# HG changeset patch
# User coleenp
# Date 1231529947 18000
# Node ID fc7ab6287598874e544d40e03c3acb3869f796f8
# Parent  a0401dc51d0b4fe9a92e76810936a41d2387ef9e# Parent  1a767c61ad016baf553fac7082613f3b2b7d881f
Merge

diff -r 1a767c61ad01 -r fc7ab6287598 src/cpu/sparc/vm/jni_sparc.h
--- a/src/cpu/sparc/vm/jni_sparc.h	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/cpu/sparc/vm/jni_sparc.h	Fri Jan 09 14:39:07 2009 -0500
@@ -28,5 +28,11 @@
 #define JNICALL
 
 typedef int jint;
-typedef long long jlong;
+
+#ifdef _LP64
+  typedef long jlong;
+#else
+  typedef long long jlong;
+#endif
+
 typedef signed char jbyte;
diff -r 1a767c61ad01 -r fc7ab6287598 src/cpu/x86/vm/assembler_x86.cpp
--- a/src/cpu/x86/vm/assembler_x86.cpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/cpu/x86/vm/assembler_x86.cpp	Fri Jan 09 14:39:07 2009 -0500
@@ -5212,15 +5212,15 @@
 void MacroAssembler::reset_last_Java_frame(bool clear_fp,
                                            bool clear_pc) {
   // we must set sp to zero to clear frame
-  movptr(Address(r15_thread, JavaThread::last_Java_sp_offset()), (int32_t)NULL_WORD);
+  movptr(Address(r15_thread, JavaThread::last_Java_sp_offset()), NULL_WORD);
   // must clear fp, so that compiled frames are not confused; it is
   // possible that we need it only for debugging
   if (clear_fp) {
-    movptr(Address(r15_thread, JavaThread::last_Java_fp_offset()), (int32_t)NULL_WORD);
+    movptr(Address(r15_thread, JavaThread::last_Java_fp_offset()), NULL_WORD);
   }
 
   if (clear_pc) {
-    movptr(Address(r15_thread, JavaThread::last_Java_pc_offset()), (int32_t)NULL_WORD);
+    movptr(Address(r15_thread, JavaThread::last_Java_pc_offset()), NULL_WORD);
   }
 }
 
@@ -5670,7 +5670,7 @@
   // get oop result if there is one and reset the value in the thread
   if (oop_result->is_valid()) {
     movptr(oop_result, Address(java_thread, JavaThread::vm_result_offset()));
-    movptr(Address(java_thread, JavaThread::vm_result_offset()), (int32_t)NULL_WORD);
+    movptr(Address(java_thread, JavaThread::vm_result_offset()), NULL_WORD);
     verify_oop(oop_result, "broken oop in call_VM_base");
   }
 }
@@ -6426,13 +6426,13 @@
     get_thread(java_thread);
   }
   // we must set sp to zero to clear frame
-  movptr(Address(java_thread, JavaThread::last_Java_sp_offset()), (int32_t)NULL_WORD);
+  movptr(Address(java_thread, JavaThread::last_Java_sp_offset()), NULL_WORD);
   if (clear_fp) {
-    movptr(Address(java_thread, JavaThread::last_Java_fp_offset()), (int32_t)NULL_WORD);
+    movptr(Address(java_thread, JavaThread::last_Java_fp_offset()), NULL_WORD);
   }
 
   if (clear_pc)
-    movptr(Address(java_thread, JavaThread::last_Java_pc_offset()), (int32_t)NULL_WORD);
+    movptr(Address(java_thread, JavaThread::last_Java_pc_offset()), NULL_WORD);
 
 }
 
diff -r 1a767c61ad01 -r fc7ab6287598 src/cpu/x86/vm/c1_LIRAssembler_x86.cpp
--- a/src/cpu/x86/vm/c1_LIRAssembler_x86.cpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/cpu/x86/vm/c1_LIRAssembler_x86.cpp	Fri Jan 09 14:39:07 2009 -0500
@@ -779,7 +779,7 @@
     case T_OBJECT:  // fall through
     case T_ARRAY:
       if (c->as_jobject() == NULL) {
-        __ movptr(as_Address(addr), (int32_t)NULL_WORD);
+        __ movptr(as_Address(addr), NULL_WORD);
       } else {
         if (is_literal_address(addr)) {
           ShouldNotReachHere();
diff -r 1a767c61ad01 -r fc7ab6287598 src/cpu/x86/vm/c1_Runtime1_x86.cpp
--- a/src/cpu/x86/vm/c1_Runtime1_x86.cpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/cpu/x86/vm/c1_Runtime1_x86.cpp	Fri Jan 09 14:39:07 2009 -0500
@@ -78,10 +78,10 @@
     movptr(rax, Address(thread, Thread::pending_exception_offset()));
     // make sure that the vm_results are cleared
     if (oop_result1->is_valid()) {
-      movptr(Address(thread, JavaThread::vm_result_offset()), (int32_t)NULL_WORD);
+      movptr(Address(thread, JavaThread::vm_result_offset()), NULL_WORD);
     }
     if (oop_result2->is_valid()) {
-      movptr(Address(thread, JavaThread::vm_result_2_offset()), (int32_t)NULL_WORD);
+      movptr(Address(thread, JavaThread::vm_result_2_offset()), NULL_WORD);
     }
     if (frame_size() == no_frame_size) {
       leave();
@@ -96,12 +96,12 @@
   // get oop results if there are any and reset the values in the thread
   if (oop_result1->is_valid()) {
     movptr(oop_result1, Address(thread, JavaThread::vm_result_offset()));
-    movptr(Address(thread, JavaThread::vm_result_offset()), (int32_t)NULL_WORD);
+    movptr(Address(thread, JavaThread::vm_result_offset()), NULL_WORD);
     verify_oop(oop_result1);
   }
   if (oop_result2->is_valid()) {
     movptr(oop_result2, Address(thread, JavaThread::vm_result_2_offset()));
-    movptr(Address(thread, JavaThread::vm_result_2_offset()), (int32_t)NULL_WORD);
+    movptr(Address(thread, JavaThread::vm_result_2_offset()), NULL_WORD);
     verify_oop(oop_result2);
   }
   return call_offset;
@@ -728,8 +728,8 @@
 
   // clear exception fields in JavaThread because they are no longer needed
   // (fields must be cleared because they are processed by GC otherwise)
-  __ movptr(Address(thread, JavaThread::exception_oop_offset()), (int32_t)NULL_WORD);
-  __ movptr(Address(thread, JavaThread::exception_pc_offset()), (int32_t)NULL_WORD);
+  __ movptr(Address(thread, JavaThread::exception_oop_offset()), NULL_WORD);
+  __ movptr(Address(thread, JavaThread::exception_pc_offset()), NULL_WORD);
 
   // pop the stub frame off
   __ leave();
@@ -878,7 +878,7 @@
 
     // load and clear pending exception
     __ movptr(rax, Address(thread, Thread::pending_exception_offset()));
-    __ movptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD);
+    __ movptr(Address(thread, Thread::pending_exception_offset()), NULL_WORD);
 
     // check that there is really a valid exception
     __ verify_not_null_oop(rax);
@@ -971,14 +971,14 @@
         // load pending exception oop into rax,
         __ movptr(exception_oop, Address(thread, Thread::pending_exception_offset()));
         // clear pending exception
-        __ movptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD);
+        __ movptr(Address(thread, Thread::pending_exception_offset()), NULL_WORD);
 
         // load issuing PC (the return address for this stub) into rdx
         __ movptr(exception_pc, Address(rbp, 1*BytesPerWord));
 
         // make sure that the vm_results are cleared (may be unnecessary)
-        __ movptr(Address(thread, JavaThread::vm_result_offset()), (int32_t)NULL_WORD);
-        __ movptr(Address(thread, JavaThread::vm_result_2_offset()), (int32_t)NULL_WORD);
+        __ movptr(Address(thread, JavaThread::vm_result_offset()), NULL_WORD);
+        __ movptr(Address(thread, JavaThread::vm_result_2_offset()), NULL_WORD);
 
         // verify that that there is really a valid exception in rax,
         __ verify_not_null_oop(exception_oop);
diff -r 1a767c61ad01 -r fc7ab6287598 src/cpu/x86/vm/interp_masm_x86_32.cpp
--- a/src/cpu/x86/vm/interp_masm_x86_32.cpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/cpu/x86/vm/interp_masm_x86_32.cpp	Fri Jan 09 14:39:07 2009 -0500
@@ -133,7 +133,7 @@
                              + in_ByteSize(wordSize));
   switch (state) {
     case atos: movptr(rax, oop_addr);
-               movptr(oop_addr, (int32_t)NULL_WORD);
+               movptr(oop_addr, NULL_WORD);
                verify_oop(rax, state);                break;
     case ltos:
                movl(rdx, val_addr1);               // fall through
@@ -148,7 +148,7 @@
   }
   // Clean up tos value in the thread object
   movl(tos_addr,  (int32_t) ilgl);
-  movptr(val_addr,  (int32_t)NULL_WORD);
+  movptr(val_addr,  NULL_WORD);
   NOT_LP64(movl(val_addr1, (int32_t)NULL_WORD));
 }
 
@@ -944,7 +944,7 @@
     movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes ()));
 
     // Free entry
-    movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD);
+    movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), NULL_WORD);
 
     if (UseBiasedLocking) {
       biased_locking_exit(obj_reg, header_reg, done);
diff -r 1a767c61ad01 -r fc7ab6287598 src/cpu/x86/vm/interp_masm_x86_32.hpp
--- a/src/cpu/x86/vm/interp_masm_x86_32.hpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/cpu/x86/vm/interp_masm_x86_32.hpp	Fri Jan 09 14:39:07 2009 -0500
@@ -120,7 +120,7 @@
   void empty_expression_stack()                            {
        movptr(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize));
       // NULL last_sp until next java call
-      movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
+      movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
   }
 
   // Tagged stack helpers for swap and dup
diff -r 1a767c61ad01 -r fc7ab6287598 src/cpu/x86/vm/interpreterRT_x86_32.cpp
--- a/src/cpu/x86/vm/interpreterRT_x86_32.cpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/cpu/x86/vm/interpreterRT_x86_32.cpp	Fri Jan 09 14:39:07 2009 -0500
@@ -54,7 +54,7 @@
   __ cmpptr(Address(from(), Interpreter::local_offset_in_bytes(from_offset)), (int32_t)NULL_WORD); // do not use temp() to avoid AGI
   Label L;
   __ jcc(Assembler::notZero, L);
-  __ movptr(temp(), ((int32_t)NULL_WORD));
+  __ movptr(temp(), NULL_WORD);
   __ bind(L);
   __ movptr(Address(to(), to_offset * wordSize), temp());
 }
diff -r 1a767c61ad01 -r fc7ab6287598 src/cpu/x86/vm/jni_x86.h
--- a/src/cpu/x86/vm/jni_x86.h	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/cpu/x86/vm/jni_x86.h	Fri Jan 09 14:39:07 2009 -0500
@@ -32,7 +32,13 @@
   #define JNICALL
 
   typedef int jint;
+
+#ifdef _LP64
+  typedef long jlong;
+#else
   typedef long long jlong;
+#endif
+
 #else
   #define JNIEXPORT __declspec(dllexport)
   #define JNIIMPORT __declspec(dllimport)
diff -r 1a767c61ad01 -r fc7ab6287598 src/cpu/x86/vm/runtime_x86_32.cpp
--- a/src/cpu/x86/vm/runtime_x86_32.cpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/cpu/x86/vm/runtime_x86_32.cpp	Fri Jan 09 14:39:07 2009 -0500
@@ -129,11 +129,11 @@
   // Get the exception pc in case we are deoptimized
   __ movptr(rdx, Address(rcx, JavaThread::exception_pc_offset()));
 #ifdef ASSERT
-  __ movptr(Address(rcx, JavaThread::exception_handler_pc_offset()), (int32_t)NULL_WORD);
-  __ movptr(Address(rcx, JavaThread::exception_pc_offset()), (int32_t)NULL_WORD);
+  __ movptr(Address(rcx, JavaThread::exception_handler_pc_offset()), NULL_WORD);
+  __ movptr(Address(rcx, JavaThread::exception_pc_offset()), NULL_WORD);
 #endif
   // Clear the exception oop so GC no longer processes it as a root.
-  __ movptr(Address(rcx, JavaThread::exception_oop_offset()), (int32_t)NULL_WORD);
+  __ movptr(Address(rcx, JavaThread::exception_oop_offset()), NULL_WORD);
 
   __ pop(rcx);
 
diff -r 1a767c61ad01 -r fc7ab6287598 src/cpu/x86/vm/sharedRuntime_x86_32.cpp
--- a/src/cpu/x86/vm/sharedRuntime_x86_32.cpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/cpu/x86/vm/sharedRuntime_x86_32.cpp	Fri Jan 09 14:39:07 2009 -0500
@@ -1793,7 +1793,7 @@
   // reset handle block
   __ movptr(rcx, Address(thread, JavaThread::active_handles_offset()));
 
-  __ movptr(Address(rcx, JNIHandleBlock::top_offset_in_bytes()), (int32_t)NULL_WORD);
+  __ movptr(Address(rcx, JNIHandleBlock::top_offset_in_bytes()), NULL_WORD);
 
   // Any exception pending?
   __ cmpptr(Address(thread, in_bytes(Thread::pending_exception_offset())), (int32_t)NULL_WORD);
@@ -1865,7 +1865,7 @@
     // Save pending exception around call to VM (which contains an EXCEPTION_MARK)
 
     __ pushptr(Address(thread, in_bytes(Thread::pending_exception_offset())));
-    __ movptr(Address(thread, in_bytes(Thread::pending_exception_offset())), (int32_t)NULL_WORD);
+    __ movptr(Address(thread, in_bytes(Thread::pending_exception_offset())), NULL_WORD);
 
 
     // should be a peal
@@ -2431,7 +2431,7 @@
   __ get_thread(rdi);
   __ movptr(rdx, Address(rdi, JavaThread::exception_pc_offset()));
   __ movptr(Address(rbp, wordSize), rdx);
-  __ movptr(Address(rdi, JavaThread::exception_pc_offset()), (int32_t)NULL_WORD);
+  __ movptr(Address(rdi, JavaThread::exception_pc_offset()), NULL_WORD);
 
 #ifdef ASSERT
   // verify that there is really an exception oop in JavaThread
@@ -2489,8 +2489,8 @@
   __ jcc(Assembler::notEqual, noException);
   __ movptr(rax, Address(rcx, JavaThread::exception_oop_offset()));
   __ movptr(rdx, Address(rcx, JavaThread::exception_pc_offset()));
-  __ movptr(Address(rcx, JavaThread::exception_oop_offset()), (int32_t)NULL_WORD);
-  __ movptr(Address(rcx, JavaThread::exception_pc_offset()), (int32_t)NULL_WORD);
+  __ movptr(Address(rcx, JavaThread::exception_oop_offset()), NULL_WORD);
+  __ movptr(Address(rcx, JavaThread::exception_pc_offset()), NULL_WORD);
 
   __ verify_oop(rax);
 
@@ -2582,7 +2582,7 @@
           rbx); // Make it walkable
 #else /* CC_INTERP */
   // This value is corrected by layout_activation_impl
-  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD );
+  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
   __ movptr(Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize), rbx); // Make it walkable
 #endif /* CC_INTERP */
   __ movptr(sp_temp, rsp);              // pass to next frame
@@ -2802,7 +2802,7 @@
           rbx); // Make it walkable
 #else /* CC_INTERP */
   // This value is corrected by layout_activation_impl
-  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD );
+  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD );
   __ movptr(Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize), rbx); // Make it walkable
 #endif /* CC_INTERP */
   __ movptr(sp_temp, rsp);              // pass to next frame
@@ -3020,7 +3020,7 @@
   // exception pending => remove activation and forward to exception handler
 
   __ get_thread(thread);
-  __ movptr(Address(thread, JavaThread::vm_result_offset()), (int32_t)NULL_WORD);
+  __ movptr(Address(thread, JavaThread::vm_result_offset()), NULL_WORD);
   __ movptr(rax, Address(thread, Thread::pending_exception_offset()));
   __ jump(RuntimeAddress(StubRoutines::forward_exception_entry()));
 
diff -r 1a767c61ad01 -r fc7ab6287598 src/cpu/x86/vm/stubGenerator_x86_64.cpp
--- a/src/cpu/x86/vm/stubGenerator_x86_64.cpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/cpu/x86/vm/stubGenerator_x86_64.cpp	Fri Jan 09 14:39:07 2009 -0500
@@ -472,7 +472,7 @@
     // setup rax & rdx, remove return address & clear pending exception
     __ pop(rdx);
     __ movptr(rax, Address(r15_thread, Thread::pending_exception_offset()));
-    __ movptr(Address(r15_thread, Thread::pending_exception_offset()), (int)NULL_WORD);
+    __ movptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD);
 
 #ifdef ASSERT
     // make sure exception is set
@@ -954,9 +954,9 @@
     __ jcc(Assembler::zero, exit); // if obj is NULL it is OK
     // Check if the oop is in the right area of memory
     __ movptr(c_rarg2, rax);
-    __ movptr(c_rarg3, (int64_t) Universe::verify_oop_mask());
+    __ movptr(c_rarg3, (intptr_t) Universe::verify_oop_mask());
     __ andptr(c_rarg2, c_rarg3);
-    __ movptr(c_rarg3, (int64_t) Universe::verify_oop_bits());
+    __ movptr(c_rarg3, (intptr_t) Universe::verify_oop_bits());
     __ cmpptr(c_rarg2, c_rarg3);
     __ jcc(Assembler::notZero, error);
 
@@ -969,9 +969,9 @@
     __ jcc(Assembler::zero, error); // if klass is NULL it is broken
     // Check if the klass is in the right area of memory
     __ mov(c_rarg2, rax);
-    __ movptr(c_rarg3, (int64_t) Universe::verify_klass_mask());
+    __ movptr(c_rarg3, (intptr_t) Universe::verify_klass_mask());
     __ andptr(c_rarg2, c_rarg3);
-    __ movptr(c_rarg3, (int64_t) Universe::verify_klass_bits());
+    __ movptr(c_rarg3, (intptr_t) Universe::verify_klass_bits());
     __ cmpptr(c_rarg2, c_rarg3);
     __ jcc(Assembler::notZero, error);
 
@@ -980,9 +980,9 @@
     __ testptr(rax, rax);
     __ jcc(Assembler::zero, error); // if klass' klass is NULL it is broken
     // Check if the klass' klass is in the right area of memory
-    __ movptr(c_rarg3, (int64_t) Universe::verify_klass_mask());
+    __ movptr(c_rarg3, (intptr_t) Universe::verify_klass_mask());
     __ andptr(rax, c_rarg3);
-    __ movptr(c_rarg3, (int64_t) Universe::verify_klass_bits());
+    __ movptr(c_rarg3, (intptr_t) Universe::verify_klass_bits());
     __ cmpptr(rax, c_rarg3);
     __ jcc(Assembler::notZero, error);
 
diff -r 1a767c61ad01 -r fc7ab6287598 src/cpu/x86/vm/templateInterpreter_x86_32.cpp
--- a/src/cpu/x86/vm/templateInterpreter_x86_32.cpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/cpu/x86/vm/templateInterpreter_x86_32.cpp	Fri Jan 09 14:39:07 2009 -0500
@@ -110,7 +110,7 @@
     if (message != NULL) {
       __ lea(rbx, ExternalAddress((address)message));
     } else {
-      __ movptr(rbx, (int32_t)NULL_WORD);
+      __ movptr(rbx, NULL_WORD);
     }
     __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), rax, rbx);
   }
@@ -123,7 +123,7 @@
 address TemplateInterpreterGenerator::generate_continuation_for(TosState state) {
   address entry = __ pc();
   // NULL last_sp until next java call
-  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
+  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
   __ dispatch_next(state);
   return entry;
 }
@@ -176,7 +176,7 @@
   // Restore stack bottom in case i2c adjusted stack
   __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize));
   // and NULL it as marker that rsp is now tos until next java call
-  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
+  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
 
   __ restore_bcp();
   __ restore_locals();
@@ -211,7 +211,7 @@
 
   // The stack is not extended by deopt but we must NULL last_sp as this
   // entry is like a "return".
-  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
+  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
   __ restore_bcp();
   __ restore_locals();
   // handle exceptions
@@ -1028,7 +1028,7 @@
 
   // reset handle block
   __ movptr(t, Address(thread, JavaThread::active_handles_offset()));
-  __ movptr(Address(t, JNIHandleBlock::top_offset_in_bytes()), (int32_t)NULL_WORD);
+  __ movptr(Address(t, JNIHandleBlock::top_offset_in_bytes()), NULL_WORD);
 
   // If result was an oop then unbox and save it in the frame
   { Label L;
@@ -1488,7 +1488,7 @@
 
   // Restore sp to interpreter_frame_last_sp even though we are going
   // to empty the expression stack for the exception processing.
-  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
+  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
   // rax,: exception
   // rdx: return address/pc that threw exception
   __ restore_bcp();                              // rsi points to call/send
@@ -1608,7 +1608,7 @@
   __ reset_last_Java_frame(rcx, true, true);
   // Restore the last_sp and null it out
   __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize));
-  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
+  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
 
   __ restore_bcp();
   __ restore_locals();
@@ -1636,7 +1636,7 @@
   // restore exception
   __ get_thread(rcx);
   __ movptr(rax, Address(rcx, JavaThread::vm_result_offset()));
-  __ movptr(Address(rcx, JavaThread::vm_result_offset()), (int32_t)NULL_WORD);
+  __ movptr(Address(rcx, JavaThread::vm_result_offset()), NULL_WORD);
   __ verify_oop(rax);
 
   // Inbetween activations - previous activation type unknown yet
diff -r 1a767c61ad01 -r fc7ab6287598 src/cpu/x86/vm/templateTable_x86_32.cpp
--- a/src/cpu/x86/vm/templateTable_x86_32.cpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/cpu/x86/vm/templateTable_x86_32.cpp	Fri Jan 09 14:39:07 2009 -0500
@@ -137,7 +137,7 @@
         // Do the actual store
         // noreg means NULL
         if (val == noreg) {
-          __ movl(Address(rdx, 0), NULL_WORD);
+          __ movl(Address(rdx, 0), (int32_t)NULL_WORD);
           // No post barrier for NULL
         } else {
           __ movl(Address(rdx, 0), val);
diff -r 1a767c61ad01 -r fc7ab6287598 src/cpu/x86/vm/x86_32.ad
--- a/src/cpu/x86/vm/x86_32.ad	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/cpu/x86/vm/x86_32.ad	Fri Jan 09 14:39:07 2009 -0500
@@ -3371,7 +3371,7 @@
          masm.movptr(Address(boxReg, 0), 3) ;            // results in ST-before-CAS penalty
          masm.get_thread (scrReg) ; 
          masm.movptr(boxReg, tmpReg);                    // consider: LEA box, [tmp-2] 
-         masm.movptr(tmpReg, 0);                         // consider: xor vs mov
+         masm.movptr(tmpReg, NULL_WORD);                 // consider: xor vs mov
          if (os::is_MP()) { masm.lock(); } 
          masm.cmpxchgptr(scrReg, Address(boxReg, ObjectMonitor::owner_offset_in_bytes()-2)) ; 
       } else 
@@ -3387,7 +3387,7 @@
 
          if ((EmitSync & 64) == 0) {
            // Optimistic form: consider XORL tmpReg,tmpReg
-           masm.movptr(tmpReg, 0 ) ; 
+           masm.movptr(tmpReg, NULL_WORD) ; 
          } else { 
            // Can suffer RTS->RTO upgrades on shared or cold $ lines
            // Test-And-CAS instead of CAS
@@ -3587,7 +3587,7 @@
          masm.orptr(boxReg, Address (tmpReg, ObjectMonitor::EntryList_offset_in_bytes()-2)) ; 
          masm.orptr(boxReg, Address (tmpReg, ObjectMonitor::cxq_offset_in_bytes()-2)) ; 
          masm.jccb  (Assembler::notZero, DONE_LABEL) ; 
-         masm.movptr(Address (tmpReg, ObjectMonitor::owner_offset_in_bytes()-2), 0) ; 
+         masm.movptr(Address (tmpReg, ObjectMonitor::owner_offset_in_bytes()-2), NULL_WORD) ; 
          masm.jmpb  (DONE_LABEL) ; 
       } else { 
          masm.xorptr(boxReg, Address (tmpReg, ObjectMonitor::owner_offset_in_bytes()-2)) ;  
@@ -3596,7 +3596,7 @@
          masm.movptr(boxReg, Address (tmpReg, ObjectMonitor::EntryList_offset_in_bytes()-2)) ; 
          masm.orptr(boxReg, Address (tmpReg, ObjectMonitor::cxq_offset_in_bytes()-2)) ; 
          masm.jccb  (Assembler::notZero, CheckSucc) ; 
-         masm.movptr(Address (tmpReg, ObjectMonitor::owner_offset_in_bytes()-2), 0) ; 
+         masm.movptr(Address (tmpReg, ObjectMonitor::owner_offset_in_bytes()-2), NULL_WORD) ; 
          masm.jmpb  (DONE_LABEL) ; 
       }
 
@@ -3644,7 +3644,7 @@
          // We currently use (3), although it's likely that switching to (2)
          // is correct for the future.
             
-         masm.movptr(Address (tmpReg, ObjectMonitor::owner_offset_in_bytes()-2), 0) ; 
+         masm.movptr(Address (tmpReg, ObjectMonitor::owner_offset_in_bytes()-2), NULL_WORD) ; 
          if (os::is_MP()) { 
             if (VM_Version::supports_sse2() && 1 == FenceInstruction) { 
               masm.mfence();
diff -r 1a767c61ad01 -r fc7ab6287598 src/os/linux/vm/os_linux.cpp
--- a/src/os/linux/vm/os_linux.cpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/os/linux/vm/os_linux.cpp	Fri Jan 09 14:39:07 2009 -0500
@@ -1164,7 +1164,10 @@
 
         /*                                     1   1   1   1   1   1   1   1   1   1   2   2   2   2   2   2   2   2   2 */
         /*              3  4  5  6  7  8   9   0   1   2   3   4   5   6   7   8   9   0   1   2   3   4   5   6   7   8 */
-        i = sscanf(s, "%c %d %d %d %d %d %lu %lu %lu %lu %lu %lu %lu %ld %ld %ld %ld %ld %ld %lu %lu %ld %lu %lu %lu %lu",
+        i = sscanf(s, "%c %d %d %d %d %d %lu %lu %lu %lu %lu %lu %lu %ld %ld %ld %ld %ld %ld "
+                   UINTX_FORMAT UINTX_FORMAT UINTX_FORMAT
+                   " %lu "
+                   UINTX_FORMAT UINTX_FORMAT UINTX_FORMAT,
              &state,          /* 3  %c  */
              &ppid,           /* 4  %d  */
              &pgrp,           /* 5  %d  */
@@ -1184,13 +1187,13 @@
              &nice,           /* 19 %ld  */
              &junk,           /* 20 %ld  */
              &it_real,        /* 21 %ld  */
-             &start,          /* 22 %lu  */
-             &vsize,          /* 23 %lu  */
-             &rss,            /* 24 %ld  */
+             &start,          /* 22 UINTX_FORMAT  */
+             &vsize,          /* 23 UINTX_FORMAT  */
+             &rss,            /* 24 UINTX_FORMAT  */
              &rsslim,         /* 25 %lu  */
-             &scodes,         /* 26 %lu  */
-             &ecode,          /* 27 %lu  */
-             &stack_start);   /* 28 %lu  */
+             &scodes,         /* 26 UINTX_FORMAT  */
+             &ecode,          /* 27 UINTX_FORMAT  */
+             &stack_start);   /* 28 UINTX_FORMAT  */
       }
 
       if (i != 28 - 2) {
@@ -2028,7 +2031,8 @@
                 CAST_FROM_FN_PTR(address, os::jvm_path),
                 dli_fname, sizeof(dli_fname), NULL);
   assert(ret != 0, "cannot locate libjvm");
-  realpath(dli_fname, buf);
+  if (realpath(dli_fname, buf) == NULL)
+    return;
 
   if (strcmp(Arguments::sun_java_launcher(), "gamma") == 0) {
     // Support for the gamma launcher.  Typical value for buf is
@@ -2052,7 +2056,8 @@
         assert(strstr(p, "/libjvm") == p, "invalid library name");
         p = strstr(p, "_g") ? "_g" : "";
 
-        realpath(java_home_var, buf);
+        if (realpath(java_home_var, buf) == NULL)
+          return;
         sprintf(buf + strlen(buf), "/jre/lib/%s", cpu_arch);
         if (0 == access(buf, F_OK)) {
           // Use current module name "libjvm[_g].so" instead of
@@ -2063,7 +2068,8 @@
           sprintf(buf + strlen(buf), "/hotspot/libjvm%s.so", p);
         } else {
           // Go back to path of .so
-          realpath(dli_fname, buf);
+          if (realpath(dli_fname, buf) == NULL)
+            return;
         }
       }
     }
@@ -4188,11 +4194,11 @@
   // Skip blank chars
   do s++; while (isspace(*s));
 
-  count = sscanf(s,"%c %d %d %d %d %d %lu %lu %lu %lu %lu %lu %lu",
-                 &idummy, &idummy, &idummy, &idummy, &idummy, &idummy,
+  count = sscanf(s,"%*c %d %d %d %d %d %lu %lu %lu %lu %lu %lu %lu",
+                 &idummy, &idummy, &idummy, &idummy, &idummy,
                  &ldummy, &ldummy, &ldummy, &ldummy, &ldummy,
                  &user_time, &sys_time);
-  if ( count != 13 ) return -1;
+  if ( count != 12 ) return -1;
   if (user_sys_cpu_time) {
     return ((jlong)sys_time + (jlong)user_time) * (1000000000 / clock_tics_per_sec);
   } else {
diff -r 1a767c61ad01 -r fc7ab6287598 src/share/vm/classfile/javaClasses.cpp
--- a/src/share/vm/classfile/javaClasses.cpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/share/vm/classfile/javaClasses.cpp	Fri Jan 09 14:39:07 2009 -0500
@@ -441,6 +441,7 @@
 
 bool java_lang_Class::offsets_computed = false;
 int  java_lang_Class::classRedefinedCount_offset = -1;
+int  java_lang_Class::parallelCapable_offset = -1;
 
 void java_lang_Class::compute_offsets() {
   assert(!offsets_computed, "offsets should be initialized only once");
@@ -451,6 +452,23 @@
   // so don't go fatal.
   compute_optional_offset(classRedefinedCount_offset,
     k, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature());
+
+  // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
+  klassOop k1 = SystemDictionary::classloader_klass();
+  compute_optional_offset(parallelCapable_offset,
+    k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
+}
+
+// For class loader classes, parallelCapable defined
+// based on non-null field
+// Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
+bool java_lang_Class::parallelCapable(oop class_loader) {
+  if (!JDK_Version::is_gte_jdk17x_version()
+     || parallelCapable_offset == -1) {
+     // Default for backward compatibility is false
+     return false;
+  }
+  return (class_loader->obj_field(parallelCapable_offset) != NULL);
 }
 
 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
@@ -866,7 +884,7 @@
     }
     nmethod* nm = method->code();
     if (WizardMode && nm != NULL) {
-      sprintf(buf + (int)strlen(buf), "(nmethod %#x)", nm);
+      sprintf(buf + (int)strlen(buf), "(nmethod " PTR_FORMAT ")", (intptr_t)nm);
     }
   }
 
diff -r 1a767c61ad01 -r fc7ab6287598 src/share/vm/classfile/javaClasses.hpp
--- a/src/share/vm/classfile/javaClasses.hpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/share/vm/classfile/javaClasses.hpp	Fri Jan 09 14:39:07 2009 -0500
@@ -141,6 +141,7 @@
   static void compute_offsets();
   static bool offsets_computed;
   static int classRedefinedCount_offset;
+  static int parallelCapable_offset;
 
  public:
   // Instance creation
@@ -168,6 +169,8 @@
   // Support for classRedefinedCount field
   static int classRedefinedCount(oop the_class_mirror);
   static void set_classRedefinedCount(oop the_class_mirror, int value);
+  // Support for parallelCapable field
+  static bool parallelCapable(oop the_class_mirror);
   // Debugging
   friend class JavaClasses;
   friend class instanceKlass;   // verification code accesses offsets
diff -r 1a767c61ad01 -r fc7ab6287598 src/share/vm/classfile/systemDictionary.cpp
--- a/src/share/vm/classfile/systemDictionary.cpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/share/vm/classfile/systemDictionary.cpp	Fri Jan 09 14:39:07 2009 -0500
@@ -90,6 +90,14 @@
 #endif
 
 // ----------------------------------------------------------------------------
+// Parallel class loading check
+
+bool SystemDictionary::is_parallelCapable(Handle class_loader) {
+  if (UnsyncloadClass || class_loader.is_null()) return true;
+  if (AlwaysLockClassLoader) return false;
+  return java_lang_Class::parallelCapable(class_loader());
+}
+// ----------------------------------------------------------------------------
 // Resolving of classes
 
 // Forwards to resolve_or_null
@@ -196,7 +204,8 @@
 // super-class callers:
 //   ClassFileParser - for defineClass & jvmtiRedefineClasses
 //   load_shared_class - while loading a class from shared archive
-//   resolve_instance_class_or_fail:
+//   resolve_instance_class_or_null:
+//     via: handle_parallel_super_load
 //      when resolving a class that has an existing placeholder with
 //      a saved superclass [i.e. a defineClass is currently in progress]
 //      if another thread is trying to resolve the class, it must do
@@ -283,12 +292,9 @@
       if (probe && probe->check_seen_thread(THREAD, PlaceholderTable::LOAD_SUPER)) {
           throw_circularity_error = true;
       }
-
-      // add placeholder entry even if error - callers will remove on error
+    }
+    if (!throw_circularity_error) {
       PlaceholderEntry* newprobe = placeholders()->find_and_add(p_index, p_hash, child_name, class_loader, PlaceholderTable::LOAD_SUPER, class_name, THREAD);
-      if (throw_circularity_error) {
-         newprobe->remove_seen_thread(THREAD, PlaceholderTable::LOAD_SUPER);
-      }
     }
   }
   if (throw_circularity_error) {
@@ -325,7 +331,6 @@
   return superk_h();
 }
 
-
 void SystemDictionary::validate_protection_domain(instanceKlassHandle klass,
                                                   Handle class_loader,
                                                   Handle protection_domain,
@@ -421,7 +426,7 @@
   bool calledholdinglock
       = ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, lockObject);
   assert(calledholdinglock,"must hold lock for notify");
-  assert(!UnsyncloadClass, "unexpected double_lock_wait");
+  assert((!(lockObject() == _system_loader_lock_obj) && !is_parallelCapable(lockObject)), "unexpected double_lock_wait");
   ObjectSynchronizer::notifyall(lockObject, THREAD);
   intptr_t recursions =  ObjectSynchronizer::complete_exit(lockObject, THREAD);
   SystemDictionary_lock->wait();
@@ -439,7 +444,7 @@
 // even in non-circularity situations.
 // Note: only one thread can define the class, but multiple can resolve
 // Note: must call resolve_super_or_fail even if null super -
-// to force placeholder entry creation for this class
+// to force placeholder entry creation for this class for circularity detection
 // Caller must check for pending exception
 // Returns non-null klassOop if other thread has completed load
 // and we are done,
@@ -477,9 +482,9 @@
     SystemDictionary_lock->notify_all();
   }
 
-  // UnsyncloadClass does NOT wait for parallel superclass loads to complete
-  // Bootstrap classloader does wait for parallel superclass loads
- if (UnsyncloadClass) {
+  // parallelCapable class loaders do NOT wait for parallel superclass loads to complete
+  // Serial class loaders and bootstrap classloader do wait for superclass loads
+ if (!class_loader.is_null() && is_parallelCapable(class_loader)) {
     MutexLocker mu(SystemDictionary_lock, THREAD);
     // Check if classloading completed while we were loading superclass or waiting
     klassOop check = find_class(d_index, d_hash, name, class_loader);
@@ -566,10 +571,10 @@
   // This lock must be acquired here so the waiter will find
   // any successful result in the SystemDictionary and not attempt
   // the define
-  // Classloaders that support parallelism, e.g. bootstrap classloader,
+  // ParallelCapable Classloaders and the bootstrap classloader,
   // or all classloaders with UnsyncloadClass do not acquire lock here
   bool DoObjectLock = true;
-  if (UnsyncloadClass || (class_loader.is_null())) {
+  if (is_parallelCapable(class_loader)) {
     DoObjectLock = false;
   }
 
@@ -627,6 +632,9 @@
     // Five cases:
     // All cases need to prevent modifying bootclasssearchpath
     // in parallel with a classload of same classname
+    // Redefineclasses uses existence of the placeholder for the duration
+    // of the class load to prevent concurrent redefinition of not completely
+    // defined classes.
     // case 1. traditional classloaders that rely on the classloader object lock
     //   - no other need for LOAD_INSTANCE
     // case 2. traditional classloaders that break the classloader object lock
@@ -642,12 +650,13 @@
     //    This classloader supports parallelism at the classloader level,
     //    but only allows a single load of a class/classloader pair.
     //    No performance benefit and no deadlock issues.
-    // case 5. Future: parallel user level classloaders - without objectLocker
+    // case 5. parallelCapable user level classloaders - without objectLocker
+    //    Allow parallel classloading of a class/classloader pair
     symbolHandle nullsymbolHandle;
     bool throw_circularity_error = false;
     {
       MutexLocker mu(SystemDictionary_lock, THREAD);
-      if (!UnsyncloadClass) {
+      if (class_loader.is_null() || !is_parallelCapable(class_loader)) {
         PlaceholderEntry* oldprobe = placeholders()->get_entry(p_index, p_hash, name, class_loader);
         if (oldprobe) {
           // only need check_seen_thread once, not on each loop
@@ -681,25 +690,25 @@
         }
       }
       // All cases: add LOAD_INSTANCE
-      // case 3: UnsyncloadClass: allow competing threads to try
+      // case 3: UnsyncloadClass || case 5: parallelCapable: allow competing threads to try
       // LOAD_INSTANCE in parallel
       // add placeholder entry even if error - callers will remove on error
-      if (!class_has_been_loaded) {
+      if (!throw_circularity_error && !class_has_been_loaded) {
         PlaceholderEntry* newprobe = placeholders()->find_and_add(p_index, p_hash, name, class_loader, PlaceholderTable::LOAD_INSTANCE, nullsymbolHandle, THREAD);
-        if (throw_circularity_error) {
-          newprobe->remove_seen_thread(THREAD, PlaceholderTable::LOAD_INSTANCE);
-        }
         // For class loaders that do not acquire the classloader object lock,
         // if they did not catch another thread holding LOAD_INSTANCE,
         // need a check analogous to the acquire ObjectLocker/find_class
         // i.e. now that we hold the LOAD_INSTANCE token on loading this class/CL
         // one final check if the load has already completed
+        // class loaders holding the ObjectLock shouldn't find the class here
         klassOop check = find_class(d_index, d_hash, name, class_loader);
         if (check != NULL) {
         // Klass is already loaded, so just return it
           k = instanceKlassHandle(THREAD, check);
           class_has_been_loaded = true;
           newprobe->remove_seen_thread(THREAD, PlaceholderTable::LOAD_INSTANCE);
+          placeholders()->find_and_remove(p_index, p_hash, name, class_loader, THREAD);
+          SystemDictionary_lock->notify_all();
         }
       }
     }
@@ -714,18 +723,14 @@
       // Do actual loading
       k = load_instance_class(name, class_loader, THREAD);
 
-      // In custom class loaders, the usual findClass calls
-      // findLoadedClass, which directly searches  the SystemDictionary, then
-      // defineClass. If these are not atomic with respect to other threads,
-      // the findLoadedClass can fail, but the defineClass can get a
-      // LinkageError:: duplicate class definition.
+      // For UnsyncloadClass and AllowParallelDefineClass only:
       // If they got a linkageError, check if a parallel class load succeeded.
       // If it did, then for bytecode resolution the specification requires
       // that we return the same result we did for the other thread, i.e. the
       // successfully loaded instanceKlass
-      // Note: Class can not be unloaded as long as any classloader refs exist
       // Should not get here for classloaders that support parallelism
-      // with the new cleaner mechanism, e.g. bootstrap classloader
+      // with the new cleaner mechanism
+      // Bootstrap goes through here to allow for an extra guarantee check
       if (UnsyncloadClass || (class_loader.is_null())) {
         if (k.is_null() && HAS_PENDING_EXCEPTION
           && PENDING_EXCEPTION->is_a(SystemDictionary::linkageError_klass())) {
@@ -955,10 +960,10 @@
   instanceKlassHandle k = ClassFileParser(st).parseClassFile(class_name,
                                                              class_loader,
                                                              protection_domain,
-                                                             cp_patches,
                                                              parsed_name,
                                                              THREAD);
 
+
   // We don't redefine the class, so we just need to clean up whether there
   // was an error or not (don't want to modify any system dictionary
   // data structures).
@@ -1013,11 +1018,17 @@
                                                ClassFileStream* st,
                                                TRAPS) {
 
-  // Make sure we are synchronized on the class loader before we initiate
-  // loading.
+  // Classloaders that support parallelism, e.g. bootstrap classloader,
+  // or all classloaders with UnsyncloadClass do not acquire lock here
+  bool DoObjectLock = true;
+  if (is_parallelCapable(class_loader)) {
+    DoObjectLock = false;
+  }
+
+  // Make sure we are synchronized on the class loader before we proceed
   Handle lockObject = compute_loader_lock_object(class_loader, THREAD);
   check_loader_lock_contention(lockObject, THREAD);
-  ObjectLocker ol(lockObject, THREAD);
+  ObjectLocker ol(lockObject, THREAD, DoObjectLock);
 
   symbolHandle parsed_name;
 
@@ -1069,7 +1080,13 @@
            "external class name format used internally");
 
     // Add class just loaded
-    define_instance_class(k, THREAD);
+    // If a class loader supports parallel classloading handle parallel define requests
+    // find_or_define_instance_class may return a different instanceKlass
+    if (is_parallelCapable(class_loader)) {
+      k = find_or_define_instance_class(class_name, class_loader, k, THREAD);
+    } else {
+      define_instance_class(k, THREAD);
+    }
   }
 
   // If parsing the class file or define_instance_class failed, we
@@ -1299,7 +1316,7 @@
     }
 #endif // KERNEL
 
-    // find_or_define_instance_class may return a different k
+    // find_or_define_instance_class may return a different instanceKlass
     if (!k.is_null()) {
       k = find_or_define_instance_class(class_name, class_loader, k, CHECK_(nh));
     }
@@ -1316,14 +1333,24 @@
 
     KlassHandle spec_klass (THREAD, SystemDictionary::classloader_klass());
 
-    // UnsyncloadClass option means don't synchronize loadClass() calls.
-    // loadClassInternal() is synchronized and public loadClass(String) is not.
-    // This flag is for diagnostic purposes only. It is risky to call
+    // Call public unsynchronized loadClass(String) directly for all class loaders
+    // for parallelCapable class loaders. JDK >=7, loadClass(String, boolean) will
+    // acquire a class-name based lock rather than the class loader object lock.
+    // JDK < 7 already acquire the class loader lock in loadClass(String, boolean),
+    // so the call to loadClassInternal() was not required.
+    //
+    // UnsyncloadClass flag means both call loadClass(String) and do
+    // not acquire the class loader lock even for class loaders that are
+    // not parallelCapable. This was a risky transitional
+    // flag for diagnostic purposes only. It is risky to call
     // custom class loaders without synchronization.
     // WARNING If a custom class loader does NOT synchronizer findClass, or callers of
-    // findClass, this flag risks unexpected timing bugs in the field.
+    // findClass, the UnsyncloadClass flag risks unexpected timing bugs in the field.
     // Do NOT assume this will be supported in future releases.
-    if (!UnsyncloadClass && has_loadClassInternal()) {
+    //
+    // Added MustCallLoadClassInternal in case we discover in the field
+    // a customer that counts on this call
+    if (MustCallLoadClassInternal && has_loadClassInternal()) {
       JavaCalls::call_special(&result,
                               class_loader,
                               spec_klass,
@@ -1365,14 +1392,17 @@
 
   Handle class_loader_h(THREAD, k->class_loader());
 
-  // for bootstrap classloader don't acquire lock
-  if (!class_loader_h.is_null()) {
+ // for bootstrap and other parallel classloaders don't acquire lock,
+ // use placeholder token
+ // If a parallelCapable class loader calls define_instance_class instead of
+ // find_or_define_instance_class to get here, we have a timing
+ // hole with systemDictionary updates and check_constraints
+ if (!class_loader_h.is_null() && !is_parallelCapable(class_loader_h)) {
     assert(ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD,
          compute_loader_lock_object(class_loader_h, THREAD)),
          "define called without lock");
   }
 
-
   // Check class-loading constraints. Throw exception if violation is detected.
   // Grabs and releases SystemDictionary_lock
   // The check_constraints/find_class call and update_dictionary sequence
@@ -1427,59 +1457,63 @@
 
 // Support parallel classloading
 // Initial implementation for bootstrap classloader
-// For future:
 // For custom class loaders that support parallel classloading,
-// in case they do not synchronize around
-// FindLoadedClass/DefineClass calls, we check for parallel
+// With AllowParallelDefine flag==true, in case they do not synchronize around
+// FindLoadedClass/DefineClass, calls, we check for parallel
 // loading for them, wait if a defineClass is in progress
 // and return the initial requestor's results
+// With AllowParallelDefine flag==false, call through to define_instance_class
+// which will throw LinkageError: duplicate class definition.
 // For better performance, the class loaders should synchronize
-// findClass(), i.e. FindLoadedClass/DefineClass or they
+// findClass(), i.e. FindLoadedClass/DefineClassIfAbsent or they
 // potentially waste time reading and parsing the bytestream.
 // Note: VM callers should ensure consistency of k/class_name,class_loader
 instanceKlassHandle SystemDictionary::find_or_define_instance_class(symbolHandle class_name, Handle class_loader, instanceKlassHandle k, TRAPS) {
 
   instanceKlassHandle nh = instanceKlassHandle(); // null Handle
+  symbolHandle name_h(THREAD, k->name()); // passed in class_name may be null
 
-  unsigned int d_hash = dictionary()->compute_hash(class_name, class_loader);
+  unsigned int d_hash = dictionary()->compute_hash(name_h, class_loader);
   int d_index = dictionary()->hash_to_index(d_hash);
 
 // Hold SD lock around find_class and placeholder creation for DEFINE_CLASS
-  unsigned int p_hash = placeholders()->compute_hash(class_name, class_loader);
+  unsigned int p_hash = placeholders()->compute_hash(name_h, class_loader);
   int p_index = placeholders()->hash_to_index(p_hash);
   PlaceholderEntry* probe;
 
   {
     MutexLocker mu(SystemDictionary_lock, THREAD);
     // First check if class already defined
-    klassOop check = find_class(d_index, d_hash, class_name, class_loader);
+    klassOop check = find_class(d_index, d_hash, name_h, class_loader);
     if (check != NULL) {
       return(instanceKlassHandle(THREAD, check));
     }
 
     // Acquire define token for this class/classloader
     symbolHandle nullsymbolHandle;
-    probe = placeholders()->find_and_add(p_index, p_hash, class_name, class_loader, PlaceholderTable::DEFINE_CLASS, nullsymbolHandle, THREAD);
-    // Check if another thread defining in parallel
-    if (probe->definer() == NULL) {
-      // Thread will define the class
-      probe->set_definer(THREAD);
+    probe = placeholders()->find_and_add(p_index, p_hash, name_h, class_loader, PlaceholderTable::DEFINE_CLASS, nullsymbolHandle, THREAD);
+    // Wait if another thread defining in parallel
+    // All threads wait - even those that will throw duplicate class: otherwise
+    // caller is surprised by LinkageError: duplicate, but findLoadedClass fails
+    // if other thread has not finished updating dictionary
+    while (probe->definer() != NULL) {
+      SystemDictionary_lock->wait();
+    }
+    // Only special cases allow parallel defines and can use other thread's results
+    // Other cases fall through, and may run into duplicate defines
+    // caught by finding an entry in the SystemDictionary
+    if ((UnsyncloadClass || AllowParallelDefineClass) && (probe->instanceKlass() != NULL)) {
+        probe->remove_seen_thread(THREAD, PlaceholderTable::DEFINE_CLASS);
+        placeholders()->find_and_remove(p_index, p_hash, name_h, class_loader, THREAD);
+        SystemDictionary_lock->notify_all();
+#ifdef ASSERT
+        klassOop check = find_class(d_index, d_hash, name_h, class_loader);
+        assert(check != NULL, "definer missed recording success");
+#endif
+        return(instanceKlassHandle(THREAD, probe->instanceKlass()));
     } else {
-      // Wait for defining thread to finish and return results
-      while (probe->definer() != NULL) {
-        SystemDictionary_lock->wait();
-      }
-      if (probe->instanceKlass() != NULL) {
-        probe->remove_seen_thread(THREAD, PlaceholderTable::DEFINE_CLASS);
-        return(instanceKlassHandle(THREAD, probe->instanceKlass()));
-      } else {
-        // If definer had an error, try again as any new thread would
-        probe->set_definer(THREAD);
-#ifdef ASSERT
-        klassOop check = find_class(d_index, d_hash, class_name, class_loader);
-        assert(check == NULL, "definer missed recording success");
-#endif
-      }
+      // This thread will define the class (even if earlier thread tried and had an error)
+      probe->set_definer(THREAD);
     }
   }
 
@@ -1490,7 +1524,7 @@
   // definer must notify any waiting threads
   {
     MutexLocker mu(SystemDictionary_lock, THREAD);
-    PlaceholderEntry* probe = placeholders()->get_entry(p_index, p_hash, class_name, class_loader);
+    PlaceholderEntry* probe = placeholders()->get_entry(p_index, p_hash, name_h, class_loader);
     assert(probe != NULL, "DEFINE_CLASS placeholder lost?");
     if (probe != NULL) {
       if (HAS_PENDING_EXCEPTION) {
@@ -1501,6 +1535,7 @@
       }
       probe->set_definer(NULL);
       probe->remove_seen_thread(THREAD, PlaceholderTable::DEFINE_CLASS);
+      placeholders()->find_and_remove(p_index, p_hash, name_h, class_loader, THREAD);
       SystemDictionary_lock->notify_all();
     }
   }
@@ -1512,7 +1547,6 @@
 
   return k;
 }
-
 Handle SystemDictionary::compute_loader_lock_object(Handle class_loader, TRAPS) {
   // If class_loader is NULL we synchronize on _system_loader_lock_obj
   if (class_loader.is_null()) {
@@ -1902,11 +1936,11 @@
     warning("Cannot find sun/jkernel/DownloadManager");
   }
 #endif // KERNEL
+
   { // Compute whether we should use loadClass or loadClassInternal when loading classes.
     methodOop method = instanceKlass::cast(classloader_klass())->find_method(vmSymbols::loadClassInternal_name(), vmSymbols::string_class_signature());
     _has_loadClassInternal = (method != NULL);
   }
-
   { // Compute whether we should use checkPackageAccess or NOT
     methodOop method = instanceKlass::cast(classloader_klass())->find_method(vmSymbols::checkPackageAccess_name(), vmSymbols::class_protectiondomain_signature());
     _has_checkPackageAccess = (method != NULL);
diff -r 1a767c61ad01 -r fc7ab6287598 src/share/vm/classfile/systemDictionary.hpp
--- a/src/share/vm/classfile/systemDictionary.hpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/share/vm/classfile/systemDictionary.hpp	Fri Jan 09 14:39:07 2009 -0500
@@ -526,6 +526,7 @@
   static instanceKlassHandle load_instance_class(symbolHandle class_name, Handle class_loader, TRAPS);
   static Handle compute_loader_lock_object(Handle class_loader, TRAPS);
   static void check_loader_lock_contention(Handle loader_lock, TRAPS);
+  static bool is_parallelCapable(Handle class_loader);
 
   static klassOop find_shared_class(symbolHandle class_name);
 
diff -r 1a767c61ad01 -r fc7ab6287598 src/share/vm/classfile/vmSymbols.hpp
--- a/src/share/vm/classfile/vmSymbols.hpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/share/vm/classfile/vmSymbols.hpp	Fri Jan 09 14:39:07 2009 -0500
@@ -362,6 +362,7 @@
   template(class_signature,                           "Ljava/lang/Class;")                                        \
   template(string_signature,                          "Ljava/lang/String;")                                       \
   template(reference_signature,                       "Ljava/lang/ref/Reference;")                                \
+  template(concurrenthashmap_signature,               "Ljava/util/concurrent/ConcurrentHashMap;")                 \
   /* signature symbols needed by intrinsics */                                                                    \
   VM_INTRINSICS_DO(VM_INTRINSIC_IGNORE, VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, template, VM_ALIAS_IGNORE)            \
                                                                                                                   \
@@ -374,6 +375,9 @@
   /* used by ClassFormatError when class name is not known yet */                                                 \
   template(unknown_class_name,                        "<Unknown>")                                                \
                                                                                                                   \
+  /* used to identify class loaders handling parallel class loading */                                            \
+  template(parallelCapable_name,                      "parallelLockMap;")                                         \
+                                                                                                                  \
   /* JVM monitoring and management support */                                                                     \
   template(java_lang_StackTraceElement_array,          "[Ljava/lang/StackTraceElement;")                          \
   template(java_lang_management_ThreadState,           "java/lang/management/ThreadState")                        \
diff -r 1a767c61ad01 -r fc7ab6287598 src/share/vm/libadt/port.hpp
--- a/src/share/vm/libadt/port.hpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/share/vm/libadt/port.hpp	Fri Jan 09 14:39:07 2009 -0500
@@ -34,17 +34,6 @@
 #include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
-#undef bzero
-inline void bzero(void *b, int len) { memset(b,0,len); }
-#undef bcopy
-inline void bcopy(const void *s, void *d, size_t len) { memmove(d,s,len); }
-#undef bcmp
-inline int bcmp(const void *s,const void *t,int len) { return memcmp(s,t,len);}
-extern "C" unsigned long strtoul(const char *s, char **end, int base);
-
-// Definition for sys_errlist varies from Sun 4.1 & Solaris.
-// We use the new Solaris definition.
-#include <string.h>
 
 // Access to the C++ class virtual function pointer
 // Put the class in the macro
diff -r 1a767c61ad01 -r fc7ab6287598 src/share/vm/oops/constantPoolOop.cpp
--- a/src/share/vm/oops/constantPoolOop.cpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/share/vm/oops/constantPoolOop.cpp	Fri Jan 09 14:39:07 2009 -0500
@@ -962,7 +962,7 @@
       }
       case JVM_CONSTANT_Long: {
         u8 val = Bytes::get_Java_u8(bytes);
-        printf("long         %lldl", *(jlong *) &val);
+        printf("long         "INT64_FORMAT, *(jlong *) &val);
         ent_size = 8;
         idx++; // Long takes two cpool slots
         break;
diff -r 1a767c61ad01 -r fc7ab6287598 src/share/vm/oops/oopsHierarchy.hpp
--- a/src/share/vm/oops/oopsHierarchy.hpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/share/vm/oops/oopsHierarchy.hpp	Fri Jan 09 14:39:07 2009 -0500
@@ -126,8 +126,11 @@
   operator jobject () const           { return (jobject)obj(); }
   // from javaClasses.cpp
   operator JavaThread* () const       { return (JavaThread*)obj(); }
+
+#ifndef _LP64
   // from jvm.cpp
   operator jlong* () const            { return (jlong*)obj(); }
+#endif
 
   // from parNewGeneration and other things that want to get to the end of
   // an oop for stuff (like constMethodKlass.cpp, objArrayKlass.cpp)
diff -r 1a767c61ad01 -r fc7ab6287598 src/share/vm/opto/idealGraphPrinter.cpp
--- a/src/share/vm/opto/idealGraphPrinter.cpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/share/vm/opto/idealGraphPrinter.cpp	Fri Jan 09 14:39:07 2009 -0500
@@ -557,7 +557,7 @@
 
         // max. 2 chars allowed
         if (value >= -9 && value <= 99) {
-          sprintf(buffer, "%d", value);
+          sprintf(buffer, INT64_FORMAT, value);
           print_prop(short_name, buffer);
         } else {
           print_prop(short_name, "L");
diff -r 1a767c61ad01 -r fc7ab6287598 src/share/vm/prims/jvm.cpp
--- a/src/share/vm/prims/jvm.cpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/share/vm/prims/jvm.cpp	Fri Jan 09 14:39:07 2009 -0500
@@ -2475,7 +2475,8 @@
   if (Arguments::vfprintf_hook() != NULL) {
     jio_fprintf(defaultStream::output_stream(), "%s", s);
   } else {
-    ::write(defaultStream::output_fd(), s, (int)strlen(s));
+    // Make an unused local variable to avoid warning from gcc 4.x compiler.
+    size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s));
   }
 }
 
diff -r 1a767c61ad01 -r fc7ab6287598 src/share/vm/runtime/arguments.cpp
--- a/src/share/vm/runtime/arguments.cpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/share/vm/runtime/arguments.cpp	Fri Jan 09 14:39:07 2009 -0500
@@ -1361,7 +1361,7 @@
 
     // Feed the cache size setting into the JDK
     char buffer[1024];
-    sprintf(buffer, "java.lang.Integer.IntegerCache.high=%d", AutoBoxCacheMax);
+    sprintf(buffer, "java.lang.Integer.IntegerCache.high=" INTX_FORMAT, AutoBoxCacheMax);
     add_property(buffer);
   }
   if (AggressiveOpts && FLAG_IS_DEFAULT(DoEscapeAnalysis)) {
diff -r 1a767c61ad01 -r fc7ab6287598 src/share/vm/runtime/globals.hpp
--- a/src/share/vm/runtime/globals.hpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/share/vm/runtime/globals.hpp	Fri Jan 09 14:39:07 2009 -0500
@@ -835,8 +835,21 @@
           "Prints the system dictionary at exit")                           \
                                                                             \
   diagnostic(bool, UnsyncloadClass, false,                                  \
-          "Unstable: VM calls loadClass unsynchronized. Custom classloader "\
-          "must call VM synchronized for findClass & defineClass")          \
+          "Unstable: VM calls loadClass unsynchronized. Custom "            \
+          "class loader  must call VM synchronized for findClass "          \
+          "and defineClass.")                                               \
+                                                                            \
+  product(bool, AlwaysLockClassLoader, false,                               \
+          "Require the VM to acquire the class loader lock before calling " \
+          "loadClass() even for class loaders registering "                 \
+          "as parallel capable. Default false. ")                           \
+                                                                            \
+  product(bool, AllowParallelDefineClass, false,                            \
+          "Allow parallel defineClass requests for class loaders "          \
+          "registering as parallel capable. Default false")                 \
+                                                                            \
+  product(bool, MustCallLoadClassInternal, false,                           \
+          "Call loadClassInternal() rather than loadClass().Default false") \
                                                                             \
   product_pd(bool, DontYieldALot,                                           \
           "Throw away obvious excess yield calls (for SOLARIS only)")       \
diff -r 1a767c61ad01 -r fc7ab6287598 src/share/vm/runtime/memprofiler.cpp
--- a/src/share/vm/runtime/memprofiler.cpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/share/vm/runtime/memprofiler.cpp	Fri Jan 09 14:39:07 2009 -0500
@@ -104,21 +104,22 @@
   }
 
   // Print trace line in log
-  fprintf(_log_fp, "%6.1f,%5d,%5d,%6ld,%6ld,%6ld,%6ld,",
-      os::elapsedTime(),
-      Threads::number_of_threads(),
-      SystemDictionary::number_of_classes(),
-      Universe::heap()->used() / K,
-      Universe::heap()->capacity() / K,
-      Universe::heap()->permanent_used() / HWperKB,
-      Universe::heap()->permanent_capacity() / HWperKB);
+  fprintf(_log_fp, "%6.1f,%5d,%5d," UINTX_FORMAT_W(6) "," UINTX_FORMAT_W(6) ","
+          UINTX_FORMAT_W(6) "," UINTX_FORMAT_W(6) ",",
+          os::elapsedTime(),
+          Threads::number_of_threads(),
+          SystemDictionary::number_of_classes(),
+          Universe::heap()->used() / K,
+          Universe::heap()->capacity() / K,
+          Universe::heap()->permanent_used() / HWperKB,
+          Universe::heap()->permanent_capacity() / HWperKB);
 
-  fprintf(_log_fp, "%6ld,", CodeCache::capacity() / K);
+  fprintf(_log_fp, UINTX_FORMAT_W(6) ",", CodeCache::capacity() / K);
 
-  fprintf(_log_fp, "%6ld,%6ld,%6ld\n",
-      handles_memory_usage / K,
-      resource_memory_usage / K,
-      OopMapCache::memory_usage() / K);
+  fprintf(_log_fp, UINTX_FORMAT_W(6) "," UINTX_FORMAT_W(6) ",%6ld\n",
+          handles_memory_usage / K,
+          resource_memory_usage / K,
+          OopMapCache::memory_usage() / K);
   fflush(_log_fp);
 }
 
diff -r 1a767c61ad01 -r fc7ab6287598 src/share/vm/runtime/safepoint.cpp
--- a/src/share/vm/runtime/safepoint.cpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/share/vm/runtime/safepoint.cpp	Fri Jan 09 14:39:07 2009 -0500
@@ -730,7 +730,7 @@
   if (DieOnSafepointTimeout) {
     char msg[1024];
     VM_Operation *op = VMThread::vm_operation();
-    sprintf(msg, "Safepoint sync time longer than %d ms detected when executing %s.",
+    sprintf(msg, "Safepoint sync time longer than " INTX_FORMAT "ms detected when executing %s.",
             SafepointTimeoutDelay,
             op != NULL ? op->name() : "no vm operation");
     fatal(msg);
diff -r 1a767c61ad01 -r fc7ab6287598 src/share/vm/runtime/synchronizer.cpp
--- a/src/share/vm/runtime/synchronizer.cpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/share/vm/runtime/synchronizer.cpp	Fri Jan 09 14:39:07 2009 -0500
@@ -424,7 +424,7 @@
 // asserts is that error message -- often something about negative array
 // indices -- is opaque.
 
-#define CTASSERT(x) { int tag[1-(2*!(x))]; printf ("Tag @%X\n", tag); }
+#define CTASSERT(x) { int tag[1-(2*!(x))]; printf ("Tag @" INTPTR_FORMAT "\n", (intptr_t)tag); }
 
 void ObjectMonitor::ctAsserts() {
   CTASSERT(offset_of (ObjectMonitor, _header) == 0);
diff -r 1a767c61ad01 -r fc7ab6287598 src/share/vm/utilities/globalDefinitions.hpp
--- a/src/share/vm/utilities/globalDefinitions.hpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/share/vm/utilities/globalDefinitions.hpp	Fri Jan 09 14:39:07 2009 -0500
@@ -1087,15 +1087,24 @@
 // Format macros that allow the field width to be specified.  The width must be
 // a string literal (e.g., "8") or a macro that evaluates to one.
 #ifdef _LP64
+#define UINTX_FORMAT_W(width)   UINT64_FORMAT_W(width)
 #define SSIZE_FORMAT_W(width)   INT64_FORMAT_W(width)
 #define SIZE_FORMAT_W(width)    UINT64_FORMAT_W(width)
 #else
+#define UINTX_FORMAT_W(width)   UINT32_FORMAT_W(width)
 #define SSIZE_FORMAT_W(width)   INT32_FORMAT_W(width)
 #define SIZE_FORMAT_W(width)    UINT32_FORMAT_W(width)
 #endif // _LP64
 
 // Format pointers and size_t (or size_t-like integer types) which change size
-// between 32- and 64-bit.
+// between 32- and 64-bit. The pointer format theoretically should be "%p",
+// however, it has different output on different platforms. On Windows, the data
+// will be padded with zeros automatically. On Solaris, we can use "%016p" &
+// "%08p" on 64 bit & 32 bit platforms to make the data padded with extra zeros.
+// On Linux, "%016p" or "%08p" is not be allowed, at least on the latest GCC
+// 4.3.2. So we have to use "%016x" or "%08x" to simulate the printing format.
+// GCC 4.3.2, however requires the data to be converted to "intptr_t" when
+// using "%x".
 #ifdef  _LP64
 #define PTR_FORMAT    PTR64_FORMAT
 #define UINTX_FORMAT  UINT64_FORMAT
diff -r 1a767c61ad01 -r fc7ab6287598 src/share/vm/utilities/globalDefinitions_gcc.hpp
--- a/src/share/vm/utilities/globalDefinitions_gcc.hpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/share/vm/utilities/globalDefinitions_gcc.hpp	Fri Jan 09 14:39:07 2009 -0500
@@ -116,7 +116,9 @@
   #ifdef _LP64
     #define NULL_WORD  0L
   #else
-    #define NULL_WORD  0
+    // Cast 0 to intptr_t rather than int32_t since they are not the same type
+    // on platforms such as Mac OS X.
+    #define NULL_WORD  ((intptr_t)0)
   #endif
 #else
   #define NULL_WORD  NULL
diff -r 1a767c61ad01 -r fc7ab6287598 src/share/vm/utilities/globalDefinitions_sparcWorks.hpp
--- a/src/share/vm/utilities/globalDefinitions_sparcWorks.hpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/share/vm/utilities/globalDefinitions_sparcWorks.hpp	Fri Jan 09 14:39:07 2009 -0500
@@ -115,7 +115,9 @@
   #ifdef _LP64
     #define NULL_WORD  0L
   #else
-    #define NULL_WORD  0
+    // Cast 0 to intptr_t rather than int32_t since they are not the same type
+    // on some platforms.
+    #define NULL_WORD  ((intptr_t)0)
   #endif
 #else
   #define NULL_WORD  NULL
diff -r 1a767c61ad01 -r fc7ab6287598 src/share/vm/utilities/ostream.cpp
--- a/src/share/vm/utilities/ostream.cpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/share/vm/utilities/ostream.cpp	Fri Jan 09 14:39:07 2009 -0500
@@ -300,7 +300,10 @@
 }
 
 void fileStream::write(const char* s, size_t len) {
-  if (_file != NULL)  fwrite(s, 1, len, _file);
+  if (_file != NULL)  {
+    // Make an unused local variable to avoid warning from gcc 4.x compiler.
+    size_t count = fwrite(s, 1, len, _file);
+  }
   update_position(s, len);
 }
 
@@ -328,7 +331,10 @@
 }
 
 void fdStream::write(const char* s, size_t len) {
-  if (_fd != -1) ::write(_fd, s, (int)len);
+  if (_fd != -1) {
+    // Make an unused local variable to avoid warning from gcc 4.x compiler.
+    size_t count = ::write(_fd, s, (int)len);
+  }
   update_position(s, len);
 }
 
diff -r 1a767c61ad01 -r fc7ab6287598 src/share/vm/utilities/vmError.cpp
--- a/src/share/vm/utilities/vmError.cpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/share/vm/utilities/vmError.cpp	Fri Jan 09 14:39:07 2009 -0500
@@ -674,6 +674,11 @@
     reset_signal_handlers();
 
   } else {
+    // If UseOsErrorReporting we call this for each level of the call stack
+    // while searching for the exception handler.  Only the first level needs
+    // to be reported.
+    if (UseOSErrorReporting && log_done) return;
+
     // This is not the first error, see if it happened in a different thread
     // or in the same thread during error reporting.
     if (first_error_tid != mytid) {
diff -r 1a767c61ad01 -r fc7ab6287598 src/share/vm/utilities/vmError.hpp
--- a/src/share/vm/utilities/vmError.hpp	Tue Jan 06 16:10:11 2009 -0800
+++ b/src/share/vm/utilities/vmError.hpp	Fri Jan 09 14:39:07 2009 -0500
@@ -50,7 +50,7 @@
 
   // additional info for VM internal errors
   const char * _filename;
-  int          _lineno;
+  size_t       _lineno;
 
   // used by fatal error handler
   int          _current_step;