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Support XPub socket send last value caching to last subscription pipe with ZMQ_XPUB_MANUAL_LAST_VALUE. (#3511)

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* Add ZMQ_XPUB_MANUAL_LAST_VALUE

* Surpport xpub send last value caching to one pipe with ZMQ_XPUB_MANUAL_LAST_VALUE

* Add test_xpubub_manual_last_value

* Add relicense and doc
This commit is contained in:
imkcy9
2019-05-18 05:12:32 +08:00
committed by Luca Boccassi
parent 6b51f03377
commit 2f98f7034b
8 changed files with 584 additions and 0 deletions
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30
src/xpub.cpp
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@@ -44,6 +44,9 @@ zmq::xpub_t::xpub_t (class ctx_t *parent_, uint32_t tid_, int sid_) :
_more (false),
_lossy (true),
_manual (false),
#ifdef ZMQ_BUILD_DRAFT_API
_send_last_pipe (false),
#endif
_pending_pipes (),
_welcome_msg ()
{
@@ -190,6 +193,9 @@ int zmq::xpub_t::xsetsockopt (int option_,
size_t optvallen_)
{
if (option_ == ZMQ_XPUB_VERBOSE || option_ == ZMQ_XPUB_VERBOSER
#ifdef ZMQ_BUILD_DRAFT_API
|| option_ == ZMQ_XPUB_MANUAL_LAST_VALUE
#endif
|| option_ == ZMQ_XPUB_NODROP || option_ == ZMQ_XPUB_MANUAL) {
if (optvallen_ != sizeof (int)
|| *static_cast<const int *> (optval_) < 0) {
@@ -202,6 +208,11 @@ int zmq::xpub_t::xsetsockopt (int option_,
} else if (option_ == ZMQ_XPUB_VERBOSER) {
_verbose_subs = (*static_cast<const int *> (optval_) != 0);
_verbose_unsubs = _verbose_subs;
#ifdef ZMQ_BUILD_DRAFT_API
} else if (option_ == ZMQ_XPUB_MANUAL_LAST_VALUE) {
_manual = (*static_cast<const int *> (optval_) != 0);
_send_last_pipe = _manual;
#endif
} else if (option_ == ZMQ_XPUB_NODROP)
_lossy = (*static_cast<const int *> (optval_) == 0);
else if (option_ == ZMQ_XPUB_MANUAL)
@@ -265,14 +276,33 @@ void zmq::xpub_t::mark_as_matching (pipe_t *pipe_, xpub_t *self_)
self_->_dist.match (pipe_);
}
#ifdef ZMQ_BUILD_DRAFT_API
void zmq::xpub_t::mark_last_pipe_as_matching (pipe_t *pipe_, xpub_t *self_)
{
if (self_->_last_pipe == pipe_)
self_->_dist.match (pipe_);
}
#endif
int zmq::xpub_t::xsend (msg_t *msg_)
{
bool msg_more = (msg_->flags () & msg_t::more) != 0;
// For the first part of multi-part message, find the matching pipes.
if (!_more) {
#ifdef ZMQ_BUILD_DRAFT_API
if (_manual && _last_pipe && _send_last_pipe) {
_subscriptions.match (static_cast<unsigned char *> (msg_->data ()),
msg_->size (), mark_last_pipe_as_matching,
this);
_last_pipe = NULL;
} else
_subscriptions.match (static_cast<unsigned char *> (msg_->data ()),
msg_->size (), mark_as_matching, this);
#else
_subscriptions.match (static_cast<unsigned char *> (msg_->data ()),
msg_->size (), mark_as_matching, this);
#endif
// If inverted matching is used, reverse the selection now
if (options.invert_matching) {
_dist.reverse_match ();