From db736622a2aa5d9280c2e8e920502e30b2430c45 Mon Sep 17 00:00:00 2001
From: Gerardo Ganis <Gerardo.Ganis@cern.ch>
Date: Wed, 31 May 2017 18:37:59 +0200
Subject: [PATCH] xrdsut: add pure getter in XrdSutCache

Does not create the entry if not existing.
Used by XrdCryptosslX509Crl.
---
 src/XrdSut/XrdSutCache.hh | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/src/XrdSut/XrdSutCache.hh b/src/XrdSut/XrdSutCache.hh
index 7237443148d..48643f60f12 100644
--- a/src/XrdSut/XrdSutCache.hh
+++ b/src/XrdSut/XrdSutCache.hh
@@ -51,6 +51,31 @@ public:
    XrdSutCache(int psize = 89, int size = 144, int load = 80) : table(psize, size, load) {}
    virtual ~XrdSutCache() {}
 
+   XrdSutCacheEntry *Get(const char *tag) {
+      // Get the entry with 'tag'.
+      // If found the entry is returned rd-locked.
+      // If rd-locking fails the status is set to kCE_inactive.
+      // Returns null if not found.
+
+      XrdSutCacheEntry *cent = 0;
+
+      // Exclusive access to the table
+      XrdSysMutexHelper raii(mtx);
+
+      // Look for an entry
+      if (!(cent = table.Find(tag))) {
+         // none found
+         return cent;
+      }
+
+      // We found an existing entry:
+      // lock until we get the ability to read (another thread may be valudating it)
+      if (cent->rwmtx.ReadLock()) {
+         // A problem occured: fail (set the entry invalid)
+         cent->status = kCE_inactive;
+      }
+      return cent;
+   }
 
    XrdSutCacheEntry *Get(const char *tag, bool &rdlock, XrdSutCacheGet_t condition = 0, void *arg = 0) {
       // Get or create the entry with 'tag'.