C++ (Cpp) scif_poll Examples

Example #1

File: btl_scif_add_procs.c Project: IanYXXL/A1

static void *mca_btl_scif_connect_accept (void *arg)
{
    struct scif_pollepd pollepd = {.epd = mca_btl_scif_module.scif_fd, .events = SCIF_POLLIN, .revents = 0};
    int rc;

    BTL_VERBOSE(("btl/scif: listening for new connections"));

    /* listen for connections */
    while (1) {
        pollepd.revents = 0;

        rc = scif_poll (&pollepd, 1, -1);
        if (1 == rc) {
            if (SCIF_POLLIN != pollepd.revents) {
                break;
            }

            rc = mca_btl_scif_ep_connect_start_passive ();
            if (OMPI_SUCCESS != rc) {
                BTL_VERBOSE(("btl/scif: error accepting scif connection"));
                continue;
            }
        } else {
            break;
        }
    }

    BTL_VERBOSE(("btl/scif: stopped listening for new connections"));

    return NULL;
}

int mca_btl_scif_del_procs (struct mca_btl_base_module_t *btl,
                            size_t nprocs, struct ompi_proc_t **procs,
                            struct mca_btl_base_endpoint_t **peers) {
    /* do nothing for now */
    return OMPI_SUCCESS;
}

static int scif_dereg_mem (void *reg_data, mca_mpool_base_registration_t *reg)
{
    mca_btl_scif_reg_t *scif_reg = (mca_btl_scif_reg_t *)reg;
    size_t size = (size_t)((uintptr_t) reg->bound - (uintptr_t) reg->base);
    int i;

    /* register the fragment with all connected endpoints */
    for (i = 0 ; i < (int) mca_btl_scif_module.endpoint_count ; ++i) {
        if ((off_t)-1 != scif_reg->registrations[i] &&
            MCA_BTL_SCIF_EP_STATE_CONNECTED == mca_btl_scif_module.endpoints[i].state) {
            (void) scif_unregister(mca_btl_scif_module.endpoints[i].scif_epd,
                                   scif_reg->registrations[i], size);
        }
    }

    free (scif_reg->registrations);

    return OMPI_SUCCESS;
}

Example #2

File: btl_scif_add_procs.c Project: 00datman/ompi

static void *mca_btl_scif_connect_accept (void *arg)
{
    struct scif_pollepd pollepd = {.epd = mca_btl_scif_module.scif_fd, .events = SCIF_POLLIN, .revents = 0};
    int rc;

    BTL_VERBOSE(("btl/scif: listening for new connections"));

    /* listen for connections */
    while (1) {
        pollepd.revents = 0;

        rc = scif_poll (&pollepd, 1, -1);
        if (1 == rc) {
            if (SCIF_POLLIN != pollepd.revents) {
                break;
            }
            if (mca_btl_scif_module.exiting) {
                /* accept the connection so scif_connect() does not timeout */
                struct scif_portID peer;
                scif_epd_t newepd;
                scif_accept(mca_btl_scif_module.scif_fd, &peer, &newepd, SCIF_ACCEPT_SYNC);
                scif_close(newepd);
                break;
            }

            rc = mca_btl_scif_ep_connect_start_passive ();
            if (OPAL_SUCCESS != rc) {
                BTL_VERBOSE(("btl/scif: error accepting scif connection"));
                continue;
            }
        } else {
            break;
        }
    }

    BTL_VERBOSE(("btl/scif: stopped listening for new connections"));

    return NULL;
}

int mca_btl_scif_del_procs (struct mca_btl_base_module_t *btl,
                            size_t nprocs, struct opal_proc_t **procs,
                            struct mca_btl_base_endpoint_t **peers) {
    /* do nothing for now */
    return OPAL_SUCCESS;
}

static int scif_dereg_mem (void *reg_data, mca_rcache_base_registration_t *reg)
{
    mca_btl_scif_reg_t *scif_reg = (mca_btl_scif_reg_t *)reg;
    size_t size = (size_t)((uintptr_t) reg->bound - (uintptr_t) reg->base);
    int i;

    /* register the fragment with all connected endpoints */
    for (i = 0 ; i < (int) mca_btl_scif_module.endpoint_count ; ++i) {
        if ((off_t)-1 != scif_reg->handles[i].btl_handle.scif_offset &&
            MCA_BTL_SCIF_EP_STATE_CONNECTED == mca_btl_scif_module.endpoints[i].state) {
            (void) scif_unregister(mca_btl_scif_module.endpoints[i].scif_epd,
                                   scif_reg->handles[i].btl_handle.scif_offset, size);
        }
    }

    free (scif_reg->handles);

    return OPAL_SUCCESS;
}