xref: /openbmc/qemu/hw/9pfs/coth.c (revision aef04fc7)
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.  */
coroutine_enter_cb(void * opaque,int ret)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.  */
coroutine_enter_func(void * arg)34 static int coroutine_enter_func(void *arg)
35 {
36     Coroutine *co = arg;
37     qemu_coroutine_enter(co);
38     return 0;
39 }
40 
co_run_in_worker_bh(void * opaque)41 void co_run_in_worker_bh(void *opaque)
42 {
43     Coroutine *co = opaque;
44     thread_pool_submit_aio(coroutine_enter_func, co, coroutine_enter_cb, co);
45 }
46