[master] 26886ef Add some minimal debugging for fetch/deliver processors for a start

[Nils Goroll]

commit 26886ef5c50e6fff0e77cde04ff4671d0d4c54f3
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Mon Oct 30 12:58:26 2017 +0100

    Add some minimal debugging for fetch/deliver processors for a start

diff --git a/bin/varnishd/cache/cache_deliver_proc.c b/bin/varnishd/cache/cache_deliver_proc.c
index 3a5d6ba..2221c89 100644
--- a/bin/varnishd/cache/cache_deliver_proc.c
+++ b/bin/varnishd/cache/cache_deliver_proc.c
@@ -85,6 +85,9 @@ VDP_push(struct req *req, const struct vdp *vdp, void *priv, int bottom)
 	AN(vdp->name);
 	AN(vdp->func);
 
+	if (DO_DEBUG(DBG_PROCESSORS))
+		VSLb(req->vsl, SLT_Debug, "VDP_push(%s)", vdp->name);
+
 	vdpe = WS_Alloc(req->ws, sizeof *vdpe);
 	if (vdpe == NULL)
 		return;
diff --git a/bin/varnishd/cache/cache_fetch_proc.c b/bin/varnishd/cache/cache_fetch_proc.c
index 7d9bf5c..84b3abb 100644
--- a/bin/varnishd/cache/cache_fetch_proc.c
+++ b/bin/varnishd/cache/cache_fetch_proc.c
@@ -141,6 +141,9 @@ VFP_Open(struct vfp_ctx *vc)
 	VTAILQ_FOREACH_REVERSE(vfe, &vc->vfp, vfp_entry_s, list) {
 		if (vfe->vfp->init == NULL)
 			continue;
+		if (DO_DEBUG(DBG_PROCESSORS))
+			VSLb(vc->wrk->vsl, SLT_Debug, "VFP_Open(%s)",
+			     vfe->vfp->name);
 		vfe->closed = vfe->vfp->init(vc, vfe);
 		if (vfe->closed != VFP_OK && vfe->closed != VFP_NULL) {
 			(void)VFP_Error(vc, "Fetch filter %s failed to open",
diff --git a/include/tbl/debug_bits.h b/include/tbl/debug_bits.h
index 50e4839..3579a5d 100644
--- a/include/tbl/debug_bits.h
+++ b/include/tbl/debug_bits.h
@@ -48,6 +48,7 @@ DEBUG_BIT(DROP_POOLS,		drop_pools,	"Drop thread pools (testing)")
 DEBUG_BIT(SLOW_ACCEPTOR,	slow_acceptor,	"Slow down Acceptor")
 DEBUG_BIT(H2_NOCHECK,		h2_nocheck,	"Disable various H2 checks")
 DEBUG_BIT(VMOD_SO_KEEP,		vmod_so_keep,	"Keep copied VMOD libraries")
+DEBUG_BIT(PROCESSORS,		processors,	"Fetch/Deliver processors")
 #undef DEBUG_BIT
 
 /*lint -restore */