Exemple #1
0
StubCodeGenerator::~StubCodeGenerator() {
  if (PrintStubCode || _print_code) {
    CodeBuffer* cbuf = _masm->code();
    CodeBlob*   blob = CodeCache::find_blob_unsafe(cbuf->insts()->start());
    if (blob != NULL) {
      blob->set_strings(cbuf->strings());
    }
    bool saw_first = false;
    StubCodeDesc* toprint[1000];
    int toprint_len = 0;
    for (StubCodeDesc* cdesc = _last_stub; cdesc != NULL; cdesc = cdesc->_next) {
      toprint[toprint_len++] = cdesc;
      if (cdesc == _first_stub) { saw_first = true; break; }
    }
    assert(saw_first, "must get both first & last");
    // Print in reverse order:
    qsort(toprint, toprint_len, sizeof(toprint[0]), compare_cdesc);
    for (int i = 0; i < toprint_len; i++) {
      StubCodeDesc* cdesc = toprint[i];
      cdesc->print();
      tty->cr();
      Disassembler::decode(cdesc->begin(), cdesc->end());
      tty->cr();
    }
  }
}
void CodeBlobCollector::collect() {   
  assert_locked_or_safepoint(CodeCache_lock);
  assert(_global_code_blobs == NULL, "checking");

  // create the global list
  _global_code_blobs = new (ResourceObj::C_HEAP) GrowableArray<JvmtiCodeBlobDesc*>(50,true);

  // iterate over the stub code descriptors and put them in the list first.
  int index = 0;
  StubCodeDesc* desc;
  while ((desc = StubCodeDesc::desc_for_index(++index)) != NULL) {   
    _global_code_blobs->append(new JvmtiCodeBlobDesc(desc->name(), desc->begin(), desc->end()));
  }

  // next iterate over all the non-nmethod code blobs and add them to
  // the list - as noted above this will filter out duplicates and
  // enclosing blobs.
  Unimplemented();
  //CodeCache::blobs_do(do_blob);

  // make the global list the instance list so that it can be used
  // for other iterations.
  _code_blobs = _global_code_blobs;
  _global_code_blobs = NULL;
}  
void CodeBlobCollector::collect() {
  assert_locked_or_safepoint(CodeCache_lock);
  assert(_global_code_blobs == NULL, "checking");

  // create the global list
  _global_code_blobs = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<JvmtiCodeBlobDesc*>(50,true);

  // iterate over the stub code descriptors and put them in the list first.
  for (StubCodeDesc* desc = StubCodeDesc::first(); desc != NULL; desc = StubCodeDesc::next(desc)) {
    _global_code_blobs->append(new JvmtiCodeBlobDesc(desc->name(), desc->begin(), desc->end()));
  }

  // Vtable stubs are not described with StubCodeDesc,
  // process them separately
  VtableStubs::vtable_stub_do(do_vtable_stub);

  // next iterate over all the non-nmethod code blobs and add them to
  // the list - as noted above this will filter out duplicates and
  // enclosing blobs.
  CodeCache::blobs_do(do_blob);

  // make the global list the instance list so that it can be used
  // for other iterations.
  _code_blobs = _global_code_blobs;
  _global_code_blobs = NULL;
}
Exemple #4
0
void VMError::report(outputStream* st, bool _verbose) {

# define BEGIN if (_current_step == 0) { _current_step = __LINE__;
# define STEP(s) } if (_current_step < __LINE__) { _current_step = __LINE__; _current_step_info = s;
# define END }

  // don't allocate large buffer on stack
  static char buf[O_BUFLEN];

  BEGIN

  STEP("printing fatal error message")

    st->print_cr("#");
    if (should_report_bug(_id)) {
      st->print_cr("# A fatal error has been detected by the Java Runtime Environment:");
    } else {
      st->print_cr("# There is insufficient memory for the Java "
                   "Runtime Environment to continue.");
    }

#ifndef PRODUCT
  // Error handler self tests

  // test secondary error handling. Test it twice, to test that resetting
  // error handler after a secondary crash works.
  STEP("test secondary crash 1")
    if (_verbose && TestCrashInErrorHandler != 0) {
      st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...",
        TestCrashInErrorHandler);
      controlled_crash(TestCrashInErrorHandler);
    }

  STEP("test secondary crash 2")
    if (_verbose && TestCrashInErrorHandler != 0) {
      st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...",
        TestCrashInErrorHandler);
      controlled_crash(TestCrashInErrorHandler);
    }

  STEP("test safefetch in error handler")
    // test whether it is safe to use SafeFetch32 in Crash Handler. Test twice
    // to test that resetting the signal handler works correctly.
    if (_verbose && TestSafeFetchInErrorHandler) {
      st->print_cr("Will test SafeFetch...");
      if (CanUseSafeFetch32()) {
        int* const invalid_pointer = (int*) get_segfault_address();
        const int x = 0x76543210;
        int i1 = SafeFetch32(invalid_pointer, x);
        int i2 = SafeFetch32(invalid_pointer, x);
        if (i1 == x && i2 == x) {
          st->print_cr("SafeFetch OK."); // Correctly deflected and returned default pattern
        } else {
          st->print_cr("??");
        }
      } else {
        st->print_cr("not possible; skipped.");
      }
    }
#endif // PRODUCT

  STEP("printing type of error")

     switch(_id) {
       case OOM_MALLOC_ERROR:
       case OOM_MMAP_ERROR:
         if (_size) {
           st->print("# Native memory allocation ");
           st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " :
                                                 "(mmap) failed to map ");
           jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size);
           st->print("%s", buf);
           st->print(" bytes");
           if (strlen(_detail_msg) > 0) {
             st->print(" for ");
             st->print("%s", _detail_msg);
           }
           st->cr();
         } else {
           if (strlen(_detail_msg) > 0) {
             st->print("# ");
             st->print_cr("%s", _detail_msg);
           }
         }
         // In error file give some solutions
         if (_verbose) {
           print_oom_reasons(st);
         } else {
           return;  // that's enough for the screen
         }
         break;
       case INTERNAL_ERROR:
       default:
         break;
     }

  STEP("printing exception/signal name")

     st->print_cr("#");
     st->print("#  ");
     // Is it an OS exception/signal?
     if (os::exception_name(_id, buf, sizeof(buf))) {
       st->print("%s", buf);
       st->print(" (0x%x)", _id);                // signal number
       st->print(" at pc=" PTR_FORMAT, p2i(_pc));
     } else {
       if (should_report_bug(_id)) {
         st->print("Internal Error");
       } else {
         st->print("Out of Memory Error");
       }
       if (_filename != NULL && _lineno > 0) {
#ifdef PRODUCT
         // In product mode chop off pathname?
         char separator = os::file_separator()[0];
         const char *p = strrchr(_filename, separator);
         const char *file = p ? p+1 : _filename;
#else
         const char *file = _filename;
#endif
         st->print(" (%s:%d)", file, _lineno);
       } else {
         st->print(" (0x%x)", _id);
       }
     }

  STEP("printing current thread and pid")

     // process id, thread id
     st->print(", pid=%d", os::current_process_id());
     st->print(", tid=" UINTX_FORMAT, os::current_thread_id());
     st->cr();

  STEP("printing error message")

     if (should_report_bug(_id)) {  // already printed the message.
       // error message
       if (strlen(_detail_msg) > 0) {
         st->print_cr("#  %s: %s", _message ? _message : "Error", _detail_msg);
       } else if (_message) {
         st->print_cr("#  Error: %s", _message);
       }
     }

  STEP("printing Java version string")

     report_vm_version(st, buf, sizeof(buf));

  STEP("printing problematic frame")

     // Print current frame if we have a context (i.e. it's a crash)
     if (_context) {
       st->print_cr("# Problematic frame:");
       st->print("# ");
       frame fr = os::fetch_frame_from_context(_context);
       fr.print_on_error(st, buf, sizeof(buf));
       st->cr();
       st->print_cr("#");
     }

  STEP("printing core file information")
    st->print("# ");
    if (CreateCoredumpOnCrash) {
      if (coredump_status) {
        st->print("Core dump will be written. Default location: %s", coredump_message);
      } else {
        st->print("No core dump will be written. %s", coredump_message);
      }
    } else {
      st->print("CreateCoredumpOnCrash turned off, no core file dumped");
    }
    st->cr();
    st->print_cr("#");

  STEP("printing bug submit message")

     if (should_report_bug(_id) && _verbose) {
       print_bug_submit_message(st, _thread);
     }

  STEP("printing summary")

     if (_verbose) {
       st->cr();
       st->print_cr("---------------  S U M M A R Y ------------");
       st->cr();
     }

  STEP("printing VM option summary")

     if (_verbose) {
       // VM options
       Arguments::print_summary_on(st);
       st->cr();
     }

  STEP("printing summary machine and OS info")

     if (_verbose) {
       os::print_summary_info(st, buf, sizeof(buf));
     }


  STEP("printing date and time")

     if (_verbose) {
       os::print_date_and_time(st, buf, sizeof(buf));
     }

  STEP("printing thread")

     if (_verbose) {
       st->cr();
       st->print_cr("---------------  T H R E A D  ---------------");
       st->cr();
     }

  STEP("printing current thread")

     // current thread
     if (_verbose) {
       if (_thread) {
         st->print("Current thread (" PTR_FORMAT "):  ", p2i(_thread));
         _thread->print_on_error(st, buf, sizeof(buf));
         st->cr();
       } else {
         st->print_cr("Current thread is native thread");
       }
       st->cr();
     }

  STEP("printing current compile task")

     if (_verbose && _thread && _thread->is_Compiler_thread()) {
        CompilerThread* t = (CompilerThread*)_thread;
        if (t->task()) {
           st->cr();
           st->print_cr("Current CompileTask:");
           t->task()->print_line_on_error(st, buf, sizeof(buf));
           st->cr();
        }
     }


  STEP("printing stack bounds")

     if (_verbose) {
       st->print("Stack: ");

       address stack_top;
       size_t stack_size;

       if (_thread) {
          stack_top = _thread->stack_base();
          stack_size = _thread->stack_size();
       } else {
          stack_top = os::current_stack_base();
          stack_size = os::current_stack_size();
       }

       address stack_bottom = stack_top - stack_size;
       st->print("[" PTR_FORMAT "," PTR_FORMAT "]", p2i(stack_bottom), p2i(stack_top));

       frame fr = _context ? os::fetch_frame_from_context(_context)
                           : os::current_frame();

       if (fr.sp()) {
         st->print(",  sp=" PTR_FORMAT, p2i(fr.sp()));
         size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024);
         st->print(",  free space=" SIZE_FORMAT "k", free_stack_size);
       }

       st->cr();
     }

  STEP("printing native stack")

   if (_verbose) {
     if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) {
       // We have printed the native stack in platform-specific code
       // Windows/x64 needs special handling.
     } else {
       frame fr = _context ? os::fetch_frame_from_context(_context)
                           : os::current_frame();

       print_native_stack(st, fr, _thread, buf, sizeof(buf));
     }
   }

  STEP("printing Java stack")

     if (_verbose && _thread && _thread->is_Java_thread()) {
       print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf));
     }

  STEP("printing target Java thread stack")

     // printing Java thread stack trace if it is involved in GC crash
     if (_verbose && _thread && (_thread->is_Named_thread())) {
       JavaThread*  jt = ((NamedThread *)_thread)->processed_thread();
       if (jt != NULL) {
         st->print_cr("JavaThread " PTR_FORMAT " (nid = %d) was being processed", p2i(jt), jt->osthread()->thread_id());
         print_stack_trace(st, jt, buf, sizeof(buf), true);
       }
     }

  STEP("printing siginfo")

     // signal no, signal code, address that caused the fault
     if (_verbose && _siginfo) {
       st->cr();
       os::print_siginfo(st, _siginfo);
       st->cr();
     }

  STEP("CDS archive access warning")

     // Print an explicit hint if we crashed on access to the CDS archive.
     if (_verbose && _siginfo) {
       check_failing_cds_access(st, _siginfo);
       st->cr();
     }

  STEP("printing register info")

     // decode register contents if possible
     if (_verbose && _context && Universe::is_fully_initialized()) {
       os::print_register_info(st, _context);
       st->cr();
     }

  STEP("printing registers, top of stack, instructions near pc")

     // registers, top of stack, instructions near pc
     if (_verbose && _context) {
       os::print_context(st, _context);
       st->cr();
     }

  STEP("printing code blob if possible")

     if (_verbose && _context) {
       CodeBlob* cb = CodeCache::find_blob(_pc);
       if (cb != NULL) {
         if (Interpreter::contains(_pc)) {
           // The interpreter CodeBlob is very large so try to print the codelet instead.
           InterpreterCodelet* codelet = Interpreter::codelet_containing(_pc);
           if (codelet != NULL) {
             codelet->print_on(st);
             Disassembler::decode(codelet->code_begin(), codelet->code_end(), st);
           }
         } else {
           StubCodeDesc* desc = StubCodeDesc::desc_for(_pc);
           if (desc != NULL) {
             desc->print_on(st);
             Disassembler::decode(desc->begin(), desc->end(), st);
           } else {
             Disassembler::decode(cb, st);
             st->cr();
           }
         }
       }
     }

  STEP("printing VM operation")

     if (_verbose && _thread && _thread->is_VM_thread()) {
        VMThread* t = (VMThread*)_thread;
        VM_Operation* op = t->vm_operation();
        if (op) {
          op->print_on_error(st);
          st->cr();
          st->cr();
        }
     }

  STEP("printing process")

     if (_verbose) {
       st->cr();
       st->print_cr("---------------  P R O C E S S  ---------------");
       st->cr();
     }

  STEP("printing all threads")

     // all threads
     if (_verbose && _thread) {
       Threads::print_on_error(st, _thread, buf, sizeof(buf));
       st->cr();
     }

  STEP("printing VM state")

     if (_verbose) {
       // Safepoint state
       st->print("VM state:");

       if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing");
       else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint");
       else st->print("not at safepoint");

       // Also see if error occurred during initialization or shutdown
       if (!Universe::is_fully_initialized()) {
         st->print(" (not fully initialized)");
       } else if (VM_Exit::vm_exited()) {
         st->print(" (shutting down)");
       } else {
         st->print(" (normal execution)");
       }
       st->cr();
       st->cr();
     }

  STEP("printing owned locks on error")

     // mutexes/monitors that currently have an owner
     if (_verbose) {
       print_owned_locks_on_error(st);
       st->cr();
     }

  STEP("printing number of OutOfMemoryError and StackOverflow exceptions")

     if (_verbose && Exceptions::has_exception_counts()) {
       st->print_cr("OutOfMemory and StackOverflow Exception counts:");
       Exceptions::print_exception_counts_on_error(st);
       st->cr();
     }

  STEP("printing compressed oops mode")

     if (_verbose && UseCompressedOops) {
       Universe::print_compressed_oops_mode(st);
       if (UseCompressedClassPointers) {
         Metaspace::print_compressed_class_space(st);
       }
       st->cr();
     }

  STEP("printing heap information")

     if (_verbose && Universe::is_fully_initialized()) {
       Universe::heap()->print_on_error(st);
       st->cr();
       st->print_cr("Polling page: " INTPTR_FORMAT, p2i(os::get_polling_page()));
       st->cr();
     }

  STEP("printing code cache information")

     if (_verbose && Universe::is_fully_initialized()) {
       // print code cache information before vm abort
       CodeCache::print_summary(st);
       st->cr();
     }

  STEP("printing ring buffers")

     if (_verbose) {
       Events::print_all(st);
       st->cr();
     }

  STEP("printing dynamic libraries")

     if (_verbose) {
       // dynamic libraries, or memory map
       os::print_dll_info(st);
       st->cr();
     }

  STEP("printing VM options")

     if (_verbose) {
       // VM options
       Arguments::print_on(st);
       st->cr();
     }

  STEP("printing warning if internal testing API used")

     if (WhiteBox::used()) {
       st->print_cr("Unsupported internal testing APIs have been used.");
       st->cr();
     }

  STEP("printing log configuration")
    if (_verbose){
      st->print_cr("Logging:");
      LogConfiguration::describe_current_configuration(st);
      st->cr();
    }

  STEP("printing all environment variables")

     if (_verbose) {
       os::print_environment_variables(st, env_list);
       st->cr();
     }

  STEP("printing signal handlers")

     if (_verbose) {
       os::print_signal_handlers(st, buf, sizeof(buf));
       st->cr();
     }

  STEP("Native Memory Tracking")
     if (_verbose) {
       MemTracker::error_report(st);
     }

  STEP("printing system")

     if (_verbose) {
       st->cr();
       st->print_cr("---------------  S Y S T E M  ---------------");
       st->cr();
     }

  STEP("printing OS information")

     if (_verbose) {
       os::print_os_info(st);
       st->cr();
     }

  STEP("printing CPU info")
     if (_verbose) {
       os::print_cpu_info(st, buf, sizeof(buf));
       st->cr();
     }

  STEP("printing memory info")

     if (_verbose) {
       os::print_memory_info(st);
       st->cr();
     }

  STEP("printing internal vm info")

     if (_verbose) {
       st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
       st->cr();
     }

  // print a defined marker to show that error handling finished correctly.
  STEP("printing end marker")

     if (_verbose) {
       st->print_cr("END.");
     }

  END

# undef BEGIN
# undef STEP
# undef END
}