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comparison src/cpu/x86/vm/interp_masm_x86_32.cpp @ 10105:aeaca88565e6

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8010862: The Method counter fields used for profiling can be allocated lazily. Summary: Allocate the method's profiling related metadata until they are needed. Reviewed-by: coleenp, roland
author jiangli
date Tue, 09 Apr 2013 17:17:41 -0400
parents f34d701e952e
children d13d7aba8c12
comparison
equal deleted inserted replaced
9055:dcdeb150988c 10105:aeaca88565e6
1 /* 1 /*
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
264 // skip past the header 264 // skip past the header
265 addptr(cache, in_bytes(ConstantPoolCache::base_offset())); 265 addptr(cache, in_bytes(ConstantPoolCache::base_offset()));
266 addptr(cache, tmp); // construct pointer to cache entry 266 addptr(cache, tmp); // construct pointer to cache entry
267 } 267 }
268 268
269 void InterpreterMacroAssembler::get_method_counters(Register method,
270 Register mcs, Label& skip) {
271 Label has_counters;
272 movptr(mcs, Address(method, Method::method_counters_offset()));
273 testptr(mcs, mcs);
274 jcc(Assembler::notZero, has_counters);
275 call_VM(noreg, CAST_FROM_FN_PTR(address,
276 InterpreterRuntime::build_method_counters), method);
277 movptr(mcs, Address(method,Method::method_counters_offset()));
278 testptr(mcs, mcs);
279 jcc(Assembler::zero, skip); // No MethodCounters allocated, OutOfMemory
280 bind(has_counters);
281 }
282
269 // Load object from cpool->resolved_references(index) 283 // Load object from cpool->resolved_references(index)
270 void InterpreterMacroAssembler::load_resolved_reference_at_index( 284 void InterpreterMacroAssembler::load_resolved_reference_at_index(
271 Register result, Register index) { 285 Register result, Register index) {
272 assert_different_registers(result, index); 286 assert_different_registers(result, index);
273 // convert from field index to resolved_references() index and from 287 // convert from field index to resolved_references() index and from