Coroutines: Adapted to new timers and set to pthreads if possible

#include "lib/coroutine.h"

#include "lib/resource.h"

#include "lib/socket.h"

#include "lib/timer.h"

#include "sysdep/unix/unix.h"

#define CORO_STACK_SIZE 65536

#if 1

#if ! USE_PTHREADS

/*

 *	Implementation of coroutines based on <ucontext.h>

  .memsize = coro_memsize,

};

extern pthread_key_t current_time_key;

static void *

coro_do_start(void *c_)

{

  coroutine *c = c_;

  pthread_setspecific(current_time_key, &main_timeloop);

  while (sem_wait(&c->sem) < 0)

    ;

  coro_current = c;