Update java code for RISC-V (src)

The changes are to modify the java code in the
src directory to avoid the timeout issue in the
native compilation on RISC-V.

Issue: ibmruntimes#218

Signed-off-by: Cheng Jin <[email protected]>

src/jdk.compiler/share/classes/com/sun/tools/sjavac/client/SjavacClient.java

@@ -22,6 +22,11 @@
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
+/*
+ * ===========================================================================
+ * (c) Copyright IBM Corp. 2019, 2019 All Rights Reserved
+ * ===========================================================================
+ */
 
 package com.sun.tools.sjavac.client;
 
@@ -84,6 +89,8 @@ public class SjavacClient implements Sjavac {
 
     // Store the server conf settings here.
     private final String settings;
+
+    private boolean isRiscv = System.getProperty("os.arch").toLowerCase().contains("riscv");
 
     public SjavacClient(Options options) {
         String tmpServerConf = options.getServerConf();
@@ -183,10 +190,15 @@ private Socket tryConnect() throws IOException, InterruptedException {
             try {
                 return makeConnectionAttempt();
             } catch (IOException ex) {
-                Log.error("Connection attempt failed: " + ex.getMessage());
-                if (attempt >= MAX_CONNECT_ATTEMPTS) {
-                    Log.error("Giving up");
-                    throw new IOException("Could not connect to server", ex);
+                /* Keep trying to connect as the native compilation with a non-JIT cross build
+                 * on Linux/RISCV is extremely slow.
+                 */
+                if (!isRiscv) {
+                   Log.error("Connection attempt failed: " + ex.getMessage());
+                   if (attempt >= MAX_CONNECT_ATTEMPTS) {
+                       Log.error("Giving up");
+                       throw new IOException("Could not connect to server", ex);
+                   }
                 }
             }
             Thread.sleep(WAIT_BETWEEN_CONNECT_ATTEMPTS);

src/jdk.compiler/share/classes/com/sun/tools/sjavac/server/PortFile.java

@@ -22,6 +22,11 @@
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
+/*
+ * ===========================================================================
+ * (c) Copyright IBM Corp. 2019, 2019 All Rights Reserved
+ * ===========================================================================
+ */
 
 package com.sun.tools.sjavac.server;
 
@@ -76,6 +81,7 @@ public class PortFile {
     private long serverCookie;
     private int myServerPort;
     private long myServerCookie;
+    private boolean isRiscv = System.getProperty("os.arch").toLowerCase().contains("riscv");
 
     /**
      * Create a new portfile.
@@ -247,7 +253,11 @@ public void waitForValidValues() throws IOException, InterruptedException {
                 Log.debug("Valid port file values found after " + (System.currentTimeMillis() - startTime) + " ms");
                 return;
             }
-            if (System.currentTimeMillis() > timeout) {
+
+            /* Keep waiting for port file values as the native compilation with a non-JIT cross build
+             * on Linux/RISCV is extremely slow.
+             */
+            if (!isRiscv && (System.currentTimeMillis() > timeout)) {
                 break;
             }
             Thread.sleep(MS_BETWEEN_ATTEMPTS);