LXR qemu/hw/9pfs/coth.c

   1/*
   2 * 9p backend
   3 *
   4 * Copyright IBM, Corp. 2010
   5 *
   6 * Authors:
   7 *  Harsh Prateek Bora <harsh@linux.vnet.ibm.com>
   8 *  Venkateswararao Jujjuri(JV) <jvrao@linux.vnet.ibm.com>
   9 *
  10 * This work is licensed under the terms of the GNU GPL, version 2.  See
  11 * the COPYING file in the top-level directory.
  12 *
  13 */
  14
  15/*
  16 * Not so fast! You might want to read the 9p developer docs first:
  17 * https://wiki.qemu.org/Documentation/9p
  18 */
  19
  20#include "qemu/osdep.h"
  21#include "block/thread-pool.h"
  22#include "qemu/coroutine.h"
  23#include "qemu/main-loop.h"
  24#include "coth.h"
  25
  26/* Called from QEMU I/O thread.  */
  27static void coroutine_enter_cb(void *opaque, int ret)
  28{
  29    Coroutine *co = opaque;
  30    qemu_coroutine_enter(co);
  31}
  32
  33/* Called from worker thread.  */
  34static int coroutine_enter_func(void *arg)
  35{
  36    Coroutine *co = arg;
  37    qemu_coroutine_enter(co);
  38    return 0;
  39}
  40
  41void co_run_in_worker_bh(void *opaque)
  42{
  43    Coroutine *co = opaque;
  44    thread_pool_submit_aio(aio_get_thread_pool(qemu_get_aio_context()),
  45                           coroutine_enter_func, co, coroutine_enter_cb, co);
  46}
  47