undf: assign UNDF numbers, stamp patches; 886 total

defects/pcsx2-0002/test/GSCaptureCodecDedupTest.java

@@ -0,0 +1,80 @@
+import java.util.*;
+
+/**
+ * Unit test for PCSX2 pcsx2-0002: GSCapture::GetCodecListForContainer
+ * uses std::find_if on vector to deduplicate codec names during enumeration,
+ * giving O(N^2) where N = number of codecs iterated.
+ *
+ * Fix: track seen codec names in an unordered_set for O(1) dedup.
+ *
+ * Defect file: pcsx2/GS/GSCapture.cpp  line 1501
+ */
+public class GSCaptureCodecDedupTest {
+
+    // --- Defective: linear scan on list for dedup ---
+    static List<String> getCodecListDefective(List<String> codecs) {
+        List<String> ret = new ArrayList<>();
+        for (String name : codecs) {
+            boolean found = false;
+            for (String existing : ret) {
+                if (existing.equals(name)) {
+                    found = true;
+                    break;
+                }
+            }
+            if (!found) {
+                ret.add(name);
+            }
+        }
+        return ret;
+    }
+
+    // --- Fixed: hash set dedup ---
+    static List<String> getCodecListFixed(List<String> codecs) {
+        List<String> ret = new ArrayList<>();
+        Set<String> seen = new HashSet<>();
+        for (String name : codecs) {
+            if (seen.add(name)) {
+                ret.add(name);
+            }
+        }
+        return ret;
+    }
+
+    public static void main(String[] args) {
+        int N = 500;
+
+        // Build codec list with ~50% duplicates
+        List<String> codecs = new ArrayList<>();
+        for (int i = 0; i < N; i++) {
+            codecs.add("codec_" + (i % (N / 2)));
+        }
+
+        // Correctness
+        List<String> resDef = getCodecListDefective(codecs);
+        List<String> resFix = getCodecListFixed(codecs);
+        assert resDef.equals(resFix) : "Mismatch";
+
+        // Warmup
+        for (int i = 0; i < 500; i++) {
+            getCodecListDefective(codecs);
+            getCodecListFixed(codecs);
+        }
+
+        int ITER = 5000;
+        long t0 = System.nanoTime();
+        for (int i = 0; i < ITER; i++) getCodecListDefective(codecs);
+        long defNs = System.nanoTime() - t0;
+
+        t0 = System.nanoTime();
+        for (int i = 0; i < ITER; i++) getCodecListFixed(codecs);
+        long fixNs = System.nanoTime() - t0;
+
+        double ratio = (double) defNs / fixNs;
+        System.out.printf("GSCapture codec dedup  N=%d  defect=%.1fms  fixed=%.1fms  ratio=%.1fx%n",
+                N, defNs / 1e6, fixNs / 1e6, ratio);
+
+        assert ratio > 2.0 : "Expected >2x speedup, got " + ratio;
+        System.out.println("PASS");
+    }
+}