C++ (Cpp) OPAL_SHMEM_DS_INVALIDATEの例

コード例 #1

ファイル: shmem_mmap_module.c プロジェクト: ORNL/ompi

/* ////////////////////////////////////////////////////////////////////////// */
static int
segment_unlink(opal_shmem_ds_t *ds_buf)
{
    OPAL_OUTPUT_VERBOSE(
        (70, opal_shmem_base_framework.framework_output,
         "%s: %s: unlinking"
         "(id: %d, size: %lu, name: %s)\n",
         mca_shmem_mmap_component.super.base_version.mca_type_name,
         mca_shmem_mmap_component.super.base_version.mca_component_name,
         ds_buf->seg_id, (unsigned long)ds_buf->seg_size, ds_buf->seg_name)
    );

    if (-1 == unlink(ds_buf->seg_name)) {
        int err = errno;
        char hn[MAXHOSTNAMELEN];
        gethostname(hn, MAXHOSTNAMELEN - 1);
        hn[MAXHOSTNAMELEN - 1] = '\0';
        opal_show_help("help-opal-shmem-mmap.txt", "sys call fail", 1, hn,
                       "unlink(2)", ds_buf->seg_name, strerror(err), err);
        return OPAL_ERROR;
    }

    /* don't completely reset the opal_shmem_ds_t.  in particular, only reset
     * the id and flip the invalid bit.  size and name values will remain valid
     * across unlinks. other information stored in flags will remain untouched.
     */
    ds_buf->seg_id = OPAL_SHMEM_DS_ID_INVALID;
    /* note: this is only chaning the valid bit to 0. */
    OPAL_SHMEM_DS_INVALIDATE(ds_buf);
    return OPAL_SUCCESS;
}

コード例 #2

/* ////////////////////////////////////////////////////////////////////////// */
static int
segment_unlink(opal_shmem_ds_t *ds_buf)
{
    OPAL_OUTPUT_VERBOSE(
        (70, opal_shmem_base_output,
         "%s: %s: unlinking "
         "(id: %d, size: %"PRIsize_t", name: %s)\n",
         mca_shmem_windows_component.super.base_version.mca_type_name,
         mca_shmem_windows_component.super.base_version.mca_component_name,
         ds_buf->seg_id, ds_buf->seg_size, ds_buf->seg_name)
    );

    /* don't completely reset the opal_shmem_ds_t.  in particular, only reset
     * the id and flip the invalid bit.  size and name values will remain valid
     * across unlinks. other information stored in flags will remain untouched.
     */
    ds_buf->seg_id = OPAL_SHMEM_DS_ID_INVALID;
    /* note: this is only chaning the valid bit to 0. */
    OPAL_SHMEM_DS_INVALIDATE(ds_buf);
    return OPAL_SUCCESS;
}