38 _oop_list = new (ResourceObj::C_HEAP, mtInternal) 39 GrowableArray<UnhandledOopEntry>(free_list_size, true); 40 _level = 0; 41 } 42 43 UnhandledOops::~UnhandledOops() { 44 delete _oop_list; 45 } 46 47 48 void UnhandledOops::dump_oops(UnhandledOops *list) { 49 for (int k = 0; k < list->_oop_list->length(); k++) { 50 UnhandledOopEntry entry = list->_oop_list->at(k); 51 tty->print(" " INTPTR_FORMAT, p2i(entry._oop_ptr)); 52 } 53 tty->cr(); 54 } 55 56 // For debugging unhandled oop detector _in the debugger_ 57 // You don't want to turn it on in compiled code here. 58 static bool unhandled_oop_print=0; 59 60 void UnhandledOops::register_unhandled_oop(oop* op, address pc) { 61 if (!_thread->is_in_stack((address)op)) 62 return; 63 64 _level ++; 65 if (unhandled_oop_print) { 66 for (int i=0; i<_level; i++) tty->print(" "); 67 tty->print_cr("r " INTPTR_FORMAT, p2i(op)); 68 } 69 UnhandledOopEntry entry(op, pc); 70 _oop_list->push(entry); 71 } 72 73 74 bool match_oop_entry(void *op, UnhandledOopEntry e) { 75 return (e.oop_ptr() == op); 76 } 77 78 // Mark unhandled oop as okay for GC - the containing struct has an oops_do and 79 // for some reason the oop has to be on the stack. 80 // May not be called for the current thread, as in the case of 81 // VM_GetOrSetLocal in jvmti. 82 void UnhandledOops::allow_unhandled_oop(oop* op) { 83 assert (CheckUnhandledOops, "should only be called with checking option"); 84 85 int i = _oop_list->find_from_end(op, match_oop_entry); 86 assert(i!=-1, "safe for gc oop not in unhandled_oop_list"); 87 88 UnhandledOopEntry entry = _oop_list->at(i); 89 assert(!entry._ok_for_gc, "duplicate entry"); 90 entry._ok_for_gc = true; 91 _oop_list->at_put(i, entry); 92 } 93 94 95 // Called by the oop destructor to remove unhandled oop from the thread's 96 // oop list. All oops given are assumed to be on the list. If not, 97 // there's a bug in the unhandled oop detector. 98 void UnhandledOops::unregister_unhandled_oop(oop* op) { 99 if (!_thread->is_in_stack((address)op)) return; 100 101 _level --; 102 if (unhandled_oop_print) { 103 for (int i=0; i<_level; i++) tty->print(" "); 104 tty->print_cr("u " INTPTR_FORMAT, p2i(op)); 105 } 106 107 int i = _oop_list->find_from_end(op, match_oop_entry); 108 assert(i!=-1, "oop not in unhandled_oop_list"); 109 _oop_list->remove_at(i); 110 } 111 112 void UnhandledOops::clear_unhandled_oops() { 113 assert (CheckUnhandledOops, "should only be called with checking option"); 114 115 for (int k = 0; k < _oop_list->length(); k++) { 116 UnhandledOopEntry entry = _oop_list->at(k); 117 // If an entry is on the unhandled oop list but isn't on the stack 118 // anymore, it must not have gotten unregistered properly and it's a bug 119 // in the unhandled oop generator. 120 if(!_thread->is_in_stack((address)entry._oop_ptr)) { 121 tty->print_cr("oop_ptr is " INTPTR_FORMAT, p2i(entry._oop_ptr)); 122 tty->print_cr("thread is " INTPTR_FORMAT " from pc " INTPTR_FORMAT, 123 p2i(_thread), p2i(entry._pc)); 124 assert(false, "heap is corrupted by the unhandled oop detector"); 125 } | 38 _oop_list = new (ResourceObj::C_HEAP, mtInternal) 39 GrowableArray<UnhandledOopEntry>(free_list_size, true); 40 _level = 0; 41 } 42 43 UnhandledOops::~UnhandledOops() { 44 delete _oop_list; 45 } 46 47 48 void UnhandledOops::dump_oops(UnhandledOops *list) { 49 for (int k = 0; k < list->_oop_list->length(); k++) { 50 UnhandledOopEntry entry = list->_oop_list->at(k); 51 tty->print(" " INTPTR_FORMAT, p2i(entry._oop_ptr)); 52 } 53 tty->cr(); 54 } 55 56 // For debugging unhandled oop detector _in the debugger_ 57 // You don't want to turn it on in compiled code here. 58 static Thread* unhandled_oop_print = NULL; 59 60 void UnhandledOops::register_unhandled_oop(oop* op, address pc) { 61 if (!_thread->is_in_stack((address)op)) 62 return; 63 64 _level++; 65 if (unhandled_oop_print == _thread) { 66 for (int i=0; i < _level; i++) tty->print(" "); 67 tty->print_cr("r " INTPTR_FORMAT, p2i(op)); 68 } 69 UnhandledOopEntry entry(op, pc); 70 _oop_list->push(entry); 71 } 72 73 74 bool match_oop_entry(void *op, UnhandledOopEntry e) { 75 return (e.oop_ptr() == op); 76 } 77 78 // Mark unhandled oop as okay for GC - the containing struct has an oops_do and 79 // for some reason the oop has to be on the stack. 80 // May not be called for the current thread, as in the case of 81 // VM_GetOrSetLocal in jvmti. 82 void UnhandledOops::allow_unhandled_oop(oop* op) { 83 assert (CheckUnhandledOops, "should only be called with checking option"); 84 85 int i = _oop_list->find_from_end(op, match_oop_entry); 86 assert(i!=-1, "safe for gc oop not in unhandled_oop_list"); 87 88 UnhandledOopEntry entry = _oop_list->at(i); 89 assert(!entry._ok_for_gc, "duplicate entry"); 90 entry._ok_for_gc = true; 91 _oop_list->at_put(i, entry); 92 } 93 94 95 // Called by the oop destructor to remove unhandled oop from the thread's 96 // oop list. All oops given are assumed to be on the list. If not, 97 // there's a bug in the unhandled oop detector. 98 void UnhandledOops::unregister_unhandled_oop(oop* op) { 99 if (!_thread->is_in_stack((address)op)) return; 100 101 if (unhandled_oop_print == _thread) { 102 for (int i=0; i < _level; i++) tty->print(" "); 103 tty->print_cr("u " INTPTR_FORMAT, p2i(op)); 104 } 105 _level--; 106 107 int i = _oop_list->find_from_end(op, match_oop_entry); 108 assert(i!=-1, "oop not in unhandled_oop_list"); 109 _oop_list->remove_at(i); 110 } 111 112 void UnhandledOops::clear_unhandled_oops() { 113 assert (CheckUnhandledOops, "should only be called with checking option"); 114 115 for (int k = 0; k < _oop_list->length(); k++) { 116 UnhandledOopEntry entry = _oop_list->at(k); 117 // If an entry is on the unhandled oop list but isn't on the stack 118 // anymore, it must not have gotten unregistered properly and it's a bug 119 // in the unhandled oop generator. 120 if(!_thread->is_in_stack((address)entry._oop_ptr)) { 121 tty->print_cr("oop_ptr is " INTPTR_FORMAT, p2i(entry._oop_ptr)); 122 tty->print_cr("thread is " INTPTR_FORMAT " from pc " INTPTR_FORMAT, 123 p2i(_thread), p2i(entry._pc)); 124 assert(false, "heap is corrupted by the unhandled oop detector"); 125 } |