# HG changeset patch
# User Tom Rodriguez <tom.rodriguez@oracle.com>
# Date 1422301025 28800
# Node ID 7186feb0d9714aa74adec3657decdc0b91c6ce3c
# Parent  4ac00633d83c9cf409dcc6b0423c0a1c0618b280
Add Java and JVM arguments to log file when -G:LogFile= is used

diff -r 4ac00633d83c -r 7186feb0d971 graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/PrintStreamOption.java
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/PrintStreamOption.java	Mon Jan 26 09:29:47 2015 -0800
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/PrintStreamOption.java	Mon Jan 26 11:37:05 2015 -0800
@@ -81,6 +81,13 @@
                         try {
                             final boolean enableAutoflush = true;
                             ps = new PrintStream(new FileOutputStream(getFilename()), enableAutoflush);
+                            /* Add the JVM and Java arguments to the log file to help identity it. */
+                            String inputArguments = String.join(" ", ManagementFactory.getRuntimeMXBean().getInputArguments());
+                            ps.println("VM Arguments: " + inputArguments);
+                            String cmd = System.getProperty("sun.java.command");
+                            if (cmd != null) {
+                                ps.println("sun.java.command=" + cmd);
+                            }
                         } catch (FileNotFoundException e) {
                             throw new RuntimeException("couldn't open file: " + getValue(), e);
                         }