mongoc_gridfs_file_readv man page

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
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.

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

Info

2016‐11‐07 MongoDB C Driver