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.