Class: UringMachine

Inherits:
Object
  • Object
show all
Defined in:
lib/uringmachine.rb,
lib/uringmachine/actor.rb,
lib/uringmachine/version.rb,
lib/uringmachine/dns_resolver.rb,
lib/uringmachine/fiber_scheduler.rb,
ext/um/um_class.c

Defined Under Namespace

Modules: FiberExtensions, ThreadExtensions Classes: Actor, AsyncOp, BlockingOperationThreadPool, DNSResolver, Error, FiberScheduler, Mutex, Queue, Stream, Terminate

Constant Summary collapse

VERSION = 
'0.23.1'
@@fiber_map = 
{}

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ Object 



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# File 'ext/um/um_class.c', line 88

VALUE UM_initialize(int argc, VALUE *argv, VALUE self) {
  struct um *machine = RTYPEDDATA_DATA(self);
  VALUE entries;
  VALUE sqpoll_timeout;
  rb_scan_args(argc, argv, "02", &entries, &sqpoll_timeout);

  uint entries_i = NIL_P(entries) ? 0 : NUM2UINT(entries);
  uint sqpoll_timeout_msec = get_sqpoll_timeout_msec(sqpoll_timeout);


  um_setup(self, machine, entries_i, sqpoll_timeout_msec);
  return self;
}

Class Method Details

.debug(str) ⇒ Object 



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# File 'ext/um/um_class.c', line 569

VALUE UM_debug(VALUE self, VALUE str) {
  fprintf(stderr, "%s\n", StringValueCStr(str));
  return Qnil;
}

.io_nonblock?(io) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'ext/um/um_class.c', line 537

VALUE UM_io_nonblock_p(VALUE self, VALUE io) {
  int fd = rb_io_descriptor(io);
  int oflags = fcntl(fd, F_GETFL);
  if (oflags == -1) return Qnil;

  return (oflags & O_NONBLOCK) ? Qtrue : Qfalse;
}

.io_set_nonblock(io, nonblock) ⇒ Object 



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# File 'ext/um/um_class.c', line 545

VALUE UM_io_set_nonblock(VALUE self, VALUE io, VALUE nonblock) {
  int fd = rb_io_descriptor(io);
  int oflags = fcntl(fd, F_GETFL);
  if (oflags == -1) return Qnil;

  if (RTEST(nonblock)) {
    if (!(oflags & O_NONBLOCK)) {
      oflags |= O_NONBLOCK;
      fcntl(fd, F_SETFL, oflags);
    }
  }
  else {
    if (oflags & O_NONBLOCK) {
      oflags &= ~O_NONBLOCK;
      fcntl(fd, F_SETFL, oflags);
    }
  }
  return nonblock;
}

.kernel_version ⇒ Object 



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# File 'ext/um/um_class.c', line 565

VALUE UM_kernel_version(VALUE self) {
  return INT2NUM(UM_KERNEL_VERSION);
}

.pidfd_open(pid) ⇒ Object 



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# File 'ext/um/um_class.c', line 515

VALUE UM_pidfd_open(VALUE self, VALUE pid) {
  int fd = syscall(SYS_pidfd_open, NUM2INT(pid), 0);
  if (fd == -1) {
    int e = errno;
    rb_syserr_fail(e, strerror(e));
  }

  return INT2NUM(fd);
}

.pidfd_send_signal(fd, sig) ⇒ Object 



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# File 'ext/um/um_class.c', line 525

VALUE UM_pidfd_send_signal(VALUE self, VALUE fd, VALUE sig) {
  int ret = syscall(
    SYS_pidfd_send_signal, NUM2INT(fd), NUM2INT(sig), NULL, 0
  );
  if (ret) {
    int e = errno;
    rb_syserr_fail(e, strerror(e));
  }

  return fd;
}

.pipe ⇒ Object 



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# File 'ext/um/um_class.c', line 493

VALUE UM_pipe(VALUE self) {
  int fds[2];
  int ret = pipe(fds);
  if (ret) {
    int e = errno;
    rb_syserr_fail(e, strerror(e));
  }

  return rb_ary_new_from_args(2, INT2NUM(fds[0]), INT2NUM(fds[1]));
}

.socketpair(domain, type, protocol) ⇒ Object 



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# File 'ext/um/um_class.c', line 504

VALUE UM_socketpair(VALUE self, VALUE domain, VALUE type, VALUE protocol) {
  int fds[2];
  int ret = socketpair(NUM2INT(domain), NUM2INT(type), NUM2INT(protocol), fds);
  if (ret) {
    int e = errno;
    rb_syserr_fail(e, strerror(e));
  }

  return rb_ary_new_from_args(2, INT2NUM(fds[0]), INT2NUM(fds[1]));
}

Instance Method Details

#accept(fd) ⇒ Object 



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# File 'ext/um/um_class.c', line 277

VALUE UM_accept(VALUE self, VALUE fd) {
  struct um *machine = um_get_machine(self);
  return um_accept(machine, NUM2INT(fd));
}

#accept_each(fd) ⇒ Object 



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# File 'ext/um/um_class.c', line 282

VALUE UM_accept_each(VALUE self, VALUE fd) {
  struct um *machine = um_get_machine(self);
  return um_accept_each(machine, NUM2INT(fd));
}

#accept_into_queue(fd, queue) ⇒ Object 



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# File 'ext/um/um_class.c', line 287

VALUE UM_accept_into_queue(VALUE self, VALUE fd, VALUE queue) {
  struct um *machine = um_get_machine(self);
  return um_accept_into_queue(machine, NUM2INT(fd), queue);
}

#await_fibers(fibers) ⇒ Object 



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# File 'lib/uringmachine.rb', line 56

def await_fibers(fibers)
  if fibers.is_a?(Fiber)
    f = fibers
    if !f.done?
      queue = Fiber.current.mailbox
      f.add_done_listener(queue)
      self.shift(queue)
    end
    return 1
  end

  queue = nil
  pending = nil
  fibers.each do |f|
    if !f.done?
      (pending ||= []) << f
      queue ||= Fiber.current.mailbox
      f.add_done_listener(queue)
    end
  end
  if pending
    while !pending.empty?
      f = self.shift(queue)
      pending.delete(f)
    end
  end
  fibers.count
end

#bind(fd, host, port) ⇒ Object 



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# File 'ext/um/um_class.c', line 362

VALUE UM_bind(VALUE self, VALUE fd, VALUE host, VALUE port) {
  struct sockaddr_in addr;
  memset(&addr, 0, sizeof(addr));
  addr.sin_family = AF_INET;
  addr.sin_addr.s_addr = inet_addr(StringValueCStr(host));
  addr.sin_port = htons(NUM2INT(port));

#ifdef HAVE_IO_URING_PREP_BIND
  struct um *machine = um_get_machine(self);
  return um_bind(machine, NUM2INT(fd), (struct sockaddr *)&addr, sizeof(addr));
#else
  int res = bind(NUM2INT(fd), (struct sockaddr *)&addr, sizeof(addr));
  if (res)
    rb_syserr_fail(errno, strerror(errno));
  return INT2NUM(0);
#endif
}

#close(fd) ⇒ Object 



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# File 'ext/um/um_class.c', line 267

VALUE UM_close(VALUE self, VALUE fd) {
  struct um *machine = um_get_machine(self);
  return um_close(machine, NUM2INT(fd));
}

#close_async(fd) ⇒ Object 



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# File 'ext/um/um_class.c', line 272

VALUE UM_close_async(VALUE self, VALUE fd) {
  struct um *machine = um_get_machine(self);
  return um_close_async(machine, NUM2INT(fd));
}

#connect(fd, host, port) ⇒ Object 



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# File 'ext/um/um_class.c', line 307

VALUE UM_connect(VALUE self, VALUE fd, VALUE host, VALUE port) {
  struct um *machine = um_get_machine(self);

  struct sockaddr_in addr;
  memset(&addr, 0, sizeof(addr));
  addr.sin_family = AF_INET;
  addr.sin_addr.s_addr = inet_addr(StringValueCStr(host));
  addr.sin_port = htons(NUM2INT(port));

  return um_connect(machine, NUM2INT(fd), (struct sockaddr *)&addr, sizeof(addr));
}

#fiber_map ⇒ Object 



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# File 'lib/uringmachine.rb', line 12

def fiber_map
  @@fiber_map
end

#getsockopt(fd, level, opt) ⇒ Object 



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# File 'ext/um/um_class.c', line 403

VALUE UM_getsockopt(VALUE self, VALUE fd, VALUE level, VALUE opt) {
  struct um *machine = um_get_machine(self);
  return um_getsockopt(machine, NUM2INT(fd), NUM2INT(level), NUM2INT(opt));
}

#join(*fibers) ⇒ Object 



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# File 'lib/uringmachine.rb', line 32

def join(*fibers)
  results = fibers.inject({}) { |h, f| h[f] = nil; h }
  queue = nil
  pending = nil
  fibers.each do |f|
    if f.done?
      results[f] = f.result
    else
      (pending ||= []) << f
      queue ||= Fiber.current.mailbox
      f.add_done_listener(queue)
    end
  end
  if pending
    while !pending.empty?
      f = self.shift(queue)
      pending.delete(f)
      results[f] = f.result
    end
  end
  values = results.values
  fibers.size == 1 ? values.first : values
end

#listen(fd, backlog) ⇒ Object 



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# File 'ext/um/um_class.c', line 380

VALUE UM_listen(VALUE self, VALUE fd, VALUE backlog) {
#ifdef HAVE_IO_URING_PREP_LISTEN
  struct um *machine = um_get_machine(self);
  return um_listen(machine, NUM2INT(fd), NUM2INT(backlog));
#else
  int res = listen(NUM2INT(fd), NUM2INT(backlog));
  if (res)
    rb_syserr_fail(errno, strerror(errno));
  return INT2NUM(0);
#endif
}

#mark(mark) ⇒ Object 



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# File 'ext/um/um_class.c', line 113

VALUE UM_mark_m(VALUE self, VALUE mark) {
  struct um *machine = um_get_machine(self);
  machine->mark = NUM2UINT(mark);
  return self;
}

#metrics ⇒ Object 



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# File 'ext/um/um_class.c', line 119

VALUE UM_metrics(VALUE self) {
  struct um *machine = um_get_machine(self);
  return um_metrics(machine, &machine->metrics);
}

#open(pathname, flags) ⇒ Object 



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# File 'ext/um/um_class.c', line 454

VALUE UM_open(VALUE self, VALUE pathname, VALUE flags) {
  struct um *machine = um_get_machine(self);
  // TODO: take optional perm (mode) arg
  VALUE fd = um_open(machine, pathname, NUM2INT(flags), 0666);
  if (rb_block_given_p()) {
    struct um_open_ctx ctx = { self, fd };
    return rb_ensure(rb_yield, fd, UM_open_complete, (VALUE)&ctx);
  }
  else
    return fd;
}

#pending_fibers ⇒ Object 



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# File 'ext/um/um_class.c', line 177

VALUE UM_pending_fibers(VALUE self) {
  struct um *machine = um_get_machine(self);
  return machine->pending_fibers;
}

#periodically(interval) ⇒ Object 



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# File 'ext/um/um_class.c', line 198

VALUE UM_periodically(VALUE self, VALUE interval) {
  struct um *machine = um_get_machine(self);
  return um_periodically(machine, NUM2DBL(interval));
}

#poll(fd, mask) ⇒ Object 



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# File 'ext/um/um_class.c', line 466

VALUE UM_poll(VALUE self, VALUE fd, VALUE mask) {
  struct um *machine = um_get_machine(self);
  return um_poll(machine, NUM2INT(fd), NUM2UINT(mask));
}

#pop(queue) ⇒ Object 



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# File 'ext/um/um_class.c', line 425

VALUE UM_queue_pop(VALUE self, VALUE queue) {
  struct um *machine = um_get_machine(self);
  struct um_queue *que = Queue_data(queue);
  return um_queue_pop(machine, que);
}

#prep_timeout(interval) ⇒ Object 



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# File 'ext/um/um_class.c', line 488

VALUE UM_prep_timeout(VALUE self, VALUE interval) {
  struct um *machine = um_get_machine(self);
  return um_prep_timeout(machine, NUM2DBL(interval));
}

#profile(value) ⇒ Object 



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# File 'ext/um/um_class.c', line 129

VALUE UM_profile_set(VALUE self, VALUE value) {
  struct um *machine = um_get_machine(self);
  machine->profile_mode = RTEST(value);
  if (machine->profile_mode) {
    machine->metrics.time_total_wait = 0.0;
    machine->metrics.time_last_cpu = machine->metrics.time_first_cpu = um_get_time_cpu();
  }
  return value;
}

#profile? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'ext/um/um_class.c', line 124

VALUE UM_profile_p(VALUE self) {
  struct um *machine = um_get_machine(self);
  return machine->profile_mode ? Qtrue : Qfalse;
}

#push(queue, value) ⇒ Object 



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# File 'ext/um/um_class.c', line 419

VALUE UM_queue_push(VALUE self, VALUE queue, VALUE value) {
  struct um *machine = um_get_machine(self);
  struct um_queue *que = Queue_data(queue);
  return um_queue_push(machine, que, value);
}

#read(*args) ⇒ Object 



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# File 'ext/um/um_class.c', line 203

VALUE UM_read(int argc, VALUE *argv, VALUE self) {
  struct um *machine = um_get_machine(self);
  VALUE fd;
  VALUE buffer;
  VALUE maxlen;
  VALUE buffer_offset;
  VALUE file_offset;
  rb_scan_args(argc, argv, "23", &fd, &buffer, &maxlen, &buffer_offset, &file_offset);

  ssize_t maxlen_i = NIL_P(maxlen) ? -1 : NUM2INT(maxlen);
  ssize_t buffer_offset_i = NIL_P(buffer_offset) ? 0 : NUM2INT(buffer_offset);
  __u64 file_offset_i = NIL_P(file_offset) ? (__u64)-1 : NUM2UINT(file_offset);

  return um_read(machine, NUM2INT(fd), buffer, maxlen_i, buffer_offset_i, file_offset_i);
}

#read_each(fd, bgid) ⇒ Object 



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# File 'ext/um/um_class.c', line 219

VALUE UM_read_each(VALUE self, VALUE fd, VALUE bgid) {
  struct um *machine = um_get_machine(self);
  return um_read_each(machine, NUM2INT(fd), NUM2INT(bgid));
}

#recv(fd, buffer, maxlen, flags) ⇒ Object 



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# File 'ext/um/um_class.c', line 352

VALUE UM_recv(VALUE self, VALUE fd, VALUE buffer, VALUE maxlen, VALUE flags) {
  struct um *machine = um_get_machine(self);
  return um_recv(machine, NUM2INT(fd), buffer, NUM2INT(maxlen), NUM2INT(flags));
}

#recv_each(fd, bgid, flags) ⇒ Object 



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# File 'ext/um/um_class.c', line 357

VALUE UM_recv_each(VALUE self, VALUE fd, VALUE bgid, VALUE flags) {
  struct um *machine = um_get_machine(self);
  return um_recv_each(machine, NUM2INT(fd), NUM2INT(bgid), NUM2INT(flags));
}

#resolve(hostname, type = :A) ⇒ Object 



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# File 'lib/uringmachine.rb', line 85

def resolve(hostname, type = :A)
  @resolver ||= DNSResolver.new(self)
  @resolver.resolve(hostname, type)
end

#run(fiber, &block) ⇒ Object 



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# File 'lib/uringmachine.rb', line 26

def run(fiber, &block)
  run_block_in_fiber(block, fiber, nil)
  self.schedule(fiber, nil)
  @@fiber_map[fiber] = fiber
end

#schedule(fiber, value) ⇒ Object 



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# File 'ext/um/um_class.c', line 182

VALUE UM_schedule(VALUE self, VALUE fiber, VALUE value) {
  struct um *machine = um_get_machine(self);
  um_schedule(machine, fiber, value);
  return self;
}

#select(rfds, wfds, efds) ⇒ Object 



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# File 'ext/um/um_class.c', line 471

VALUE UM_select(VALUE self, VALUE rfds, VALUE wfds, VALUE efds) {
  struct um *machine = um_get_machine(self);
  return um_select(machine, rfds, wfds, efds);
}

#send(fd, buffer, len, flags) ⇒ Object 



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# File 'ext/um/um_class.c', line 319

VALUE UM_send(VALUE self, VALUE fd, VALUE buffer, VALUE len, VALUE flags) {
  struct um *machine = um_get_machine(self);
  return um_send(machine, NUM2INT(fd), buffer, NUM2INT(len), NUM2INT(flags));
}

#send_bundle(*args) ⇒ Object 



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# File 'ext/um/um_class.c', line 336

VALUE UM_send_bundle(int argc, VALUE *argv, VALUE self) {
  struct um *machine = um_get_machine(self);
  VALUE fd;
  VALUE bgid;
  VALUE strings;
  rb_scan_args(argc, argv, "2*", &fd, &bgid, &strings);

  if (RARRAY_LEN(strings) == 1) {
    VALUE first = rb_ary_entry(strings, 0);
    if (TYPE(first) == T_ARRAY)
      strings = first;
  }

  return um_send_bundle(machine, NUM2INT(fd), NUM2INT(bgid), strings);
}

#sendv(*args) ⇒ Object 



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# File 'ext/um/um_class.c', line 325

VALUE UM_sendv(int argc, VALUE *argv, VALUE self) {
  struct um *machine = um_get_machine(self);
  if (argc < 1)
    rb_raise(rb_eArgError, "wrong number of arguments (given 0, expected 1+)");
  int fd = NUM2INT(argv[0]);
  if (argc < 2) return INT2NUM(0);

  return um_sendv(machine, fd, argc - 1, argv + 1);
}

#setsockopt(fd, level, opt, value) ⇒ Object 



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# File 'ext/um/um_class.c', line 408

VALUE UM_setsockopt(VALUE self, VALUE fd, VALUE level, VALUE opt, VALUE value) {
  struct um *machine = um_get_machine(self);
  return um_setsockopt(machine, NUM2INT(fd), NUM2INT(level), NUM2INT(opt), numeric_value(value));
}

#setup_buffer_ring(size, count) ⇒ Object 



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# File 'ext/um/um_class.c', line 102

VALUE UM_setup_buffer_ring(VALUE self, VALUE size, VALUE count) {
  struct um *machine = um_get_machine(self);
  int bgid = um_setup_buffer_ring(machine, NUM2UINT(size), NUM2UINT(count));
  return INT2NUM(bgid);
}

#shift(queue) ⇒ Object 



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# File 'ext/um/um_class.c', line 437

VALUE UM_queue_shift(VALUE self, VALUE queue) {
  struct um *machine = um_get_machine(self);
  struct um_queue *que = Queue_data(queue);
  return um_queue_shift(machine, que);
}

#shutdown(fd, how) ⇒ Object 



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# File 'ext/um/um_class.c', line 297

VALUE UM_shutdown(VALUE self, VALUE fd, VALUE how) {
  struct um *machine = um_get_machine(self);
  return um_shutdown(machine, NUM2INT(fd), NUM2INT(how));
}

#shutdown_async(fd, how) ⇒ Object 



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# File 'ext/um/um_class.c', line 302

VALUE UM_shutdown_async(VALUE self, VALUE fd, VALUE how) {
  struct um *machine = um_get_machine(self);
  return um_shutdown_async(machine, NUM2INT(fd), NUM2INT(how));
}

#size ⇒ Object 



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# File 'ext/um/um_class.c', line 108

VALUE UM_size(VALUE self) {
  struct um *machine = um_get_machine(self);
  return UINT2NUM(machine->size);
}

#sleep(duration) ⇒ Object 



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# File 'ext/um/um_class.c', line 193

VALUE UM_sleep(VALUE self, VALUE duration) {
  struct um *machine = um_get_machine(self);
  return um_sleep(machine, NUM2DBL(duration));
}

#snooze ⇒ Object 



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# File 'ext/um/um_class.c', line 139

VALUE UM_snooze(VALUE self) {
  struct um *machine = um_get_machine(self);
  um_schedule(machine, rb_fiber_current(), Qnil);

  // the current fiber is already scheduled, and the runqueue is GC-marked, so
  // we can safely call um_switch, which is faster than calling um_yield.
  VALUE ret = um_switch(machine);
  RAISE_IF_EXCEPTION(ret);
  return ret;
}

#socket(domain, type, protocol, flags) ⇒ Object 



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# File 'ext/um/um_class.c', line 292

VALUE UM_socket(VALUE self, VALUE domain, VALUE type, VALUE protocol, VALUE flags) {
  struct um *machine = um_get_machine(self);
  return um_socket(machine, NUM2INT(domain), NUM2INT(type), NUM2INT(protocol), NUM2UINT(flags));
}

#spin(value = nil, klass = Fiber, &block) ⇒ Object 



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# File 'lib/uringmachine.rb', line 19

def spin(value = nil, klass = Fiber, &block)
  fiber = klass.new { |v| run_block_in_fiber(block, fiber, v) }
  self.schedule(fiber, value)

  @@fiber_map[fiber] = fiber
end

#spin_actor(mod, *a, **k) ⇒ Object 



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# File 'lib/uringmachine/actor.rb', line 4

def spin_actor(mod, *a, **k)
  target = Object.new.extend(mod)
  mailbox = UM::Queue.new
  actor = spin(nil, Actor) { actor.run(self, target, mailbox) }
  target.setup(*a, **k)
  snooze
  actor
end

#spin_thread_actor(mod, *a, **k) ⇒ Object 



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# File 'lib/uringmachine/actor.rb', line 13

def spin_thread_actor(mod, *a, **k)
  machine = UM.new
  target = Object.new.extend(mod)
  mailbox = UM::Queue.new
  actor = Actor.new
  Thread.new do
    actor.run(machine, target, mailbox)
  end
  target.setup(*a, **k)
  snooze
  actor
end

#statx(dirfd, path, flags, mask) ⇒ Object 



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# File 'ext/um/um_class.c', line 262

VALUE UM_statx(VALUE self, VALUE dirfd, VALUE path, VALUE flags, VALUE mask) {
  struct um *machine = um_get_machine(self);
  return um_statx(machine, NUM2INT(dirfd), path, NUM2INT(flags), NUM2UINT(mask));
}

#submit ⇒ Object 



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# File 'ext/um/um_class.c', line 171

VALUE UM_submit(VALUE self) {
  struct um *machine = um_get_machine(self);
  uint ret = um_submit(machine);
  return UINT2NUM(ret);
}

#switch ⇒ Object 



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# File 'ext/um/um_class.c', line 158

VALUE UM_switch(VALUE self) {
  struct um *machine = um_get_machine(self);

  VALUE ret = um_switch(machine);
  RAISE_IF_EXCEPTION(ret);
  return ret;
}

#synchronize(mutex) ⇒ Object 



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# File 'ext/um/um_class.c', line 413

VALUE UM_mutex_synchronize(VALUE self, VALUE mutex) {
  struct um *machine = um_get_machine(self);
  struct um_mutex *mutex_data = Mutex_data(mutex);
  return um_mutex_synchronize(machine, mutex_data);
}

#timeout(interval, class) ⇒ Object 



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# File 'ext/um/um_class.c', line 188

VALUE UM_timeout(VALUE self, VALUE interval, VALUE class) {
  struct um *machine = um_get_machine(self);
  return um_timeout(machine, interval, class);
}

#unshift(queue, value) ⇒ Object 



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# File 'ext/um/um_class.c', line 431

VALUE UM_queue_unshift(VALUE self, VALUE queue, VALUE value) {
  struct um *machine = um_get_machine(self);
  struct um_queue *que = Queue_data(queue);
  return um_queue_unshift(machine, que, value);
}

#waitid(idtype, id, options) ⇒ Object 



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# File 'ext/um/um_class.c', line 476

VALUE UM_waitid(VALUE self, VALUE idtype, VALUE id, VALUE options) {
  struct um *machine = um_get_machine(self);
  return um_waitid(machine, NUM2INT(idtype), NUM2INT(id), NUM2INT(options));
}

#waitid_status(idtype, id, options) ⇒ Object 



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# File 'ext/um/um_class.c', line 482

VALUE UM_waitid_status(VALUE self, VALUE idtype, VALUE id, VALUE options) {
  struct um *machine = um_get_machine(self);
  return um_waitid_status(machine, NUM2INT(idtype), NUM2INT(id), NUM2INT(options));
}

#wakeup ⇒ Object 



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# File 'ext/um/um_class.c', line 166

VALUE UM_wakeup(VALUE self) {
  struct um *machine = um_get_machine(self);
  return um_wakeup(machine);
}

#write(*args) ⇒ Object 



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# File 'ext/um/um_class.c', line 224

VALUE UM_write(int argc, VALUE *argv, VALUE self) {
  struct um *machine = um_get_machine(self);
  VALUE fd;
  VALUE buffer;
  VALUE len;
  VALUE file_offset;
  rb_scan_args(argc, argv, "22", &fd, &buffer, &len, &file_offset);

  size_t len_i = NIL_P(len) ? (size_t)-1 : NUM2UINT(len);
  __u64 file_offset_i = NIL_P(file_offset) ? (__u64)-1 : NUM2UINT(file_offset);

  return um_write(machine, NUM2INT(fd), buffer, len_i, file_offset_i);
}

#write_async(*args) ⇒ Object 



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# File 'ext/um/um_class.c', line 248

VALUE UM_write_async(int argc, VALUE *argv, VALUE self) {
  struct um *machine = um_get_machine(self);
  VALUE fd;
  VALUE buffer;
  VALUE len;
  VALUE file_offset;
  rb_scan_args(argc, argv, "22", &fd, &buffer, &len, &file_offset);

  size_t len_i = NIL_P(len) ? (size_t)-1 : NUM2UINT(len);
  __u64 file_offset_i = NIL_P(file_offset) ? (__u64)-1 : NUM2UINT(file_offset);

  return um_write_async(machine, NUM2INT(fd), buffer, len_i, file_offset_i);
}

#writev(*args) ⇒ Object 



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# File 'ext/um/um_class.c', line 238

VALUE UM_writev(int argc, VALUE *argv, VALUE self) {
  struct um *machine = um_get_machine(self);
  if (argc < 1)
    rb_raise(rb_eArgError, "wrong number of arguments (given 0, expected 1+)");
  int fd = NUM2INT(argv[0]);
  if (argc < 2) return INT2NUM(0);

  return um_writev(machine, fd, argc - 1, argv + 1);
}

#yield ⇒ Object 



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# File 'ext/um/um_class.c', line 150

VALUE UM_yield(VALUE self) {
  struct um *machine = um_get_machine(self);

  VALUE ret = um_yield(machine);
  RAISE_IF_EXCEPTION(ret);
  return ret;
}