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 #include "qemu/osdep.h"
  16 #include "qemu-common.h"
  17 #include "block/thread-pool.h"
  18 #include "qemu/coroutine.h"
  19 #include "coth.h"
  20
  21 /* Called from QEMU I/O thread.  */
  22 static void coroutine_enter_cb(void *opaque, int ret)
  23 {
  24     Coroutine *co = opaque;
  25     qemu_coroutine_enter(co, NULL);
  26 }
  27
  28 /* Called from worker thread.  */
  29 static int coroutine_enter_func(void *arg)
  30 {
  31     Coroutine *co = arg;
  32     qemu_coroutine_enter(co, NULL);
  33     return 0;
  34 }
  35
  36 void co_run_in_worker_bh(void *opaque)
  37 {
  38     Coroutine *co = opaque;
  39     thread_pool_submit_aio(aio_get_thread_pool(qemu_get_aio_context()),
  40                            coroutine_enter_func, co, coroutine_enter_cb, co);
  41 }