From 59f70280dee90957a672810a3845af2dec8552e8 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Wed, 30 Nov 2022 11:49:56 +0200
Subject: Reserve targets, variables to avoid rehashing

---
 libbuild2/variable.hxx | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'libbuild2/variable.hxx')

diff --git a/libbuild2/variable.hxx b/libbuild2/variable.hxx
index 3b444e6..400aaf1 100644
--- a/libbuild2/variable.hxx
+++ b/libbuild2/variable.hxx
@@ -16,6 +16,7 @@
 
 #include <libbuild2/context.hxx>
 #include <libbuild2/target-type.hxx>
+#include <libbuild2/diagnostics.hxx>
 
 #include <libbuild2/export.hxx>
 
@@ -1470,7 +1471,21 @@ namespace build2
       auto r (map_.insert (map::value_type (&n, move (var))));
 
       if (r.second)
+      {
+#if 0
+        if (shared_ && outer_ == nullptr) // Global pool in context.
+        {
+          size_t n (map_.bucket_count ());
+          if (n > buckets_)
+          {
+            text << "variable_pool buckets: " << buckets_ << " -> " << n
+                 << " (" << map_.size () << ")";
+            buckets_ = n;
+          }
+        }
+#endif
         r.first->first.p = &r.first->second.name;
+      }
 
       return r;
     }
@@ -1482,6 +1497,10 @@ namespace build2
     variable_pool* outer_;
     const variable_patterns* patterns_;
     map map_;
+
+#if 0
+    size_t buckets_ = 0;
+#endif
   };
 
   // Variable patterns.
-- 
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