28 GrowableArray<JvmtiRawMonitor*> *JvmtiPendingMonitors::_monitors = new (ResourceObj::C_HEAP) GrowableArray<JvmtiRawMonitor*>(1,true);

    29 

    30 void JvmtiPendingMonitors::transition_raw_monitors() {

    31   assert((Threads::number_of_threads()==1),

    32          "Java thread has not created yet or more than one java thread \

    33 is running. Raw monitor transition will not work");

    34   JavaThread *current_java_thread = JavaThread::current();

    35   assert(current_java_thread->thread_state() == _thread_in_vm, "Must be in vm");

    36   {

    37     ThreadBlockInVM __tbivm(current_java_thread);

    38     for(int i=0; i< count(); i++) {

    39       JvmtiRawMonitor *rmonitor = monitors()->at(i);

    40       int r = rmonitor->raw_enter(current_java_thread);

    41       assert(r == ObjectMonitor::OM_OK, "raw_enter should have worked");

    42     }

    43   }

    44   // pending monitors are converted to real monitor so delete them all.

    45   dispose();

    46 }

    47 

   218 

   219 

   220 //

   221 // class JvmtiRawMonitor

   222 //

   223 

   224 JvmtiRawMonitor::JvmtiRawMonitor(const char *name) {

   225 #ifdef ASSERT

   226   _name = strcpy(NEW_C_HEAP_ARRAY(char, strlen(name) + 1), name);

   227 #else

   228   _name = NULL;

   229 #endif

   230   _magic = JVMTI_RM_MAGIC;

   231 }

   232 

   233 JvmtiRawMonitor::~JvmtiRawMonitor() {

   234 #ifdef ASSERT

   235   FreeHeap(_name);

   236 #endif

   237   _magic = 0;

   238 }

   239 

   240 

   241 bool

   242 JvmtiRawMonitor::is_valid() {

   243   int value = 0;

   244 

   245   // This object might not be a JvmtiRawMonitor so we can't assume

   246   // the _magic field is properly aligned. Get the value in a safe

   247   // way and then check against JVMTI_RM_MAGIC.

   248 

   249   switch (sizeof(_magic)) {

   250   case 2:

   251     value = Bytes::get_native_u2((address)&_magic);

   252     break;

   253 

   254   case 4:

   255     value = Bytes::get_native_u4((address)&_magic);

   256     break;

   257 

   258   case 8:

   259     value = Bytes::get_native_u8((address)&_magic);

   260     break;

   261 

   262   default:

   263     guarantee(false, "_magic field is an unexpected size");

   264   }

   265 

   266   return value == JVMTI_RM_MAGIC;

   267 }

   268