qemu

FORK: QEMU emulator
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coth.c (1078B)

      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.  */
     27 static 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.  */
     34 static int coroutine_enter_func(void *arg)
     35 {
     36     Coroutine *co = arg;
     37     qemu_coroutine_enter(co);
     38     return 0;
     39 }
     40 
     41 void 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 }