NAME

       mongoc_gridfs_file_readv()   -   This  function  performs  a  scattered  read  from  file,
       potentially blocking to read from the MongoDB server.

SYNOPSIS

       ssize_t
       mongoc_gridfs_file_readv (mongoc_gridfs_file_t *file,
                                 mongoc_iovec_t       *iov,
                                 size_t                iovcnt,
                                 size_t                min_bytes,
                                 uint32_t              timeout_msec);

PARAMETERS

       file   A mongoc_gridfs_file_t \&.

       iov    An array of mongoc_iovec_t \&.

       iovcnt The number of elements in iov \&.

       min_bytes
              The minimum number of bytes that must be read or an error will be synthesized.

       timeout_msec
              A uint32_t with the timeout in milliseconds.

DESCRIPTION

       This function performs a scattered read from file , potentially blocking to read from  the
       MongoDB server.

       Timeout should be the number of milliseconds to allow blocking, or 0 to disallow blocking.

RETURNS

       Returns  the  number  of  bytes  read,  or  ‐1 on failure. Use mongoc_gridfs_file_error to
       retrieve error details.

COLOPHON

       This   page   is   part   of   MongoDB   C   Driver.    Please   report   any   bugs    at
       https://jira.mongodb.org/browse/CDRIVER.