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remove dds_rhc_fini abomination

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It was called strangely early in the deleting of the reader, even before
the DDSI reader was no longer being accessed by other threads.  The
immediate and obvious problem is that it resets the pointer to the
upper-layer entity even though this can still be dereferenced in
invoking a listener, resulting in a crash.

Secondly it blocks until there are no listener calls any more (and the
resetting of that pointer will prevent any further listener
invocations), but a similar piece of logic is already in generic entity
code that resets the mask and then waits for all listener invocations to
complete.  Having both is a problem.

Signed-off-by: Erik Boasson <eb@ilities.com>
This commit is contained in:
Erik Boasson 2019-04-16 17:09:08 +02:00 • committed by eboasson
parent d6edfada81
commit 0202039f61
6 changed files with 13 additions and 48 deletions
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1
src/core/ddsi/include/dds/ddsi/ddsi_rhc_plugin.h
View file

@ -30,7 +30,6 @@ struct proxy_writer_info
struct ddsi_rhc_plugin
{
void (*rhc_free_fn) (struct rhc *rhc);
void (*rhc_fini_fn) (struct rhc *rhc);
bool (*rhc_store_fn)
(struct rhc * __restrict rhc, const struct proxy_writer_info * __restrict pwr_info,
struct ddsi_serdata * __restrict sample, struct ddsi_tkmap_instance * __restrict tk);

4
src/core/ddsi/src/q_entity.c
View file

@ -3386,10 +3386,6 @@ int delete_reader (const struct nn_guid *guid)
DDS_LOG(DDS_LC_DISCOVERY, "delete_reader_guid(guid %x:%x:%x:%x) - unknown guid\n", PGUID (*guid));
return Q_ERR_UNKNOWN_ENTITY;
}
if (rd->rhc)
{
(ddsi_plugin.rhc_plugin.rhc_fini_fn) (rd->rhc);
}
DDS_LOG(DDS_LC_DISCOVERY, "delete_reader_guid(guid %x:%x:%x:%x) ...\n", PGUID (*guid));
ddsi_plugin.builtintopic_write (&rd->e, now(), false);
ephash_remove_reader_guid (rd);