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src/share/vm/runtime/vframe_hp.hpp@91ddc23482a4 (annotated)

src/share/vm/runtime/vframe_hp.hpp

Thu, 24 May 2018 20:03:11 +0800

author

aoqi

date

Thu, 24 May 2018 20:03:11 +0800

changeset 8868

91ddc23482a4

parent 6876

710a3c8b516e

permissions

-rw-r--r--

Increase MaxHeapSize for better performance on MIPS

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	#ifndef SHARE_VM_RUNTIME_VFRAME_HP_HPP
aoqi@0	26	#define SHARE_VM_RUNTIME_VFRAME_HP_HPP
aoqi@0	27
aoqi@0	28	#include "runtime/vframe.hpp"
aoqi@0	29
aoqi@0	30	class compiledVFrame: public javaVFrame {
aoqi@0	31	public:
aoqi@0	32	// JVM state
aoqi@0	33	Method* method() const;
aoqi@0	34	int bci() const;
aoqi@0	35	bool should_reexecute() const;
aoqi@0	36	StackValueCollection* locals() const;
aoqi@0	37	StackValueCollection* expressions() const;
aoqi@0	38	GrowableArray<MonitorInfo*>* monitors() const;
aoqi@0	39
aoqi@0	40	void set_locals(StackValueCollection* values) const;
aoqi@0	41
aoqi@0	42	// Virtuals defined in vframe
aoqi@0	43	bool is_compiled_frame() const { return true; }
aoqi@0	44	vframe* sender() const;
aoqi@0	45	bool is_top() const;
aoqi@0	46
aoqi@0	47	// Casting
aoqi@0	48	static compiledVFrame* cast(vframe* vf) {
aoqi@0	49	assert(vf == NULL || vf->is_compiled_frame(), "must be compiled frame");
aoqi@0	50	return (compiledVFrame*) vf;
aoqi@0	51	}
aoqi@0	52
aoqi@0	53	public:
aoqi@0	54	// Constructors
aoqi@0	55	compiledVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread, nmethod* nm);
aoqi@0	56
aoqi@0	57	// Update a local in a compiled frame. Update happens when deopt occurs
aoqi@0	58	void update_local(BasicType type, int index, jvalue value);
aoqi@0	59
aoqi@0	60	// Returns the active nmethod
aoqi@0	61	nmethod* code() const;
aoqi@0	62
aoqi@0	63	// Returns the scopeDesc
aoqi@0	64	ScopeDesc* scope() const { return _scope; }
aoqi@0	65
aoqi@0	66	// Returns SynchronizationEntryBCI or bci() (used for synchronization)
aoqi@0	67	int raw_bci() const;
aoqi@0	68
aoqi@0	69	protected:
aoqi@0	70	ScopeDesc* _scope;
aoqi@0	71
aoqi@0	72
aoqi@0	73	//StackValue resolve(ScopeValue* sv) const;
aoqi@0	74	BasicLock* resolve_monitor_lock(Location location) const;
aoqi@0	75	StackValue *create_stack_value(ScopeValue *sv) const;
aoqi@0	76
aoqi@0	77	private:
aoqi@0	78	compiledVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread, ScopeDesc* scope);
aoqi@0	79
aoqi@0	80	#ifndef PRODUCT
aoqi@0	81	public:
aoqi@0	82	void verify() const;
aoqi@0	83	#endif
aoqi@0	84	};
aoqi@0	85
aoqi@0	86	// In order to implement set_locals for compiled vframes we must
aoqi@0	87	// store updated locals in a data structure that contains enough
aoqi@0	88	// information to recognize equality with a vframe and to store
aoqi@0	89	// any updated locals.
aoqi@0	90
aoqi@0	91	class jvmtiDeferredLocalVariable;
aoqi@0	92	class jvmtiDeferredLocalVariableSet : public CHeapObj<mtCompiler> {
aoqi@0	93	private:
aoqi@0	94
aoqi@0	95	Method* _method;
aoqi@0	96	int _bci;
aoqi@0	97	intptr_t* _id;
aoqi@0	98	GrowableArray<jvmtiDeferredLocalVariable*>* _locals;
aoqi@0	99
aoqi@0	100	public:
aoqi@0	101	// JVM state
aoqi@0	102	Method* method() const { return _method; }
aoqi@0	103	int bci() const { return _bci; }
aoqi@0	104	intptr_t* id() const { return _id; }
aoqi@0	105	GrowableArray<jvmtiDeferredLocalVariable*>* locals() const { return _locals; }
aoqi@0	106	void set_local_at(int idx, BasicType typ, jvalue val);
aoqi@0	107
aoqi@0	108	// Does the vframe match this jvmtiDeferredLocalVariableSet
aoqi@0	109	bool matches(vframe* vf);
aoqi@0	110	// GC
aoqi@0	111	void oops_do(OopClosure* f);
aoqi@0	112
aoqi@0	113	// constructor
aoqi@0	114	jvmtiDeferredLocalVariableSet(Method* method, int bci, intptr_t* id);
aoqi@0	115
aoqi@0	116	// destructor
aoqi@0	117	~jvmtiDeferredLocalVariableSet();
aoqi@0	118
aoqi@0	119
aoqi@0	120	};
aoqi@0	121
aoqi@0	122	class jvmtiDeferredLocalVariable : public CHeapObj<mtCompiler> {
aoqi@0	123	public:
aoqi@0	124
aoqi@0	125	jvmtiDeferredLocalVariable(int index, BasicType type, jvalue value);
aoqi@0	126
aoqi@0	127	BasicType type(void) { return _type; }
aoqi@0	128	int index(void) { return _index; }
aoqi@0	129	jvalue value(void) { return _value; }
aoqi@0	130	// Only mutator is for value as only it can change
aoqi@0	131	void set_value(jvalue value) { _value = value; }
aoqi@0	132	// For gc
aoqi@0	133	oop* oop_addr(void) { return (oop*) &_value.l; }
aoqi@0	134
aoqi@0	135	private:
aoqi@0	136
aoqi@0	137	BasicType _type;
aoqi@0	138	jvalue _value;
aoqi@0	139	int _index;
aoqi@0	140
aoqi@0	141	};
aoqi@0	142
aoqi@0	143	#endif // SHARE_VM_RUNTIME_VFRAME_HP_HPP