From 80dddb675276ec1cb28525e481c0c6bedb886145 Mon Sep 17 00:00:00 2001
From: Even Rouault <even.rouault@spatialys.com>
Date: Fri, 23 Jul 2021 09:16:54 +0200
Subject: Merge pull request #2787 from rouault/vgrid_perf_improvements

GeoTIFF grid reading: perf improvements (fixes #2785)
---
 include/proj/internal/lru_cache.hpp | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'include')

diff --git a/include/proj/internal/lru_cache.hpp b/include/proj/internal/lru_cache.hpp
index b7aff6b9..b2e997b3 100644
--- a/include/proj/internal/lru_cache.hpp
+++ b/include/proj/internal/lru_cache.hpp
@@ -160,6 +160,21 @@ class Cache {
     keys_.splice(keys_.begin(), keys_, iter->second);
     return iter->second->value;
   }
+
+  /**
+   *	The const reference returned here is only
+   *    guaranteed to be valid till the next insert/delete
+   */
+  const Value* getPtr(const Key& k) {
+    Guard g(lock_);
+    const auto iter = cache_.find(k);
+    if (iter == cache_.end()) {
+      return nullptr;
+    }
+    keys_.splice(keys_.begin(), keys_, iter->second);
+    return &(iter->second->value);
+  }
+
   /**
    * returns a copy of the stored object (if found)
    */
-- 
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