Changeset 7b0e8b7 for tests/collections/string-gc.cfa

Timestamp:

Oct 18, 2021, 4:31:04 PM (3 years ago)

Author:

Michael Brooks <mlbrooks@…>

Branches:

ADT, ast-experimental, enum, master, pthread-emulation, qualifiedEnum

Children:

6f7aff3

Parents:

804bf677

Message:

String heap growth implemented

File:

• tests/collections/string-gc.cfa (modified) (1 diff)

tests/collections/string-gc.cfa

@@ -120 +120 @@
 }
 
+void fillNoCompact() {
+    // show that allocating in a heap filled with mostly live strings (no collectable garbage) causes heap growth
+
+    sout | "======================== fillNoCompact";
+
+    size_t lastTimeBytesAvail = bytesRemaining();
+    assert( lastTimeBytesAvail >= 200 ); // starting this test with nontrivial room
+
+    // mostly fill the pad
+    string_res a = "aaa";  // will have to be moved
+    string_res z = "zzz";
+    for (i; 5) {
+        while ( bytesRemaining() > 10 ) {
+            z += ".";
+        }
+        sout | "about to expand, a = " | a;
+        while ( bytesRemaining() <= 10 ) {
+            z += ".";
+        }
+        sout | "expanded, a = " | a;
+
+        // each growth gives more usable space than the last
+        assert( bytesRemaining() > lastTimeBytesAvail );
+        lastTimeBytesAvail = bytesRemaining();
+    }
+}
+
 int main() {
     basicFillCompact();
     fillCompact_withSharedEdits();
+    fillNoCompact();
 }