< prev index next >
src/share/vm/interpreter/interpreter.cpp
Print this page
@@ -109,44 +109,10 @@
}
// Make sure nobody can use _masm outside a CodeletMark lifespan.
*_masm = NULL;
}
-//------------------------------------------------------------------------------------------------------------------------
-// Implementation of platform independent aspects of Interpreter
-
-void AbstractInterpreter::initialize() {
- if (_code != NULL) return;
-
- // make sure 'imported' classes are initialized
- if (CountBytecodes || TraceBytecodes || StopInterpreterAt) BytecodeCounter::reset();
- if (PrintBytecodeHistogram) BytecodeHistogram::reset();
- if (PrintBytecodePairHistogram) BytecodePairHistogram::reset();
-
- InvocationCounter::reinitialize(DelayCompilationDuringStartup);
-
-}
-
-void AbstractInterpreter::print() {
- tty->cr();
- tty->print_cr("----------------------------------------------------------------------");
- tty->print_cr("Interpreter");
- tty->cr();
- tty->print_cr("code size = %6dK bytes", (int)_code->used_space()/1024);
- tty->print_cr("total space = %6dK bytes", (int)_code->total_space()/1024);
- tty->print_cr("wasted space = %6dK bytes", (int)_code->available_space()/1024);
- tty->cr();
- tty->print_cr("# of codelets = %6d" , _code->number_of_stubs());
- if (_code->number_of_stubs() != 0) {
- tty->print_cr("avg codelet size = %6d bytes", _code->used_space() / _code->number_of_stubs());
- tty->cr();
- }
- _code->print();
- tty->print_cr("----------------------------------------------------------------------");
- tty->cr();
-}
-
void interpreter_init() {
Interpreter::initialize();
#ifndef PRODUCT
if (TraceBytecodes) BytecodeTracer::set_closure(BytecodeTracer::std_closure());
@@ -164,386 +130,5 @@
JvmtiExport::post_dynamic_code_generated("Interpreter",
AbstractInterpreter::code()->code_start(),
AbstractInterpreter::code()->code_end());
}
}
-
-//------------------------------------------------------------------------------------------------------------------------
-// Implementation of interpreter
-
-StubQueue* AbstractInterpreter::_code = NULL;
-bool AbstractInterpreter::_notice_safepoints = false;
-address AbstractInterpreter::_rethrow_exception_entry = NULL;
-
-address AbstractInterpreter::_native_entry_begin = NULL;
-address AbstractInterpreter::_native_entry_end = NULL;
-address AbstractInterpreter::_slow_signature_handler;
-address AbstractInterpreter::_entry_table [AbstractInterpreter::number_of_method_entries];
-address AbstractInterpreter::_native_abi_to_tosca [AbstractInterpreter::number_of_result_handlers];
-
-//------------------------------------------------------------------------------------------------------------------------
-// Generation of complete interpreter
-
-AbstractInterpreterGenerator::AbstractInterpreterGenerator(StubQueue* _code) {
- _masm = NULL;
-}
-
-
-static const BasicType types[Interpreter::number_of_result_handlers] = {
- T_BOOLEAN,
- T_CHAR ,
- T_BYTE ,
- T_SHORT ,
- T_INT ,
- T_LONG ,
- T_VOID ,
- T_FLOAT ,
- T_DOUBLE ,
- T_OBJECT
-};
-
-void AbstractInterpreterGenerator::generate_all() {
-
-
- { CodeletMark cm(_masm, "slow signature handler");
- Interpreter::_slow_signature_handler = generate_slow_signature_handler();
- }
-
-}
-
-//------------------------------------------------------------------------------------------------------------------------
-// Entry points
-
-AbstractInterpreter::MethodKind AbstractInterpreter::method_kind(methodHandle m) {
- // Abstract method?
- if (m->is_abstract()) return abstract;
-
- // Method handle primitive?
- if (m->is_method_handle_intrinsic()) {
- vmIntrinsics::ID id = m->intrinsic_id();
- assert(MethodHandles::is_signature_polymorphic(id), "must match an intrinsic");
- MethodKind kind = (MethodKind)( method_handle_invoke_FIRST +
- ((int)id - vmIntrinsics::FIRST_MH_SIG_POLY) );
- assert(kind <= method_handle_invoke_LAST, "parallel enum ranges");
- return kind;
- }
-
-#ifndef CC_INTERP
- if (UseCRC32Intrinsics && m->is_native()) {
- // Use optimized stub code for CRC32 native methods.
- switch (m->intrinsic_id()) {
- case vmIntrinsics::_updateCRC32 : return java_util_zip_CRC32_update;
- case vmIntrinsics::_updateBytesCRC32 : return java_util_zip_CRC32_updateBytes;
- case vmIntrinsics::_updateByteBufferCRC32 : return java_util_zip_CRC32_updateByteBuffer;
- }
- }
- if (UseCRC32CIntrinsics) {
- // Use optimized stub code for CRC32C methods.
- switch (m->intrinsic_id()) {
- case vmIntrinsics::_updateBytesCRC32C : return java_util_zip_CRC32C_updateBytes;
- case vmIntrinsics::_updateDirectByteBufferCRC32C : return java_util_zip_CRC32C_updateDirectByteBuffer;
- }
- }
-
- switch(m->intrinsic_id()) {
- case vmIntrinsics::_intBitsToFloat: return java_lang_Float_intBitsToFloat;
- case vmIntrinsics::_floatToRawIntBits: return java_lang_Float_floatToRawIntBits;
- case vmIntrinsics::_longBitsToDouble: return java_lang_Double_longBitsToDouble;
- case vmIntrinsics::_doubleToRawLongBits: return java_lang_Double_doubleToRawLongBits;
- }
-
-#endif // CC_INTERP
-
- // Native method?
- // Note: This test must come _before_ the test for intrinsic
- // methods. See also comments below.
- if (m->is_native()) {
- assert(!m->is_method_handle_intrinsic(), "overlapping bits here, watch out");
- return m->is_synchronized() ? native_synchronized : native;
- }
-
- // Synchronized?
- if (m->is_synchronized()) {
- return zerolocals_synchronized;
- }
-
- if (RegisterFinalizersAtInit && m->code_size() == 1 &&
- m->intrinsic_id() == vmIntrinsics::_Object_init) {
- // We need to execute the special return bytecode to check for
- // finalizer registration so create a normal frame.
- return zerolocals;
- }
-
- // Empty method?
- if (m->is_empty_method()) {
- return empty;
- }
-
- // Special intrinsic method?
- // Note: This test must come _after_ the test for native methods,
- // otherwise we will run into problems with JDK 1.2, see also
- // TemplateInterpreterGenerator::generate_method_entry() for
- // for details.
- switch (m->intrinsic_id()) {
- case vmIntrinsics::_dsin : return java_lang_math_sin ;
- case vmIntrinsics::_dcos : return java_lang_math_cos ;
- case vmIntrinsics::_dtan : return java_lang_math_tan ;
- case vmIntrinsics::_dabs : return java_lang_math_abs ;
- case vmIntrinsics::_dsqrt : return java_lang_math_sqrt ;
- case vmIntrinsics::_dlog : return java_lang_math_log ;
- case vmIntrinsics::_dlog10: return java_lang_math_log10;
- case vmIntrinsics::_dpow : return java_lang_math_pow ;
- case vmIntrinsics::_dexp : return java_lang_math_exp ;
-
- case vmIntrinsics::_Reference_get:
- return java_lang_ref_reference_get;
- }
-
- // Accessor method?
- if (m->is_getter()) {
- // TODO: We should have used ::is_accessor above, but fast accessors in Zero expect only getters.
- // See CppInterpreter::accessor_entry in cppInterpreter_zero.cpp. This should be fixed in Zero,
- // then the call above updated to ::is_accessor
- assert(m->size_of_parameters() == 1, "fast code for accessors assumes parameter size = 1");
- return accessor;
- }
-
- // Note: for now: zero locals for all non-empty methods
- return zerolocals;
-}
-
-
-void AbstractInterpreter::set_entry_for_kind(AbstractInterpreter::MethodKind kind, address entry) {
- assert(kind >= method_handle_invoke_FIRST &&
- kind <= method_handle_invoke_LAST, "late initialization only for MH entry points");
- assert(_entry_table[kind] == _entry_table[abstract], "previous value must be AME entry");
- _entry_table[kind] = entry;
-}
-
-
-// Return true if the interpreter can prove that the given bytecode has
-// not yet been executed (in Java semantics, not in actual operation).
-bool AbstractInterpreter::is_not_reached(const methodHandle& method, int bci) {
- Bytecodes::Code code = method()->code_at(bci);
-
- if (!Bytecodes::must_rewrite(code)) {
- // might have been reached
- return false;
- }
-
- // the bytecode might not be rewritten if the method is an accessor, etc.
- address ientry = method->interpreter_entry();
- if (ientry != entry_for_kind(AbstractInterpreter::zerolocals) &&
- ientry != entry_for_kind(AbstractInterpreter::zerolocals_synchronized))
- return false; // interpreter does not run this method!
-
- // otherwise, we can be sure this bytecode has never been executed
- return true;
-}
-
-
-#ifndef PRODUCT
-void AbstractInterpreter::print_method_kind(MethodKind kind) {
- switch (kind) {
- case zerolocals : tty->print("zerolocals" ); break;
- case zerolocals_synchronized: tty->print("zerolocals_synchronized"); break;
- case native : tty->print("native" ); break;
- case native_synchronized : tty->print("native_synchronized" ); break;
- case empty : tty->print("empty" ); break;
- case accessor : tty->print("accessor" ); break;
- case abstract : tty->print("abstract" ); break;
- case java_lang_math_sin : tty->print("java_lang_math_sin" ); break;
- case java_lang_math_cos : tty->print("java_lang_math_cos" ); break;
- case java_lang_math_tan : tty->print("java_lang_math_tan" ); break;
- case java_lang_math_abs : tty->print("java_lang_math_abs" ); break;
- case java_lang_math_sqrt : tty->print("java_lang_math_sqrt" ); break;
- case java_lang_math_log : tty->print("java_lang_math_log" ); break;
- case java_lang_math_log10 : tty->print("java_lang_math_log10" ); break;
- case java_util_zip_CRC32_update : tty->print("java_util_zip_CRC32_update"); break;
- case java_util_zip_CRC32_updateBytes : tty->print("java_util_zip_CRC32_updateBytes"); break;
- case java_util_zip_CRC32_updateByteBuffer : tty->print("java_util_zip_CRC32_updateByteBuffer"); break;
- case java_util_zip_CRC32C_updateBytes : tty->print("java_util_zip_CRC32C_updateBytes"); break;
- case java_util_zip_CRC32C_updateDirectByteBuffer: tty->print("java_util_zip_CRC32C_updateDirectByteByffer"); break;
- default:
- if (kind >= method_handle_invoke_FIRST &&
- kind <= method_handle_invoke_LAST) {
- const char* kind_name = vmIntrinsics::name_at(method_handle_intrinsic(kind));
- if (kind_name[0] == '_') kind_name = &kind_name[1]; // '_invokeExact' => 'invokeExact'
- tty->print("method_handle_%s", kind_name);
- break;
- }
- ShouldNotReachHere();
- break;
- }
-}
-#endif // PRODUCT
-
-
-//------------------------------------------------------------------------------------------------------------------------
-// Deoptimization support
-
-/**
- * If a deoptimization happens, this function returns the point of next bytecode to continue execution.
- */
-address AbstractInterpreter::deopt_continue_after_entry(Method* method, address bcp, int callee_parameters, bool is_top_frame) {
- assert(method->contains(bcp), "just checkin'");
-
- // Get the original and rewritten bytecode.
- Bytecodes::Code code = Bytecodes::java_code_at(method, bcp);
- assert(!Interpreter::bytecode_should_reexecute(code), "should not reexecute");
-
- const int bci = method->bci_from(bcp);
-
- // compute continuation length
- const int length = Bytecodes::length_at(method, bcp);
-
- // compute result type
- BasicType type = T_ILLEGAL;
-
- switch (code) {
- case Bytecodes::_invokevirtual :
- case Bytecodes::_invokespecial :
- case Bytecodes::_invokestatic :
- case Bytecodes::_invokeinterface: {
- Thread *thread = Thread::current();
- ResourceMark rm(thread);
- methodHandle mh(thread, method);
- type = Bytecode_invoke(mh, bci).result_type();
- // since the cache entry might not be initialized:
- // (NOT needed for the old calling convension)
- if (!is_top_frame) {
- int index = Bytes::get_native_u2(bcp+1);
- method->constants()->cache()->entry_at(index)->set_parameter_size(callee_parameters);
- }
- break;
- }
-
- case Bytecodes::_invokedynamic: {
- Thread *thread = Thread::current();
- ResourceMark rm(thread);
- methodHandle mh(thread, method);
- type = Bytecode_invoke(mh, bci).result_type();
- // since the cache entry might not be initialized:
- // (NOT needed for the old calling convension)
- if (!is_top_frame) {
- int index = Bytes::get_native_u4(bcp+1);
- method->constants()->invokedynamic_cp_cache_entry_at(index)->set_parameter_size(callee_parameters);
- }
- break;
- }
-
- case Bytecodes::_ldc :
- case Bytecodes::_ldc_w : // fall through
- case Bytecodes::_ldc2_w:
- {
- Thread *thread = Thread::current();
- ResourceMark rm(thread);
- methodHandle mh(thread, method);
- type = Bytecode_loadconstant(mh, bci).result_type();
- break;
- }
-
- default:
- type = Bytecodes::result_type(code);
- break;
- }
-
- // return entry point for computed continuation state & bytecode length
- return
- is_top_frame
- ? Interpreter::deopt_entry (as_TosState(type), length)
- : Interpreter::return_entry(as_TosState(type), length, code);
-}
-
-// If deoptimization happens, this function returns the point where the interpreter reexecutes
-// the bytecode.
-// Note: Bytecodes::_athrow is a special case in that it does not return
-// Interpreter::deopt_entry(vtos, 0) like others
-address AbstractInterpreter::deopt_reexecute_entry(Method* method, address bcp) {
- assert(method->contains(bcp), "just checkin'");
- Bytecodes::Code code = Bytecodes::java_code_at(method, bcp);
-#if defined(COMPILER1) || INCLUDE_JVMCI
- if(code == Bytecodes::_athrow ) {
- return Interpreter::rethrow_exception_entry();
- }
-#endif /* COMPILER1 || INCLUDE_JVMCI */
- return Interpreter::deopt_entry(vtos, 0);
-}
-
-// If deoptimization happens, the interpreter should reexecute these bytecodes.
-// This function mainly helps the compilers to set up the reexecute bit.
-bool AbstractInterpreter::bytecode_should_reexecute(Bytecodes::Code code) {
- switch (code) {
- case Bytecodes::_lookupswitch:
- case Bytecodes::_tableswitch:
- case Bytecodes::_fast_binaryswitch:
- case Bytecodes::_fast_linearswitch:
- // recompute condtional expression folded into _if<cond>
- case Bytecodes::_lcmp :
- case Bytecodes::_fcmpl :
- case Bytecodes::_fcmpg :
- case Bytecodes::_dcmpl :
- case Bytecodes::_dcmpg :
- case Bytecodes::_ifnull :
- case Bytecodes::_ifnonnull :
- case Bytecodes::_goto :
- case Bytecodes::_goto_w :
- case Bytecodes::_ifeq :
- case Bytecodes::_ifne :
- case Bytecodes::_iflt :
- case Bytecodes::_ifge :
- case Bytecodes::_ifgt :
- case Bytecodes::_ifle :
- case Bytecodes::_if_icmpeq :
- case Bytecodes::_if_icmpne :
- case Bytecodes::_if_icmplt :
- case Bytecodes::_if_icmpge :
- case Bytecodes::_if_icmpgt :
- case Bytecodes::_if_icmple :
- case Bytecodes::_if_acmpeq :
- case Bytecodes::_if_acmpne :
- // special cases
- case Bytecodes::_getfield :
- case Bytecodes::_putfield :
- case Bytecodes::_getstatic :
- case Bytecodes::_putstatic :
- case Bytecodes::_aastore :
-#ifdef COMPILER1
- //special case of reexecution
- case Bytecodes::_athrow :
-#endif
- return true;
-
- default:
- return false;
- }
-}
-
-void AbstractInterpreterGenerator::bang_stack_shadow_pages(bool native_call) {
- // Quick & dirty stack overflow checking: bang the stack & handle trap.
- // Note that we do the banging after the frame is setup, since the exception
- // handling code expects to find a valid interpreter frame on the stack.
- // Doing the banging earlier fails if the caller frame is not an interpreter
- // frame.
- // (Also, the exception throwing code expects to unlock any synchronized
- // method receiever, so do the banging after locking the receiver.)
-
- // Bang each page in the shadow zone. We can't assume it's been done for
- // an interpreter frame with greater than a page of locals, so each page
- // needs to be checked. Only true for non-native.
- if (UseStackBanging) {
- const int page_size = os::vm_page_size();
- const int n_shadow_pages = ((int)JavaThread::stack_shadow_zone_size()) / page_size;
- const int start_page = native_call ? n_shadow_pages : 1;
- for (int pages = start_page; pages <= n_shadow_pages; pages++) {
- __ bang_stack_with_offset(pages*page_size);
- }
- }
-}
-
-void AbstractInterpreterGenerator::initialize_method_handle_entries() {
- // method handle entry kinds are generated later in MethodHandlesAdapterGenerator::generate:
- for (int i = Interpreter::method_handle_invoke_FIRST; i <= Interpreter::method_handle_invoke_LAST; i++) {
- Interpreter::MethodKind kind = (Interpreter::MethodKind) i;
- Interpreter::_entry_table[kind] = Interpreter::_entry_table[Interpreter::abstract];
- }
-}
< prev index next >