Provided by: libmongoc-doc_1.26.0-1.1ubuntu2_all 

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
1.26.0 Mar 31, 2024 MONGOC_GRIDFS_FILE_READV(3)