--- a/hotspot/src/os_cpu/linux_mips/vm/os_linux_mips.cpp	Mon Dec 13 08:40:39 2010 +0800
+++ b/hotspot/src/os_cpu/linux_mips/vm/os_linux_mips.cpp	Tue Nov 30 10:23:02 2010 +0800
@@ -184,6 +184,7 @@
                         siginfo_t* info,
                         void* ucVoid,
                         int abort_if_unrecognized) {
+#ifndef PRODUCT
 	tty->print_cr("signal infomation:\n\
 			signo   = %x, \n\
 			sicode  = %x, \n\
@@ -193,6 +194,7 @@
 			info->si_code, 
 			info->si_errno,
 			info->si_addr);
+#endif		  
 
   ucontext_t* uc = (ucontext_t*) ucVoid;
 
@@ -225,11 +227,15 @@
   if (os::Linux::signal_handlers_are_installed) {
     if (t != NULL ){
       if(t->is_Java_thread()) {
+#ifndef PRODUCT
 	tty->print_cr("this thread is a java thread\n");
+#endif	
         thread = (JavaThread*)t;
       }
       else if(t->is_VM_thread()){
+#ifndef PRODUCT
 	tty->print_cr("this thread is a VM thread\n");
+#endif	
         vmthread = (VMThread *)t;
       }
     }
@@ -240,7 +246,9 @@
   address pc   = NULL;
 
   pc = (address) os::Linux::ucontext_get_pc(uc);
+#ifndef PRODUCT
   tty->print_cr("pc=%x", pc);
+#endif
   //%note os_trap_1
   if (info != NULL && uc != NULL && thread != NULL) {
     pc = (address) os::Linux::ucontext_get_pc(uc);
@@ -248,41 +256,57 @@
     if (sig == SIGSEGV) {
       address addr = (address) info->si_addr;
       // check if fault address is within thread stack
+#ifndef PRODUCT
       printf("handle all stack overflow variations\n");
       printf("addr = %x, stack base = %x, stack top = %x\n", 
 	      addr, 
 	      thread->stack_base(), 
 	      thread->stack_base() - thread->stack_size());
+#endif	      
 
       if (addr < thread->stack_base() &&
           addr >= thread->stack_base() - thread->stack_size()) {
         // stack overflow
+#ifndef PRODUCT
         printf("stack exception check \n");
+#endif	
         if (thread->in_stack_yellow_zone(addr)) {
+#ifndef PRODUCT
 	  printf("exception addr is in yellow zone\n");
+#endif	
           thread->disable_stack_yellow_zone();
           if (thread->thread_state() == _thread_in_Java) {
             // Throw a stack overflow exception.  Guard pages will be reenabled
             // while unwinding the stack.
+#ifndef PRODUCT
 	    printf("this thread is in java\n");
+#endif	
             stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW);
           } else {
             // Thread was in the vm or native code.  Return and try to finish.
+#ifndef PRODUCT
 	    printf("this thread is in vm or native codes and return\n");
+#endif	
             return 1;
           }
         } else if (thread->in_stack_red_zone(addr)) {
           // Fatal red zone violation.  Disable the guard pages and fall through
           // to handle_unexpected_exception way down below.
+#ifndef PRODUCT
 	  printf("exception addr is in red zone\n");
+#endif	
           thread->disable_stack_red_zone();
+#ifndef PRODUCT
           tty->print_raw_cr("An irrecoverable stack overflow has occurred.");
+#endif	
         } else {
           // Accessing stack address below sp may cause SEGV if current
           // thread has MAP_GROWSDOWN stack. This should only happen when
           // current thread was created by user code with MAP_GROWSDOWN flag
           // and then attached to VM. See notes in os_linux.cpp.
+#ifndef PRODUCT
 	  printf("exception addr is neither in yellow zone nor in the red one\n");
+#endif	
           if (thread->osthread()->expanding_stack() == 0) {
              thread->osthread()->set_expanding_stack();
              if (os::Linux::manually_expand_stack(thread, addr)) {
@@ -300,8 +324,10 @@
     if (thread->thread_state() == _thread_in_Java) {
       // Java thread running in Java code => find exception handler if any
       // a fault inside compiled code, the interpreter, or a stub
+#ifndef PRODUCT
       tty->print("java thread running in java code\n");
       tty->print_cr("polling address = %x", os::get_polling_page());
+#endif	
       if (sig == SIGSEGV && os::is_poll_address((address)info->si_addr)) {
 
         stub = SharedRuntime::get_poll_stub(pc);
@@ -311,7 +337,9 @@
         // Do not crash the VM in such a case.
         CodeBlob* cb = CodeCache::find_blob_unsafe(pc);
         nmethod* nm = cb->is_nmethod() ? (nmethod*)cb : NULL;
+#ifndef PRODUCT
 	printf("cb = %x, nm = %x\n", cb, nm);
+#endif	
         if (nm != NULL && nm->has_unsafe_access()) {
           stub = StubRoutines::handler_for_unsafe_access();
         }
@@ -339,25 +367,33 @@
      else if (sig == SIGSEGV &&
                !MacroAssembler::needs_explicit_null_check((intptr_t)info->si_addr)) {
           // Determination of interpreter/vtable stub/compiled code null exception
+#ifndef PRODUCT
           printf("continuation for implicit exception\n");
+#endif	
           stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL);
       }
     } else if (thread->thread_state() == _thread_in_vm &&
                sig == SIGBUS && /* info->si_code == BUS_OBJERR && */
                thread->doing_unsafe_access()) {
+#ifndef PRODUCT
 	tty->print_cr("SIGBUS in vm thread \n");
+#endif	
         stub = StubRoutines::handler_for_unsafe_access();
     }
 
     // jni_fast_Get<Primitive>Field can trap at certain pc's if a GC kicks in
     // and the heap gets shrunk before the field access.
     if ((sig == SIGSEGV) || (sig == SIGBUS)) {
+#ifndef PRODUCT
 	printf("jni fast get trap\n");
+#endif	
       address addr = JNI_FastGetField::find_slowcase_pc(pc);
       if (addr != (address)-1) {
         stub = addr;
       }
+#ifndef PRODUCT
       tty->print_cr("addr = %d, stub = %d\n", addr, stub);
+#endif	
     }
 
     // Check to see if we caught the safepoint code in the
@@ -367,7 +403,9 @@
     if ((sig == SIGSEGV) &&
         os::is_memory_serialize_page(thread, (address) info->si_addr)) {
       // Block current thread until the memory serialize page permission restored.
+#ifndef PRODUCT
       printf("write protecting the memory serialiazation page\n");
+#endif	
       os::block_on_serialize_page_trap();
       return true;
     }
@@ -394,7 +432,9 @@
 			//(uc->uc_mcontext.cause == 2 || uc->uc_mcontext.cause == 3)) {
 			(uc->uc_mcontext.hi1 == 2 || uc->uc_mcontext.hi1 == 3)) {
 			//aoqi: copy from jdk1.5, dont understand the struct mcontext_t.
+#ifndef PRODUCT
     tty->print_cr("execution protection violation\n");
+#endif
        
     int page_size = os::vm_page_size();
     address addr = (address) info->si_addr;
@@ -462,7 +502,9 @@
   }
 
   if (stub != NULL) {
+#ifndef PRODUCT
     tty->print_cr("resolved stub=%d\n",stub);
+#endif    
     // save all thread context in case we need to restore it
     if (thread != NULL) thread->set_saved_exception_pc(pc);
 
@@ -472,13 +514,17 @@
 
   // signal-chaining
   if (os::Linux::chained_handler(sig, info, ucVoid)) {
+#ifndef PRODUCT
      tty->print_cr("signal chaining\n");
+#endif    
      return true;
   }
 
   if (!abort_if_unrecognized) {
     // caller wants another chance, so give it to him
+#ifndef PRODUCT
     tty->print_cr("abort becauce of unrecognized\n");
+#endif    
     return false;
   }
 
@@ -491,7 +537,9 @@
   sigemptyset(&newset);
   sigaddset(&newset, sig);
   sigprocmask(SIG_UNBLOCK, &newset, NULL);
-	tty->print_cr("VMError in signal handler\n");
+#ifndef PRODUCT
+  tty->print_cr("VMError in signal handler\n");
+#endif    
   VMError err(t, sig, pc, info, ucVoid);
   err.report_and_die();