Mercurial > hg > graal-compiler
view src/share/vm/interpreter/interpreter.cpp @ 1091:6aa7255741f3
6906727: UseCompressedOops: some card-marking fixes related to object arrays
Summary: Introduced a new write_ref_array(HeapWords* start, size_t count) method that does the requisite MemRegion range calculation so (some of the) clients of the erstwhile write_ref_array(MemRegion mr) do not need to worry. This removed all external uses of array_size(), which was also simplified and made private. Asserts were added to catch other possible issues. Further, less essential, fixes stemming from this investigation are deferred to CR 6904516 (to follow shortly in hs17).
Reviewed-by: kvn, coleenp, jmasa
author | ysr |
---|---|
date | Thu, 03 Dec 2009 15:01:57 -0800 |
parents | 9987d9d5eb0e |
children | 389049f3f393 |
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/* * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ #include "incls/_precompiled.incl" #include "incls/_interpreter.cpp.incl" # define __ _masm-> //------------------------------------------------------------------------------------------------------------------------ // Implementation of InterpreterCodelet void InterpreterCodelet::initialize(const char* description, Bytecodes::Code bytecode) { _description = description; _bytecode = bytecode; } void InterpreterCodelet::verify() { } void InterpreterCodelet::print() { if (PrintInterpreter) { tty->cr(); tty->print_cr("----------------------------------------------------------------------"); } if (description() != NULL) tty->print("%s ", description()); if (bytecode() >= 0 ) tty->print("%d %s ", bytecode(), Bytecodes::name(bytecode())); tty->print_cr("[" INTPTR_FORMAT ", " INTPTR_FORMAT "] %d bytes", code_begin(), code_end(), code_size()); if (PrintInterpreter) { tty->cr(); Disassembler::decode(code_begin(), code_end(), tty); } } //------------------------------------------------------------------------------------------------------------------------ // 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()); 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()); #endif // PRODUCT // need to hit every safepoint in order to call zapping routine // register the interpreter VTune::register_stub( "Interpreter", AbstractInterpreter::code()->code_start(), AbstractInterpreter::code()->code_end() ); Forte::register_stub( "Interpreter", AbstractInterpreter::code()->code_start(), AbstractInterpreter::code()->code_end() ); // notify JVMTI profiler if (JvmtiExport::should_post_dynamic_code_generated()) { 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; // Invoker for method handles? if (m->is_method_handle_invoke()) return method_handle; // 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_invoke(), "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; } // Accessor method? if (m->is_accessor()) { assert(m->size_of_parameters() == 1, "fast code for accessors assumes parameter size = 1"); return accessor; } // 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 // AbstractInterpreterGenerator::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; } // Note: for now: zero locals for all non-empty methods return zerolocals; } // 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(methodHandle method, int bci) { address bcp = method->bcp_from(bci); if (!Bytecode_at(bcp)->must_rewrite()) { // 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 method_handle : tty->print("method_handle" ); 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; default : ShouldNotReachHere(); } } #endif // PRODUCT static BasicType constant_pool_type(methodOop method, int index) { constantTag tag = method->constants()->tag_at(index); if (tag.is_int ()) return T_INT; else if (tag.is_float ()) return T_FLOAT; else if (tag.is_long ()) return T_LONG; else if (tag.is_double ()) return T_DOUBLE; else if (tag.is_string ()) return T_OBJECT; else if (tag.is_unresolved_string()) return T_OBJECT; else if (tag.is_klass ()) return T_OBJECT; else if (tag.is_unresolved_klass ()) return T_OBJECT; ShouldNotReachHere(); return T_ILLEGAL; } //------------------------------------------------------------------------------------------------------------------------ // Deoptimization support // If deoptimization happens, this function returns the point of next bytecode to continue execution address AbstractInterpreter::deopt_continue_after_entry(methodOop method, address bcp, int callee_parameters, bool is_top_frame) { assert(method->contains(bcp), "just checkin'"); Bytecodes::Code code = Bytecodes::java_code_at(bcp); assert(!Interpreter::bytecode_should_reexecute(code), "should not reexecute"); int bci = method->bci_from(bcp); int length = -1; // initial value for debugging // compute continuation length length = Bytecodes::length_at(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_at(mh, bci)->result_type(thread); // 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::_ldc : type = constant_pool_type( method, *(bcp+1) ); break; case Bytecodes::_ldc_w : // fall through case Bytecodes::_ldc2_w: type = constant_pool_type( method, Bytes::get_Java_u2(bcp+1) ); 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); } // 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(methodOop method, address bcp) { assert(method->contains(bcp), "just checkin'"); Bytecodes::Code code = Bytecodes::java_code_at(bcp); #ifdef COMPILER1 if(code == Bytecodes::_athrow ) { return Interpreter::rethrow_exception_entry(); } #endif /* COMPILER1 */ 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 start_page = native_call ? StackShadowPages : 1; const int page_size = os::vm_page_size(); for (int pages = start_page; pages <= StackShadowPages ; pages++) { __ bang_stack_with_offset(pages*page_size); } } }