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8195103: Refactor out card table from CardTableModRefBS to flatten the BarrierSet hierarchy

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Reviewed-by: kbarrett, tschatzl
This commit is contained in:
Erik Österlund 2018-01-10 22:48:27 +01:00
parent ceb48aba9b
commit 0fb7dffb83
32 changed files with 282 additions and 372 deletions
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15
src/hotspot/share/runtime/sharedRuntime.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2018, 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
@ -3169,3 +3169,16 @@ frame SharedRuntime::look_for_reserved_stack_annotated_method(JavaThread* thread
}
return activation;
}
void SharedRuntime::on_slowpath_allocation_exit(JavaThread* thread) {
// After any safepoint, just before going back to compiled code,
// we inform the GC that we will be doing initializing writes to
// this object in the future without emitting card-marks, so
// GC may take any compensating steps.
oop new_obj = thread->vm_result();
if (new_obj == NULL) return;
BarrierSet *bs = Universe::heap()->barrier_set();
bs->on_slowpath_allocation_exit(thread, new_obj);
}