ahat: limit default number of results shown.
Previously, ahat had performance issues rendering large pages. This
change causes ahat to limit the number results shown in large pages by
default, requiring the user to explicitly request more information if
they care about it.
Bug: 25114227
Change-Id: Ief67396be254be4c84e6971f5b903a701206e17b
diff --git a/tools/ahat/src/AhatHandler.java b/tools/ahat/src/AhatHandler.java
index 2da02f8..d4b4d1b 100644
--- a/tools/ahat/src/AhatHandler.java
+++ b/tools/ahat/src/AhatHandler.java
@@ -16,51 +16,17 @@
package com.android.ahat;
-import com.sun.net.httpserver.HttpExchange;
-import com.sun.net.httpserver.HttpHandler;
import java.io.IOException;
-import java.io.PrintStream;
/**
* AhatHandler.
*
- * Common base class of all the ahat HttpHandlers.
+ * Interface for an ahat page handler.
*/
-abstract class AhatHandler implements HttpHandler {
+interface AhatHandler {
- protected AhatSnapshot mSnapshot;
-
- public AhatHandler(AhatSnapshot snapshot) {
- mSnapshot = snapshot;
- }
-
- public abstract void handle(Doc doc, Query query) throws IOException;
-
- @Override
- public void handle(HttpExchange exchange) throws IOException {
- exchange.getResponseHeaders().add("Content-Type", "text/html;charset=utf-8");
- exchange.sendResponseHeaders(200, 0);
- PrintStream ps = new PrintStream(exchange.getResponseBody());
- try {
- HtmlDoc doc = new HtmlDoc(ps, DocString.text("ahat"), DocString.uri("style.css"));
- DocString menu = new DocString();
- menu.appendLink(DocString.uri("/"), DocString.text("overview"));
- menu.append(" - ");
- menu.appendLink(DocString.uri("roots"), DocString.text("roots"));
- menu.append(" - ");
- menu.appendLink(DocString.uri("sites"), DocString.text("allocations"));
- menu.append(" - ");
- menu.appendLink(DocString.uri("help"), DocString.text("help"));
- doc.menu(menu);
- handle(doc, new Query(exchange.getRequestURI()));
- doc.close();
- } catch (RuntimeException e) {
- // Print runtime exceptions to standard error for debugging purposes,
- // because otherwise they are swallowed and not reported.
- System.err.println("Exception when handling " + exchange.getRequestURI() + ": ");
- e.printStackTrace();
- throw e;
- }
- ps.close();
- }
+ /**
+ * Handle the given query, rendering the page to the given document.
+ */
+ void handle(Doc doc, Query query) throws IOException;
}