Report runtime information to DDMS

Reports runtime's ABI and internal flags to be displayed by DDMS.

Bug: 14888999
Bug: 14888124

(cherry picked from commit e901dbdee242182e4c768edebebc5bc9cbf67563)

Change-Id: I248c2558f4a89ebc9bc6b7a4a54db6091d138b33

1 files changed, 20 insertions, 2 deletions

diff --git a/core/java/android/ddm/DdmHandleHello.java b/core/java/android/ddm/DdmHandleHello.java
index 220b40d..2dce425 100644
--- a/core/java/android/ddm/DdmHandleHello.java
+++ b/core/java/android/ddm/DdmHandleHello.java
@@ -22,6 +22,7 @@ import org.apache.harmony.dalvik.ddmc.DdmServer;
 import android.util.Log;
 import android.os.Debug;
 import android.os.UserHandle;
+import dalvik.system.VMRuntime;
 
 import java.nio.ByteBuffer;
 
@@ -126,8 +127,21 @@ public class DdmHandleHello extends ChunkHandler {
         //    appName = "unknown";
         String appName = DdmHandleAppName.getAppName();
 
-        ByteBuffer out = ByteBuffer.allocate(20
-                            + vmIdent.length()*2 + appName.length()*2);
+        VMRuntime vmRuntime = VMRuntime.getRuntime();
+        String instructionSetDescription =
+            vmRuntime.is64Bit() ? "64-bit" : "32-bit";
+        String vmInstructionSet = vmRuntime.vmInstructionSet();
+        if (vmInstructionSet != null && vmInstructionSet.length() > 0) {
+          instructionSetDescription += " (" + vmInstructionSet + ")";
+        }
+        String vmFlags = "CheckJNI="
+            + (vmRuntime.isCheckJniEnabled() ? "true" : "false");
+
+        ByteBuffer out = ByteBuffer.allocate(28
+                            + vmIdent.length() * 2
+                            + appName.length() * 2
+                            + instructionSetDescription.length() * 2
+                            + vmFlags.length() * 2);
         out.order(ChunkHandler.CHUNK_ORDER);
         out.putInt(DdmServer.CLIENT_PROTOCOL_VERSION);
         out.putInt(android.os.Process.myPid());
@@ -136,6 +150,10 @@ public class DdmHandleHello extends ChunkHandler {
         putString(out, vmIdent);
         putString(out, appName);
         out.putInt(UserHandle.myUserId());
+        out.putInt(instructionSetDescription.length());
+        putString(out, instructionSetDescription);
+        out.putInt(vmFlags.length());
+        putString(out, vmFlags);
 
         Chunk reply = new Chunk(CHUNK_HELO, out);