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8010862: The Method counter fields used for profiling can be allocated lazily

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Allocate the method's profiling related metadata until they are needed.

Reviewed-by: coleenp, roland
This commit is contained in:
Jiangli Zhou 2013-04-09 17:17:41 -04:00
parent 0afa77628c
commit 56370657b9
34 changed files with 773 additions and 295 deletions
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18
hotspot/src/share/vm/opto/parseHelper.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -337,19 +337,21 @@ void Parse::increment_and_test_invocation_counter(int limit) {
if (!count_invocations()) return;
// Get the Method* node.
const TypePtr* adr_type = TypeMetadataPtr::make(method());
Node *method_node = makecon(adr_type);
ciMethod* m = method();
address counters_adr = m->ensure_method_counters();
// Load the interpreter_invocation_counter from the Method*.
int offset = Method::interpreter_invocation_counter_offset_in_bytes();
Node* adr_node = basic_plus_adr(method_node, method_node, offset);
Node* cnt = make_load(NULL, adr_node, TypeInt::INT, T_INT, adr_type);
Node* ctrl = control();
const TypePtr* adr_type = TypeRawPtr::make(counters_adr);
Node *counters_node = makecon(adr_type);
Node* adr_iic_node = basic_plus_adr(counters_node, counters_node,
MethodCounters::interpreter_invocation_counter_offset_in_bytes());
Node* cnt = make_load(ctrl, adr_iic_node, TypeInt::INT, T_INT, adr_type);
test_counter_against_threshold(cnt, limit);
// Add one to the counter and store
Node* incr = _gvn.transform(new (C) AddINode(cnt, _gvn.intcon(1)));
store_to_memory( NULL, adr_node, incr, T_INT, adr_type );
store_to_memory( ctrl, adr_iic_node, incr, T_INT, adr_type );
}
//----------------------------method_data_addressing---------------------------