Merge "Raise alarm callback thread priority" into mnc-dr-dev

#include "osi/include/semaphore.h"

#include "osi/include/thread.h"

// Make callbacks run at high thread priority. Some callbacks are used for audio

// related timer tasks as well as re-transmissions etc. Since we at this point

// cannot differentiate what callback we are dealing with, assume high priority

// for now.

// TODO(eisenbach): Determine correct thread priority (from parent?/per alarm?)

static const int CALLBACK_THREAD_PRIORITY_HIGH = -19;

struct alarm_t {

  // The lock is held while the callback for this alarm is being executed.

  // It allows us to release the coarse-grained monitor lock while a potentially

    goto error;

  }

  thread_set_priority(callback_thread, CALLBACK_THREAD_PRIORITY_HIGH);

  thread_post(callback_thread, callback_dispatch, NULL);

  return true;