MONGOC_GRIDFS_FILE_READV(3)

NAME
mongoc_gridfs_file_readv - mongoc_gridfs_file_readv()

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: Unused.

DESCRIPTION

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

The timeout_msec parameter is unused.

RETURNS

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

AUTHOR
MongoDB, Inc

COPYRIGHT
2017-present, MongoDB, Inc