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change the way WHC state is passed round in the transmit path to allow tighter assertions and silencing of warnings from clang's static analyzer

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Signed-off-by: Erik Boasson <eb@ilities.com>
This commit is contained in:
Erik Boasson 2019-01-02 12:11:59 +01:00
parent ed06ab8f4b
commit 23972aa8f7
1 changed files with 13 additions and 5 deletions
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18
src/core/ddsi/src/q_transmit.c
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@ -233,6 +233,7 @@ static int writer_hbcontrol_ack_required_generic (const struct writer *wr, const
{
struct hbcontrol const * const hbc = &wr->hbcontrol;
const int64_t hb_intv_ack = config.const_hb_intv_sched;
assert(wr->heartbeat_xevent != NULL && whcst != NULL);
if (piggyback)
{
@ -707,6 +708,7 @@ static void transmit_sample_lgmsg_unlocked (struct nn_xpack *xp, struct writer *
const char *frags_to_skip = getenv ("SKIPFRAGS");
#endif
assert(xp);
assert((wr->heartbeat_xevent != NULL) == (whcst != NULL));
for (i = 0; i < nfrags; i++)
{
@ -744,6 +746,7 @@ static void transmit_sample_lgmsg_unlocked (struct nn_xpack *xp, struct writer *
{
struct nn_xmsg *msg = NULL;
int hbansreq;
assert (whcst != NULL);
os_mutexLock (&wr->e.lock);
msg = writer_hbcontrol_piggyback (wr, whcst, serdata->twrite, nn_xpack_packetid (xp), &hbansreq);
os_mutexUnlock (&wr->e.lock);
@ -762,6 +765,7 @@ static void transmit_sample_unlocks_wr (struct nn_xpack *xp, struct writer *wr,
struct nn_xmsg *fmsg;
uint32_t sz;
assert(xp);
assert((wr->heartbeat_xevent != NULL) == (whcst != NULL));
sz = ddsi_serdata_size (serdata);
if (sz > config.fragment_size || !isnew || plist != NULL || prd != NULL)
@ -1116,10 +1120,6 @@ static int write_sample_eot (struct nn_xpack *xp, struct writer *wr, struct nn_p
}
else
{
struct whc_state whcst;
if (wr->heartbeat_xevent)
whc_get_state(wr->whc, &whcst);
/* Note the subtlety of enqueueing with the lock held but
transmitting without holding the lock. Still working on
cleaning that up. */
@ -1130,6 +1130,7 @@ static int write_sample_eot (struct nn_xpack *xp, struct writer *wr, struct nn_p
* plist's are only used for coherent sets, which is assumed to be rare,
* which in turn means that an extra copy doesn't hurt too badly ... */
nn_plist_t plist_stk, *plist_copy;
struct whc_state whcst, *whcstptr;
if (plist == NULL)
plist_copy = NULL;
else
@ -1137,7 +1138,14 @@ static int write_sample_eot (struct nn_xpack *xp, struct writer *wr, struct nn_p
plist_copy = &plist_stk;
nn_plist_copy (plist_copy, plist);
}
transmit_sample_unlocks_wr (xp, wr, &whcst, seq, plist_copy, serdata, NULL, 1);
if (wr->heartbeat_xevent == NULL)
whcstptr = NULL;
else
{
whc_get_state(wr->whc, &whcst);
whcstptr = &whcst;
}
transmit_sample_unlocks_wr (xp, wr, whcstptr, seq, plist_copy, serdata, NULL, 1);
if (plist_copy)
nn_plist_fini (plist_copy);
}