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1 /* |
1 /* |
2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. |
2 * Copyright (c) 2018, 2019, 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. |
296 * the object is newly allocated and that no safepoint exists between the |
296 * the object is newly allocated and that no safepoint exists between the |
297 * allocation and the store. |
297 * allocation and the store. |
298 * |
298 * |
299 * In the case of slow allocation the allocation code must handle the barrier |
299 * In the case of slow allocation the allocation code must handle the barrier |
300 * as part of the allocation in the case the allocated object is not located |
300 * as part of the allocation in the case the allocated object is not located |
301 * in the nursery, this would happen for humongous objects. This is similar to |
301 * in the nursery; this would happen for humongous objects. |
302 * how CMS is required to handle this case, see the comments for the method |
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303 * CollectedHeap::new_deferred_store_barrier and OptoRuntime::new_deferred_store_barrier. |
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304 * A deferred card mark is required for these objects and handled in the above |
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305 * mentioned methods. |
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306 * |
302 * |
307 * Returns true if the post barrier can be removed |
303 * Returns true if the post barrier can be removed |
308 */ |
304 */ |
309 bool G1BarrierSetC2::g1_can_remove_post_barrier(GraphKit* kit, |
305 bool G1BarrierSetC2::g1_can_remove_post_barrier(GraphKit* kit, |
310 PhaseTransform* phase, Node* store, |
306 PhaseTransform* phase, Node* store, |