mongoc_gridfs_file_readv (3) Linux Manual 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

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.

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