コード例 #1
0
ファイル: nbd.c プロジェクト: marsleezm/qemu
static void nbd_read(void *opaque)
{
    NBDClient *client = opaque;

    if (client->recv_coroutine) {
        qemu_coroutine_enter(client->recv_coroutine, NULL);
    } else {
        qemu_coroutine_enter(qemu_coroutine_create(nbd_trip), client);
    }
}
コード例 #2
0
ファイル: test-coroutine.c プロジェクト: hwc56/qemu-2.3.94
static void test_co_queue(void)
{
    Coroutine *c1;
    Coroutine *c2;

    c1 = qemu_coroutine_create(c1_fn);
    c2 = qemu_coroutine_create(c2_fn);

    qemu_coroutine_enter(c1, c2);
    memset(c1, 0xff, sizeof(Coroutine));
    qemu_coroutine_enter(c2, NULL);
}
コード例 #3
0
ファイル: test-coroutine.c プロジェクト: CRYP706URU/pyrebox
static void coroutine_fn verify_entered_step_1(void *opaque)
{
    Coroutine *self = qemu_coroutine_self();
    Coroutine *coroutine;

    g_assert(qemu_coroutine_entered(self));

    coroutine = qemu_coroutine_create(verify_entered_step_2, self);
    g_assert(!qemu_coroutine_entered(coroutine));
    qemu_coroutine_enter(coroutine);
    g_assert(!qemu_coroutine_entered(coroutine));
    qemu_coroutine_enter(coroutine);
}
コード例 #4
0
ファイル: test-coroutine.c プロジェクト: hwc56/qemu-2.3.94
static void test_self(void)
{
    Coroutine *coroutine;

    coroutine = qemu_coroutine_create(verify_self);
    qemu_coroutine_enter(coroutine, coroutine);
}
コード例 #5
0
ファイル: qemu-io.c プロジェクト: AjayMashi/x-tier
static int do_co_write_zeroes(int64_t offset, int count, int *total)
{
    Coroutine *co;
    CoWriteZeroes data = {
        .offset = offset,
        .count  = count,
        .total  = total,
        .done   = false,
    };

    co = qemu_coroutine_create(co_write_zeroes_entry);
    qemu_coroutine_enter(co, &data);
    while (!data.done) {
        qemu_aio_wait();
    }
    if (data.ret < 0) {
        return data.ret;
    } else {
        return 1;
    }
}

static int do_write_compressed(char *buf, int64_t offset, int count, int *total)
{
    int ret;

    ret = bdrv_write_compressed(bs, offset >> 9, (uint8_t *)buf, count >> 9);
    if (ret < 0) {
        return ret;
    }
    *total = count;
    return 1;
}
コード例 #6
0
int simple_bus_fdt_init(char *bus_node_path, FDTMachineInfo *fdti, void *unused)
{
    int i;
    int num_children = qemu_devtree_get_num_children(fdti->fdt, bus_node_path,
                                                        1);
    char **children = qemu_devtree_get_children(fdti->fdt, bus_node_path, 1);
    int initialRoutinesPending = fdti->routinesPending;

    DB_PRINT("num child devices: %d\n", num_children);

    for (i = 0; i < num_children; i++) {
        struct FDTInitNodeArgs *init_args = g_malloc0(sizeof(*init_args));
        init_args->node_path = children[i];
        init_args->fdti = fdti;
        fdti->routinesPending++;
        qemu_coroutine_enter(qemu_coroutine_create(fdt_init_node), init_args);
    }

    if (fdti->routinesPending != initialRoutinesPending) {
        bdrv_drain_all();
    }

    g_free(children);
    return 0;
}
コード例 #7
0
ファイル: test-coroutine.c プロジェクト: hwc56/qemu-2.3.94
static void test_lifecycle(void)
{
    Coroutine *coroutine;
    bool done = false;

    /* Create, enter, and return from coroutine */
    coroutine = qemu_coroutine_create(set_and_exit);
    qemu_coroutine_enter(coroutine, &done);
    g_assert(done); /* expect done to be true (first time) */

    /* Repeat to check that no state affects this test */
    done = false;
    coroutine = qemu_coroutine_create(set_and_exit);
    qemu_coroutine_enter(coroutine, &done);
    g_assert(done); /* expect done to be true (second time) */
}
コード例 #8
0
/* Create a block job that completes with a given return code after a given
 * number of event loop iterations.  The return code is stored in the given
 * result pointer.
 *
 * The event loop iterations can either be handled automatically with a 0 delay
 * timer, or they can be stepped manually by entering the coroutine.
 */
static BlockJob *test_block_job_start(unsigned int iterations,
                                      bool use_timer,
                                      int rc, int *result)
{
    BlockDriverState *bs;
    TestBlockJob *s;
    TestBlockJobCBData *data;
    static unsigned counter;
    char job_id[24];

    data = g_new0(TestBlockJobCBData, 1);
    bs = bdrv_new();
    snprintf(job_id, sizeof(job_id), "job%u", counter++);
    s = block_job_create(job_id, &test_block_job_driver, bs, 0,
                         BLOCK_JOB_DEFAULT, test_block_job_cb,
                         data, &error_abort);
    s->iterations = iterations;
    s->use_timer = use_timer;
    s->rc = rc;
    s->result = result;
    s->common.co = qemu_coroutine_create(test_block_job_run, s);
    data->job = s;
    data->result = result;
    qemu_coroutine_enter(s->common.co);
    return &s->common;
}
コード例 #9
0
ファイル: blockjob.c プロジェクト: jansonzhou/qemu
void block_job_enter(BlockJob *job)
{
    block_job_iostatus_reset(job);
    if (job->co && !job->busy) {
        qemu_coroutine_enter(job->co, NULL);
    }
}
コード例 #10
0
ファイル: mirror.c プロジェクト: akoskovacs/qemu
static void mirror_iteration_done(MirrorOp *op, int ret)
{
    MirrorBlockJob *s = op->s;
    struct iovec *iov;
    int64_t chunk_num;
    int i, nb_chunks, sectors_per_chunk;

    trace_mirror_iteration_done(s, op->sector_num, op->nb_sectors, ret);

    s->in_flight--;
    iov = op->qiov.iov;
    for (i = 0; i < op->qiov.niov; i++) {
        MirrorBuffer *buf = (MirrorBuffer *) iov[i].iov_base;
        QSIMPLEQ_INSERT_TAIL(&s->buf_free, buf, next);
        s->buf_free_count++;
    }

    sectors_per_chunk = s->granularity >> BDRV_SECTOR_BITS;
    chunk_num = op->sector_num / sectors_per_chunk;
    nb_chunks = op->nb_sectors / sectors_per_chunk;
    bitmap_clear(s->in_flight_bitmap, chunk_num, nb_chunks);
    if (s->cow_bitmap && ret >= 0) {
        bitmap_set(s->cow_bitmap, chunk_num, nb_chunks);
    }

    g_slice_free(MirrorOp, op);
    qemu_coroutine_enter(s->common.co, NULL);
}
コード例 #11
0
ファイル: iscsi.c プロジェクト: MollyZhang/esesc
static void iscsi_co_generic_bh_cb(void *opaque)
{
    struct IscsiTask *iTask = opaque;
    iTask->complete = 1;
    qemu_bh_delete(iTask->bh);
    qemu_coroutine_enter(iTask->co, NULL);
}
コード例 #12
0
ファイル: test-coroutine.c プロジェクト: hwc56/qemu-2.3.94
static void test_nesting(void)
{
    Coroutine *root;
    NestData nd = {
        .n_enter  = 0,
        .n_return = 0,
        .max      = 128,
    };

    root = qemu_coroutine_create(nest);
    qemu_coroutine_enter(root, &nd);

    /* Must enter and return from max nesting level */
    g_assert_cmpint(nd.n_enter, ==, nd.max);
    g_assert_cmpint(nd.n_return, ==, nd.max);
}

/*
 * Check that yield/enter transfer control correctly
 */

static void coroutine_fn yield_5_times(void *opaque)
{
    bool *done = opaque;
    int i;

    for (i = 0; i < 5; i++) {
        qemu_coroutine_yield();
    }
    *done = true;
}
コード例 #13
0
static int do_co_write_zeroes(int64_t offset, int count, int *total)
{
    Coroutine *co;
    CoWriteZeroes data = {
        .offset = offset,
        .count  = count,
        .total  = total,
        .done   = false,
    };

    co = qemu_coroutine_create(co_write_zeroes_entry);
    qemu_coroutine_enter(co, &data);
    while (!data.done) {
        qemu_aio_wait();
    }
    if (data.ret < 0) {
        return data.ret;
    } else {
        return 1;
    }
}

static int do_load_vmstate(char *buf, int64_t offset, int count, int *total)
{
    *total = bdrv_load_vmstate(bs, (uint8_t *)buf, offset, count);
    if (*total < 0) {
        return *total;
    }
    return 1;
}
コード例 #14
0
ファイル: iscsi.c プロジェクト: RomainNaour/qemu
static void
iscsi_co_generic_cb(struct iscsi_context *iscsi, int status,
                        void *command_data, void *opaque)
{
    struct IscsiTask *iTask = opaque;
    struct scsi_task *task = command_data;

    iTask->complete = 1;
    iTask->status = status;
    iTask->do_retry = 0;
    iTask->task = task;

    if (iTask->retries-- > 0 && status == SCSI_STATUS_CHECK_CONDITION
        && task->sense.key == SCSI_SENSE_UNIT_ATTENTION) {
        iTask->do_retry = 1;
        goto out;
    }

    if (status != SCSI_STATUS_GOOD) {
        error_report("iSCSI: Failure. %s", iscsi_get_error(iscsi));
    }

out:
    if (iTask->co) {
        qemu_coroutine_enter(iTask->co, NULL);
    }
}
コード例 #15
0
ファイル: mirror.c プロジェクト: Arch-Linux-MIPS/qemu
static void mirror_start_job(BlockDriverState *bs, BlockDriverState *target,
                             const char *replaces,
                             int64_t speed, int64_t granularity,
                             int64_t buf_size,
                             BlockdevOnError on_source_error,
                             BlockdevOnError on_target_error,
                             BlockDriverCompletionFunc *cb,
                             void *opaque, Error **errp,
                             const BlockJobDriver *driver,
                             bool is_none_mode, BlockDriverState *base)
{
    MirrorBlockJob *s;

    if (granularity == 0) {
        /* Choose the default granularity based on the target file's cluster
         * size, clamped between 4k and 64k.  */
        BlockDriverInfo bdi;
        if (bdrv_get_info(target, &bdi) >= 0 && bdi.cluster_size != 0) {
            granularity = MAX(4096, bdi.cluster_size);
            granularity = MIN(65536, granularity);
        } else {
            granularity = 65536;
        }
    }

    assert ((granularity & (granularity - 1)) == 0);

    if ((on_source_error == BLOCKDEV_ON_ERROR_STOP ||
         on_source_error == BLOCKDEV_ON_ERROR_ENOSPC) &&
        !bdrv_iostatus_is_enabled(bs)) {
        error_set(errp, QERR_INVALID_PARAMETER, "on-source-error");
        return;
    }


    s = block_job_create(driver, bs, speed, cb, opaque, errp);
    if (!s) {
        return;
    }

    s->replaces = g_strdup(replaces);
    s->on_source_error = on_source_error;
    s->on_target_error = on_target_error;
    s->target = target;
    s->is_none_mode = is_none_mode;
    s->base = base;
    s->granularity = granularity;
    s->buf_size = MAX(buf_size, granularity);

    s->dirty_bitmap = bdrv_create_dirty_bitmap(bs, granularity, errp);
    if (!s->dirty_bitmap) {
        return;
    }
    bdrv_set_enable_write_cache(s->target, true);
    bdrv_set_on_error(s->target, on_target_error, on_target_error);
    bdrv_iostatus_enable(s->target);
    s->common.co = qemu_coroutine_create(mirror_run);
    trace_mirror_start(bs, s, s->common.co, opaque);
    qemu_coroutine_enter(s->common.co, s);
}
コード例 #16
0
ファイル: gluster.c プロジェクト: Annovae/qemu
static void qemu_gluster_complete_aio(void *opaque)
{
    GlusterAIOCB *acb = (GlusterAIOCB *)opaque;

    qemu_bh_delete(acb->bh);
    acb->bh = NULL;
    qemu_coroutine_enter(acb->coroutine, NULL);
}
コード例 #17
0
ファイル: iscsi.c プロジェクト: MollyZhang/esesc
static void iscsi_retry_timer_expired(void *opaque)
{
    struct IscsiTask *iTask = opaque;
    iTask->complete = 1;
    if (iTask->co) {
        qemu_coroutine_enter(iTask->co, NULL);
    }
}
コード例 #18
0
ファイル: test-coroutine.c プロジェクト: CRYP706URU/pyrebox
static void test_entered(void)
{
    Coroutine *coroutine;

    coroutine = qemu_coroutine_create(verify_entered_step_1, NULL);
    g_assert(!qemu_coroutine_entered(coroutine));
    qemu_coroutine_enter(coroutine);
}
コード例 #19
0
ファイル: ssh.c プロジェクト: Pating/qemu-colo
static void restart_coroutine(void *opaque)
{
    Coroutine *co = opaque;

    DPRINTF("co=%p", co);

    qemu_coroutine_enter(co, NULL);
}
コード例 #20
0
ファイル: channel.c プロジェクト: AmesianX/panda
static gboolean qio_channel_yield_enter(QIOChannel *ioc,
                                        GIOCondition condition,
                                        gpointer opaque)
{
    QIOChannelYieldData *data = opaque;
    qemu_coroutine_enter(data->co);
    return FALSE;
}
コード例 #21
0
ファイル: blockjob.c プロジェクト: Aakriti/qemu
void block_job_resume(BlockJob *job)
{
    job->paused = false;
    block_job_iostatus_reset(job);
    if (job->co && !job->busy) {
        qemu_coroutine_enter(job->co, NULL);
    }
}
コード例 #22
0
ファイル: test-coroutine.c プロジェクト: hwc56/qemu-2.3.94
static void test_in_coroutine(void)
{
    Coroutine *coroutine;

    g_assert(!qemu_in_coroutine());

    coroutine = qemu_coroutine_create(verify_in_coroutine);
    qemu_coroutine_enter(coroutine, NULL);
}
コード例 #23
0
ファイル: migration.c プロジェクト: JehandadKhan/dpdk-ovs
void process_incoming_migration(QEMUFile *f)
{
    Coroutine *co = qemu_coroutine_create(process_incoming_migration_co);
    int fd = qemu_get_fd(f);

    assert(fd != -1);
    socket_set_nonblock(fd);
    qemu_coroutine_enter(co, f);
}
コード例 #24
0
ファイル: qemu-coroutine-lock.c プロジェクト: PennPanda/qemu
/**
 * qemu_co_queue_run_restart:
 *
 * Enter each coroutine that was previously marked for restart by
 * qemu_co_queue_next() or qemu_co_queue_restart_all().  This function is
 * invoked by the core coroutine code when the current coroutine yields or
 * terminates.
 */
void qemu_co_queue_run_restart(Coroutine *co)
{
    Coroutine *next;

    trace_qemu_co_queue_run_restart(co);
    while ((next = QSIMPLEQ_FIRST(&co->co_queue_wakeup))) {
        QSIMPLEQ_REMOVE_HEAD(&co->co_queue_wakeup, co_queue_next);
        qemu_coroutine_enter(next);
    }
}
コード例 #25
0
ファイル: test-coroutine.c プロジェクト: CRYP706URU/pyrebox
static void test_no_dangling_access(void)
{
    Coroutine *c1;
    Coroutine *c2;
    Coroutine tmp;

    c2 = qemu_coroutine_create(c2_fn, NULL);
    c1 = qemu_coroutine_create(c1_fn, c2);

    qemu_coroutine_enter(c1);

    /* c1 shouldn't be used any more now; make sure we segfault if it is */
    tmp = *c1;
    memset(c1, 0xff, sizeof(Coroutine));
    qemu_coroutine_enter(c2);

    /* Must restore the coroutine now to avoid corrupted pool */
    *c1 = tmp;
}
コード例 #26
0
ファイル: nbd-client.c プロジェクト: 32bitmicro/riscv-qemu
static void nbd_recv_coroutines_enter_all(NbdClientSession *s)
{
    int i;

    for (i = 0; i < MAX_NBD_REQUESTS; i++) {
        if (s->recv_coroutine[i]) {
            qemu_coroutine_enter(s->recv_coroutine[i], NULL);
        }
    }
}
コード例 #27
0
ファイル: virtio-9p-coth.c プロジェクト: AdrianHuang/qemu
static void v9fs_thread_routine(gpointer data, gpointer user_data)
{
    Coroutine *co = data;

    qemu_coroutine_enter(co, NULL);

    g_async_queue_push(v9fs_pool.completed, co);

    event_notifier_set(&v9fs_pool.e);
}
コード例 #28
0
ファイル: virtio-9p-coth.c プロジェクト: AdrianHuang/qemu
static void v9fs_qemu_process_req_done(EventNotifier *e)
{
    Coroutine *co;

    event_notifier_test_and_clear(e);

    while ((co = g_async_queue_try_pop(v9fs_pool.completed)) != NULL) {
        qemu_coroutine_enter(co, NULL);
    }
}
コード例 #29
0
ファイル: nbd.c プロジェクト: AsherBond/qemu-kvm-mq
static void nbd_reply_ready(void *opaque)
{
    BDRVNBDState *s = opaque;
    uint64_t i;
    int ret;

    if (s->reply.handle == 0) {
        /* No reply already in flight.  Fetch a header.  It is possible
         * that another thread has done the same thing in parallel, so
         * the socket is not readable anymore.
         */
        ret = nbd_receive_reply(s->sock, &s->reply);
        if (ret == -EAGAIN) {
            return;
        }
        if (ret < 0) {
            s->reply.handle = 0;
            goto fail;
        }
    }

    /* There's no need for a mutex on the receive side, because the
     * handler acts as a synchronization point and ensures that only
     * one coroutine is called until the reply finishes.  */
    i = HANDLE_TO_INDEX(s, s->reply.handle);
    if (i >= MAX_NBD_REQUESTS) {
        goto fail;
    }

    if (s->recv_coroutine[i]) {
        qemu_coroutine_enter(s->recv_coroutine[i], NULL);
        return;
    }

fail:
    for (i = 0; i < MAX_NBD_REQUESTS; i++) {
        if (s->recv_coroutine[i]) {
            qemu_coroutine_enter(s->recv_coroutine[i], NULL);
        }
    }
}
コード例 #30
0
ファイル: colo.c プロジェクト: mmuman/qemu
static void secondary_vm_do_failover(void)
{
    int old_state;
    MigrationIncomingState *mis = migration_incoming_get_current();

    /* Can not do failover during the process of VM's loading VMstate, Or
     * it will break the secondary VM.
     */
    if (vmstate_loading) {
        old_state = failover_set_state(FAILOVER_STATUS_ACTIVE,
                        FAILOVER_STATUS_RELAUNCH);
        if (old_state != FAILOVER_STATUS_ACTIVE) {
            error_report("Unknown error while do failover for secondary VM,"
                         "old_state: %s", FailoverStatus_lookup[old_state]);
        }
        return;
    }

    migrate_set_state(&mis->state, MIGRATION_STATUS_COLO,
                      MIGRATION_STATUS_COMPLETED);

    if (!autostart) {
        error_report("\"-S\" qemu option will be ignored in secondary side");
        /* recover runstate to normal migration finish state */
        autostart = true;
    }
    /*
     * Make sure COLO incoming thread not block in recv or send,
     * If mis->from_src_file and mis->to_src_file use the same fd,
     * The second shutdown() will return -1, we ignore this value,
     * It is harmless.
     */
    if (mis->from_src_file) {
        qemu_file_shutdown(mis->from_src_file);
    }
    if (mis->to_src_file) {
        qemu_file_shutdown(mis->to_src_file);
    }

    old_state = failover_set_state(FAILOVER_STATUS_ACTIVE,
                                   FAILOVER_STATUS_COMPLETED);
    if (old_state != FAILOVER_STATUS_ACTIVE) {
        error_report("Incorrect state (%s) while doing failover for "
                     "secondary VM", FailoverStatus_lookup[old_state]);
        return;
    }
    /* Notify COLO incoming thread that failover work is finished */
    qemu_sem_post(&mis->colo_incoming_sem);
    /* For Secondary VM, jump to incoming co */
    if (mis->migration_incoming_co) {
        qemu_coroutine_enter(mis->migration_incoming_co);
    }
}