 3; i++)
      proc_test ('a');
    proc_mutex_unlock (mutex_rid);
  }
}