[8u] RFR for backport of JDK-8026331: hs_err improvement: Print if we have seen any OutOfMemoryErrors or StackOverflowErrors

[Shafi Ahmad]

Hi,
 
Please review the backport of bug: " JDK-8026331: hs_err improvement: Print if we have seen any OutOfMemoryErrors or StackOverflowErrors" to jdk8u-dev.

Please note that this is not a clean backport as I got below conflicts -

hotspot$ find ./ -name "*.rej" -exec cat {} \;
--- metaspace.cpp
+++ metaspace.cpp
@@ -3132,10 +3132,21 @@
   initialize_class_space(metaspace_rs);
 
   if (PrintCompressedOopsMode || (PrintMiscellaneous && Verbose)) {
-    gclog_or_tty->print_cr("Narrow klass base: " PTR_FORMAT ", Narrow klass shift: %d",
-                            p2i(Universe::narrow_klass_base()), Universe::narrow_klass_shift());
-    gclog_or_tty->print_cr("Compressed class space size: " SIZE_FORMAT " Address: " PTR_FORMAT " Req Addr: " PTR_FORMAT,
-                           compressed_class_space_size(), p2i(metaspace_rs.base()), p2i(requested_addr));
+    print_compressed_class_space(gclog_or_tty, requested_addr);
+  }
+}
+
+void Metaspace::print_compressed_class_space(outputStream* st, const char* requested_addr) {
+  st->print_cr("Narrow klass base: " PTR_FORMAT ", Narrow klass shift: %d",
+               p2i(Universe::narrow_klass_base()), Universe::narrow_klass_shift());
+  if (_class_space_list != NULL) {
+    address base = (address)_class_space_list->current_virtual_space()->bottom();
+    st->print("Compressed class space size: " SIZE_FORMAT " Address: " PTR_FORMAT,
+                 compressed_class_space_size(), p2i(base));
+    if (requested_addr != 0) {
+      st->print(" Req Addr: " PTR_FORMAT, p2i(requested_addr));
+    }
+    st->cr();
   }
 }
 
--- universe.cpp
+++ universe.cpp
@@ -781,27 +781,24 @@
   return JNI_OK;
 }
 
-void Universe::print_compressed_oops_mode() {
-  tty->cr();
-  tty->print("heap address: " PTR_FORMAT ", size: " SIZE_FORMAT " MB",
+void Universe::print_compressed_oops_mode(outputStream* st) {
+  st->print("heap address: " PTR_FORMAT ", size: " SIZE_FORMAT " MB",
               p2i(Universe::heap()->base()), Universe::heap()->reserved_region().byte_size()/M);
 
-  tty->print(", Compressed Oops mode: %s", narrow_oop_mode_to_string(narrow_oop_mode()));
+  st->print(", Compressed Oops mode: %s", narrow_oop_mode_to_string(narrow_oop_mode()));
 
   if (Universe::narrow_oop_base() != 0) {
-    tty->print(": " PTR_FORMAT, p2i(Universe::narrow_oop_base()));
+    st->print(": " PTR_FORMAT, p2i(Universe::narrow_oop_base()));
   }
 
   if (Universe::narrow_oop_shift() != 0) {
-    tty->print(", Oop shift amount: %d", Universe::narrow_oop_shift());
+    st->print(", Oop shift amount: %d", Universe::narrow_oop_shift());
   }
 
   if (!Universe::narrow_oop_use_implicit_null_checks()) {
-    tty->print(", no protected page in front of the heap");
+    st->print(", no protected page in front of the heap");
   }
-
-  tty->cr();
-  tty->cr();
+  st->cr();
 }

Webrev: http://cr.openjdk.java.net/~shshahma/8026331/webrev.00/
Jdk9 bug: https://bugs.openjdk.java.net/browse/JDK-8026331
Original patch pushed to jdk9: http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/cf5a0377f578

Test:  Run jprt -testset hotspot and jtreg - hotspot/test

Regards,
Shafi