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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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12
hotspot/src/share/vm/interpreter/invocationCounter.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 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
@ -104,15 +104,19 @@ const char* InvocationCounter::state_as_short_string(State state) {
static address do_nothing(methodHandle method, TRAPS) {
// dummy action for inactive invocation counters
method->invocation_counter()->set_carry();
method->invocation_counter()->set_state(InvocationCounter::wait_for_nothing);
MethodCounters* mcs = method->method_counters();
assert(mcs != NULL, "");
mcs->invocation_counter()->set_carry();
mcs->invocation_counter()->set_state(InvocationCounter::wait_for_nothing);
return NULL;
}
static address do_decay(methodHandle method, TRAPS) {
// decay invocation counters so compilation gets delayed
method->invocation_counter()->decay();
MethodCounters* mcs = method->method_counters();
assert(mcs != NULL, "");
mcs->invocation_counter()->decay();
return NULL;
}