LXR qemu/include/sysemu/iothread.h

   1/*
   2 * Event loop thread
   3 *
   4 * Copyright Red Hat Inc., 2013
   5 *
   6 * Authors:
   7 *  Stefan Hajnoczi   <stefanha@redhat.com>
   8 *
   9 * This work is licensed under the terms of the GNU GPL, version 2 or later.
  10 * See the COPYING file in the top-level directory.
  11 *
  12 */
  13
  14#ifndef IOTHREAD_H
  15#define IOTHREAD_H
  16
  17#include "block/aio.h"
  18#include "qemu/thread.h"
  19
  20#define TYPE_IOTHREAD "iothread"
  21
  22typedef struct {
  23    Object parent_obj;
  24
  25    QemuThread thread;
  26    AioContext *ctx;
  27    GMainContext *worker_context;
  28    GMainLoop *main_loop;
  29    GOnce once;
  30    QemuMutex init_done_lock;
  31    QemuCond init_done_cond;    /* is thread initialization done? */
  32    bool stopping;              /* has iothread_stop() been called? */
  33    bool running;               /* should iothread_run() continue? */
  34    int thread_id;
  35
  36    /* AioContext poll parameters */
  37    int64_t poll_max_ns;
  38    int64_t poll_grow;
  39    int64_t poll_shrink;
  40} IOThread;
  41
  42#define IOTHREAD(obj) \
  43   OBJECT_CHECK(IOThread, obj, TYPE_IOTHREAD)
  44
  45char *iothread_get_id(IOThread *iothread);
  46IOThread *iothread_by_id(const char *id);
  47AioContext *iothread_get_aio_context(IOThread *iothread);
  48GMainContext *iothread_get_g_main_context(IOThread *iothread);
  49
  50/*
  51 * Helpers used to allocate iothreads for internal use.  These
  52 * iothreads will not be seen by monitor clients when query using
  53 * "query-iothreads".
  54 */
  55IOThread *iothread_create(const char *id, Error **errp);
  56void iothread_stop(IOThread *iothread);
  57void iothread_destroy(IOThread *iothread);
  58
  59#endif /* IOTHREAD_H */
  60