Ejemplo n.º 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();
    }
  }
}
Ejemplo n.º 2
0
static void find(intptr_t x, bool print_pc) {
  address addr = (address)x;

  CodeBlob* b = CodeCache::find_blob_unsafe(addr);
  if (b != NULL) {
    if (b->is_buffer_blob()) {
      // the interpreter is generated into a buffer blob
      InterpreterCodelet* i = Interpreter::codelet_containing(addr);
      if (i != NULL) {
        i->print();
        return;
      }
      if (Interpreter::contains(addr)) {
        tty->print_cr(INTPTR_FORMAT " is pointing into interpreter code (not bytecode specific)", addr);
        return;
      }
      //
      if (AdapterHandlerLibrary::contains(b)) {
        AdapterHandlerLibrary::print_handler(b);
      }
      // the stubroutines are generated into a buffer blob
      StubCodeDesc* d = StubCodeDesc::desc_for(addr);
      if (d != NULL) {
        d->print();
        if (print_pc) tty->cr();
        return;
      }
      if (StubRoutines::contains(addr)) {
        tty->print_cr(INTPTR_FORMAT " is pointing to an (unnamed) stub routine", addr);
        return;
      }
      // the InlineCacheBuffer is using stubs generated into a buffer blob
      if (InlineCacheBuffer::contains(addr)) {
        tty->print_cr(INTPTR_FORMAT " is pointing into InlineCacheBuffer", addr);
        return;
      }
      VtableStub* v = VtableStubs::stub_containing(addr);
      if (v != NULL) {
        v->print();
        return;
      }
    }
    if (print_pc && b->is_nmethod()) {
      ResourceMark rm;
      tty->print("%#p: Compiled ", addr);
      ((nmethod*)b)->method()->print_value_on(tty);
      tty->print("  = (CodeBlob*)" INTPTR_FORMAT, b);
      tty->cr();
      return;
    }
    if ( b->is_nmethod()) {
      if (b->is_zombie()) {
        tty->print_cr(INTPTR_FORMAT " is zombie nmethod", b);
      } else if (b->is_not_entrant()) {
        tty->print_cr(INTPTR_FORMAT " is non-entrant nmethod", b);
      }
    }
    b->print();
    return;
  }

  if (Universe::heap()->is_in(addr)) {
    HeapWord* p = Universe::heap()->block_start(addr);
    bool print = false;
    // If we couldn't find it it just may mean that heap wasn't parseable
    // See if we were just given an oop directly
    if (p != NULL && Universe::heap()->block_is_obj(p)) {
      print = true;
    } else if (p == NULL && ((oopDesc*)addr)->is_oop()) {
      p = (HeapWord*) addr;
      print = true;
    }
    if (print) {
      oop(p)->print();
      if (p != (HeapWord*)x && oop(p)->is_constMethod() &&
          constMethodOop(p)->contains(addr)) {
        Thread *thread = Thread::current();
        HandleMark hm(thread);
        methodHandle mh (thread, constMethodOop(p)->method());
        if (!mh->is_native()) {
          tty->print_cr("bci_from(%p) = %d; print_codes():",
                        addr, mh->bci_from(address(x)));
          mh->print_codes();
        }
      }
      return;
    }
  } else if (Universe::heap()->is_in_reserved(addr)) {
    tty->print_cr(INTPTR_FORMAT " is an unallocated location in the heap", addr);
    return;
  }

  if (JNIHandles::is_global_handle((jobject) addr)) {
    tty->print_cr(INTPTR_FORMAT " is a global jni handle", addr);
    return;
  }
  if (JNIHandles::is_weak_global_handle((jobject) addr)) {
    tty->print_cr(INTPTR_FORMAT " is a weak global jni handle", addr);
    return;
  }
  if (JNIHandleBlock::any_contains((jobject) addr)) {
    tty->print_cr(INTPTR_FORMAT " is a local jni handle", addr);
    return;
  }

  for(JavaThread *thread = Threads::first(); thread; thread = thread->next()) {
    // Check for privilege stack
    if (thread->privileged_stack_top() != NULL && thread->privileged_stack_top()->contains(addr)) {
      tty->print_cr(INTPTR_FORMAT " is pointing into the privilege stack for thread: " INTPTR_FORMAT, addr, thread);
      return;
    }
    // If the addr is a java thread print information about that.
    if (addr == (address)thread) {
       thread->print();
       return;
    }
  }

  // Try an OS specific find
  if (os::find(addr)) {
    return;
  }

  if (print_pc) {
    tty->print_cr(INTPTR_FORMAT ": probably in C++ code; check debugger", addr);
    Disassembler::decode(same_page(addr-40,addr),same_page(addr+40,addr));
    return;
  }

  tty->print_cr(INTPTR_FORMAT " is pointing to unknown location", addr);
}