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comparison src/share/vm/oops/constMethod.hpp @ 7402:fd74228fd5ca

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8004076: Move _max_locals and _size_of_parameters to ConstMethod for better sharing. Summary: Move _max_locals and _size_of_parameters to ConstMethod for better sharing. Reviewed-by: coleenp, minqi, jrose
author jiangli
date Tue, 11 Dec 2012 12:41:31 -0500
parents b2dbd323c668
children ade95d680b42
comparison
equal deleted inserted replaced
7396:4a2ed49abd51 7402:fd74228fd5ca
44 // | stackmap_data (oop) | 44 // | stackmap_data (oop) |
45 // | constMethod_size | 45 // | constMethod_size |
46 // | interp_kind | flags | code_size | 46 // | interp_kind | flags | code_size |
47 // | name index | signature index | 47 // | name index | signature index |
48 // | method_idnum | max_stack | 48 // | method_idnum | max_stack |
49 // | max_locals | size_of_parameters |
49 // |------------------------------------------------------| 50 // |------------------------------------------------------|
50 // | | 51 // | |
51 // | byte codes | 52 // | byte codes |
52 // | | 53 // | |
53 // |------------------------------------------------------| 54 // |------------------------------------------------------|
148 u2 _signature_index; // Method signature (index in constant pool) 149 u2 _signature_index; // Method signature (index in constant pool)
149 u2 _method_idnum; // unique identification number for the method within the class 150 u2 _method_idnum; // unique identification number for the method within the class
150 // initially corresponds to the index into the methods array. 151 // initially corresponds to the index into the methods array.
151 // but this may change with redefinition 152 // but this may change with redefinition
152 u2 _max_stack; // Maximum number of entries on the expression stack 153 u2 _max_stack; // Maximum number of entries on the expression stack
153 154 u2 _max_locals; // Number of local variables used by this method
155 u2 _size_of_parameters; // size of the parameter block (receiver + arguments) in words
154 156
155 // Constructor 157 // Constructor
156 ConstMethod(int byte_code_size, 158 ConstMethod(int byte_code_size,
157 int compressed_line_number_size, 159 int compressed_line_number_size,
158 int localvariable_table_length, 160 int localvariable_table_length,
336 static ByteSize constants_offset() 338 static ByteSize constants_offset()
337 { return byte_offset_of(ConstMethod, _constants); } 339 { return byte_offset_of(ConstMethod, _constants); }
338 340
339 static ByteSize max_stack_offset() 341 static ByteSize max_stack_offset()
340 { return byte_offset_of(ConstMethod, _max_stack); } 342 { return byte_offset_of(ConstMethod, _max_stack); }
343 static ByteSize size_of_locals_offset()
344 { return byte_offset_of(ConstMethod, _max_locals); }
345 static ByteSize size_of_parameters_offset()
346 { return byte_offset_of(ConstMethod, _size_of_parameters); }
347
341 348
342 // Unique id for the method 349 // Unique id for the method
343 static const u2 MAX_IDNUM; 350 static const u2 MAX_IDNUM;
344 static const u2 UNSET_IDNUM; 351 static const u2 UNSET_IDNUM;
345 u2 method_idnum() const { return _method_idnum; } 352 u2 method_idnum() const { return _method_idnum; }
347 354
348 // max stack 355 // max stack
349 int max_stack() const { return _max_stack; } 356 int max_stack() const { return _max_stack; }
350 void set_max_stack(int size) { _max_stack = size; } 357 void set_max_stack(int size) { _max_stack = size; }
351 358
359 // max locals
360 int max_locals() const { return _max_locals; }
361 void set_max_locals(int size) { _max_locals = size; }
362
363 // size of parameters
364 int size_of_parameters() const { return _size_of_parameters; }
365 void set_size_of_parameters(int size) { _size_of_parameters = size; }
366
352 // Deallocation for RedefineClasses 367 // Deallocation for RedefineClasses
353 void deallocate_contents(ClassLoaderData* loader_data); 368 void deallocate_contents(ClassLoaderData* loader_data);
354 bool is_klass() const { return false; } 369 bool is_klass() const { return false; }
355 DEBUG_ONLY(bool on_stack() { return false; }) 370 DEBUG_ONLY(bool on_stack() { return false; })
356 371