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    bool run_gcontext;          /* whether we should run gcontext */
  28    GMainContext *worker_context;
  29    GMainLoop *main_loop;
  30    QemuSemaphore init_done_sem; /* is thread init done? */
  31    bool stopping;              /* has iothread_stop() been called? */
  32    bool running;               /* should iothread_run() continue? */
  33    int thread_id;
  34
  35    /* AioContext poll parameters */
  36    int64_t poll_max_ns;
  37    int64_t poll_grow;
  38    int64_t poll_shrink;
  39} IOThread;
  40
  41#define IOTHREAD(obj) \
  42   OBJECT_CHECK(IOThread, obj, TYPE_IOTHREAD)
  43
  44char *iothread_get_id(IOThread *iothread);
  45IOThread *iothread_by_id(const char *id);
  46AioContext *iothread_get_aio_context(IOThread *iothread);
  47GMainContext *iothread_get_g_main_context(IOThread *iothread);
  48
  49/*
  50 * Helpers used to allocate iothreads for internal use.  These
  51 * iothreads will not be seen by monitor clients when query using
  52 * "query-iothreads".
  53 */
  54IOThread *iothread_create(const char *id, Error **errp);
  55void iothread_stop(IOThread *iothread);
  56void iothread_destroy(IOThread *iothread);
  57
  58#endif /* IOTHREAD_H */
  59