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Diffstat (limited to 'src/lib/istream-tee.h')
| -rw-r--r-- | src/lib/istream-tee.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/lib/istream-tee.h b/src/lib/istream-tee.h new file mode 100644 index 0000000..82c0c93 --- /dev/null +++ b/src/lib/istream-tee.h @@ -0,0 +1,17 @@ +#ifndef ISTREAM_TEE_H +#define ISTREAM_TEE_H + +/* Tee can be used to create multiple child input streams which can access + a single non-blocking input stream in a way that data isn't removed from + memory until all child streams have consumed the input. + + If the stream's buffer gets full because some child isn't consuming the + data, other streams get returned 0 by i_stream_read(). */ +struct tee_istream *tee_i_stream_create(struct istream *input); +/* Returns TRUE if last read() operation returned 0, because it was waiting + for another tee stream to read more of its data. */ +bool tee_i_stream_child_is_waiting(struct istream *input); + +struct istream *tee_i_stream_create_child(struct tee_istream *tee); + +#endif |