Adding upstream version 1:2.3.19.1+dfsg1.upstream/1%2.3.19.1+dfsg1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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