mongoc_gridfs_file_readv3
Usage
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
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file: A mongoc_gridfs_file_t.
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iov: An array of mongoc_iovec_t.
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iovcnt: The number of elements iniov.
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min_bytes: The minimum number of bytes that must be read or an error will be synthesized.
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timeout_msec: Unused.
Overview
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.
Releases
5 releases since Debian 9 (Stretch); the text changed 4 times.