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src/share/vm/prims/jvmtiClassFileReconstituter.hpp@710a3c8b516e (annotated)

src/share/vm/prims/jvmtiClassFileReconstituter.hpp

Tue, 08 Aug 2017 15:57:29 +0800

author

aoqi

date

Tue, 08 Aug 2017 15:57:29 +0800

changeset 6876

710a3c8b516e

parent 6198

55fb97c4c58d

parent 0

f90c822e73f8

child 7994

04ff2f6cd0eb

permissions

-rw-r--r--

merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2005, 2013, 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_PRIMS_JVMTICLASSFILERECONSTITUTER_HPP
aoqi@0	26	#define SHARE_VM_PRIMS_JVMTICLASSFILERECONSTITUTER_HPP
aoqi@0	27
aoqi@0	28	#include "jvmtifiles/jvmtiEnv.hpp"
aoqi@0	29
aoqi@0	30
aoqi@0	31	class JvmtiConstantPoolReconstituter : public StackObj {
aoqi@0	32	private:
aoqi@0	33	int _cpool_size;
aoqi@0	34	SymbolHashMap* _symmap;
aoqi@0	35	SymbolHashMap* _classmap;
aoqi@0	36	constantPoolHandle _cpool;
aoqi@0	37	instanceKlassHandle _ikh;
aoqi@0	38	jvmtiError _err;
aoqi@0	39
aoqi@0	40	protected:
aoqi@0	41	instanceKlassHandle ikh() { return _ikh; };
aoqi@0	42	constantPoolHandle cpool() { return _cpool; };
aoqi@0	43
aoqi@0	44	u2 symbol_to_cpool_index(Symbol* sym) {
aoqi@0	45	return _symmap->symbol_to_value(sym);
aoqi@0	46	}
aoqi@0	47
aoqi@0	48	u2 class_symbol_to_cpool_index(Symbol* sym) {
aoqi@0	49	return _classmap->symbol_to_value(sym);
aoqi@0	50	}
aoqi@0	51
aoqi@0	52	public:
aoqi@0	53	// Calls to this constructor must be proceeded by a ResourceMark
aoqi@0	54	// and a HandleMark
aoqi@0	55	JvmtiConstantPoolReconstituter(instanceKlassHandle ikh){
aoqi@0	56	set_error(JVMTI_ERROR_NONE);
aoqi@0	57	_ikh = ikh;
aoqi@0	58	_cpool = constantPoolHandle(Thread::current(), ikh->constants());
aoqi@0	59	_symmap = new SymbolHashMap();
aoqi@0	60	_classmap = new SymbolHashMap();
aoqi@0	61	_cpool_size = _cpool->hash_entries_to(_symmap, _classmap);
aoqi@0	62	if (_cpool_size == 0) {
aoqi@0	63	set_error(JVMTI_ERROR_OUT_OF_MEMORY);
aoqi@0	64	} else if (_cpool_size < 0) {
aoqi@0	65	set_error(JVMTI_ERROR_INTERNAL);
aoqi@0	66	}
aoqi@0	67	}
aoqi@0	68
aoqi@0	69	~JvmtiConstantPoolReconstituter() {
aoqi@0	70	if (_symmap != NULL) {
aoqi@0	71	os::free(_symmap, mtClass);
aoqi@0	72	_symmap = NULL;
aoqi@0	73	}
aoqi@0	74	if (_classmap != NULL) {
aoqi@0	75	os::free(_classmap, mtClass);
aoqi@0	76	_classmap = NULL;
aoqi@0	77	}
aoqi@0	78	}
aoqi@0	79
aoqi@0	80
aoqi@0	81	void set_error(jvmtiError err) { _err = err; }
aoqi@0	82	jvmtiError get_error() { return _err; }
aoqi@0	83
aoqi@0	84	int cpool_size() { return _cpool_size; }
aoqi@0	85
aoqi@0	86	void copy_cpool_bytes(unsigned char *cpool_bytes) {
aoqi@0	87	if (cpool_bytes == NULL) {
aoqi@0	88	assert(cpool_bytes != NULL, "cpool_bytes pointer must not be NULL");
aoqi@0	89	return;
aoqi@0	90	}
aoqi@0	91	cpool()->copy_cpool_bytes(cpool_size(), _symmap, cpool_bytes);
aoqi@0	92	}
aoqi@0	93	};
aoqi@0	94
aoqi@0	95
aoqi@0	96	class JvmtiClassFileReconstituter : public JvmtiConstantPoolReconstituter {
aoqi@0	97	private:
aoqi@0	98	size_t _buffer_size;
aoqi@0	99	u1* _buffer;
aoqi@0	100	u1* _buffer_ptr;
aoqi@0	101	Thread* _thread;
aoqi@0	102
aoqi@0	103	enum {
aoqi@0	104	// initial size should be power of two
aoqi@0	105	initial_buffer_size = 1024
aoqi@0	106	};
aoqi@0	107
aoqi@0	108	inline Thread* thread() { return _thread; }
aoqi@0	109
aoqi@0	110	void write_class_file_format();
aoqi@0	111	void write_field_infos();
aoqi@0	112	void write_method_infos();
aoqi@0	113	void write_method_info(methodHandle method);
aoqi@0	114	void write_code_attribute(methodHandle method);
aoqi@0	115	void write_exceptions_attribute(ConstMethod* const_method);
aoqi@0	116	void write_synthetic_attribute();
aoqi@0	117	void write_class_attributes();
aoqi@0	118	void write_source_file_attribute();
aoqi@0	119	void write_source_debug_extension_attribute();
aoqi@0	120	u2 line_number_table_entries(methodHandle method);
aoqi@0	121	void write_line_number_table_attribute(methodHandle method, u2 num_entries);
aoqi@0	122	void write_local_variable_table_attribute(methodHandle method, u2 num_entries);
aoqi@0	123	void write_local_variable_type_table_attribute(methodHandle method, u2 num_entries);
aoqi@0	124	void write_stackmap_table_attribute(methodHandle method, int stackmap_table_len);
aoqi@0	125	u2 inner_classes_attribute_length();
aoqi@0	126	void write_inner_classes_attribute(int length);
aoqi@0	127	void write_signature_attribute(u2 generic_signaure_index);
aoqi@0	128	void write_attribute_name_index(const char* name);
aoqi@0	129	void write_annotations_attribute(const char* attr_name, AnnotationArray* annos);
aoqi@0	130	void write_bootstrapmethod_attribute();
aoqi@0	131
aoqi@0	132	address writeable_address(size_t size);
aoqi@0	133	void write_u1(u1 x);
aoqi@0	134	void write_u2(u2 x);
aoqi@0	135	void write_u4(u4 x);
aoqi@0	136	void write_u8(u8 x);
aoqi@0	137
aoqi@0	138	public:
aoqi@0	139	// Calls to this constructor must be proceeded by a ResourceMark
aoqi@0	140	// and a HandleMark
aoqi@0	141	JvmtiClassFileReconstituter(instanceKlassHandle ikh) :
aoqi@0	142	JvmtiConstantPoolReconstituter(ikh) {
aoqi@0	143	_buffer_size = initial_buffer_size;
aoqi@0	144	_buffer = _buffer_ptr = NEW_RESOURCE_ARRAY(u1, _buffer_size);
aoqi@0	145	_thread = Thread::current();
aoqi@0	146	write_class_file_format();
aoqi@0	147	};
aoqi@0	148
aoqi@0	149	size_t class_file_size() { return _buffer_ptr - _buffer; }
aoqi@0	150
aoqi@0	151	u1* class_file_bytes() { return _buffer; }
aoqi@0	152
aoqi@0	153	static void copy_bytecodes(methodHandle method, unsigned char* bytecodes);
aoqi@0	154	};
aoqi@0	155
aoqi@0	156	#endif // SHARE_VM_PRIMS_JVMTICLASSFILERECONSTITUTER_HPP