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src/share/vm/runtime/javaCalls.hpp@fb57d4cf76c2 (annotated)

src/share/vm/runtime/javaCalls.hpp

Tue, 11 May 2010 14:35:43 -0700

author

prr

date

Tue, 11 May 2010 14:35:43 -0700

changeset 1840

fb57d4cf76c2

parent 905

ad8c8ca4ab0f

child 1861

2338d41fbd81

permissions

-rw-r--r--

6931180: Migration to recent versions of MS Platform SDK
6951582: Build problems on win64
Summary: Changes to enable building JDK7 with Microsoft Visual Studio 2010
Reviewed-by: ohair, art, ccheung, dcubed

duke@435	1	/*
xdono@905	2	* Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	// A JavaCallWrapper is constructed before each JavaCall and destructed after the call.
duke@435	26	// Its purpose is to allocate/deallocate a new handle block and to save/restore the last
duke@435	27	// Java fp/sp. A pointer to the JavaCallWrapper is stored on the stack.
duke@435	28
duke@435	29	class JavaCallWrapper: StackObj {
duke@435	30	friend class VMStructs;
duke@435	31	private:
duke@435	32	JavaThread* _thread; // the thread to which this call belongs
duke@435	33	JNIHandleBlock* _handles; // the saved handle block
duke@435	34	methodOop _callee_method; // to be able to collect arguments if entry frame is top frame
duke@435	35	oop _receiver; // the receiver of the call (if a non-static call)
duke@435	36
duke@435	37	JavaFrameAnchor _anchor; // last thread anchor state that we must restore
duke@435	38
duke@435	39	JavaValue* _result; // result value
duke@435	40
duke@435	41	public:
duke@435	42	// Construction/destruction
duke@435	43	JavaCallWrapper(methodHandle callee_method, Handle receiver, JavaValue* result, TRAPS);
duke@435	44	~JavaCallWrapper();
duke@435	45
duke@435	46	// Accessors
duke@435	47	JavaThread* thread() const { return _thread; }
duke@435	48	JNIHandleBlock* handles() const { return _handles; }
duke@435	49
duke@435	50	JavaFrameAnchor* anchor(void) { return &_anchor; }
duke@435	51
duke@435	52	JavaValue* result() const { return _result; }
duke@435	53	// GC support
duke@435	54	methodOop callee_method() { return _callee_method; }
duke@435	55	oop receiver() { return _receiver; }
duke@435	56	void oops_do(OopClosure* f);
duke@435	57
duke@435	58	};
duke@435	59
duke@435	60
duke@435	61	// Encapsulates arguments to a JavaCall (faster, safer, and more convenient than using var-args)
duke@435	62	class JavaCallArguments : public StackObj {
duke@435	63	private:
duke@435	64	enum Constants {
duke@435	65	_default_size = 8 // Must be at least # of arguments in JavaCalls methods
duke@435	66	};
duke@435	67
duke@435	68	intptr_t _value_buffer [_default_size + 1];
duke@435	69	intptr_t _parameter_buffer [_default_size*2 + 1];
duke@435	70	bool _is_oop_buffer[_default_size + 1];
duke@435	71
duke@435	72	intptr_t* _value;
duke@435	73	intptr_t* _parameters;
duke@435	74	bool* _is_oop;
duke@435	75	int _size;
duke@435	76	int _max_size;
duke@435	77	bool _start_at_zero; // Support late setting of receiver
duke@435	78
duke@435	79	void initialize() {
duke@435	80	// Starts at first element to support set_receiver.
duke@435	81	_value = &_value_buffer[1];
duke@435	82	_is_oop = &_is_oop_buffer[1];
duke@435	83
duke@435	84	_parameters = &_parameter_buffer[0];
duke@435	85	_max_size = _default_size;
duke@435	86	_size = 0;
duke@435	87	_start_at_zero = false;
duke@435	88	}
duke@435	89
duke@435	90	public:
duke@435	91	JavaCallArguments() { initialize(); }
duke@435	92
duke@435	93	JavaCallArguments(Handle receiver) {
duke@435	94	initialize();
duke@435	95	push_oop(receiver);
duke@435	96	}
duke@435	97
duke@435	98	JavaCallArguments(int max_size) {
duke@435	99	if (max_size > _default_size) {
duke@435	100	_value = NEW_RESOURCE_ARRAY(intptr_t, max_size + 1);
duke@435	101	_is_oop = NEW_RESOURCE_ARRAY(bool, max_size + 1);
duke@435	102	if (TaggedStackInterpreter) {
duke@435	103	_parameters = NEW_RESOURCE_ARRAY(intptr_t, max_size*2 + 1);
duke@435	104	}
duke@435	105	// Reserve room for potential receiver in value and is_oop
duke@435	106	_value++; _is_oop++;
duke@435	107	_max_size = max_size;
duke@435	108	_size = 0;
duke@435	109	_start_at_zero = false;
duke@435	110	} else {
duke@435	111	initialize();
duke@435	112	}
duke@435	113	}
duke@435	114
duke@435	115	inline void push_oop(Handle h) { _is_oop[_size] = true;
duke@435	116	JNITypes::put_obj((oop)h.raw_value(), _value, _size); }
duke@435	117
duke@435	118	inline void push_int(int i) { _is_oop[_size] = false;
duke@435	119	JNITypes::put_int(i, _value, _size); }
duke@435	120
duke@435	121	inline void push_double(double d) { _is_oop[_size] = false; _is_oop[_size + 1] = false;
duke@435	122	JNITypes::put_double(d, _value, _size); }
duke@435	123
duke@435	124	inline void push_long(jlong l) { _is_oop[_size] = false; _is_oop[_size + 1] = false;
duke@435	125	JNITypes::put_long(l, _value, _size); }
duke@435	126
duke@435	127	inline void push_float(float f) { _is_oop[_size] = false;
duke@435	128	JNITypes::put_float(f, _value, _size); }
duke@435	129
duke@435	130	// receiver
duke@435	131	Handle receiver() {
duke@435	132	assert(_size > 0, "must at least be one argument");
duke@435	133	assert(_is_oop[0], "first argument must be an oop");
duke@435	134	assert(_value[0] != 0, "receiver must be not-null");
duke@435	135	return Handle((oop*)_value[0], false);
duke@435	136	}
duke@435	137
duke@435	138	void set_receiver(Handle h) {
duke@435	139	assert(_start_at_zero == false, "can only be called once");
duke@435	140	_start_at_zero = true;
duke@435	141	_is_oop--;
duke@435	142	_value--;
duke@435	143	_size++;
duke@435	144	_is_oop[0] = true;
duke@435	145	_value[0] = (intptr_t)h.raw_value();
duke@435	146	}
duke@435	147
duke@435	148	// Converts all Handles to oops, and returns a reference to parameter vector
duke@435	149	intptr_t* parameters() ;
duke@435	150	int size_of_parameters() const { return _size; }
duke@435	151
duke@435	152	// Verify that pushed arguments fits a given method
poonam@900	153	void verify(methodHandle method, BasicType return_type, Thread *thread);
duke@435	154	};
duke@435	155
duke@435	156	// All calls to Java have to go via JavaCalls. Sets up the stack frame
duke@435	157	// and makes sure that the last_Java_frame pointers are chained correctly.
duke@435	158	//
duke@435	159
duke@435	160	class JavaCalls: AllStatic {
duke@435	161	static void call_helper(JavaValue* result, methodHandle* method, JavaCallArguments* args, TRAPS);
duke@435	162	public:
duke@435	163	// Optimized Constuctor call
duke@435	164	static void call_default_constructor(JavaThread* thread, methodHandle method, Handle receiver, TRAPS);
duke@435	165
duke@435	166	// call_special
duke@435	167	// ------------
duke@435	168	// The receiver must be first oop in argument list
duke@435	169	static void call_special(JavaValue* result, KlassHandle klass, symbolHandle name, symbolHandle signature, JavaCallArguments* args, TRAPS);
duke@435	170
duke@435	171	static void call_special(JavaValue* result, Handle receiver, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS); // No args
duke@435	172	static void call_special(JavaValue* result, Handle receiver, KlassHandle klass, symbolHandle name, symbolHandle signature, Handle arg1, TRAPS);
duke@435	173	static void call_special(JavaValue* result, Handle receiver, KlassHandle klass, symbolHandle name, symbolHandle signature, Handle arg1, Handle arg2, TRAPS);
duke@435	174
duke@435	175	// virtual call
duke@435	176	// ------------
duke@435	177
duke@435	178	// The receiver must be first oop in argument list
duke@435	179	static void call_virtual(JavaValue* result, KlassHandle spec_klass, symbolHandle name, symbolHandle signature, JavaCallArguments* args, TRAPS);
duke@435	180
duke@435	181	static void call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, symbolHandle name, symbolHandle signature, TRAPS); // No args
duke@435	182	static void call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, symbolHandle name, symbolHandle signature, Handle arg1, TRAPS);
duke@435	183	static void call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, symbolHandle name, symbolHandle signature, Handle arg1, Handle arg2, TRAPS);
duke@435	184
duke@435	185	// Static call
duke@435	186	// -----------
duke@435	187	static void call_static(JavaValue* result, KlassHandle klass, symbolHandle name, symbolHandle signature, JavaCallArguments* args, TRAPS);
duke@435	188
duke@435	189	static void call_static(JavaValue* result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS);
duke@435	190	static void call_static(JavaValue* result, KlassHandle klass, symbolHandle name, symbolHandle signature, Handle arg1, TRAPS);
duke@435	191	static void call_static(JavaValue* result, KlassHandle klass, symbolHandle name, symbolHandle signature, Handle arg1, Handle arg2, TRAPS);
duke@435	192
duke@435	193	// Low-level interface
duke@435	194	static void call(JavaValue* result, methodHandle method, JavaCallArguments* args, TRAPS);
duke@435	195	};