Mercurial > hg > graal-jvmci-8
view src/share/vm/interpreter/abstractInterpreter.hpp @ 3979:4dfb2df418f2
6484982: G1: process references during evacuation pauses
Summary: G1 now uses two reference processors - one is used by concurrent marking and the other is used by STW GCs (both full and incremental evacuation pauses). In an evacuation pause, the reference processor is embedded into the closures used to scan objects. Doing so causes causes reference objects to be 'discovered' by the reference processor. At the end of the evacuation pause, these discovered reference objects are processed - preserving (and copying) referent objects (and their reachable graphs) as appropriate.
Reviewed-by: ysr, jwilhelm, brutisso, stefank, tonyp
author | johnc |
---|---|
date | Thu, 22 Sep 2011 10:57:37 -0700 |
parents | 3d2ab563047a |
children | f08d439fab8c |
line wrap: on
line source
/* * Copyright (c) 1997, 2011, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP #define SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP #include "code/stubs.hpp" #include "interpreter/bytecodes.hpp" #include "runtime/vmThread.hpp" #include "utilities/top.hpp" #ifdef TARGET_ARCH_MODEL_x86_32 # include "interp_masm_x86_32.hpp" #endif #ifdef TARGET_ARCH_MODEL_x86_64 # include "interp_masm_x86_64.hpp" #endif #ifdef TARGET_ARCH_MODEL_sparc # include "interp_masm_sparc.hpp" #endif #ifdef TARGET_ARCH_MODEL_zero # include "interp_masm_zero.hpp" #endif #ifdef TARGET_ARCH_MODEL_arm # include "interp_masm_arm.hpp" #endif #ifdef TARGET_ARCH_MODEL_ppc # include "interp_masm_ppc.hpp" #endif #ifdef TARGET_OS_FAMILY_linux # include "thread_linux.inline.hpp" #endif #ifdef TARGET_OS_FAMILY_solaris # include "thread_solaris.inline.hpp" #endif #ifdef TARGET_OS_FAMILY_windows # include "thread_windows.inline.hpp" #endif // This file contains the platform-independent parts // of the abstract interpreter and the abstract interpreter generator. // Organization of the interpreter(s). There exists two different interpreters in hotpot // an assembly language version (aka template interpreter) and a high level language version // (aka c++ interpreter). Th division of labor is as follows: // Template Interpreter C++ Interpreter Functionality // // templateTable* bytecodeInterpreter* actual interpretation of bytecodes // // templateInterpreter* cppInterpreter* generation of assembly code that creates // and manages interpreter runtime frames. // Also code for populating interpreter // frames created during deoptimization. // // For both template and c++ interpreter. There are common files for aspects of the interpreter // that are generic to both interpreters. This is the layout: // // abstractInterpreter.hpp: generic description of the interpreter. // interpreter*: generic frame creation and handling. // //------------------------------------------------------------------------------------------------------------------------ // The C++ interface to the bytecode interpreter(s). class AbstractInterpreter: AllStatic { friend class VMStructs; friend class Interpreter; friend class CppInterpreterGenerator; public: enum MethodKind { zerolocals, // method needs locals initialization zerolocals_synchronized, // method needs locals initialization & is synchronized native, // native method native_synchronized, // native method & is synchronized empty, // empty method (code: _return) accessor, // accessor method (code: _aload_0, _getfield, _(a|i)return) abstract, // abstract method (throws an AbstractMethodException) method_handle, // java.lang.invoke.MethodHandles::invoke java_lang_math_sin, // implementation of java.lang.Math.sin (x) java_lang_math_cos, // implementation of java.lang.Math.cos (x) java_lang_math_tan, // implementation of java.lang.Math.tan (x) java_lang_math_abs, // implementation of java.lang.Math.abs (x) java_lang_math_sqrt, // implementation of java.lang.Math.sqrt (x) java_lang_math_log, // implementation of java.lang.Math.log (x) java_lang_math_log10, // implementation of java.lang.Math.log10 (x) java_lang_ref_reference_get, // implementation of java.lang.ref.Reference.get() number_of_method_entries, invalid = -1 }; enum SomeConstants { number_of_result_handlers = 10 // number of result handlers for native calls }; protected: static StubQueue* _code; // the interpreter code (codelets) static bool _notice_safepoints; // true if safepoints are activated static address _native_entry_begin; // Region for native entry code static address _native_entry_end; // method entry points static address _entry_table[number_of_method_entries]; // entry points for a given method static address _native_abi_to_tosca[number_of_result_handlers]; // for native method result handlers static address _slow_signature_handler; // the native method generic (slow) signature handler static address _rethrow_exception_entry; // rethrows an activation in previous frame friend class AbstractInterpreterGenerator; friend class InterpreterGenerator; friend class InterpreterMacroAssembler; public: // Initialization/debugging static void initialize(); static StubQueue* code() { return _code; } // Method activation static MethodKind method_kind(methodHandle m); static address entry_for_kind(MethodKind k) { assert(0 <= k && k < number_of_method_entries, "illegal kind"); return _entry_table[k]; } static address entry_for_method(methodHandle m) { return entry_for_kind(method_kind(m)); } static void print_method_kind(MethodKind kind) PRODUCT_RETURN; static bool can_be_compiled(methodHandle m); // Runtime support // length = invoke bytecode length (to advance to next bytecode) static address deopt_entry (TosState state, int length) { ShouldNotReachHere(); return NULL; } static address return_entry (TosState state, int length) { ShouldNotReachHere(); return NULL; } static address rethrow_exception_entry() { return _rethrow_exception_entry; } // Activation size in words for a method that is just being called. // Parameters haven't been pushed so count them too. static int size_top_interpreter_activation(methodOop method); // Deoptimization support // Compute the entry address for continuation after static address deopt_continue_after_entry(methodOop method, address bcp, int callee_parameters, bool is_top_frame); // Compute the entry address for reexecution static address deopt_reexecute_entry(methodOop method, address bcp); // Deoptimization should reexecute this bytecode static bool bytecode_should_reexecute(Bytecodes::Code code); // share implementation of size_activation and layout_activation: static int size_activation(methodOop method, int temps, int popframe_args, int monitors, int caller_actual_parameters, int callee_params, int callee_locals, bool is_top_frame) { return layout_activation(method, temps, popframe_args, monitors, caller_actual_parameters, callee_params, callee_locals, (frame*)NULL, (frame*)NULL, is_top_frame); } static int layout_activation(methodOop method, int temps, int popframe_args, int monitors, int caller_actual_parameters, int callee_params, int callee_locals, frame* caller, frame* interpreter_frame, bool is_top_frame); // Runtime support static bool is_not_reached( methodHandle method, int bci); // Safepoint support static void notice_safepoints() { ShouldNotReachHere(); } // stops the thread when reaching a safepoint static void ignore_safepoints() { ShouldNotReachHere(); } // ignores safepoints // Support for native calls static address slow_signature_handler() { return _slow_signature_handler; } static address result_handler(BasicType type) { return _native_abi_to_tosca[BasicType_as_index(type)]; } static int BasicType_as_index(BasicType type); // computes index into result_handler_by_index table static bool in_native_entry(address pc) { return _native_entry_begin <= pc && pc < _native_entry_end; } // Debugging/printing static void print(); // prints the interpreter code public: // Interpreter helpers const static int stackElementWords = 1; const static int stackElementSize = stackElementWords * wordSize; const static int logStackElementSize = LogBytesPerWord; // Local values relative to locals[n] static int local_offset_in_bytes(int n) { return ((frame::interpreter_frame_expression_stack_direction() * n) * stackElementSize); } // access to stacked values according to type: static oop* oop_addr_in_slot(intptr_t* slot_addr) { return (oop*) slot_addr; } static jint* int_addr_in_slot(intptr_t* slot_addr) { if ((int) sizeof(jint) < wordSize && !Bytes::is_Java_byte_ordering_different()) // big-endian LP64 return (jint*)(slot_addr + 1) - 1; else return (jint*) slot_addr; } static jlong long_in_slot(intptr_t* slot_addr) { if (sizeof(intptr_t) >= sizeof(jlong)) { return *(jlong*) slot_addr; } else { return Bytes::get_native_u8((address)slot_addr); } } static void set_long_in_slot(intptr_t* slot_addr, jlong value) { if (sizeof(intptr_t) >= sizeof(jlong)) { *(jlong*) slot_addr = value; } else { Bytes::put_native_u8((address)slot_addr, value); } } static void get_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) { switch (type) { case T_BOOLEAN: value->z = *int_addr_in_slot(slot_addr); break; case T_CHAR: value->c = *int_addr_in_slot(slot_addr); break; case T_BYTE: value->b = *int_addr_in_slot(slot_addr); break; case T_SHORT: value->s = *int_addr_in_slot(slot_addr); break; case T_INT: value->i = *int_addr_in_slot(slot_addr); break; case T_LONG: value->j = long_in_slot(slot_addr); break; case T_FLOAT: value->f = *(jfloat*)int_addr_in_slot(slot_addr); break; case T_DOUBLE: value->d = jdouble_cast(long_in_slot(slot_addr)); break; case T_OBJECT: value->l = (jobject)*oop_addr_in_slot(slot_addr); break; default: ShouldNotReachHere(); } } static void set_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) { switch (type) { case T_BOOLEAN: *int_addr_in_slot(slot_addr) = (value->z != 0); break; case T_CHAR: *int_addr_in_slot(slot_addr) = value->c; break; case T_BYTE: *int_addr_in_slot(slot_addr) = value->b; break; case T_SHORT: *int_addr_in_slot(slot_addr) = value->s; break; case T_INT: *int_addr_in_slot(slot_addr) = value->i; break; case T_LONG: set_long_in_slot(slot_addr, value->j); break; case T_FLOAT: *(jfloat*)int_addr_in_slot(slot_addr) = value->f; break; case T_DOUBLE: set_long_in_slot(slot_addr, jlong_cast(value->d)); break; case T_OBJECT: *oop_addr_in_slot(slot_addr) = (oop) value->l; break; default: ShouldNotReachHere(); } } }; //------------------------------------------------------------------------------------------------------------------------ // The interpreter generator. class Template; class AbstractInterpreterGenerator: public StackObj { protected: InterpreterMacroAssembler* _masm; // shared code sequences // Converter for native abi result to tosca result address generate_result_handler_for(BasicType type); address generate_slow_signature_handler(); // entry point generator address generate_method_entry(AbstractInterpreter::MethodKind kind); void bang_stack_shadow_pages(bool native_call); void generate_all(); public: AbstractInterpreterGenerator(StubQueue* _code); }; #endif // SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP