[master] 9cfe535 If we fail to allocate an object, attempt to create a shortlived object in Transient storage and if that also fails, 503.

[Poul-Henning Kamp]

commit 9cfe535f67ef42d7f5dc09b0e6721bfd77316331
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date:   Mon Apr 4 09:22:12 2011 +0000

    If we fail to allocate an object, attempt to create a shortlived
    object in Transient storage and if that also fails, 503.
    
    Fixes 879

diff --git a/bin/varnishd/cache_center.c b/bin/varnishd/cache_center.c
index 7c4cb32..ba418b6 100644
--- a/bin/varnishd/cache_center.c
+++ b/bin/varnishd/cache_center.c
@@ -689,7 +689,22 @@ cnt_fetchbody(struct sess *sp)
 
 	sp->obj = STV_NewObject(sp, sp->wrk->storage_hint, l,
 	    &sp->wrk->exp, nhttp);
-	/* XXX: -> 513 */
+	if (sp->obj == NULL) {
+		/*
+		 * Try to salvage the transaction by allocating a
+		 * shortlived object on Transient storage.
+		 */
+		sp->obj = STV_NewObject(sp, TRANSIENT_STORAGE, l,
+		    &sp->wrk->exp, nhttp);
+		sp->wrk->exp.ttl = params->shortlived;
+	}
+	if (sp->obj == NULL) {
+		HSH_Drop(sp);
+		sp->err_code = 503;
+		sp->step = STP_ERROR;
+		VDI_CloseFd(sp);
+		return (0);
+	}
 	CHECK_OBJ_NOTNULL(sp->obj, OBJECT_MAGIC);
 
 	sp->wrk->storage_hint = NULL;