7005259: CMS: BubbleUpRef asserts referent(obj)->is_oop() failed: Enqueued a bad referent
Summary: Relaxed the assert by allowing NULL referents when discovery may be concurrent.
Reviewed-by: johnc, jcoomes
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#ifndef SHARE_VM_MEMORY_OOPFACTORY_HPP
#define SHARE_VM_MEMORY_OOPFACTORY_HPP
#include "classfile/symbolTable.hpp"
#include "classfile/systemDictionary.hpp"
#include "memory/universe.hpp"
#include "oops/klassOop.hpp"
#include "oops/objArrayKlass.hpp"
#include "oops/oop.hpp"
#include "oops/typeArrayKlass.hpp"
#include "utilities/growableArray.hpp"
// oopFactory is a class used for creating new objects.
class vframeArray;
class oopFactory: AllStatic {
public:
// Basic type leaf array allocation
static typeArrayOop new_boolArray (int length, TRAPS) { return typeArrayKlass::cast(Universe::boolArrayKlassObj ())->allocate(length, CHECK_NULL); }
static typeArrayOop new_charArray (int length, TRAPS) { return typeArrayKlass::cast(Universe::charArrayKlassObj ())->allocate(length, CHECK_NULL); }
static typeArrayOop new_singleArray(int length, TRAPS) { return typeArrayKlass::cast(Universe::singleArrayKlassObj())->allocate(length, CHECK_NULL); }
static typeArrayOop new_doubleArray(int length, TRAPS) { return typeArrayKlass::cast(Universe::doubleArrayKlassObj())->allocate(length, CHECK_NULL); }
static typeArrayOop new_byteArray (int length, TRAPS) { return typeArrayKlass::cast(Universe::byteArrayKlassObj ())->allocate(length, CHECK_NULL); }
static typeArrayOop new_shortArray (int length, TRAPS) { return typeArrayKlass::cast(Universe::shortArrayKlassObj ())->allocate(length, CHECK_NULL); }
static typeArrayOop new_intArray (int length, TRAPS) { return typeArrayKlass::cast(Universe::intArrayKlassObj ())->allocate(length, CHECK_NULL); }
static typeArrayOop new_longArray (int length, TRAPS) { return typeArrayKlass::cast(Universe::longArrayKlassObj ())->allocate(length, CHECK_NULL); }
// create java.lang.Object[]
static objArrayOop new_objectArray(int length, TRAPS) {
return objArrayKlass::
cast(Universe::objectArrayKlassObj())->allocate(length, CHECK_NULL);
}
static typeArrayOop new_charArray (const char* utf8_str, TRAPS);
static typeArrayOop new_permanent_charArray (int length, TRAPS);
static typeArrayOop new_permanent_byteArray (int length, TRAPS); // used for class file structures
static typeArrayOop new_permanent_shortArray(int length, TRAPS); // used for class file structures
static typeArrayOop new_permanent_intArray (int length, TRAPS); // used for class file structures
static typeArrayOop new_typeArray(BasicType type, int length, TRAPS);
// Symbols
static symbolOop new_symbol(const char* utf8_buffer, int length, TRAPS) {
assert(utf8_buffer != NULL, "just checking");
return SymbolTable::lookup(utf8_buffer, length, CHECK_NULL);
}
static void new_symbols(constantPoolHandle cp, int names_count,
const char** name, int* lengths,
int* cp_indices, unsigned int* hashValues,
TRAPS) {
SymbolTable::add(cp, names_count, name, lengths, cp_indices,
hashValues, CHECK);
}
static symbolOop new_symbol(char* name, TRAPS) { return new_symbol(name, (int)strlen(name), CHECK_NULL); }
static symbolOop new_symbol(const char* name, TRAPS) { return new_symbol(name, (int)strlen(name), CHECK_NULL); }
static symbolOop new_symbol(symbolHandle sym, int begin, int end, TRAPS) {
assert(begin <= end && end <= sym->utf8_length(), "just checking");
return SymbolTable::lookup(sym, begin, end, CHECK_NULL);
}
// Create symbols as above but return a handle
static symbolHandle new_symbol_handle(const char* name, int length, TRAPS) {
symbolOop sym = new_symbol(name, length, THREAD);
return symbolHandle(THREAD, sym);
}
static symbolHandle new_symbol_handle(char* name, TRAPS) { return new_symbol_handle(name, (int)strlen(name), CHECK_(symbolHandle())); }
static symbolHandle new_symbol_handle(const char* name, TRAPS) { return new_symbol_handle(name, (int)strlen(name), CHECK_(symbolHandle())); }
// Constant pools
static constantPoolOop new_constantPool (int length,
bool is_conc_safe,
TRAPS);
static constantPoolCacheOop new_constantPoolCache(int length,
bool is_conc_safe,
TRAPS);
// Instance classes
static klassOop new_instanceKlass(int vtable_len, int itable_len,
int static_field_size,
unsigned int nonstatic_oop_map_count,
ReferenceType rt, TRAPS);
// Methods
private:
static constMethodOop new_constMethod(int byte_code_size,
int compressed_line_number_size,
int localvariable_table_length,
int checked_exceptions_length,
bool is_conc_safe,
TRAPS);
public:
// Set is_conc_safe for methods which cannot safely be
// processed by concurrent GC even after the return of
// the method.
static methodOop new_method(int byte_code_size,
AccessFlags access_flags,
int compressed_line_number_size,
int localvariable_table_length,
int checked_exceptions_length,
bool is_conc_safe,
TRAPS);
// Method Data containers
static methodDataOop new_methodData(methodHandle method, TRAPS);
// System object arrays
static objArrayOop new_system_objArray(int length, TRAPS);
// Regular object arrays
static objArrayOop new_objArray(klassOop klass, int length, TRAPS);
// For compiled ICs
static compiledICHolderOop new_compiledICHolder(methodHandle method, KlassHandle klass, TRAPS);
};
#endif // SHARE_VM_MEMORY_OOPFACTORY_HPP