4 * Copyright IBM, Corp. 2010
7 * Harsh Prateek Bora <harsh@linux.vnet.ibm.com>
8 * Venkateswararao Jujjuri(JV) <jvrao@linux.vnet.ibm.com>
10 * This work is licensed under the terms of the GNU GPL, version 2. See
11 * the COPYING file in the top-level directory.
15 #include "qemu-char.h"
16 #include "fsdev/qemu-fsdev.h"
17 #include "qemu-thread.h"
18 #include "qemu-coroutine.h"
19 #include "virtio-9p-coth.h"
21 /* v9fs glib thread pool */
22 static V9fsThPool v9fs_pool;
24 void co_run_in_worker_bh(void *opaque)
26 Coroutine *co = opaque;
27 g_thread_pool_push(v9fs_pool.pool, co, NULL);
30 static void v9fs_qemu_process_req_done(void *arg)
37 len = read(v9fs_pool.rfd, &byte, sizeof(byte));
38 } while (len == -1 && errno == EINTR);
40 while ((co = g_async_queue_try_pop(v9fs_pool.completed)) != NULL) {
41 qemu_coroutine_enter(co, NULL);
45 static void v9fs_thread_routine(gpointer data, gpointer user_data)
51 qemu_coroutine_enter(co, NULL);
53 g_async_queue_push(v9fs_pool.completed, co);
55 len = write(v9fs_pool.wfd, &byte, sizeof(byte));
56 } while (len == -1 && errno == EINTR);
59 int v9fs_init_worker_threads(void)
63 V9fsThPool *p = &v9fs_pool;
67 /* Leave signal handling to the iothread. */
68 pthread_sigmask(SIG_SETMASK, &set, &oldset);
70 if (qemu_pipe(notifier_fds) == -1) {
74 p->pool = g_thread_pool_new(v9fs_thread_routine, p, -1, FALSE, NULL);
79 p->completed = g_async_queue_new();
82 * We are going to terminate.
83 * So don't worry about cleanup
88 p->rfd = notifier_fds[0];
89 p->wfd = notifier_fds[1];
91 fcntl(p->rfd, F_SETFL, O_NONBLOCK);
92 fcntl(p->wfd, F_SETFL, O_NONBLOCK);
94 qemu_set_fd_handler(p->rfd, v9fs_qemu_process_req_done, NULL, NULL);
96 pthread_sigmask(SIG_SETMASK, &oldset, NULL);