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authorEelco Dolstra <e.dolstra@tudelft.nl>2006-03-10T16·14+0000
committerEelco Dolstra <e.dolstra@tudelft.nl>2006-03-10T16·14+0000
commit2b3b6c9b3428856b215545efd3abb9b8f42cf8b4 (patch)
treebc0f69b7c07ca451d06dc868326215ab8dffc18a
parent4ada6db1fc9cee9c0e51fb54af8770dd28243dff (diff)
* In theory, this should reduce the number of ATermMap
  re-allocations.

-rw-r--r--src/libexpr/eval.cc2
-rw-r--r--src/libexpr/nixexpr.cc5
2 files changed, 4 insertions, 3 deletions
diff --git a/src/libexpr/eval.cc b/src/libexpr/eval.cc
index eac13c3fd980..fc51590b20cc 100644
--- a/src/libexpr/eval.cc
+++ b/src/libexpr/eval.cc
@@ -26,7 +26,7 @@ void EvalState::addPrimOp(const string & name,
 /* Substitute an argument set into the body of a function. */
 static Expr substArgs(Expr body, ATermList formals, Expr arg)
 {
-    ATermMap subs;
+    ATermMap subs(ATgetLength(formals) * 2);
     Expr undefined = makeUndefined();
 
     /* Get the formal arguments. */
diff --git a/src/libexpr/nixexpr.cc b/src/libexpr/nixexpr.cc
index 6fb72687d160..aee57acb116e 100644
--- a/src/libexpr/nixexpr.cc
+++ b/src/libexpr/nixexpr.cc
@@ -50,9 +50,10 @@ void ATermMap::copy(const ATermMap & map)
 {
     ATermList keys = map.keys();
 
-    /* !!! adjust allocation for load pct */
+    /* !!! We adjust for the maximum load pct by allocating twice as
+       much.  Probably a bit too much. */
     maxLoadPct = map.maxLoadPct;
-    table = ATtableCreate(ATgetLength(keys), maxLoadPct);
+    table = ATtableCreate(ATgetLength(keys) * 2, maxLoadPct);
     if (!table) throw Error("cannot create ATerm table");
 
     add(map, keys);