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https://issues.apache.org/jira/browse/DISPATCH-767?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16078261#comment-16078261
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ASF GitHub Bot commented on DISPATCH-767:
-----------------------------------------
Github user alanconway commented on a diff in the pull request:
https://github.com/apache/qpid-dispatch/pull/172#discussion_r126158278
--- Diff: src/message_private.h ---
@@ -94,10 +94,19 @@ typedef struct {
unsigned char *parse_cursor;
qd_message_depth_t parse_depth;
qd_parsed_field_t *parsed_message_annotations;
+
+ bool discard; // Should this
message be discarded?
+ bool receive_complete; // true if the
message has been completely received, false otherwise
+ unsigned int fanout; // The number of
receivers for this message. This number does not include in-process subscribers.
} qd_message_content_t;
typedef struct {
DEQ_LINKS(qd_message_t); // Deque linkage that overlays the
qd_message_t
+ qd_field_location_t cursor; // A pointer to the current
location of the outgoing byte stream.
+ qd_message_depth_t message_depth;
--- End diff --
Add a comment to explain these here - not obvious (to me) what they mean.
> Message Cut-Through/Streaming for efficient handling of large messages
> ----------------------------------------------------------------------
>
> Key: DISPATCH-767
> URL: https://issues.apache.org/jira/browse/DISPATCH-767
> Project: Qpid Dispatch
> Issue Type: Improvement
> Components: Router Node
> Reporter: Ted Ross
> Assignee: Ganesh Murthy
> Fix For: 1.0.0
>
>
> When large, multi-frame messages are sent through the router, there is no
> need to wait for the entire message to arrive before starting to send it
> onward.
> This feature causes the router to route the first frame and allow subsequent
> frames in a delivery to be streamed out in pipeline fashion. Ideally, the
> memory usage in the router should only involve pending frames. This would
> allow the router to handle arbitrary numbers of concurrent arbitrarily large
> messages.
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