DOKK / manpages / debian 10 / libmongoc-doc / mongoc_stream_read.3.en
MONGOC_STREAM_READ(3) MongoDB C Driver MONGOC_STREAM_READ(3)

mongoc_stream_read - mongoc_stream_read()

ssize_t
mongoc_stream_read (mongoc_stream_t *stream,


                    void *buf,


                    size_t count,


                    size_t min_bytes,


                    int32_t timeout_msec);


  • stream: A mongoc_stream_t.
  • buf: The buffer to read into.
  • count: The number of bytes to read.
  • min_bytes: The minimum number of bytes to read, or else indicate failure.
  • timeout_msec: The number of milliseconds to wait before failure, a timeout of 0 will not block. If negative, use the default timeout.

The mongoc_stream_read() function shall perform a read from a mongoc_stream_t. It's modeled on the API and semantics of read(), though the parameters map only loosely.

The mongoc_stream_read function returns the number of bytes read on success. It returns >= 0 and < min_bytes when end-of-file is encountered and -1 on failure. errno is set upon failure.

mongoc_stream_readv()

mongoc_stream_write()

mongoc_stream_writev()

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February 23, 2019 1.14.0